Answer:
C. different types of cells have different chromosomes in them
Explanation:
the chromosome unique structure allows our genetic data to be disecretly kept inside our nuclei. this is important because we have an abundance of genetic data. If the DNA molecules in a single cell were unwound, they would stretch out to six feet long. the chromosomes unique structure has a few key parts.
There are different types of cells because gene expression is different between different specialized cells. Hence, option D is correct.
What is a cell?The cell is a structural and functional unit of life. Different cells perform different functions. There are two types of cells and that is prokaryotic and eukaryotic. Prokaryotic cells do not have defined nuclei and membrane-bound organelles, while eukaryotic cells have defined nuclei and membrane-bound organelles.
The cell contains various organelles for its functioning, such as mitochondria, nucleus, ribosomes, Golgi body, lysosomes, etc. Genetic material is present inside the nucleus.
Gene expression is different between different cells for performing different functions. Therefore, option D is correct.
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There is a freshwater lake in the United States that heavily relies on the fishing industry to support its economy. A local aquarium decided to import some Asian shrimp to sell as pets. Unfortunately, during delivery, some boxes full of shrimp fell off the delivery truck into the water.
The Asian shrimp is bigger than most native U.S. shrimp species. It also has a large appetite and feeds on other shrimp, fish eggs, mollusks, and aquatic plants. There are no predators that would eat Asian shrimp in this lake.
Based on the text passage above, answer the following questions.
After the accident, will native shrimp populations increase or decrease?
How will this affect other freshwater species in the lake, like fish and mollusks and the aquatic plant life?
Overall, will this new, foreign species increase or decrease the biodiversity and health of this ecosystem?
Your answer should include at least three complete sentences.
The answers include the following:
The native shrimp population will decrease. This will also bring about a reduction in the freshwater species in the lake, like fish and mollusks and the aquatic plant life.The new, foreign species will decrease the biodiversity and health of this ecosystem.What is Population?This is referred to as the total number of organisms which are present in an area over a given period of time.
In a situation whereby some asian shrimp fell into the water then it means an increase in competition. Since therefore leads to the reduction in the freshwater species in the lake, like fish and mollusks and the aquatic plant life because it serves as their predator and it has none which is therefore the reason why it was chosen as the correct choice.
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See image below about Punnet Square completion.
hemosiderosis is a condition in which excess is stored as hemosiderin in cells of many organs and tissues.
Hemosiderosis is the condition when the iron level in organs or tissues is overloaded. This iron is stored by hemosiderin protein.
What is hemosiderosis?Around 70% of iron will be found in red blood cells. The iron in red blood cells performs to carry oxygen. As the red blood cells die, they release iron which becomes hemosiderin. Hemosiderin is a protein that stores iron in body tissues. If the hemosiderin is overloaded, it will cause hemosiderosis.
Deposition of iron results in functional damage to many organs such as the heart, liver, spleen, endocrine gland, and others. The lungs and kidneys are often sites of hemosiderosis.
Hemosiderosis often doesn’t cause symptoms but over time the symptoms that could appear are coughing, fatigue, difficulty breathing, etc.
Thus, excessive accumulation of hemosiderin in organs and tissues causes hemosiderosis.
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What is the scientific method? Answer in 2-4 sentences, including the words below:
Observation
Hypothesis
Data
Conclusion
Answer: The scientific method is a series of processes that people can use to gather knowledge about the world around them, improve that knowledge, and attempt to explain why and/or how things occur. This method involves making observations, forming questions, making hypotheses, doing an experiment, analyzing the data, and forming a conclusion.
Explanation:
2. What must happen in DNA for transcription to begin?
A The bonds between the base pairs must break.
B. The bonds between the base pairs must duplicate.
C. The bonds between the bases and the sugar phosphate backbones must break. Vc
D. The bonds between the bases and the sugar phosphate backbones must duplicate.
The bonds between the base pairs must break, to expose DNA for transcription to begin, hence option A is correct.
What is transcription?A little section of the DNA double helix is first opened and unraveled during transcription in order to reveal the nucleotides on each DNA strand.
RNA polymerase connects to a promoter region close to the start of a gene to start transcription (directly or through helper proteins).
