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Novay_Z [31]
3 years ago
8

Why were the scientists concerned about the glue used to reattach the barn swallows’ tails?

Biology
1 answer:
Darya [45]3 years ago
7 0

For anyone on k12 this was the correct answer.

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Someone help me answer these questions, I’ll give brainlyyyy :))
Gnesinka [82]
1. The organisms at lower trophic levels have more consumable energy which provides the whale with more energy that organisms at other trophic levels.
2. Agree
3. Depending on the food chain, organisms can be on multiple trophic levels. For example, lions can be both a tertiary and secondary consumer.
7 0
3 years ago
What type of bonds form between the nitrogenous bases? Why are these bonds important?
Bond [772]

Answer:

The bonds that are formed between nitrogenous bases are Hydrogen Bond.

Explanation:

When a hydrogen atom interract with an electronegative atom such oxygen,fluorine hydrogen bond forms,

              A single hydrogen bond is weak noncovalent bond but collectively they exerts  very strong interraction.

            Hydrogen bonding occurs between complementary base pair .For exam An adenine base forms 2 hydrogen bonds with thymine base whereas guanine forms 3 hydrogen bonds with cytosine base.

             The hydrogen bonding between complementary is very much important to stabilize the structure of DNA .

6 0
3 years ago
Which taste receptor are most concentrate at the back of the tongue
r-ruslan [8.4K]

Sour receptors occur primarily along the sides of the tongue and are stimulated mainly by acids. Salt receptors are most common in the tip and upper front portion of the tongue. They are stimulated mainly by inorganic salts. Bitter receptors are located toward the back of the tongue

hopefully this helps but i could be really wrong lol


7 0
3 years ago
How would a mistake in transcribing the DNA message affect your ability to catch the killer?
mel-nik [20]

Answer: When the DNA collected on the crime scene is being analysed in the forensic lab, the results will be inconclusive, because error in DNA transcription, particularly in mRNA encoding leads to inheritable phenotype change by reprogramming the transcriptional network, without changing the DNA. Transcription errors are brief with no long-term consequences. Due to mRNA being short-lived and the erroneous proteins are degraded. A decrease in transcription accuracy triggers cellular identity change.

Explanation: This is called epimutation, a heritable modification that results in the change of gene expression, but not the DNA sequence. Epimutation is not associated with DNA mutation, but is associated with the loss or gain of DNA methylation or other heritable changes of the chromatin.

6 0
3 years ago
Kristen cut her hand on a piece of glass. As the blood clots, how do white blood cells prevent bacteria on the glass from infect
VMariaS [17]
<span>They destroy pathogens that enter the wound. This obliteration of any pathogens is called phagocytosis. A white platelet ingesting infection creating microorganisms. White platelets can: ingest pathogens and devastate them. deliver antibodies to demolish specific pathogens.</span>
3 0
3 years ago
Read 2 more answers
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