Trait formation due to behaviours, Thus, option "D" is correct.
What has most likely caused the variation in forelimbs?It is obvious to see that the three animals, cat, whale, and bat, have the same basic structure of their forelimbs, but also that they have developed differently and have taken a new shape. The reason for this is a trait formation due to behaviour.
The cat's ancestors were terrestrial, and the cats have remained terrestrial, walking on their four legs, and having the same shape and function as their ancestors.
The whales had similar forelimbs, but their ancestors started to move more and more in water. As they did, they needed more muscle power, but also greater width of the forelimb so that they can move more easily and more efficiently in the water.
This behaviour has gradually resulted in a flat, strong, peddle-like forelimb. The bat too had similar forelimbs to that of the cat, but its ancestors started to try to fly.
The process was gradual, and it started with jumping, then longer jumps, development of skin between the fingers, and elongation of the fingers, thus providing more area for the development of wider skin area. This has resulted in developing a light, wide, skin-dominated forelimb with elongated fingers, providing flight for the bat.
Thus, option "D" is correct.
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The field of science that deals with the analysis and comparison of DNA in organisms is called ____________.
Answer:
it is called Genetics
Explanation:
Genetics is the scientific study of genes and heredity of how certain qualities or traits
Hope This Helped
The field of science that deals with the analysis and comparison of DNA in organisms is called Genetics
Types of Genetics:
1. Single gene inheritance.
Multifactorial inheritance.
Chromosome abnormalities.
4.Mitochondrial inheritance
It is oncerned with the study of genes, genetic variation, and heredity in organisms.
Genetics is used in the following
Understanding disorders.
Diagnosing disorders.
Diagnosing genetic disorders before birth.
Responding to drugs.
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Why is a cell theory called a scientific theory?
Answer:
C
Explanation:
because cell theory is proposed by several scientists means scientists has research depend on many evidence and after that they have agreed in cell theory
Which properties are characteristic of metalloids
Answer:
1) Metalloids are solids.
2) They have a metallic luster, and generally look like metals.
3) They are brittle, and easily shattered.
4) Metalloids can conduct electricity, but not as well as metals.
With reference to the diagrams below, describe how fishes and bottom dwelling polychaete worms cope with the fluctuating salinity within estuaries over the tidal cycle.
Fishes and bottom dwelling worms cope with the fluctuating salinity within estuaries over the tidal cycle with the use of transport system such as active and passive transport.
How active and passive transport system are used?In salty water, fish and other marine organisms used active transport in which energy is used to remove salts from the body of these marine organisms because excess salts are harmful for them.
So we can conclude that Fishes use transport system such as active and passive transport to cope with the fluctuation of salt concentration.
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3. Which of the following provides the best description of active transport of
materials across the cell membrane?
A:Active transport does not require energy and moves materials from areas of
relatively higher to lower concentration.
B:Active transport requires energy and moves materials from areas of
relatively lower to higher concentration.
C:Active transport does not require energy and moves materials from areas of
relatively lower to higher concentration.
D:Active transport requires energy and moves materials from areas of
relatively higher to lower concentration.
Answer:
B. Active transport requires energy and moves materials from areas of relatively lower to higher concentration.
Explanation:
Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane of a cell. Which of the statements describe properties of exocytosis?
Exocytosis uses membrane channel proteins to export materials from the cell.
Exocytosis is the primary method of transporting large molecules into the cell.
Exocytosis uses transport vesicles to export materials from the cell.
Exocytosis is the primary method of transporting large molecules out of the cell.
Exocytosis uses transport vesicles to import materials into the cell.
Exocytosis is the primary process by which materials are sent out of the cells.
What is exocytosis?Exocytosis refers to the processes by which materials produced or synthesized within cells are taken out of the cell.
The process of exocytosis is important for cell to remove wastes as well as to send substances produced in specific cells to where they are needed.
The properties of exocytosis include
Exocytosis uses membrane channel proteins to export materials from the cell.Exocytosis uses transport vesicles to export materials from the cell.Exocytosis is the primary method of transporting large molecules out of the cell.Therefore, exocytosis is the primary process by which materials are sent out of the cells.
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Describe the way the heart is pumping and creating cardiac output,What are factors that can change cardiac output? Explain the sounds of the heart and why they are important. Explain in complete detail the steps of blood flow through the heart and in to and back from the different circuits of the body (provide full structural and functional detail of every structure you pass along the way).
Blood volume reflexes, hormones, body temperature, emotions, gender and age are the factors that affect cardiac output.
What are factors that can change cardiac output?Factors that affect cardiac output are changing heart rate and stroke volume. Other factors include blood volume reflexes, hormones, body temperature, emotions, gender and age.
Heart sounds are created from blood flowing through the heart chambers when the cardiac valves open and close during the cardiac cycle.
Our heart sends the blood to the lungs, where it receives oxygen and dispose carbondioxide. Then, your heart pumps the oxygenated blood to the tissues and organs throughout your body.
So we can conclude that blood volume reflexes, hormones, body temperature, emotions, gender and age are the factors that affect cardiac output.