A new, complementary RNA molecule is created by RNA polymerase using a template from one of the DNA strands (the template strand).
Therefore, to expose DNA for transcription to begin, hence option A is correct.
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D
Question 7
15. Identify one of the major muscles moving the hands into the position shown.
16. Identify the major muscle moving the right thigh into the position shown.
17. Identify the major muscle moving the right leg into the position shown.
A proton gradient is formed in the mitochondria such that the concentration of protons (h ) is higher on one side of the inner mitochondrial membrane than on the other side. what is the purpose of this proton gradient?
The purpose of this proton gradient is that it Generates ATP in the electron transport chain.
What is meant by a proton gradient?In a mitochondrial membrane, a proton gradient is created when the proton concentration is greater outside the inner membrane than inside the membrane. It develops as a result of the respiration's electron transport chain.
Proton gradients drive ATP synthesis via the enzyme ATP synthase. ADP + Pi are combined to generate an ATP molecule as protons pass via the enzyme ATP synthase.
What creates a proton gradient?A proton gradient is produced when two quinol (4H+4e) oxidations at the Qo site lead to the production of one quinol (2H+2e) at the Qi site (in total six protons are translocated: two protons reduce quinone to a quinol and four protons are released from two ubiquinol molecules).
Where does proton gradient occur?An electron transport chain transfers a high-energy electron to the inner mitochondrial membrane. The energy released pumps out hydrogen of the matrix space. As a result, a gradient is created, which uses ATP synthase to drive hydrogen back through the membrane.
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PLS HELP ASAP RIGHT NOW
Answer: A pigment called melanin that is produced in the birds cell
Explanation:
color blindness is an example of x-linked inheritance. hemophilia is another example of x-linked inheritance, also from a recessive allele (h). the dominant allele (h) determines whether the person possesses normal blood clotting. a person with hemophilia has a permanent tendency for hemorrhaging due to a deficiency of one of the clotting factors (viii-antihemophilic factor). determine the offspring from a cross of a mother who is a carrier (heterozygous) for the disease and a father with normal blood coagulation. (some labels may not be used.)
The mother's genotype is X¹X while the father's genotype is XY.
The offspring will be XX¹ XX X¹Y XY there will be only one man affected by hemophilia.
What is hemophilia?Blood clots incorrectly in people with haemophilia, an inherited bleeding disorder. Spontaneous bleeding and bleeding after injury or surgery could come from this. Numerous clotting proteins found in blood can help stop bleeding. Low amounts of either factor VIII (8) or factor IX are seen in hemophiliacs (9). The quantity of factor in a person's blood determines the severity of their hemophilia. The likelihood of bleeding, which can cause major health issues, increases as the amount of the component decreases.
Hemophilia can occasionally strike a person later in life. Middle-aged or elderly adults, young women who have recently given birth or are in the final stages of pregnancy, or people who are older are involved in the majority of cases. The right medical care frequently helps this illness get better.
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how is gender equality related to population growth?
Answer:
The areas with the fastest population growth also have some of the worst gender equality scores.
Explanation:
When women are free to choose what happens to their bodies and lives, average family size plummets, as is evident in all countries with below-replacement fertility rates.
match the muscle fiber component with its description.1. sarcolemma (click to select)2. endomysium (click to select)3. sarcoplasm (click to select)4. myofibril (click to select)
1. Sarcolemma- Plasma membrane
2. Endomysium- Connective tissue
3. Sarcoplasm- Cytoplasm of a muscle cell
4. Myofibril- Bundle of protein filaments
what is muscle fiber?
One muscle cell makes up each fibre of muscle. They assist in regulating the bodily forces physically.
The basement membrane and endomysial connective tissue encircle the sarcolemma, which is the plasma membrane of the muscle cell. The sarcolemma is an excitable membrane that resembles the membrane of neuronal cells in many ways.
The endomysium, a thin network of connective tissue that surrounds individual muscle fibres and houses the blood vessels and nerves that supply them as well as the proteoglycan matrix for ion flow and metabolic exchange, is made up of connective tissue.
A muscle fiber's cytoplasm is called sarcoplasm. It is a water solution that includes ATP, phosphagens, enzymes, intermediate molecules, and product molecules involved in a variety of metabolic processes.
