Answer:
there is a chance because, babies mostlyncome from the dad since the made the child through his nuts. so the child will go through hemophilia
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List three inferences that scientists make about the first living thing. Explain why
[Trolls and false answers will be blocked and reported]
Answer:
There are many inferences that scientists make about the first living thing, but three of the most important ones are:
The first living thing was capable of self-replication, or the ability to make copies of itself. This is inferred from the fact that all living things today are capable of self-replication, and it is likely that this ability was present in the first living thing as well.
The first living thing was able to obtain and use energy from its environment. This is inferred from the fact that all living things require energy to grow, develop, and reproduce, and it is likely that the first living thing had a similar need for energy.
The first living thing was able to evolve and adapt to changing conditions. This is inferred from the fact that all living things today are able to evolve and adapt to their environments, and it is likely that the first living thing was also capable of evolving and adapting over time.
These inferences are based on the observations and findings of scientists who study the origins of life. They are not certainties, but rather educated guesses based on the available evidence. By making these inferences, scientists can better understand the characteristics and behavior of the first living thing, and how it might have evolved into the complex and diverse forms of life that exist today.
Explanation:
These conclusions are based on the observations and findings of scientists studying the origins of life. They are educated guesses based on the available evidence, not certainties.
What is inferences?In these cases, scientists use inferential reasoning to answer their questions based on evidence gathered through observations and information discovered by them or other scientists about the topic.
The first cells were most likely prokaryotic. Heterotrophic and anaerobic. The first living thing had the ability to self-replicate, or make copies of itself.
This is deduced from the reality that all living things today are capable of self-replication, and it is likely that the first living thing also possessed this ability.
The first living thing had the ability to evolve and adapt to changing circumstances. This is implied by the fact that all living things today are capable of evolving and adapting to their surroundings.
Thus, these are the inferences that scientists make about the first living thing.
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can someone please help me
Answer:
Yo:) Not too sure abt the top but I believe the bottom is
1. Liver cell 2. tissue 3. heart muscle 4. digestive system 5. tiger
Bacteria and eukaryotes have many molecular differences due to life history differencesDescribe the molecular processes of transcription and the control and regulation of transcription for bacteria and eukaryotes. Explain which differences may be due to life history and why
Answer:
The main differences between bacterial and eukaryotic transcriptions are: In bacteria, transcription and translation are continous process, but in eukaryotes these are two sepearte process. Initiation of transcription is
simple in bacteria
Explanation: hush jus readd.
When a happened new substances are formed
Answer:
Chemical change
Explanation:
In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
A plant grown from a [round, yellow] seed is crossed with a plant grown from a [wrinkled, yellow] seed. This cross produces four progeny types in the F1:
[round, yellow], [wrinkled, yellow], [round, green], and [wrinkled, green].
Use this information to deduce the genotypes of the parent plants.
Here is what the question looks like if that helps: All it is asking for is the 2 parent genotypes but I'm not sure of the answer... if someone can explain and help me out I would appreciate it!
The question looks like if that helps
Yellow round = RrYy
Yellow wrinkled= rrYy
Phenotypes and Genotypes:
In a diploid organism, two alleles for a particular gene are expressed and interact to produce physical traits. A species' observable characteristics are referred to as its phenotype. The genotype is the genetic composition of an organism, which includes both the alleles that are physically expressed and those that are not. Mendel's hybridization studies show how phenotype and genotype differ from one another. For instance, the diploid genotypes of the plants in the P, F1, and F2 generations are related to the phenotypes that Mendel observed in his crosses between pea plants with different features. We shall utilise seed colour as an example, which was Mendel's second feature of study. Two alleles of a single gene control the colour of seeds.
The green-seed gene is recessive, whereas the yellow-seed allele is dominant. All of the F1 hybrid progeny had yellow seeds when true-breeding plants were crossed, when one parent had yellow seeds and the other had green seeds. In other words, the hybrid progeny shared the same phenotypes as the parent plant that was a true breeder and had yellow seeds. However, because it appeared in some of the F2 offspring, we know that the allele given by the parent who had green seeds was not simply lost. Due to the parent plant's yellow seeds, the F1 plants must have had a distinct genotype.
