Which element's cycle depends on kinds of bacteria to keep the element available to other organisms?

A. carbon

B. hydrogen

C. nitrogen

D. phosphorus

Lymphocytes can attack and kill cells that have which of the following malfunctions? a. Lack of nutrients b. Lack of hemoglobin c. Divide uncontrollably d. Produce antibodies

If you could change anything about the circulatory system, what would you change? There can be multiple answers ...

The negative stain is used to the negative stain is used to determine cell size. visualize endospores. determine flagella arrangement. visualize the outer membrane. determine gram reaction.

12. Consider a population of 5000 garter snakes. Two hundred of those snakes split off from the population to a new habitat. When the original population dropped from 5000 to 4800, the allele frequencies of various genes changed.

Who found that plants are composed of cells

A solution has the same solute concentration as the cytoplasm and will not cause a net movement of fluid in or out of the cells, the solution is said to be

It is best to wait until the end of the experiment to record your observations, true or false?

What would happen to a eukaryotic cell if all it's mitochondria were destroyed?

A biological agent that cannot reproduce on its own is a/an

Scientists realized each person's DNA is different in 1985. True or False