Biology Answers

If lacI is binding the lacO, lacZ will be transcribed

Would it make a difference in the environment if only small businesses were to implement sustainable development? Why or why not?

The table shows the concentration of three different ions inside the cells in a plant root and

in the water in the soil

Ion Concentration in plant root cells /m3 Concentration in soil water /m3

A 0.5 0.5

B 1.0 0.4

C 0.6 0.8

a. Which ion has been moved into the root hair by active transport? Explain your answer. [2]

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b. Which ion has moved into the root hair by diffusion? Explain your answer. [2]

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c. Which ion has been moved out of the root hair by active transport? Explain your answer.

energy drinks have become increasing popular. some of these contrain large amounts of caffeine, which is known to increase heart rates in most individuals. this affect on the heart rate can be dangerous because it can lead to

which life history patterns in some rotifers are adapted to living in small bodies of water

Some animal distributions are particular to certain continents. Explain why you think that is so?

The process of cell drinking is called

1. The distribution of covering epithelium?

2. The difference between exocrine and endocrine glands?

3. Which specializations could be seen at the free, basal, and lateral surfaces of epithelia？

4. Please preview general connective tissue.