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Which set of surface soil conditions on a hillside would result in the most infiltration of rainfall?
a. gentle slope, saturated soil, no vegetation
b. gentle slope, unsaturated soil, vegetation
c. steep slope, saturated soil, vegetation
d. steep slope, unsaturated soil, no vegetation
cytokinesis in animal cells is accomplished by constriction of the cell along the plane of cell division (formation of a cleavage furrow). in plant cells, which have cell walls, a completely different mechanism of cytokinesis has evolved. which of the following statements are true of cytokinesis in plant cells? select the two that apply. view available hint(s)for part b cytokinesis in animal cells is accomplished by constriction of the cell along the plane of cell division (formation of a cleavage furrow). in plant cells, which have cell walls, a completely different mechanism of cytokinesis has evolved.which of the following statements are true of cytokinesis in plant cells? select the two that apply. the cell plate consists of the plasma membrane and cell wall that will eventually separate the two daughter cells. after chromosome separation is complete, a network of microfilaments forms near the plane of cell division that will separate the two new cells. the plasma membrane of the parent cell grows inward, eventually joining with the cell plate. vesicles from the golgi apparatus move along microtubules, coalesce at the plane of cell division, and form a cell plate. part c complete previous part(s)
There are two statement that appropriate to this, are:
The cell plate consists of the plasma membrane and cell wall that will eventually separate the two daughter cells.Vesicles from the Golgi apparatus move along microtubules, coalesce at the plane of cell division, and form a cell plate.What happens after cytokinesis in animal cells?Animal and plant cell cytokinesis. An indentation known as the cleavage furrow is created in an animal cell's middle by a contractile ring of cytoskeletal fibers that contracts inward. The mother cell is eventually pinched in half by the contractile ring, resulting in two daughter cells.Abscission is the last stage of cytokinesis in animal cells. The actin-myosin contractile ring that forms the cytokinetic furrow is fully contracted during abscission, and the plasma membranes split to ultimately separate the two cells.Learn more about cytokinesis in animal here: brainly.com/question/17515
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is receptor mediated endocytosis a form of passive or active transport?
Receptor-mediated endocytosis is a form of active transport. This is because it involves the movement of particles, such as large molecules, parts of cells, and even whole cells, into a cell.
What is Active transport?Active transport may be defined as a type of transport that significantly occurs against the concentration gradient. This transport is mediated by carrier proteins. Metabolic energy is utilized in order to move ions or molecules against a concentration gradient.
Receptor-mediated endocytosis involves the utilization of receptor proteins on the cell surface are used to capture a specific target molecule. The receptors, which are transmembrane proteins, cluster in regions of the plasma membrane known as coated pits. They require metabolic energy in the entire process.
Therefore, receptor-mediated endocytosis is a form of active transport.
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Comparing the walls of the atria to the walls of the ventricles in a fetal pig. Which are thicker? Why?
Answer:-The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. The left ventricle also has a thicker muscular wall than the right ventricle, as seen in the adjacent image.
Each side of the heart has an atrium that receives blood from elsewhere in the body and a ventricle that pumps the blood out of the heart
Semilunar valves in the arteries prevent back flow of blood from the arteries into the ventricles. Why are the walls of the atria thinner than the walls of the ventricles? This is because their contractions don't need to be that powerful as the blood only needs to travel down a short distance to the ventricles. Deoxygenated blood enters the heart at the right atrium via the superior vena cava (vein), then travels into the right ventricle which pumps the blood out to the lungs via the pulmonary trunk (artery). After oxygenation, the blood travels back to heart via the pulmonary veins and enters the left atrium.
The process in brewing (beer production) is aerobic tespiration.
Answer: Whilst brewing the ginger beer, the yeast in the brew uses aerobic respiration to produce the alcohol and ethanol inside the ginger beer. The equation for this cellular respiration is C6H12O6 + 6O2 → 6CO2 + 6H2O and in other wise is glucose+ oxygen -> carbon dioxide+ water.
Explanation:
charles darwin wrote that there are three important principles needed for natural selection to be possible. choose them all.
Most attributes are inherited, more offspring are generated than can survive, and offspring with more attractive traits will survive and have more offspring than those with less favourable traits. These three principles result in natural selection, which is an unavoidable process.
what is natural selection?
Natural selection is the process through which specific organisms or phenotypes with advantageous qualities are more likely to survive and reproduce.
Darwin claimed that three factors at work in nature would inevitably lead to natural selection. The majority of an organism's qualities are inherited, or given from parent to child, yet it is unknown how features are inherited. The second problem is that more children are born than can survive. All living things have a higher capability for reproduction than there are resources to support them. In each generation, there is competition for those resources.