Long contractile fibres known as myofibrils are arranged in clusters that are parallel to one another along the long axis of myocytes (long single multinucleated cells that combine to form the muscle). On the cell's long axis, the myocytes are arranged parallel to one another.
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disruption of the dorsal column-mediated lemniscal system prevents the transmission of temperature information.
Disruption of the dorsal column-mediated lemniscal prevents the transmission of visceral pain information.
What is dorsal and ventral?An organism's rear or upper side is referred to as its dorsal surface (from the Latin dorsum, meaning "back"). The dorsal side of the skull is the top when referring to it. The front or bottom side of an organism is referred to as having a ventral surface (from the Latin venter, meaning "belly").
Where on the body is the dorsal?The head and the rear of the trunk are both located in the dorsal cavity, which is located in the posterior, the back, of the body. The brain and spinal cavities are separated by the dorsal cavity. The majority of the upper section of the skull is taken up by the cranial cavity, which houses the brain.
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The complete question is -
Disruption of the _______ system prevents the transmission of _______ information.
In colorectal cancer, several genes must be mutated in order to make a cell a cancer cell. Which of the following kinds of genes would you expect to be mutated?a. genes involved in control of the cell cycleb. genes coding for enzymes that act in the colonc. the genes of the bacteria that are abundant in the colond. genes that are especially susceptible to mutation
In the entire world, colorectal cancer (CRC) is the second most frequent disease in women and the third most common cancer in males.
What genes do colorectal cancers have mutations in?
One of the most prevalent inherited cancer syndromes is colon cancer. The chromosomes 2 and 3 have the genes MLH1 and MSH2, which have both been linked to colorectal cancer.
Typically, the proteins produced by these genes aid in the correction of errors in DNA replication.
What three categories of genes are associated with cancer?
Breast, ovarian, colon, prostate, and pancreatic cancers may all be at increased risk due to the genes ATM, PALB2, and CHEK2.
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monoclonal antibodies and can be used to treat certain types of cancers in a process known as immunotherapy. polyclonal antibodies cytokines leukocytes macrophages
Solitary antibodies Immunotherapy, which employs cytokines, can be utilized to treat specific tumors.
What does immunotherapy actually do?Your immune system is assisted in fighting cancer via immunotherapy, a sort of cancer treatment. Your body's immune system aids in the defense against infections and other disorders. White blood cells, organs, and lymphatic system components make up its composition. Biological therapy includes immunotherapy.
Is immunotherapy superior to chemotherapy?Both chemotherapy and immunotherapy have the ability to be successful cancer therapies. One isn't always superior to the other. The one that effectively treats your illness depends on a number of variables, including the location of the tumour and the distance it has spread.
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As a fish moves from salt water to fresh water, its cells:
A. become stem cells.
B. begin endocytosis.
C. gain water.
D. fill with salt.
18. Different global temperature zones are based on
lines of latitude on the Earth.
A True
B False
yeast infections are caused by group of answer choices saccharomyces cerevisiae. penicillium. aspergillus. histoplasma. candida albicans.\
Yeast infections are caused by E. Candida Albicans.
What is a yeast infection?Vaginal yeast infection or candidiasis is a disease caused by a fungus or yeast. A healthy vagina contains bacteria and some yeast cells. However, when the balance of bacteria and yeast changes, the yeast cells can multiply, causing itching, swelling, and irritation.
The cause of this infection is candida Albicans fungus. The vagina naturally has a balanced level of yeast, including candida, and bacteria. Certain bacteria (lactobacillus) act to prevent the overgrowth of the yeast.
However, that balance can be disturbed. Overgrowth of candida or penetration of yeast into the deeper cell layers of the vagina can cause symptoms of a yeast infection.
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Urea diffused in all regions of the filter during countercurrent flow.
Using what you know about the sizes of urea and potassium, which graph shows what would happen to potassium
during countercurrent flow?
Diffuse
Consider a scenario in which urea is diffusing from an area of higher concentration to a region of lower concentration while the blood and dialysate are moving in the same direction.
Diffusion therefore occurs throughout the entire filter. The dialysate's urea concentration is shown by the blue line, while the blood's urea concentration is shown by the red line.
