MCAS Warm Up 4

When astronauts are in low-gravity environments, their bodies begin to release stored calcium. As a result, which of the following most likely occurs when an astronaut returns to Earth?

• The risk of inflamed tendons increases.

• The chance of breaking a bone increases.

• The stomach’s level of functioning decreases.

• The blood’s ability to carry oxygen decreases.

Before genetic information can be translated into a polypeptide (protein), the DNA must be transcribed into ?

• RNA

• DNA

• starch

• lipids

Gradual change in a species over time

• evolution
• artificial selection
• crossing over
• fossils

Organisms with the best traits are more likely to survive and produce more offspring. This is the theory of.....

• artificial selection
• biodiversity
• natural selection
• crossing over

The main source of energy for all life comes from ____.

• the Earth
• the moon
• the sun
• the food we eat/make

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Why do plants conduct photosynthesis?

• to make light
• to make ATP
• to make glucose
• to release carbon dioxide

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Before a cell can divide, what must happen?

• Nothing, it is always ready to divide
• The number of chromosomes must be cut in half
• The number of chromosomes must double
• The number of chromosomes must triple.

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When you start with 1 cell, at the end of mitosis, how many identical cells will you have?

• 1
• 2
• 3
• 4

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After meiosis is complete how many cells will there be?

• 1
• 2
• 3
• 4

After meiosis is complete, the new cells:

• are all identical
• are all different
• are half identical and half different
• are all stretched out

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