The male fiddler crab wave his claws to attract the attention of females in the environment, being that a known mating technique within the species. Therefore, it is a survival behavior that guarantees the dissemination of genes (male that have mating success) and reprodution inside the species.
will a diamond leave a streak on a streak plate? explain
(01.03 LC)In order to measure the mass of water, it needs to bein a containerin spaceITon a surfacewarmed up
Answer:
-In a container
Explanation:
The mass of a liquid can be measured by knowing the density and volume. The volume can be known if I put the liquid in a container whose volume is known or in a graduated container.
What type of relationship
exists in microbiomes
between bacteria and
humans?
A. Predator/Prey
B. Competition
C. Mutualism this
D. Parasitism
Answer:
c) Mutualism
Explanation:
Mutualism is the type of relationship which exists in microbiomes between bacteria and humans. Hence, option (c) is correct.
Mutualism is a type of relationship exists in microbiomes between bacteria and humans.
Option C is correct.
What is the connection between bacteria and people?The human intestine and many of its symbionts have a mutually beneficial relationship in which the intestine supplies nutrients to the resident bacteria while the bacteria help with food digestion and nutrient absorption, produce vitamins like biotin and vitamin K, and control immune system activity.
What kind of connection exists between microbes and humans?Individual variations in the microbiome influence host health, may be implicated in disease genesis, and affect drug metabolism, toxicity, and efficacy. Humans have established intimate symbiotic connections with a consortium of gut bacteria (microbiome).
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what does refractory period mean?
The refractory period is the time in which the cell membrane remains depolarized, that is, it does not react to a second stimulus. It takes place after an excitation of the cell.
In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific community?
a. Chromosomes are made up of protein and nucleic acid.
b. Chromosomes are found in the nucleus.
c. Genes are made of DNA.
d. Genes are located on chromosomes.
The concepts that were well accepted by the scientific community In the 1950s, when Watson and Crick were working on their model of DNA were chromosomes are made up of protein and nucleic acid, chromosomes are found in the nucleus, and genes are located on chromosomes (Options a, b and d).
Who are Watson and Crick?Watson and Crick are two molecular biologists who in 1950 discovered the double helix structure of the DNA molecule, which required the use of previous evidence such as the presence of chromosomes in the nucleus and X-ray diffraction.
Therefore, with this data, we can see that Watson and Crick discover the double helix DNA structure.
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In the 1950s, when Watson and Crick were working on their model of DNA, the following concepts were well accepted by the scientific community:
a. Chromosomes are made up of protein and nucleic acid
b. Chromosomes are found in the nucleus
d. Genes are located on chromosomes
So, options A, B and d were correct.
What are chromosomes?A chromosome is described as a long DNA molecule with part or all of the genetic material of an organism.
By the year 1940 it was known by scientists that chromosomes are made up of protein and nucleic acids and chromosome carries the genetic material but at that time it was thought that protein part of the chromosome is the genetic material.
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What process can only be carried out byplants when in the presence of light?A. homeostasisB. light-dependent reactionsC. cellular respirationD. dark reactions
The process that can only be carried out byplants in the presence of light-dependent reactions. These reactions convert light energy to chemical energy and is present in the process of photosynthesis. The energy from the sun together with water is being broken down to give rise to ATP and NADPH which are used in light-independent reaction or dark reactions.
Cellular respiration does not use light since it is not dependent on light. Dark reactions are light-independent processes. Homeostasis is the maintenance of the internal environmentr of an organism in order to survive.
Answer - B light-dependent reactions
Answer: B. light-dependent reactions
Which statement best describes ecological succession?
A) It is always caused by human intervention.
B) It occurs after a disturbance.
C) It never occurs in a predictable pattern.
D) It is a series of rapid changes in an ecosystem.
Answer:
(D) it is a series of rapid changes in an ecosystem
Explanation:
need help with this problem 1. why do you think fossils are important to the study of evolution?2. Do you think the word transitional is a scientifically appropiate description for fossils?3. Knowing how fossils form, do you think it's likely that humans will ever piece together a complete fossil record for every species that ever existed on earth? why or why not?
1) Fossils are the preserved remains of traces of organisms from the past so they are very important evidence for evolution. They show extinct organisms that were very different from any now living, it also shows successions of organisms through time. Fossils tell us when organisms lived, they provide evidence for the progression and evolution of life on the earth over millions of years.
