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Artyom0805 [142]
3 years ago
9

Please asap help i am not even sure if my ans is correct but help me out

Biology
2 answers:
lukranit [14]3 years ago
4 0
Step 2 should be sensory neurons send electrical signals to the brain

Step 3 brain learns information about the environment

Step 4 brain sends electrical signals to the muscles
kicyunya [14]3 years ago
3 0

Answer and Explanation:

Step 1:

Sound waves reach the bat's ears.

Step 2:

Sensory neurons send electrical signals to the brain.

Step 3:

Brain learns information about the environment.

Step 4:

Brain sends electrical signals to the muscles.

Step 5:

Bat flies away from the owl.

This is the correct way^

#teamtrees WAP (Water And Plant)

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Meselson and Stahl used density labeling of DNA to show that DNA replication occurs via a semiconservative mechanism. In their e
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Answer:

  • The organism previously used 15N for replication so all the DNA molecules were of 15N15N type. Then the organism is shifted to a medium where only 14N is available for replication.
  • According to semi conservative mode of replication, a newly synthesised DNA molecule consists of one new strand and one parental strand. So after the first round of replication, All the 15N strands will synthesise new DNA strands using 14N resulting into intermediate 15N14N DNA molecules. Hence, only one band would be observed (15N14N) above the original 15N15N band since 15N14N has lighter isotope too so it will be lighter than 15N15N molecules and will lie above it.
  • After second round of replication, 15N strand from 15N14N would synthesise another 14N strand. 14N strand from 15N14N molecules will also synthesise another 14N strand. So now, 50% of the DNA molecules will be of 15N14N intermediate type and 50% of them will be of 14N14N type.Two bands will be observed above the original 15N15N band. One band of 15N14N molecules will be right above it and other band of 14N14N molecules will be even higher because it is the lightest band since it has only the lighter isotope of nitrogen.
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3 years ago
Unlike T lymphocytes, B lymphocytes
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The correct answer is (c) discover antigens in body fluids.

B lymphocytes act as antigen presenting cells that recognizes and displays the antigen to the white blood cells. These cells process the antigens that are present in body fluids. Professional antigen presenting cells includes B-lymphocytes, macrophages, dendritic cells, etc.





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During replication, the function of the enzyme DNA polymerase is to
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Answer:

b. locate replication sites.

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During replication, the function of the enzyme DNA polymerase is to locate replication sites.

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Anyone wanna talk I’m bored
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In the Hershey-chase experiment, what happened to the bacteria that had been infected by viruses that had radioactive DNA, and t
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The bacteria infected with viruses that had radioactive DNA had become radioactive. The bacteria that had been infected with viruses marked with radioactive proteins were not radioactive.

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