Thomas Malthus, an economist, examined this theory in respect to human numbers in an essay that had an impact on both Darwin and Wallace. Third, Darwin and Wallace hypothesized that descendants with inherited traits that provide them the best chance of competing for scarce resources will survive and procreate more frequently than those individuals with variants that are less competitive.
Since attributes are inherited, the following generation will more accurately reflect these traits. Through a process Darwin called "descent with modification," this will cause population changes over many generations. Natural selection is the sole mechanism known for adaptive evolution; in the end, it causes population adaption to the local environment to increase.
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Life on Earth likely evolved from a common ancestor that existed approximately 3.5 billion years ago. Which of these is evidence that all life on Earth shares common features? Select ALL that apply.
Responses
A All life on Earth has DNA as the molecule of heredity.All life on Earth has DNA as the molecule of heredity.
B All life on Earth is made up of cells with a rigid cell wall.All life on Earth is made up of cells with a rigid cell wall.
C All life on Earth performs transcription and translation in a similar fashion.All life on Earth performs transcription and translation in a similar fashion.
D All life on Earth contains mitochondria for cellular energy.All life on Earth contains mitochondria for cellular energy.
E All life on Earth has cells surrounded by membranes.
the evidence that all life on Earth shares common features is that All life on Earth performs transcription and translation in a similar fashion. and All life on Earth has cells surrounded by membranes.
What is transcription and translation?
The process of transcribing a piece of DNA into RNA is known as transcription. Messenger RNA is created when segments of DNA are translated into RNA molecules that can encode proteins. Translation is the process by which ribosomes in the cytoplasm or endoplasmic reticulum create proteins following the transcription of DNA to RNA in the cell's nucleus. The entire process is known as gene expression.
What is cell membrane?
The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment. The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.
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identify the tract system that carries sensory information from the skin to the brain.multiple choice question.
Anterolateral system, a group of ascending channels that connect the brainstem or thalamus to the spinal cord, carrying pain, temperature, and associated touch sensations.
Which sensory tract carries information?There are ascending and descending pathways in the spinal cord. The ascending tracts are sensory routes that pass through the spinal cord's white matter on their way to the brain, carrying somatosensory data.
How does the brain receive sensory data?Electric impulses, or signals, are sent by nerves, which are collections of neural fibers. Sensory neurons carry these signals from the periphery, such as the toe, to the spinal cord and brain.
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What Is the primary substances thst gets nade after photosynthesis?
Answer: The correct answers are glucose and oxygen.
Explanation:
Plants utilize water, sunlight, and carbon dioxide to create the primary products of photosynthesis; glucose and oxygen.
The major advantage that cancer cells have over normal cells with respect to growth signals is that cancer colls: A. can more easily heterodimerize. B. are all receptor tyrosine kinases c. are self-sufficient in producing them. D. send signals to the cell nucleus more rapidly
The major advantage that cancer cells have over normal cells with respect to growth signals is that cancer cells send signals to the cell nucleus more rapidly which is therefore denoted as option D.
What is Cancer?This is referred to as a medical condition in which some of the body's cells grow uncontrollably and then spread to other parts of the body This is treated through different forms and techniques such as the use of chemotherapy and radiotherapy.
Cancer cells however have advantage over normal cells due to their round or elongated and helps the travel in the bloodstream easily than a normal cell which has a spheroid shape.
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(Will mark brainliest)Why are there different types of cells?
A. There are not different types of cells
B. During mitosis, cells become specialized
C different types of cells have different chromosomes in them
D. Gene expression is different between different specialized cells
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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demonstrate your understanding of pancreatic and bile secretion regulation by correctly classifying the terms to the appropriate category.
Cholecystokinin (CCK):
stimulates trypsin, lipase, and amylase from the pancreasstimulates acinar cells using a rise in cytoplasmic calcium as a second messengerstimulated in response to protein and fat content in chymesecretion continues until cyme passes through the duodenum and in the early region of the jejunumSecretin:
potentiates the effects of acetylcholine on the acinar cells through the action of cyclic AMP as a second messengersecreted in response to a decreased duodenal pH below 4.5stimulates the production and secretion of bicarbonate into the pancreatic juicestimulates the bile duct cells to secrete bicarbonate into the bileThe pancreas is one of the organs in the digestive system, which is responsible for secreting enzymes or intestinal juices so that they can break down food.