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21. Which direction does the arrow point in a food web?
O downward
O to the animal being consumed
O to the animal consuming
O always toward a producer
Answer:
To the animal consuming
Explanation:
this is what I mean by saying that the arrow points to the animal consuming: in this case the animal consuming consumes whatever is written behind it ie in the example given the locusts will feed on the grass which is the producer that will feed on the locust something else will feed on the rat and that's how the chain goes so the arrow is always pointing to the eater and before it is what it consumes. have a nice day hope it helped if not feel free to ask me or tell me.
3. Which one of the following is not a biome? (1) tundra (2) tropical rain forest (3) mountain (4) savannah
Answer:
Mountain
Explanation:
Its pretty obvious
Provide practical examples of passive (natural and artificial) and active (natural and artificial) immunities?
Answer:
How many countries are the original members
A patient is admitted to the hospital with blood clots despite taking her anti-coagulation medication. During your assessment, you identify she recently started taking a supplement.
The supplement being taken is Vitamin K in this type of scenario.
What is Vitamin K?This is a type of vitamin which is responsible for the clotting of blood and healing of injuries in the body.
This is achieved by coagulation of the blood to stop bleeding however since the patient has blood clots and takes anti-coagulation medication it is best to avoid vitamin K.
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How can inheritance of traits affect a crop’s ability to survive disease?
What is the role of the nervous system in digestion?
Answer:
to provide passage of nutrients throughout the body.
Answer:
This system coordinates digestion, secretion, and motility to achieve adequate nutrient absorption.
Explanation:
Enteric nervous system- is the intrinsic nervous system of the GI tract, containing a mesh-like system of neurons
Which of the following is the most important reason that a scientist should
replicate his or her experiments?
OA. To make sure that differences in the data are caused by real
differences and not by error
OB. To make sure that other scientists do not have to waste time
replicating this scientist's experiments
C. To practice the experimental procedures until the scientist is an
expert at performing them
D. To prove the scientist's hypothesis
Answer:
D. the only method of scientific investigation is in essence demonstrating the hypothesis is valid through repeated and more vigorous investigation using sound experimental techniques to produce the same or very similar results, ideally obtained from larger scale longitudinal studies, increasing sampling size and scale to lend greater and greater quality data on any query
A person has two genes, A and B that are on the same chromosome and 25cM apart, what percentage of their gametes would you expect to have parental combination of A and B
The percentage of your gametes that are expected to have a parental combination of A and B is 25%.
Why is AB blood so rare?Even rarer, type AB blood is characterized by the fact that it has no antibodies against either type A blood or type B blood. This means that people of this blood group can receive blood of any type without risk of adverse reactions.
With this information, we can conclude that The percentage of your gametes that are expected to have a parental combination of A and B is 25%.
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__________ is a premature judgment or opinion that is formed without examination of the facts.
A premature judgment that is formed without facts examination is recognized as discrimination. The correct option is a.
What is discrimination?The unjust or prejudiced treatment of many groups of individuals, particularly on the basis of color, age, gender, or handicap is referred to as discrimination.
The missing options of the question are:
Discrimination.Gentrification.Stereotype.Prejudice.A premature judgment that is formed without facts examination is recognized as discrimination.
Thus, the correct option is a.
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If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the field?
O The bird population would stay the same
O The bird population would decrease
O The bird population would infinitely increase
Respiration in Organisms:- Visit the doctor. Learn about the various diseases related to respiratory system. What are the measures that may be taken to prevent them? Prepare a chart incorporating that measures and present in the class.
The diseases associated with the respiratory system include asthma, chronic obstructive pulmonary disease (COPD), lung cancer, etc.
What are respiratory diseases?Respiratory diseases are different types of conditions/disorders that affect our respiratory airways.
These types of diseases (respiratory diseases) hamper our ability to take oxygen from the air.
In conclusion, The diseases associated with the respiratory system include asthma, chronic obstructive pulmonary disease (COPD), lung cancer, etc.
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The 4 types of microscopes, their descriptions, and an example use are:
Answer:
1compound Light microscope
stereoscopic
transmission electron
scanning electron
In DNA Replication, ATTTGC is complementary to TAAACG. True or False?
Answer:
True.
Explanation:
It's commonly known that adenine pairs with thymine and guanine pairs with cytosine following complementary base pairing.
The statement "In DNA Replication, ATTTGC is complementary to TAAACG" is definitely true.
What is DNA replication?DNA replication may be defined as the biological process through which two identical replicas of DNA are formed from one original DNA molecule. It occurs in all living organisms acting as the most essential part of biological inheritance.
The process of DNA replication is commonly known for some complementary sequences. For example, adenine pairs with thymine, and guanine pairs with cytosine which effectively follows the process of complementary base pairing.
This base pairing of nucleotides will follow Chargaff's rule which states that the amount of adenine is always equal to the amount of thymine, while the amount of guanine always equal to the amount of cytosine.
Therefore, the statement "In DNA Replication, ATTTGC is complementary to TAAACG" is definitely true.
