Where does the exchange of materials in and out of a cell take place?

A.

cell membrane

B.

nucleus

C.

chloroplast

D.

chromosome

How is there 50 fish in the sea and not 2200000?

What would happen if you release a crayfish into a non native environment?

Explain why some traits cannot be easily changed even though they are heritable

What is a light year? the time it takes for light to reach Earth from the Sun the distance light travels in one vear the time it takes for light to travel around the Sun the distance light can travel in a year before it burns out

What phase of the cell cycle comes before prophase stage of mitosis

How would the lack of water affect cellular respiration?

Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.

A group of scientists decided to post their research results on the Internet instead of publishing in a scientific journal. What part of the scientific process have they skipped and why does it matter?

How does the structure of DNA allow it to complete the process of replication?

Which of the four types of organic compounds serve as an energy source for cells?