Acidic solutions have a pH that is

~~less than 7.

~~more than 7.

less than 7.

 Long chains of amino acids are found in

~~proteins.

~~lipids.

proteins.

 female : XX::

~~male : YY

~~male : XY

male : XY

The stage of the cell cycle that occupies most of the cell's life is

~~G₁

~~G₂

G₁

 Which of the following is not an organic macromolecule?

~~lipid

~~ice

ice

During cytokinesis in the female, what divides unequally?

~~the cytoplasm

~~the ovary

the cytoplasm

Scientists usually design experiments

~~with a good idea of the expected experimental results.

~~in order to develop new laboratory tools.

with a good idea of the expected experimental results.

Refer to illustration 5. The process shown is

~~mitosis.

~~meiosis.

meiosis.

The synthesis (S) phase is characterized by

~~DNA replication.

~~the division of cytoplasm.

DNA replication.

The scientific study of heredity is called

~~genetics.

~~crossing-over.

genetics.

In what direction does energy flow?

~~sun→plants→meat eater→plant eater

~~sun→plants→plant eater→meat eater

sun→plants→plant eater→meat eater

Chlorophyll is green because

~~it absorbs green wavelengths of light.

~~it reflects green wavelengths of light.

it reflects green wavelengths of light.

Scientific hypotheses are most often tested by the process of

~~experimenting.

~~analyzing data.

experimenting.

A cell that requires a lot of energy might contain large numbers of of

~~chromosomes.

~~mitochondria.

mitochondria.

Unlike passive transport, active transport

~~requires energy.

~~moves substances down their concentration gradient.

requires energy.

Osmosis is a type of

~~passive transport.

~~active transport.

passive transport.

How many chromosomes are in the body cells of an organism that has a haploid number of 8?

~~16

~~4

16

Mitosis is the process by which

~~microtubules are assembled.

~~the nucleus is divided into two nuclei.

the nucleus is divided into two nuclei.

A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a

~~polar molecule.

~~nonpolar molecule.

polar molecule.

Which of the following organic molecules are classified as carbohydrates?

~~fatty acids

~~sugars

sugars

The diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human ovum is

~~23

~~92

23

The structure that regulates what enters and leaves the cell is the

~~cell membrane.

~~nuclear membrane.

cell membrane.

Since the allele for colorblindness is located on the X chromosome, colorblindness

~~occurs only in adults.

~~is sex-linked.

is sex-linked.

The total amount of ATP that a cell gains for each glucose molecule depends on the presence of

~~carbon dioxide.

~~oxygen.

oxygen.

A microscope with a 4x objective lens and a 10x ocular lens produces a total magnification of

~~400x.

~~40x.

40x.

The "father" of genetics was

-- A. Knight

-- Gregor Mendel

Gregor Mendel

Light energy is converted to chemical energy

through the process of

-- photosynthesis

-- cellular respiration

Photosynthesis

Only eukaryotic cells have

-- DNA

-- membrane-bound organelles

membrane-bound organelles

Fermentation enables glycolysis to continue under

-- anaerobic conditions

-- aerobic conditions

anaerobic conditions

Which of the following is characteristic of all living things?

-- reproduction

-- metabolism

-- all of the above

All of the above

Polysaccharides are

-- lipids

-- carbohydrates

Carbohydrates

When a phosphate group is removed from

an ATP molecule

-- a substantial amount of energy is released

-- energy is stored

A substantial amount of energy is released

The diffusion of water into or out of a cell is called

-- endocytosis

-- osmosis

Osmosis

Which of the following is an example of a prokaryotic cell?

-- bacterium

-- virus

Bacterium

In humans, gametes contain

 -- 45 autosomes and 1 sex chromosome

-- 22 autosomes and 1 sex chromosomes

22 autosomes and 1 sex chromosomes

Heterotrophs are organism that

-- produce food from inorganic molecules or sunlight

-- must consume other organisms to get energy

Must consume other organisms to get energy

If a characteristic is sex-linked, it

-- occurs most commonly in males

-- can never occur in females

Occurs most commonly in males

Energy released from ATP

-- contains five phosphate groups

-- drives most of a cell's activities

Drives most of a cell's activities

The organelles associated with plant

photosynthesis are the

-- chloroplasts

-- mitochondria

Chloroplasts

Refer to illustration 6

Which of the following correctly indicates the order

in which these events occur?

-- B,A,C,D

-- C,B,A,D

C,B,A,D

In a cell, proteins are made on the

-- cell membrane

-- ribosomes

Ribosomes

The unknown genotype of an individual with a

dominant phenotype can be determined using

--a test cross

-- a dihybrid cross

A test cross

A diagram in which several generations of a family and the occurrence of certain genetic characteristics are shown is called a 

-- pedigree

-- Punnett square

Pedigree

How are chloroplasts similar to mitochondria?

-- they can both use energy from the sunlight

-- they both contain their own DNA

They both contain their own DNA

An enzyme...

-- lowers the activation energy of a reaction

-- is not used up when catalyzing a reaction

-- All of the above

All of the above

Energy is required for a variety of life processes including

-- growth and reproduction

-- movement

-- all of the above

All of the above

The bond formed when two atoms share a pair 

of electrons is called a(n)

-- ionic bond

-- covalent bond

Covalent bond

Molecules that are too large to be moved across

a cell membrane can be removed from the cell by

-- endocytosis

-- exocytosis

Exocytosis

In humans, the male determines the sex of the

child because males have

-- one X and one Y chromosome

-- two Y chromosomes 

one X and one Y chromosome

Atoms are composed of

-- electrons

-- protons

-- neutrons

-- all of the above

All of the above