Biology EOC review 2

Which best summarizes the role of DNA in the production of proteins?

• DNA moves to the cytoplasm to build proteins

• DNA transports amino acids to the ribosomes to make proteins

• DNA contains the instructions used to make proteins

• DNA breaks hydrogen bonds between amino acids

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

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

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

• Bubbles of carbon dioxide were produced as a result of cellular respiration

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

What determines the function of a specialized cell?

• the type of RNA in the cell

• the number of ribosomes in the cell

• the number of chromosomes in the cell

• the active genes in the cell

This diagram shows a red blood cell in a beaker that contains a solution with a higher salt concentration than that inside the red blood cell. What will happen to the red blood cell in this environment?

• The size of the red blood cell will remain constant.

• The red blood cell will swell at first then shrink.

• The red blood cell will swell from absorbing salt molecules.

• The red blood cell will shrink from losing water molecules.

During which phase of the cell cycle does most cell growth occur?

• cytokinesis

• interphase

• prophase

• mitosis

Why must DNA replication have to occur before a cell can divide by mitosis?

• to maintain the same number of chromosomes in the daughter cells as in the parent cell

• to cause one of the cells produced to have double then number of chromosomes as the parent cell

• to allow crossing over to occur in each of the cells produced

• to cause all of the cells produced to have half the number of chromosomes as the parent cell

A section of DNA has these bases:

TAG CAG TAC

Which mRNA sequence is produced from this DNA section?

• ATC GTC ATG

• AUC GUC AUG

• AUG CUG AUC

• UTC GTC UTG

What is the difference between the DNA of a dog and the DNA of a fly?

• the type of sugar building blocks

• the sequence of nucleotides

• the strength of hydrogen bonds

• the strength of covalent bonds

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

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

• through the production in the mitochondria

• through the aerobic respiration in the plasma membrane

• through the ATP produced directly from sunlight

• through anaerobic respiration in the cytoplasm