What is diffusion?
A substance diffuses when it moves from a region of high concentration to one of lower concentration. When particles in liquids and gases randomly collide and disperse, diffusion takes place. For living things, diffusion is a crucial mechanism because it governs how molecules enter and exit cells.
What distinguishes osmosis from diffusion?
Diffusion permits both solvent and solute molecules to move freely, whereas osmosis only permits solvent molecules to do so.
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Consider a scenario in which urea is diffusing from an area of higher concentration to a region of lower concentration while the blood and dialysate are moving in the same direction.
Diffusion therefore occurs throughout the entire filter. The dialysate's urea concentration is shown by the blue line, while the blood's urea concentration is shown by the red line.
What is diffusion?A substance diffuses when it moves from a region of high concentration to one of lower concentration. When particles in liquids and gases randomly collide and disperse, diffusion takes place. For living things, diffusion is a crucial mechanism because it governs how molecules enter and exit cells.
What distinguishes osmosis from diffusion?Diffusion permits both solvent and solute molecules to move freely, whereas osmosis only permits solvent molecules to do so.
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Plants are often compared to fungi, but they are not as closely related. Using your
understanding of phylogenetic relationships, explain why fungi and plants are not as
closely related as people think. Discuss the similarities and differences between
fungi and plants. Make sure to include discussions of their metabolism, reproduction,
structure and other important characteristics.
A certain parasite is introduced to both areas. This parasite generally infects only one species of tree while the others remain unharmed. Which area would be more likely to survive if this parasite were to be introduced to the population? Why?
The area that more likely would survive if a parasite were introduced to the population after it was introduced to two areas and generally infects only one species of the tree while the other remains unharmed is the area having the tree host because this ecosystem is prepared to face the ecosystem disturbance.
What is the process of ecosystem disturbance?The process of ecosystem disturbance is defined as any external factor such as in this case the introduction of an invasive parasite that is able to infect native hosts which may alter the homeostasis state or internal equilibrium of such ecosystems.
Therefore, with this data, we can see that the process of ecosystem disturbance is a definition that can be used to understand how the presence of invasive species may lead to irreversible changes in a given ecosystem while others may remain unaltered.
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Muscle contractions occur when myofibrils
in the muscle shorten and lengthen to make
the muscle contract and extend. Which
types of muscles use these muscle
contractions?
All muscle types
Only smooth muscles.
Which type of cell transport is used by mitochondria to generate energy by
allowing hydrogen (H*) ions to flow through a membrane protein?
A.Exocytosis
B.Facilitated diffusion
C.Endocytosis
D.Active transport
the goal of antimicrobial treatment is to kill or inhibit the growth of microbes without damaging the host. this is referred to as selective toxicity. to achieve selective toxicity, antimicrobial drugs generally target bacterial cell structures, enzymes, or processes that are unique to the microbe and not found in host cells. in seeking targets that are unique to the microbes, developers of antimicrobial drugs must consider the differences between prokaryotic and eukaryotic cells. those structures that are exclusive to or distinctly different in prokaryotic cells are likely targets for antibacterial drugs.
The aim of antimicrobial treatment is to kill or inhibit the infecting organism without damaging the host; this is known as selective toxicity.
What is antimicrobial treatment ?
Antimicrobial treatment is the use of antimicrobial drugs to treat bacterial, fungal, or viral infections. Antimicrobial drugs are used to kill or stop the growth of microorganisms, including bacteria, fungi, and viruses. These drugs work by either killing the microorganisms directly or by inhibiting their growth.
What is selective toxicity?
Selective toxicity is the ability of a chemical or biological agent to target a specific organism or cell type while leaving other organisms or cells unharmed. It is an important concept in the development of drugs, pesticides, and other treatments. Selective toxicity is desirable because it means that the agent can be used without causing harm to other organisms in the environment.
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The light dependent reactions supply the Calvin cycle with co2 and ATP
true or false?
Sunlight energy is utilized by the light-dependent processes to create ATP, NADPH, and oxygen. Chloroplast thylakoid membranes contain light-dependent processes (ATP and ADPH the cell can actually use in Calvin Cycle).
