Unit 3 Part 1 Biology Test Review

Plant leaves have tiny pores. These pores help plants release water from their tissues into the

• lithosphere

• biosphere.

• hydrosphere.

• atmosphere.

How are the functions of a carbohydrate and a lipid similar?

• Both are a source of energy

• Both are replicated during meiosis

• Both lower the activation energy of reactions.

• Both dissolve nutrients in the digestive system.

The cuticle of a leaf acts as what type of macromolecule because of its waxy component?

• Carbohydrate

• Protein

• Nucleic Acid

• Lipid

Which enzyme acts first in response to the ingestion of a hamburger patty?

• amylase in the mouth

• pepsin in the stomach

• lipase in the small intestine

• trypsin in the small intestine

Which statement correctly compares aerobic and anaerobic respiration?

• Anaerobic respiration occurs in the presence of oxygen but aerobic respiration does not.

• Fermentation occurs during aerobic respiration but not during anaerobic respiration.

• Aerobic respiration produces 36 ATP, while anaerobic respiration produces only 2 ATP.

• Aerobic respiration produces 2 ATP, while anaerobic respiration produces 36 ATP.

Both the reactants and products of photosynthesis contain carbon (C), hydrogen (H), and oxygen (O), but the products contain greater energy than the reactants. How can the products of photosynthesis have greater energy than the reactants?

• because the particles in the products move faster than in the reactants

• because more energy is stored in the chemical bonds of the products than the reactants

• because after the products were exposed to sunlight their electrical charges increased

• because the reaction increased the masses of the nuclei in the products

Glucose molecules provide the chemical energy cells use to carry on life processes. Some energy is always lost when cells break down the glucose molecules. Which statement explains how energy is lost in this process?

• Some energy is changed back to glucose.

• Some energy is converted into mass.

• Some energy is converted into heat.

• Some energy is changed into ADP.

Plant cells are able to produce their own food. This process happens in which structure?

• cell wall

• chloroplast

• mitochondrion

• vacuole

A scientist discovers several new prokaryotic organisms near a deep seafloor vent. Which best describes the general characteristics of these organisms?

• colonial, autotrophic

• multicellular, autotrophic

• single-celled, autotrophic

• multicellular, heterotrophic

How does the cell membrane use the ATP produced by the cell’s mitochondria?

• to replace damaged phospholipids

• to produce receptors for hormones

• to move water into or out of the cell

• to transport ions against their concentration gradient