The vultures do not have hair on their heads? explain

Answers

Answer 1

Answer: They have bald heads and usually don't have feathers on their necks, either. Bare skin in those areas helps them stay cleaner why they stick their head into a carcass to feed. With no feathers to trap gunk on a vulture's head, meat and blood just dry and flake off. Vultures are able to eat rotting food because they have a strong immune system. And they play a super-important role in our environment as a clean-up crew!

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The discovery of mitochondrial DNA (mtDNA) had no effect on which area of scientific investigation?
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Tina conducted an experiment to test her hypothesis. Her hypothesis was that by crushing aspirin and putting it into potting soil increases the growth rate of tomato plants. The results of the experiment show that there was no significant difference in the growth rates between the control and the experimental groups. What should Tina do with the results of this experiment?
The leaf surface area is just as, if not more, important than the intensity of light in photosynthesis.a. True b. False

Stage 1 of delivery averages about 8 hours but may be longer for first-time mothers.a. True
b. False

Answers

I think it might be false

Analyze the following statements. Which of them is correct with respect to the RNA transcript formed by means of transcription?a.The RNA transcript is an exact replica of the DNA from which it is transcribed. It has the same sequence as that of its parent DNA strand.
b. The RNA transcript is complimentary to the DNA from which it is transcribed. Instead of thymine, it has uracil, which complements the adenine of DNA.
c. The RNA transcript is an exact replica of the DNA from which it is transcribed. Instead of adenine, it has uracil, which complements the thymine of DNA.

Answers

The correct answer is B. During transcritption, RNA polymerase synthesizes a complementary RNA transcript, from the DNA. RNA lacks thymine, and possess uracil instead of it. The RNA polymerase makes this antiarallel primary transcript, complementary to the DNA

Answer: The correct answer is -

b. The RNA transcript is complimentary to the DNA from which it is transcribed. Instead of thymine, it has uracil, which complements the adenine of DNA.

Explanation:

Transcription is a process of formation of mRNA (messenger RNA) from DNA. During this process, RNA polymerase enzyme uses the template DNA strand and adds the nucleotides (in mRNA in the 5' to 3' direction) complimentary to this. It adds uracil in the mRNA transcript for adenine in rhe DNA template. Similarly, for guanine in the DNA, cytosine is added.

Thus, option b) is the right answer.

How does meiosis help to maintain the continuation of a species?

Answers

Meiosis is the reproduction of cells that don't exchange DNA, its important because if you have a cut on your hand, you wouldn't want mitosis to go through or you could end up with a stomach sell on your hand. Meiosis reproduces the same type of cell, for example somatic cells(human cells).

Meiosis provides genetic diversity. Mitosis is used in most cell reproduction (which is fine when they do the same job). Meiosis is like sexual reproduction for cells, with the acceptation that there is only one parent cell.

How are populations limited in ecosystems?

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a population is a group of living organisms of the same species, havethe same features etc etc, living together in the same habitat.

Describe the difference in the pH values between the contents of the stomach and duodenum

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The pH within the stomach is much more acidic than the pH within the duodenum as the duodenum contains an alkaline solution to neutralise the acidity

Which of these properties changes if the size of an object changes?a. density
b. melting point
c. solubility
d. mass

Answers

im guessing c=solubilty because

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