The table lists traits and whether they arerecessive or not for two parents. Based on thedata table, if the parents reproduce and create anoffspring, the offspring will-A. definitely have red hair and most likelyhave brown eyes.B. most likely have brown hair and definitelynot have blue eyes.C. most likely have brown hair and definitelynot have blue eyes.D. most likely have red hair and maybe haveblue eyes.
If the parents reproduce and create an offspring, the offspring will definitely have red hair and most likely have brown eyes.
This is because both parents have red hair so they must be homozygous for that character, and as the mother has brown eyes, which is dominant, it is more probable that the phenotype will be expressed by their offspring.
What structure of the leaf transports water and nutrients from the roots to the leaves?A. Cell wallB. ChloroplastC. PhloemD. Xylem
The correct answer is the letter D. XYLEM
Xylem is a main component of vascular tissue in plants that is responsible for transporting water and nutrients from roots to plants' leaves.
In spermatogenesis, __i___ ___ii______ cells are madeSelect one:a.i-4, ii-uniqueb.i-1, ii-uniquec.i-1, ii-identicald. i-4, ii-identical
Spermatogenesis
In spermatogenesis, since the cell division process of the germ line called meiosis is involved, 4 cells are generated, all genetically different from each other.
Therefore, the correct answer to this question is option a.
4. There are several biomes that are not marked "diverse" or "non-diverse." How would you describe those biomes? (3 points)
Biomes are large areas characterized by its soil, climate, vegetacion, and wildlife. There are five major types of biomes: grassland, florest, tundra, desert, and aquatic, they still can be divided into more specific categories, such as marine (aquatic), rainflorest (florest), savanna (grassland/desert), and others. The diversity of these biomes can be based in the animails and plants of the biome, diverse biomes have a wide variety of species and are considered more livable with less environment pressure and challenges that make the area more conducive to higher diversity. The Topical florests are widely considered to have the greatest species diversity of the terrestrial biomes, with nice climate and food for the wildlife. The non-diverse biomes have extreme conditions that make them have lower diversity, for example, tundra and deserts have low diversity because of the climate and the condictions of soil and water.
Which of the following is an Autotroph?A. TigerB. Primary consumerC. OaktreeD. Decomposer
Answer
C. Oaktree
Explanation
Animals like the tiger must make their own food and these are termed heterotrophs.
Use the internet to research advertising materials for electric cars. Draw inferences from the advertisements about the relationship between electric cars and fossil fuel use. Then, research credible sources to determine if the claims of the advertisements are accurate. As you are researching, think about whether there is any important or relevant information excluded from the advertisements. If so, what information is left out? If that information was included in advertisements, how would it alter a buyer's opinion of electric cars?
Answer:
Electric vehicles (EVs) offer an opportunity to replace fossil fuels in the transport sector. Electrification of the transport sector can also bring benefits in terms of increased energy efficiency and reduced local pollution. However, there are genuine concerns about meeting the future energy demand for charging EV batteries with clean and renewable sources. More importantly, the issue of long-term sustainability of EVs is underscored by the supply risks of critical material resources used in the EV batteries. Extraction of some of these material resources are linked to significant environmental impacts as well as social and ethical issues.
Explanation:
Which of the following statement about nucleic acids is incorrect?O DNA and RNA both have adenine, guanine and cytosineO DNA has thymine, RNA has uracilO DNA is a double strand, RNA is a single strandO DNA has ribose sugar, RNA has deoxyribose sugar
The incorrect statement about nucleic acids is that DNA has ribose sugar, RNA has deoxyribose sugar
Which nervous structure is responsible for vision and is located at the posterior
portion of the cerebrum?
Oparietal lobe
O temporal lobe
Ofrontal lobe
O occipital lobe
The back portion of the brain that controls vision is called the occipital lobe.
What is the occipital lobe?
One of the four main lobes of the cerebral cortex of the mammalian brain is the occipital lobe. The name is a result of where it is located on the back of the head. The majority of the physical region of the visual cortex is located in the occipital lobe, which is the mammalian brain's visual processing hub. Of the four paired lobes in the human brain, the two occipital lobes are the tiniest. The posterior cerebrum includes the occipital lobes, which are situated in the back of the skull. The lobes of the brain are named from the overlying bone and the occipital bone overlies the occipital lobes.
Hence, the answer is the occipital lobe.
