Bio Ch 2 review

In groups of three or four, you will decide on the correct answer for

points.

Which of the following is the basic unit of matter?

A. Cell

B. Atom

C. Electron

D. Neutron

If an atom has 3 protons and 4 neutrons, its atomic number is __________.

A. 1

B. 3

C. 4

D. 7

Fluorine is an atom that has an atomic # of 9 and an atomic mass of 19. How many neutrons does this atom have?

A. 9

B. 10

C. 19

D. 28

A pure substance made of just one kind of atom is called a(an) ________________.

element

What particle is not included in the nucleus of an atom?

A. Proton

B. Electron

C. Neutron

D. All of the above

What is the most abundant compound in most living things?

A. carbon dioxide

B. hydrochloric acid

C. water

D. iodine

In a covalent bond, electrons are ____________________.

Shared

Monosaccharides and polysaccharides are

A. Carbohydrates

B. lipids

C. nucleic acids

D. proteins

A ____________ is a substance with two or more elements in a definite proportion.

A. nucleic acid

B. compound

C. ionic bond

D. suspension

When a molecule has an uneven distribution of electrons is called ______________.

polar

____________ isotopes are used to determine the age of rocks and fossils, treat cancer, and trace the movements of substances in organisms

Radioactive

The organic molecules that provide organisms with energy are

A. carbohydrates

B. lipids

C. nucleic acids

D. proteins

A monosaccharide would make the indicator Benedict’s solution this color: __________________.

orange

The electrons in the outermost cloud or orbital of an atom are known as ___________ electrons.

valence

Fats, oils and waxes are example of

A. carbohydrates

B. lipids

C. nucleic acids

D. proteins

What is an evenly distributed mixture of two or more substances

A. suspension

B. indicator

C. catalyst

D. solution

Iodine is an indicator that turns black in the presence of a(an) ________________.

Starch or polysaccharide

A base has a pH __________________ than 7.

More/greater

____________________ are the monomers of carbohydrates.

A. amino acids

B. polymers

C. nucleotides

D. monosaccharides

When making a solution of Country Time lemonade, the lemonade mix is the ___________________.

solute

Which of the following is a function of proteins?

A. fight disease

B. energy storage

C. make up cell membranes

D. insulation

The compounds that appear on the right of a chemical equation are called the ________________.

products

A substance that increases the rate of chemical reactions is known as a(n)

A. lipid

B. catalyst

C. indicator

D. suspension

A protein that is a biological catalyst is a(an)

A. steroid

B. Iodine

C. enzyme

D. substrate

The process of putting monomers together into polymers is known as _________________.

polymerization

Two elements that have the same number of protons but different number of neutrons are

A. Isotopes

B. Ions

C. Solutes

D. suspensions

A reaction that requires energy to occur is known as ________________________.

endothermic

The biological molecule that stores genetic information are known as

A. carbohydrates

B. lipids

C. nucleic acids

D. proteins

What measures the concentration of hydrogen ions in a solution? _____________________

pH scale

Organic molecules that turn Biuret reagent violet are

A. carbohydrates

B. lipids

C. nucleic acids

D. proteins

The active site is where an enzyme and the _____________________ bind together.

A. isotope

B. substrate

C. lipid

D. proteins

____________________ are the monomers of proteins.

A. amino acids

B. polymers

C. nucleotides

D. monosaccharides