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Could anyone please help me with this biology lab? Thank you :)
Look at these images, the oldest is at the bottom, the newest is at the top, so the drawings are next to time zones are properly set up, so next to the time scale is when the drawing next to it was made.
Are these answers correct? If not please tell me the correct answers
Answer:
2 is incorrect
Explanation:
Robert Hooke was the first one to use the term ‘cell’.
Other than that it looks good :)
Hope this helps! Have a great day!!
Answer:
2.answer is B /use the term "cell"
3.C
how many half-lives have lapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14
2 half-lives have elapsed to yield 125 atom of the original sample
Half of the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5730 years. In other words , after 5730 years ,only half of the original amount of 14 c remains in a sample of organic material . Imagine that you start out with 100 grams of carbon 14 . The half -life is the time it takes for half of given amount of isotope to decay .
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RNA Polymerase utilizes a strand of DNA to create a new complementary strand of RNA.
True or False?
RNA Polymerase utilizes a strand of DNA to create a new complementary strand of RNA. This statement is True.
What is Transcription?Transcription is defined as the process of copying a segment of DNA into RNA. These segments of DNA are transcribed into RNA molecules that can encode proteins which is called as messenger RNAs are produced. Other segments of DNA are copied into RNA molecules called non-coding RNA while mRNA comprises only 1–3% of the total RNA sample.
The main steps of transcription are as follows:
1. Initiation
2. Promoter clearance
3. Elongation
4. Termination
RNA polymerase is the type of enzyme used in transcription which is a multi-unit enzyme responsible for creating a complimentary strand of nucleic acid called RNA from a single stranded DNA template through the incorporation of adenosine, cytosine, guanine and uracil nucleotides.
Thus, RNA Polymerase utilizes a strand of DNA to create a new complementary strand of RNA. This statement is True.
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Can someone please help me with these questions
Answer:
1) C
2) C
3) A
Explanation:
Hope this helps! Have a great day!!
Identify the structures in the cell pictured on the
right.
Label A
Label B
Label C
Label D
Label E
Answer:
Label A = Nucleus
Label B = Cytoplasm
Label C = Ribosomes
Label D = DNA
Label E = Cell Membrane
Explanation:
Hope this helps :)
The person above me is correct :)
A. Nucleus
B. Cytoplasm
C. Ribosomes
D. DNA
E. Cell membrane
Have a good day <3
- Correct on Edge 2022.
Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. A parakeet that is heterozygous for blue feathers (dominant) is crossed with a parakeet that is homozygous for white feathers (recessive).
A parakeet with white feathers. A parakeet with blue feathers.
According to the Punnett square for this cross, what percentage of offspring is predicted to have blue feathers?
25 percent
50 percent
75 percent
100 percent
Answer: 50% of the offspring are predicted to have blue feathers.
Explanation:
Simple DominanceI'm going to assume since the problem didn't say otherwise that we're working with simple dominance. This is usually the first kind of inheritance that we learn about in school.
For every gene, there are two alleles, a dominant allele (B), and a recessive allele (b). We represent these as a capital letter and a lower case letter. For this problem, let's use a 'B' for blue. There are three combinations that these can come in:
If the alleles are the same, we say the organism is homozygous for the gene. If it has one of each, then the organism is heterozygous.
In simple dominance, if there's a dominant allele present (B), the organism will always show the dominant phenotype (in this case, blue feathers). So, the only offspring that can have white feathers are the ones with a bb genotype.
Punnett SquareA punnet square is a tool used by biologists to determine the probability of two organisms' offspring having certain genotypes. For this simple cross, where we have one gene with two alleles, we just need a 2x2 square. On either side of the square, we're going to put the two alleles of each parent. Then, we'll take each allele on top and add it to the boxes beneath it. Finally, take the alleles on the side and place them in the boxes to their right. I'll attach the completed square to my answer.
Once the entire square is filled in, we'll see the following results:
Bb x2bb x22/4 offspring will have a heterozygous genotype (Bb) and therefore have blue feathers.
2/4 offspring will have a homozygous recessive genotype (bb) and have white feathers.
So, one-half, or 50%, of the parakeets' offspring will have blue feathers.
Answer:
50%
Explanation:
hope this helps
Which type of energy resource does not use a turbine to generate electricity?
A. Petroleum
B. Sunlight
C. Biomass
D. Coal
Sunlight energy source does not use a turbine in order to generate electricity.
Which type of energy resource does not use a turbine to generate electricity?Sunlight is a type of energy resource does not use a turbine to generate electricity. Solar photovoltaic systems have Solar photovoltaic cells that convert sunlight directly into electricity.
So we can conclude that sunlight energy source does not use a turbine in order to generate electricity.
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Pls help meee!!!!!!!!!!!!!
Answer: I had to get help with this one, but I believe the answer is Tyler.
The cloud cover is average and the total cover for Tyler is 60%
While the cover for Euless is 70%
And the pressure for Tyler is higher too.
What are some environmental advantages of building green?