Hemoglobin is

a. a digestive enzyme.
b. a tiny nutrient carried in capillaries.
c. an oxygen-carrying pigment in blood.
d. part of the vertebrate nervous system.

Order the steps of protein synthesis. amino acids are lined up in a sequence. rna is modified into mrna. dna is transcribed. a ribosome binds to mrna. chemical bonds are formed and a protein is produced.

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

How does a gymnosperm prevent itself from pollinating the same tree