The purple cell in the diagram is a choanocyte from the sponge. It is involved in

A. sponge feeding.

B. sponge reproduction.

C. waste removal.

D. all of the above

You step on something in the yard resulting in a puncture wound that does not bleed freely. antigens from any microbes that entered the wound will most likely end up in the

In which of the following processes will substance move from areas of lower concentration to areas of higher concentration?

Which of the following is a mixture? O A. Ice cube O B. Cotton ball O O C. Sugar D. Candy bar

With regard to enzymes, what can be said to be the relationship between the substrate and the active site?

Suppose that enzyme X catalyzes a reaction that involves the breakdown of a molecule. The product of this reaction is an amino acid. What molecule is the enzyme breaking down?

Instinct is a changing, biologically inherited behavior pattern. T or F?

In which section of the nephron does the filtrate have a higher osmolarity than the blood when it enters and lower osmolarity than the blood when it leaves?

A population is best represented by

Carolyn suffers from the excessive secretion of insulin in the bloodstream. the medical term for this condition is

Some biological hazards (such as bacteria, viruses, parasites, and fungi) are undetectable by sight, smell or taste and can potentially cause an illness. What are these biological hazards called?