Biology Goal

Waxes create a waterproof layer on the outside of some living organisms. To which group of organic molecules do waxes belong?

• Carbohydrates

• Lipids

• Nucleic acids

• Proteins

A student noticed that the freshwater plant, Elodea, produced bubbles when placed in direct light. What could the students most likely conclude?

• Bubbles of carbon dioxide were produced as a result of photosynthesis.

• Bubbles of oxygen were produced as a result of photosynthesis.

• Bubble of carbon dioxide were produced as a result of cellular respiration.

• Bubbles of oxygen were produced as a result of cellular respiration.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Salivary amylase is an enzyme in humans that breaks down starches. What substance would humans have difficulty digesting without this enzyme?

• Lipids

• Nucleic acids

• Proteins

• Carbohydrates

Which best explains why the rate of a biochemical reaction decreases at high temperatures?

• The activation energy increases.

• The shape of the enzyme changes.

• The enzyme-substrate complex forms.

• The bonds between substrates are broken.

A contractile vacuole helps protists eliminate excess liquid. This is a “pumping” process which reduces pressure inside the cell and prevents the cell from bursting. What is most likely the source of energy for this process?

• DNA

• Lipids

• ATP

• Ribosomes

Which word equation best represents the process of cellular respiration?

• Carbon dioxide + glucose → oxygen + water

• Carbon dioxide + water → glucose + oxygen

• Glucose + oxygen → carbon dioxide + water

• Oxygen + water → carbon dioxide + glucose

Tags

NGSS.HS-LS1-7

How does the body of a runner keep up with the demand for energy when cellular oxygen levels are low?

• Through energy production in the mitochondria

• Through aerobic respiration in the plasma membrane

• Through ATP produced directly from sunlight

• Through anaerobic respiration in the cytoplasm

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

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

What type of organic molecules are enzymes?

• proteins

• carbohydrates

• lipids

• nucleic acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6