During the digestive process, the pancreas functions to make fluids called enzymes. These enzymes are then used to break down sugars, fats, and starches. Not just enzymes, the pancreas also helps the digestive system by making hormones. Hormones work to carry chemical messages through the blood
Bile is a secretion of hepatocytes (liver cells) consisting of air, cholesterol, lecithin (phosphatidylcholine), bile salts, bile pigments, and several ions. The color of bile is described as ranging from olive green, and yellow to brown.
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evolution of horses: how horses originated, how they evolved over time, and when they were or were not present on different continents
According to the researchers, the western Eurasian Steppe, present-day Ukraine, and West Kazakhstan are where horses were first domesticated 6000 years ago. The researchers also claim that during the domestication process, the animals frequently bred with wild horses.
What is evolution?
The term "evolution" can be used to describe any net direction change or cumulative change in an organism's or population's traits over many generations, or "descent with modification." It expressly takes into account both the beginning and the spread of alleles, variations, trait values, or character states.
The Eocene Epoch, which lasted from roughly 56 million to 33.9 million years ago, is when the history of the horse family, Equidae, began. Eohippus fossils, which have been discovered in both North America and Europe, indicate that the first ancestral horse originally existed during the early Eocene.
Hence is the history of evolution of horses
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the____ is a lacy membrane surrounding myofibrils that plays an important role in triggering muscle contraction.
The plasma membrane of a skeletal muscle fiber is called the sarcolemma.
What is muscle contraction?
The activation of tension-producing regions inside muscle cells results in muscular contraction. Because muscular tension may be created without changes in muscle length, such as when holding something heavy in the same posture, muscle contraction does not always imply muscle shortening in physiology. Muscle relaxation, or the return of the muscular fibers to their low tension-generating condition, occurs after the end of muscle contraction.
When you do an activity, your muscles tighten, shorten, or lengthen as a result of the contraction. It may occur while holding or picking up something, stretching, or doing weight training.
Hence, The plasma membrane of a skeletal muscle fiber is called the sarcolemma.
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Which of the following statements identifies a concern associated with the increased proportion of GM crops being grown?
A
Planting GM crops results in reduced crop yield, which causes more land to be put into production.
B
Use of GM seeds can lead to loss of genetic diversity in crops.
C
GM crops cannot be grown in marginal soils.
D
Runoff from GM crop fields can lead to increased eutrophication.
E
GM crops cannot withstand herbicide application, reducing crop yield.
Use of GM seeds can lead to loss of genetic diversity in crops. Therefore, option (B) is correct.
What are GM crops?Crops that have undergone genetic engineering techniques to alter their DNA are referred to as genetically modified crops. Plant genomes may be modified physically or by transferring sequences contained in T-DNA binary vectors using Agrobacterium.
The emergence of insect pests and weeds that are pesticide-resistant are two practical issues with GM crops. Other issues with GM crops include farmers' access to a wide range of seed varieties, increasing seed prices, and a growing reliance on multinational seed corporations.
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All of the following are part of Darwin’s theory of natural selection EXCEPT
a. Populations tend to overpopulate.
b. Only the best-fit individuals survive and get to pass on their genes.
c. Overpopulation leads to a struggle for existence.
d. Individual organisms change in response to their environment and the needs of their surroundings.
Answer:
a. Populations tend to overpopulate
Explanation:
T/F. pcr can make millions of copies from a minuscule amount of dna. therefore, it can be used to exonerate people who have been in prison for many decades on the basis of one hair found at the crime scene.
True, PCR can make millions of copies from a minuscule amount of DNA. therefore, it can be used to exonerate people who have been in prison for many decades on the basis of one hair found at the crime scene.
What is PCR?
A given DNA segment may be quickly multiplied (amplified) into millions or billions of copies using the polymerase chain reaction (abbreviated PCR), allowing for more in-depth analysis. In PCR, a section of the genome to be amplified is chosen using short synthetic DNA fragments called primers. Multiple rounds of DNA synthesis are then used to amplify that segment.
Steps in PCR:
collection, preparation, amplification, and post PCR clean-upTherefore, the statement is true
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Which of the following characterizes both tundras and taigas?
a. Long and cold winters
b. Very few to no trees present
c. Permanently frozen subsoil
d. Dominated by firs and spruces
What is the highest and
most general level of
classification?