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The information below shows the different genotypes that were observed during the meiosis simulation and the number of copies of each genotype that were present at the end of all rounds of meiosis. Use this info to answer the below question:
EAD- 6
EaD- 19
Ead- 25
eAD-25
eAd- 19
ead-6
Which genotype that were observed in one or more daughter cells was also present in the parental cell?
Which were ONLY in the daughter cell? Which were ONLY in the parental cell?
Ead-25 genotype that were observed in one or more daughter cells was also present in the parental cell.
EAD- 6 genotype were ONLY in the daughter cell.
What do you mean by genotypes?An organism's genotype is its specific combination of alleles for a given gene. So, for example, in the pea plants above, the possible genotypes for the flower-color gene were red-red, red-white, and white-white. The phenotype is the physical manifestation of an organism's allelic combination.
Moreover, genotype, the genetic constitution of an organism. The genotype determines the hereditary potentials and limitations of an individual from embryonic formation through adulthood. Among organisms that reproduce sexually, an individual's genotype comprises the entire complex of genes inherited from both parents.
Hence, alleles of the same gene are either autosomal dominant or recessive. An autosomal dominant allele will always be preferentially expressed over a recessive allele. The subsequent combination of alleles that an individual possesses for a specific gene is their genotype.
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What is sustainability in biology
General category: Biology.
Sub-category: Ecology
Topic: Natural resources
Introduction:
The term sustainability describes how biological systems remain diverse and productive over time.
Explanation:Sustainability refers to how biological systems remain productive over time. In particular, the term sustainability is described as the balance of a species with its resources in its specific environment. On the other hand, sustainable development is exercising the correct use of current resources without compromising those of future generations. Therefore, sustainable processes preserve, protect and conserve current and future natural resources.
We can conclude that the correct answer is:
Answer:Sustainability refers to how biological systems remain productive over time. In particular, the term sustainability is described as the balance of a species with its resources in its specific environment.
1. A student prepared three different red blood cell suspensions as follows:SuspensionContentsA red blood cells + normal blood serumB red blood cells + 10% salt solutionсred blood cells + distilled waterWhich suspension, when viewed under the microscope, would contain red blood cells that appear wrinkled and reduced in volume?O Suspension AO Suspension BSuspensionООO None of these suspensions
Suspension B will have cells that appear shrinked
Energy flows in _____________ direction, and matter _______________ through the environment.
Choices
chemical, seven, ATP, one, six, carbon dioxide, radiant, bacteria, cycles
Matter cycle through the environment as energy flows in a single direction.
What is bacteria?Bacteria are common, mostly free-living organisms having an unusual single biological cell. They account for a large chunk of the prokaryotic microbiological kingdom. Bacteria, which are typically a few micrometers long and were some of the first living organisms to appear on Earth, are found in the majority of its habitats. Bacteria are little, single-celled organisms that draw nutrition from their surroundings. In some circumstances, your child or another living thing is that environment. Some bacteria are beneficial to human bodies because they maintain the digestive system functioning properly and prevent the entry of dangerous germs.
What are the Characteristics of Bacteria?The DNA in bacteria, which are prokaryotes without a nuclear envelope, is found suspended inside the cytoplasm. Bacteria are categorized according to their morphology and how they respond to the Gram stain in a laboratory setting. Gram-positive or Gram-negative bacteria can both exist. Gram-negative bacteria have a thin peptidoglycan coating and outer lipid layer, which prevents them from reacting to the Gram stain. Because they lack the outer lipid layer and have a stronger peptidoglycan layer, gram-positive bacteria do stain.
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37. Which of Mendel’s laws states that two alleles for each trait separate duringmeiosis?A. law of independent assortmentB. law of segregationC. law of hybrids
The correct option is B. Law of segregation.
6 Before she leaves for school, Zari receives a text from her mom asking her to grab the chicken for tonight’s dinner out of the freezer to thaw. Where should Zari place the chicken so that it is ready when her mom gets home to start dinner? A. on the counter B. in a bowl of warm water C. in the refrigerator D. in the oven on low temp
Zari should place the chicken on the counter .
Zari should place the chicken on the counter because mom needs the chickens for dinner in night . Thawing means to go from frozen to liquid or soft usable form .
Thawing is needed for making the freeze materials into usable form that requires melting of ice and becoming soft . People use to preserve chickens in the refrigerator for long and safe use . But , before cooking the chicken it is needed to be thawed so to melt the ice and in order that is should be cooked properly .
