Cell Transport Exam Review Question Preview (ID: 39783)


Transport And Energy Flow. TEACHERS: click here for quick copy question ID numbers.

Which of the following will happen to a cell If the concentration of a sugar solution is lower outside the cell than inside the cell?
a) water will move into the cell
b) sugar will move into the cell
c) sugar will move out of the cell
d) water will move out of the cell

Which statement about diffusion is true?
a) energy is required for molecules to move across a membrane
b) Diffusion happens when molecules move from a low concentration to a high concentration
c) Diffusion happens when molecules move from a high concentration to a low concentration
d) During diffusion, molecules move only in one direction.

A red blood cell is placed in an isotonic solution. What will most likely happen to the blood cell?
a) Water will exit the cell, making it shrink
b) Water will enter the cell, causing it to swell
c) Water will stop moving in and out of the cell.
d) Water will exit and enter the cell at a constant rate.

Cells sometimes use passive transport to move molecules across their membranes. The rate at which a cell engages in passive transport is determined by
a) the number of vacuoles that the cell contains.
b) the amount of energy that the cell generates
c) the composition of the cell membrane.
d) the size of the cell's chloroplasts.

Diffusion does not require the cell to expend ATP. Therefore, diffusion is considered a type of
a) endocytosis.
b) exocytosis
c) active transport
d) passive transport

Although a fetus is relatively protected in its mother's womb, a number of different toxins can harm the fetus. These include lead, mercury, glycol ethers, and many other substances. How do toxins usually reach the developing fetus?
a) by diffusion across placental membranes
b) by recombination of genes from the fetus and mother
c) by transfer of blood from the mother to the fetus
d) by active transport from the ovary

Why could drinking saltwater instead of freshwater be dangerous to humans?
a) Saltwater is hypotonic relative to human tissue.
b) Saltwater is isotonic relative to human tissue
c) Saltwater is hypertonic relative to human tissue.
d) Saltwater is too acidic.

Which of the following is essential for diffusion to occur?
a) a concentration gradient
b) a permeable membrane
c) a source of energy
d) a protein substance

The bonding of oxygen to red blood cells is important to the body because it enables the body to
a) absorb nutrients from food
b) make energy from light.
c) maintain a constant temperature
d) perform aerobic respiration in cells.

Which of the following actions is responsible for the production of energy-rich ATP molecules?
a) the recycling of light energy
b) cellular respiration
c) protein synthesis
d) the division of starch molecules

What are the reactants in the equation for cellular respiration?
a) oxygen and lactic acid
b) carbon dioxide and water
c) glucose and oxygen
d) water and glucose

The energy required to lift an object is supplied by ATP derived from the breakdown of molecules of
a) glutamate
b) glycerol
c) glycolosis
d) glucose

To which class of nutrients do molecules of fats and oils belong?
a) lipids
b) proteins
c) carboydrates
d) nucleic acids

Carbohydrates are usually composed of sequences of carbon (C), hydrogen (H), and oxygen (O). Proteins differ from carbohydrates in that most proteins contain
a) potassium (K)
b) helium (He)
c) iron (Fe)
d) nitrogen (N)

Which biomolecule does NOT have a carbon-nitrogen bond?
a) protein
b) peptide
c) nucleic acid
d) carbohydrate

Which class of molecules are used by the body to synthesize proteins?
a) carbohydrates
b) amino acids
c) lipids
d) minerals

Which of these substances is matched with its correct organic group?
a) monosaccharides- lipids
b) enzymes- proteins
c) glycerol- carbohydrates
d) nucleotides- proteins

What is known as the net movement of any type of molecule from a region of higher concentration to a region of lower concentration?
a) osmosis
b) diffusion
c) endocytosis
d) exocytosis

Which type of cell uses the greatest amount of the ATP it produces to maintain the proper sodium and potassium levels in its cytoplasm?
a) nerve cell
b) blood cell
c) muscle cell
d) sperm cell

Which inorganic compound is the most important for living things?
a) meat
b) milk
c) salt
d) water

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