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

Tags

NGSS.HS-LS2-3

Which amino acid sequence can be coded from the DNA sequence CAG TAG CGA?

• Valine - Isoleucine - Glycine

• Valine - Aspartic Acid - Alanine

• Valine - Isoleucine - Alanine

• Valine - Phenylalanine - Alanine

Tags

NGSS.HS-LS1-1

Which disease most likely occurs after excessive exposure to ultraviolet radiation?

• malaria

• asthma

• skin cancer

• polio

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

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman who does not have hitchhiker’s thumb marries a man who is heterozygous for hitchhiker’s thumb. What is the probable genotypic ratio of their children?

• 0% Hh : 100% hh

• 50% Hh : 50% hh

• 75% Hh : 25% hh

• 100% Hh : 0% hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

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

Tags

NGSS.HS-LS1-7

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

Tags

NGSS.HS-LS1-3