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Why cant plants and animals cant use nitrogen as it is in the atmosphere?
The most abundant naturally occurring gas in the atmosphere is the Nitrogen (N2); however, plants and animals are unable to use this directly because of their inability to break down its triple bond. In order for them to utilize this gas, it must be transformed into another form or molecules. There are ways where to convert nitrogen to make it useful for the plants and animals.
The first one is lightning. At the time when lightning strikes, nitrogen gas is transformed into nitrates by which plants can use.
The second one is through the process of nitrogen fixation. In this process, special nitrogen-fixing bacteria helps in converting this gas into useful forms.
Lastly, when there is a decaying organism. Nitrogen is released in the form of ammonium.
Which of the following statements could be applied to "internal respiration"?
External respiration refers to inhalation and exhalation; while internal respiration is the exchange of oxygen and carbon dioxide between the cells and blood cells.
This means C, exchange of dissolved gases between blood in tissue capillaries and the body tissues, is the right answer.
Which of the following describes the significance of sequence of an individuals DNA?
B: The sequence of the DNA determines and individual's traits
A cannot be the answer because while there is a part of a DNA sequence that determines the sex of an individual, there is far more to it. C is not the answer because there isn't necessarily a code for mutations, it's something that happens. D is not the answer because someone's genes are set.
Question Two:
C: Meiosis
Fertilization is the process that occurs when a sperm cell meets an egg cell. Mitosis is how regular cells reproduce. Replication is when DNA reproduces. Therefore, the answer is Meiosis.
At which concentration of NAHCO3 is the rate of Photosynthesis at its optimum?
As we can see, throughout the experiment, most of the variables, such as sunlight, size or temperature remained constant with NaHCO3 concentration being the only variable that changed.
NaHCO3 provides CO2 in the aquatic environment and therefore stimulates photosynthesis by increasing the average oxygen obtained in the 5 tests.
However, photosynthesis is no longer stimulated after reaching a concentration of 80 g/L NaHCO3.
Therefore, we can expect that at higher concentrations (120, 140, etc.) there is no significant change and therefore, the optimum NaHCO3 concentration would be 80 g/L NaHCO3.
You will be manipulating the simulation to determine which color of light produces the greatest rate of photosynthesis in the plant.What is the independent variable in this lab (the variable that you are changing)?Question 6 options:colors of light plant growthmoisture
An independent variable is that which one can change at will, considering the different purposes of a particular research or experiment. In this case, then, the independent variable would be the colors of the light, and the dependent variables would be those related to plant growth, and moisture, since are factors that are regulated by the intensity or the color of the light (we have to know that different colors of light will have different wavelengths, in hence, different temperatures).
The Endocrine and Exocrine systems are similar because:A. They both transport products through the bloodstream.B. They both produce and secrete products.C. They both use ducts.D. They both use hormones.
Both endocrine and exocrine systems are sililar because they function is to produce and secrete substances that are important for different processes of the body, being the alternative with the best answer the letter B (they both produce and secrete products).
The result of the following cross indicates the orange eyes are _____ black eyes.
The result of the following cross indicates that orange eyes would be recessive to black eyes.
According to Mendel, a cross between two people who are heterozygous for a dominant trait would result in offspring with a 3:1 phenotypic ratio, with the dominant trait making up around 75% of the phenotype and the recessive trait making up the remaining 25%.
The black eye color phenotype in this instance is 247, whereas the orange eye color phenotype is 86.
Calculating each trait's proportion
247/333 ×100%, or 74.1%, are black eyes.
Orange eye: (86/333 x 100%) = 25.8%
74.1:25.8 is approximately 3:1
It follows that black eyes are dominant and orange eyes are recessive.
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The given question is incomplete. The complete question is:
The result of the following cross indicates the orange eyes are _____ black eyes. A cross between two aliens with black eyes. Their offspring have two phenotypes. 247 of them have black eyes, and 86 of them are orange-eyed. The total number of offspring is 333.
Which is an example of an organ systemA.the compartments that make up the liver and control its function.B.the brain, spinal cord, and nerves working together for one purpose.C.the lining of the intestine.D.lungs taking in oxygen.
An organ system is a group of organs that work together to do a certain function in the organisms body. This can be seen in the alternative B, that represents the nervous system (the brain, spiral cord, and nerves working together for one purpose).