Chemistry of Life Introduction

1.02Chemistry of Life and 1.03 Earth's Early Origins

Multiple Choice

How many covalent bonds can carbon form with other atoms

• 1

• 2

• 4

• 8

Multiple Choice

What type of biological molecule is an

enzyme?

• hormone

• nucleic acid

• protein

• lipid

Multiple Choice

What are fats, oils, and waxes composed of?

• lipids

• nucleotides

• polypeptides

• sugars

Multiple Choice

What are the monomers that make up

proteins?

• amino acids

• fatty acids

• glycerols

• nucleotides

Multiple Choice

Which biological molecule transports

substances between cells?

• carbohydrate

• lipid

• nucleic acid

• protein

Multiple Choice

Which polysaccharide stores energy in muscle

and liver tissue?

• gluten

• glycogen

• starch

• sucrolose

Multiple Choice

What is the function of this biological macromolecule?

• communicate signals

  between cells

• produce vitamins

  and hormones

• provide support

  and protection

• store and transmit

  genetic information

Multiple Choice

Which is a characteristic of all lipids?

• They are saturated triglycerides

• They do not dissolve in water.

• They are liquid at room temperature

• A.They store less energy than carbohydrates.

Multiple Choice

At one time people believed that mold growing

on a piece of cheese was created by the

cheese. This is the idea of __________.

• biogenesis

• transgenesis

• primordial generation

• spontaneous generation

Multiple Choice

According to the endosymbiont theory, what may

have happened to a prokaryotic cell that entered

a host cell?

• It was digested by the host cell

• It became an organelle in the host cell.

• It became a harmful parasite in the host cell.

• It was removed from the host cell by exocytosis.

Multiple Choice

In this experiment using water and the gases to simulate Earth’s early atmosphere, which was not one of the final products?

• amino acids

• nucleotides

• RNA molecules

• sugar molecules

Multiple Choice

Why do scientists think that archea are the closest relatives to Earth’s first cells?

• They are eukaryotes.

• They contain DNA.

• They carry out photosynthesis.

• They live in extreme environments.