When the alleles of a gene pair are identical they are said to be: a. homozygous b. heterozygous c. recessive d. dominant

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane

Which of the following molecules can be broken down into simple sugars? a. nucleic acid b. protein c. lipid d. carbohydrate