RC 1 Part 2 New Nguyen

RC 1 Part 2

By Ms. Nguyen

Multiple Choice

Scientists insert a gene that produces insulin into bacteria. The procedure uses genetic material and a molecule that speeds up the chemical reaction.

Which statement BEST classifies the biomolecules involved?

• Proteins carry genetic information and carbohydrates catalyze reactions.

• Nucleic acids carry genetic information and proteins catalyze reactions.

• Lipids carry genetic information and nucleic acids catalyze reactions.

• Carbohydrates carry genetic information and lipids catalyze reactions.

Multiple Choice

A cell membrane is primarily made of phospholipids that control what enters and leaves the cell.

Which biomolecule category do phospholipids belong to?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Multiple Choice

Muscle contraction depends on actin and myosin interacting inside muscle cells.

Which biomolecule category includes actin and myosin?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Multiple Choice

If apoptosis does not occur in damaged cells, the MOST likely result is —

• tissue repair

• tumor formation

• reduced metabolism

• normal growth

Multiple Choice

Which property is found only in cancer cells?

• Presence of mitochondria

• Regulated gene expression

• Unregulated cell division

• Response to outside signals

Multiple Choice

Uncontrolled production of cyclins would MOST likely result in —

• DNA repair

• slowed cell growth

• tumor formation

• cell death

Multiple Choice

Which characteristic distinguishes viruses from both prokaryotic and eukaryotic cells?

• Require a host to reproduce

• Use energy

• Contain genetic material

• Have a cell membrane

Multiple Choice

A scientist examines an unknown sample and observes the following:

No nucleus

No ribosomes

Cannot reproduce without a host

Which conclusion is MOST likely correct?

• The sample is a eukaryotic cell.

• The sample is a prokaryotic cell.

• The sample is a virus.

• The sample is a plant cell.

Multiple Choice

Which statement BEST describes the function of an enzyme?

• Raises the temperature of the reaction

• Speeds up the rate of a chemical reaction

• Changes the type of product formed

• Adds more substrate to the reaction

Multiple Choice

Enzymes are classified as which type of biomolecule?

• Carbohydrate

• Nucleic acid

• Protein

• Lipid

Multiple Choice

An enzyme becomes inactive after being exposed to high heat. What MOST likely occurred?

• The enzyme was used up

• The substrate disappeared

• The enzyme was denatured

• The product was changed