A. Kingdom
B. Genus
C. Species
D. Domain this
Answer:
d) Domain
Explanation:
Domain is the highest and most general level of classification. The order is :- Domain > Kingdom > Genus > Species. Hence, the option (d) is the correct answer.
Name and describe each of the four processes of mechanical weathering(8 pts)
PLEASE HURRY DUE DEC 9th!!!!
(this is earth and space science they didn't have an option for it lol)
The breaking down of rocks at the Earth's surface by the effects of precipitation, temperature extremes, and biological activity is known as weathering. There is no rock material removal involved. There are three types of weathering, physical, chemical, and biological.
What are the processes of mechanical weathering?A substance that exerts force on a rock, such as ice, rushing water, wind, quick heating or cooling, or plant growth, fractures the rock mechanically or physically.
Therefore, By means of mechanical weathering processes, rock is physically broken down into smaller bits. Abrasion, frost wedging, pressure release (unloading), and organic activity are some of these mechanisms.
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classify each phrase as applying to the lytic cycle, the lysogenic cycle, or both types of reproductive cycles of phages. drag the descriptions into the appropriate bins. view available hint(s)for part b resethelp
The hosts and cell within the host that viruses infect tend to be quite specialised.s
Bacteriophages
Bacteriophages are bacteria-infecting viruses.
A few viruses can perform both lytic and lysogenic cycles, which are the two possible life cycles for bacteriophages. When a bacteriophage infects a cell, new virions are produced. latency: A pathogenic virus's capacity to lay dormant inside a cell.
A virus known as a bacteriophage targets bacteria only.
lytic cycle: The typical viral reproduction process that involves nucleic acid synthesis, cell membrane penetration, and host cell lysis.
lysogenic cycle: A method of viral reproduction in which a bacteriophage's and a host's nucleic acids combinecombine
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A teacher soaks eggs in vinegar overnight to remove the hard, outer shell. Each student is given two eggs and asked to place one in a cup filled with distilled water and the other in a cup with corn syrup.
What would you expect to happen to the egg in the distilled
1x water?
×
A
The egg will stay the same size as the amount of fluid leaving and entering the cell are at equilibrium.
1x
B
It will shrink as the yolk inside the cell shrinks.
1 x
C
The egg will regrow its hard, outer shell.
×
D
It will grow bigger as water enters the cell
What type of solution is the distilled water?
×
x
A
isotonic
x
B
hypertonic
1x
C
hypertonic
D
hypotonic
Answer: The egg will swell and continue to gain mass.
Explanation:
The paramecium is a single-celled freshwater protist that responds to changes in its environment in order to maintain homeostasis. The contractile vacuole actively pumps water out in order to prevent the cell of the paramecium from lysing (bursting) when excess water flows into the cell. A student tests the action of the paramecium underwater levels of varying salinity.
Which hypothesis correctly describes the predicted activity of the contractile vacuole under changing water and solute concentrations?
×
A
As the solute concentration of the water increases, the rate of contractions by the vacuole will increase.
×
B
As the solute concentration of the water increases, the rate of contractions by the vacuole will decrease.
x
С
As the solute concentration of the water decreases, the rate of contractions by the vacuole will decrease.
x
D
As the solute concentration of the water decreases, the rate of contractions by the vacuole will remain the same.
Submit
Answer: I WISH I COULD HELP YOU
Explanation:
Answer:
I just answered this question and from your choices it would be B! Hope that helps :)
Explanation:
Which of these needs to be done by a scientific committee before the drug is made available to the general public
The needs which have to be done before the drug is made available to the general public is to ensure it is effective and safe for use by individuals which is therefore denoted as option B.
What is a Drug?This is also known as medication and it consists of chemical substances which are used to treat different types of sickness or illness and an example is Paracetamol which is used to treat fever etc.
There are different types of researches and findings which are done by scientists when a drug is being formulated. This is done so as to maximize its effect and an example is testing its active ingredient so as to determine its efficacy.
Another activity which needs to be done is to test its safety as this helps to ensure that there are no serious side effects or complications arising from the use of the drugs thereby making it the correct choice.
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The options are:
Drying and ColoringSafety and efficacyStorage and packagingWhat is the BEST description of how this tree grows in size?
Answer:
option 3
Explanation:
all stem cells will be growing that's just how it works! as stem cells grow the tree will grow with them into an adult