Molecular Biology selected questions

Which three of the four main kinds of macromolecules are used by living things for emergy?

• proteins, lipids, nucleic acids

• proteins, carbohydrtes lipids

• carbhoydrates, lipids, nucleic and

• proteins, nucleic acids, carbohydrates

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Which of the following compounds are proteins?

• DNA and RNA

• glucose, cellulose

• waxes and cholesterol

• hemoglobin and collagen

Read the following four statements.

1. 1. Glucose and oxygen are the reactants.

2. 2. Glucose and oxygen are the products.

3. 3. Carbon dioxide and water are the reactants.

4. 4. Carbon dioxide and water are products.

Which statements summarize the process of cellular respiration?

• 2 and 4

• 1 and 3

• 2 and 3

• 1 and 4

Tags

NGSS.HS-LS1-7

Which best describes the relationships between cellular respiration and photosynthesis?

• Photosynthesis requires oxygen; cellular respiration requires carbon dioxide.

• Photosynthesis traps sunlight; cellular respiration traps ATP.

• Photosynthesis uses energy from sunlight to make food; cellular respiration uses food to release energy.

• Photosynthesis is used by plants to get energy from food; cellular respiration is used by animals to get energy from food.

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Which statement summarizes the relationship between photosynthesis and cellular respiration?

• Photosynthesis and cellular respiration have the same reactants but different products.

• The reactants of photosynthesis are the products of cellular respiration.

• Photosynthesis releases energy, and cellular respiration stores energy.

• Photosynthesis releases energy, and cellular respiration uses energy.

Tags

NGSS.HS-LS2-5

Which best describes the function of enzymes?

• to speed up chemical reactions in cells

• to produce cellular energy

• to produce proteins

• to speed up cell division

Which process uses ATP to move material through the plasma membrane against the concentration gradient?

• passive transport

• active transport

• facilitated diffusion

• osmosis

What are the products of photosynthesis?

• glucose and oxygen

• glucose and carbon dioxide

• glucose and water

• water, carbon dioxide, and energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

After strenuous exercise, the process of cellular respiration in muscle cells uses up much of the available oxygen. How does cellular respiration change at this point?

• Cellular respiration stops.

• Aerobic respiration begins.

• Anaerobic respiration begins.

• Cellular respiration starts producing oxygen.

Tags

NGSS.HS-LS2-3

Lactase is an enzyme that is involved in breaking down lactose, the sugar in milk. Which term best describes the role of lactase in the digestion of milk?

• substrate

• reactant

• product

• catalyst