What light dependent reactions in Calvin cycle?The light reactions supply the Calvin cycle with ATP and NADPH, and it returns to them with ADP, Pi, and NADP+.
The Calvin cycle's carbon fixation stage is supplied with ATP and NADPH by the light reactions, while the light reactions are supplied with water and electrons by the Calvin cycle.
Therefore, it is true that The light dependent reactions supply the Calvin cycle with Co2 and ATP.
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A pond contains many different types of organisms. The table below lists some of these organisms and their methods of reproduction.
Organism Method of Reproduction
Pantala flavescens sperm and egg fusion
Spirodela polyrhiza budding
Naegleria fowleri binary fission
Hydra oligactis budding
Over time, the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. Which of the organisms would most likely survive the change to their environment?
A.
Naegleria fowleri, because these organisms would have a high level of genetic variation due to asexual reproduction
B.
Hydra oligactis, because these organisms would have a low level of genetic variation due to sexual reproduction
C.
Pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction
D.
Spirodela polyrhiza, because these organisms would have a low level of genetic variation due to asexual reproduction
Answer:
C.
Explanation:
"Pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction"
Because they reproduce sexually they will vary genetically, and asexual reproduction is less likely to do this-- on top of this asexual reproduction is more likely to have negative effects than the latter.
Quote about asexual vs sexual reproduction:
"A disadvantage is that sexual reproduction takes longer than asexual reproduction. A mate must be found, the egg must be fertilized by sperm, and then the offspring develop. The benefit of introducing genetic variation into the species, however, outweighs this disadvantage."
Or to put it simply the more genetic variation the higher advantage to survive.
C- Pantala flavescens is your answer.
1. What is a nonrenewable resource?
A. a resource that is used for energy
B. a resource that is in limited supply
C. a resource that harms the environment when it is used
D. a resource that can replace itself quickly
2. Are all rocks made up of one mineral?
A. No. Some rocks may contain several minerals.
B. Yes. If it contains more minerals, then it is an ore
C. No. If it contains more minerals, however, then it is not useful to people.
D. Yes. If it contains more minerals, then it would lose its orderly internal structure.
3. Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral?
A. No, coal is not a mineral because coal is made of dead plants.
B. No, coal is not a mineral because coal can be burned to produce electricity and heat.
C. Yes, coal is a mineral because all rocks that are useful to people are minerals.
D. Yes, coal is a mineral because all rocks are nonliving solid minerals.
4. Which is a positive aspect of fossil fuels?
A. They do not need processing to produce energy.
B. They provide energy for cars, trains, and heat.
C. They are ecologically friendly.
D. They can be recycled and reused.
5. Which is a negative aspect of fossil fuels?
A. They are difficult to transport.
B. They cause pollution on Earth.
C. They take a long time to produce energy.
D. They are difficult to find.
6. Which is a disadvantage of solar power?
A. It requires turbines.
B. It can be harmful to wildlife.
C. It requires burning fuel, which causes air pollution.
D. It can only be used where there is lots of sunlight.
7. Which is a thick, sticky, tar-like deposit of bitumen mixed into sandy sediment?
A. coal
B. sandstone
C. oil sand
D. shale
8. Which statement best explains an environmental outcome of using fossil fuels for energy?
A. Fossil fuels release carbon dioxide which plants use to make food.
B. When fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming.
C. When fossil fuels are burned, hazardous ash is created and carried through the environment by wind and dropped into nearby lakes and ponds.
D. Fossils fuels produce waste that exposes humans to dangerous levels of radiation.
9. Why is soil considered a vital resource?
A. It plays a variety of roles for plants and animals.
B. It is the place where all nutrients on Earth are stored.
C. It provides the source of material for different landforms.
D. It is hard to destroy and easy to make.
10. Which describes a renewable energy resource?
A. It is more prone to serious accidents.
B. It produces less pollutants than fossil fuels.
C. It consists of carbon and hydrogen molecules.
D. It is less expensive than fossil fuels.
11. Use the scenario to answer the question: Edwin buys a water bottle, reuses it twice, and then recycles it. Eleanor buys a water bottle, reuses it twelve times, and then throws it away. Which energy cost would apply to Edwin, but not to Eleanor?
