1 of 25
All of the following are
characteristics of living things except

growth.

production of diseases.

reproduction.

metabolism .

reaction to the external
environment.

Question
2 of 25
One important function of
carbohydrates is that they

form enzymes.

are structural molecules.

repel water.

store energy.

hold genetic information.

Question
3 of 25
Which of the following organic
molecules store energy, provide insulation, and assist in buoyancy?

Proteins

Carbohydrates

Lipids

Nucleic acids

Amino acids

Question
4 of 25
One of the products of
photosynthesis is

water.

energy released into the
surrounding environment.

oxygen.

carbon dioxide.

energy contained in the water
molecules.

Question
5 of 25
During the process of cellular
respiration,

energy is released from organic
molecules to do work in the cell

carbon dioxide and water form
sugars

solar energy is transformed into
chemical energy

oxygen and carbon dioxide are
produced

sunlight is used to create energy

Question
6 of 25
Which of the following is not true
of a cell?

It is the basic structural unit of
life.

Mitochondria are found in both
plant and animal cells.

Cell walls are found in all plant
and animal cells.

All organisms are made of one or
more cells.

The membrane-bound structures
within most cells are called organelles.

Question
7 of 25
Which of the following is classified
as a prokaryotic cell?

Bacteria

Fungi

Protist

Animal

Plant

Question
8 of 25
Which of the following shows the
correct level of organization in order of increasing complexity?

Molecule, cell, organelle,
individual, community

Organelle, tissue, organ,
community, population

Ecosystem, individual, organ, cell

Molecule, atom, cell, organ
system, ecosystem

Atom, molecule, organ, population,
ecosystem

Question
9 of 25
A group of organisms of different
species living together on a rocky beach is an example of which of the
following?

Population

Community

Individual

Ecosystem

Colony

Question
10 of 25
The ecosystem best encompasses which
of the following?

All living organisms living in one
area

Populations in one area but not
the physical environment

The community or communities but
not the physical environment

The community or communities and
the physical environment

Populations and communities living
in one area

Question
11 of 25
The cell membrane is said to be
“selectively permeable” because it

allows only some substances to
move through.

allows all substances to enter the
cell.

allows all substances to leave the
cell.

allows only the smallest molecules
to enter the cell.

allows only water and salts to
enter the cell.

Question
12 of 25
Marine organisms whose internal salt
concentration varies with that of their environment are examples of which of
the following?

Osmoregulators

Isotonic organisms

Poikilotherms

Osmoconformers

Homeotherms

Question
13 of 25
All of the following are examples of
asexual reproduction except

fission.

fertilization.

plants sending out
“runners.”

budding.

cell division.

Question
14 of 25
Which of the following shows the
correct taxonomic levels from most inclusive to least inclusive?

Kingdom, phylum, order, species,
genus

Kingdom, phylum, family, genus,
species

Kingdom, family, order, phylum,
genus

Kingdom, order, phylum, genus,
species

Order, family, phylum, genus,
species

Question
15 of 25
Cellular respiration occurs in the

mitochondria.

endoplasmic reticulum.

Golgi complex.

nucleus.

centrioles.

Question
16 of 25
The end product of cellular
respiration is

oxygen.

nitrogen.

ATP.

amino acids.

glucose.

Question
17 of 25
The events of evolution best explain

how organisms obtain energy from
organic molecules.

why people use a three domain
system of classification.

how life originated on Earth.

the growth and development of
individual organisms.

why so many organisms have
characteristics in common.

Question
18 of 25
Two single-cell organisms are placed
in a 3.5% salt solution. Cell A enlarges slightly and then stops. Cell B
enlarges and finally ruptures. Which of the following was true at the time the
cells were placed in the saltwater?

Cell A was hypertonic to the
solution and cell B was hypotonic.

Cell A was hypotonic to the
solution and cell B was hypertonic.

Cells A and B were isotonic in
relation to each other.

Cell B was hypertonic in relation
to cell A.

Cell A was hypertonic in relation
to cell B.

Question
19 of 25
Natural selection is best shown by
_________________.

new species being formed by
genetic engineering

breeders selecting animals with
desirable characteristics to mate together

individuals with adaptive traits
surviving and leaving offspring

smaller organisms in any habitat
dying out when the environment changes

osmoconformers surviving in
seawater of constant temperature and salinity

Question
20 of 25
Which kingdom of eukaryotic
organisms is multicellular and capture its food?

Fungi

Animals

Plants

Protists

Bacteria

Question
21 of 25
In order to transport materials in
and out of an organism efficiently, the best situation would be to have a
_____________________.

small surface area to volume ratio

a 1:1 ratio of surface area to
volume

large surface area to volume ratio

inside volume that is
significantly larger than the surface area of the membrane

reduced surface area of the
membrane in comparison to the volume of the cell

Question
22 of 25
______________ and _____________
were long ago free-living cells that joined with other cells in a symbiotic
association.

Chloroplasts and the nucleus

Mitochondria and ribosomes

Chloroplasts and Golgi bodies

Mitochondria and chloroplasts

Ribosomes and the Golgi body

Question
23 of 25
A unicellular freshwater organism
suddenly is placed in a marine environment. It would be expected that the cell
would __________________.

increase in size

decrease in size

stay the same size

change size from smaller to larger
and back to smaller

neither increase or decrease in
size

Question
24 of 25
A freshwater cell placed into a
marine environment would initially be ________________ in relation to saltwater.

hypotonic

hypertonic

isotonic

hypoxic

anoxic

Question
25 of 25
Sea turtles maintain constant
water-salt balance by ________________________________.

moving back and forth between
fresh and salt water

drinking sea water and retaining
as much salt as possible

excreting water throughout the day

secreting salts through glands
near the eyes

retaining both salt and water in
their kidneys