Structure & Function of Living Things

The _____________ holds the DNA, and controls the functions of eukaryotic cells.

• Nucleus

• Nuclear Membrane

• Mitochondria

• Chloroplast

A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which has occurred?

• The swollen gums have absorbed the saltwater solution

• The saltwater solution lowers the temperature in the gums

• The salt in the solution has moved against the concentration gradient

• The water in the gums has moved from a high to a low concentration of water

Which organism is most likely to use anaerobic respiration?

• bird

• moss

• tree

• yeast

RNA and DNA are which type of organic compound?

• carbohydrate

• lipid

• nucleic acid

• protein

Which is an example of osmosis?

• potassium ions moving in and out of an animal cell

• carbon dioxide moving into the leaf cells of a plant

• oxygen moving into the bloodstream from the lungs

• water moving into the root cells of a plant

A scientist treats a cell with a chemical that destroys the ribosomes. As a result, which cell process will be stopped?

• osmosis

• photosynthesis

• protein synthesis

• respiration

What will most likely be the result if all of the mitochondria are removed from a plant cell?

• It will be unable to carry out respiration

• It will lose water through osmosis

• It will break down the ribosomes in the cell

• It will be unable to photosynthesize

During strenuous exercise, body temperature increases. The body responds to the increase in temperature by sweating, which helps to reduce the body temperature. Which is demonstrated in this situation?

• excretion

• metabolism

• homeostasis

• synthesis

What is the function of autotrophs in the carbon cycle?

• To use oxygen to produce glucose

• To take in excess water

• To use carbon dioxide to produce glucose

• To feed herbivores

A strand of DNA has these bases:

AGC CAT GTA TAC

What is the complementary DNA strand?

• ACG GAT CTA TAG

• TCG GTA CAT ATG

• TGC CTA GAT ATC

• UCG CUA CAU AUG