A. the cost of producing the original bottle
B. the cost of processing the bottle after it was no longer used
C. the cost of transporting the bottle to the store
D. the cost of transporting the bottle away from the house
12. Your class goes on a field trip to observe drilling machinery. The geologists at the drill site show you displays of drilled rocks to compare different types of drills and methods. The drilled holes in one rock display are significantly larger than the holes drilled in the display next to it. Given this information, which statement is correct?
A. The rock display with smaller holes shows copper drilling, which is deep underground.
B. The rock display with smaller holes shows petroleum drilling, which is closer to the surface.
C. The rock display with larger holes shows copper drilling, which is closer to the surface.
D. The rock display with larger holes shows petroleum drilling, which is deep underground.
A nonrenewable resource is a resource that can replace itself quickly. The correct option is D.
Some rocks contain several minerals. The correct option is A.
Coal is not a mineral because coal is made of dead plants. The correct option is A.
A positive aspect of fossil fuels is that fossil fuels provide energy for cars, trains, and heat. The correct option is B.
A negative aspect of fossil fuels is that they cause pollution on Earth. The correct option is B.
A disadvantage of solar power is that it can only be used where there is lots of sunlight. The correct option is D.
Shale is a thick, sticky, tar-like deposit of bitumen mixed into sandy sediment. The correct option is D.
A statement that best explains an environmental outcome of using fossil fuels for energy is that when fossil fuels are burned, they release toxic gases into the air that cause pollution and increase global warming. The correct option is B.
Soil is considered a vital resource because it provides a source of material for different landforms. The correct option is C.
A renewable energy resource produces less pollutants than fossil fuels. The correct option is B.
The cost of processing the bottle after it was no longer used would apply to Edwin, but not to Eleanor. The correct option is B.
The rock display with larger holes shows copper drilling, which is closer to the surface. The correct option is C.
What are renewable energy and non-renewable resources?Renewable energy sources are energy sources that can easily be replaced when they are used up. They included solar energy and wind energy.
Non-renewable energy resources are resources that are not easily replaced when they are used up. For example fossil fuels.
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Describe the changes that occur in the groundwater when the human population
increases.
Answer:
The changes that occur in the groundwater are
The groundwater becomes polluted
The groundwater which has many sewage garbages leads to the smelling of water and can cause many disease
The groundwater gradually evaporates because of ultra violet sun rays as because of increasing pollution the Ozone layer is getting thinner and thinner
a postmenopausal client wishes to increase the amount of vitamin d that she consumes to help keep her bones strong
A food which can support the client wishes is milk. Because milk has rich amount vitamin D which help to strengthen the bones.
Which drink is best for bones?Beverage that are best to help strengthen the bones, is beverages that include calcium and vitamin D-fortified juices, plain or chocolate milk, or flavored waters. The food that good for bones are tomato products, prunes, raisins, potatoes, spinach, sweet potatoes, papaya, oranges, orange juice, bananas and plantains. Red peppers, green peppers, oranges, grapefruits, broccoli, strawberries, brussels sprouts, papaya and pineapples.Calcium and vitamin D are the two nutrients that are most crucial for bone health and fracture healing. Both are abundant in milk, but there are also numerous other dietary sources.Learn more about bone strengthening here: brainly.com/question/12060694
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which substances are carried from the muscles
Answer:
oxygen and nutrients
Explanation:
Muscle cells are supplied by tiny capillaries that deliver oxygen and nutrients and remove waste products such as carbon dioxide and lactic acid.
Which of the following are examples of genetic drift?
(Choose all that apply)
A. Bottleneck effect
B. Founder Effect
C. Lamarck Effect
D. Equilibrium Effect
When a population is drastically reduced in number, genetic drift manifests itself most dramatically in a phenomenon known as the bottleneck effect, hence option A is correct.
What is genetic drift?Natural disasters (earthquakes, floods, and fires) can completely devastate a population, killing the majority of people and leaving just a few, haphazard survivors in their wake.
Genetic drift is a random process that can produce significant population changes quickly.
Therefore, regularly tiny population numbers and drastic population size decreases are known as "bottlenecks," hence option A is correct.
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