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adell [148]
3 years ago
11

During Fight or Flight response does the perception of light increase or decrease?

Biology
1 answer:
cestrela7 [59]3 years ago
8 0

Answer:

Increase

Explanation:

It helps you to se better.

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You briefly expose bacteria undergoing DNA replication to radioactively labeled nucleotides. When you centrifuge the DNA isolate
noname [10]

Answer:

leading strands and Okazaki fragments

5 0
3 years ago
Describe the PCR technique; include details about the components required in a PCR reaction and the stages of each cycle. Make s
Alik [6]

Answer:

Denaturing – when the double-stranded template DNA is heated to separate it into two single strands. Annealing – when the temperature is lowered to enable the DNA primers to attach to the template DNA. Extending – when the temperature is raised and the new strand of DNA is made by the Taq polymerase enzyme

Explanation:

<em>Your </em><em>well</em><em> </em><em>wisher</em><em> </em><em>:-)</em>

4 0
3 years ago
What mechanisms ensure that blood continuously flows throughout our body?
Natalka [10]
Systemic circulation is the circulation of blood through<span> the arteries, capillaries, and veins of the general system.

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5 0
3 years ago
how does codominance at the molecular level help to explain why evolutionary processes haven't resulted in the elimination fo th
Yanka [14]

Answer:

here.

Explanation:

Due to the prevalence of malaria in Africa, the allele for sickle cell anemia (HbS) provides a selective advantage. That's why it remains in the population.

A normal African person (HbAHbA), with normal haemoglobin, will not die of anemia, but will die of malaria.

An African person with sickle cell anemia (HbSHbS), with abnormal haemoglobin, will die of anemia.

A heterozygous African person (HbAHbS), with half of his red blood cells (RBCs) being normal and the other half being sickle-shaped, will neither die from anemia, nor malaria since the plasmodium will be incapable of completing its life cycle in the abnormal RBCs.

Thus heterozygous African people will grow, reproduce and pass on the HbS allele to the next generations.

8 0
3 years ago
Rocks , soil trees water air and life .How do all the parts affect each other? Give some
IrinaVladis [17]

Explanation:

Answer:

For the complete encyclopedic entry with media resources, visit: http://www.nationalgeographic.org/encyclopedia/weathering/

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.

Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion. Together, these processes carved landmarks such as the Grand Canyon, in the U.S. state of Arizona. This massive canyon is 446 kilometers (277 miles) long, as much as 29 kilometers (18 miles) wide, and 1,600 meters (1 mile) deep.

Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how vulnerable a rock is to weathering. Rocks, such as lavas, that are quickly buried beneath other rocks are less vulnerable to weathering and erosion than rocks that are exposed to agents such as wind and water.

For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain.

4 0
3 years ago
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