Low temperatures may cause photosyntheisis to occur

more slowly

or

more quickly

more slowly

Which of the following describes a population?

four species of fish living in a pond

or

dogwood trees in Middletown, Connecticut

dogwood trees in Middletown, Connecticut

The relationship between a clown fish and a sea

anemone is known as

commensalism

or

parasitism

commensalism

When two species compete, the niche that each species

ultimately occupies is its...

realized niche

or

competitive niche

realized niche

Most of the energy used by life on Earth comes from...

the rotation of the Earth

or

the sun

the sun

Many autotrophs obtain the energy they need for

metabolism through...

photosynthesis

or

fermentation

photosynthesis

Mitosis is the process by which...

the nucleus is divided into two nuclei

or

microtubules are assembled

the nucleus is divided into two nuclei

Heterotrophs are organisms that...

must consume other organisms to get energy

or

none of the above

must consume other organisms to get energy

Which of the following does NOT provide new 

genetic combinations?

crossing-over

or

cytokinesis

cytokinesis

A relationship between a producer and consumer

is best illustrated by a

zebra eating grass

or

snake eating a bird

zebra eating grass

Taxonomy is...

the evolutionary history of a species

or

the science of naming and classifying organisms

the science of naming and classifying organisms

The process by which a species becomes better

suited to its environment is known as

adaptation

or

variation

adaptation

The scientists credited with establishing the

structure of DNA are

Watson and Crick

or

Avery and Chargaff

Watson and Crick

The scientific study of heredity is called...

genetics

or

crossing-over

genetics

Which of the following shows the correct sequence

of the cell cycle?

G₁-->S-->G₂-->M-->C

or

C-->M-->G₁-->S-->G₂

G₁-->S-->G₂-->M-->C

Homeostasis means

maintaining a stable internal environment

or

a change over long periods of time

maintaining a stable internal environment

Which of the following is a form of active transport?

sodium-potassium pump

or

diffusion

sodium-potassium pump

An advantage of our scientific naming system is that

biologists can communicate regardless of their

native languages

or

Latin names are easy to pronounce

biologists can communicate regardless of their

native languages

Natural selection is the process by which...

the age of selected fossils is calculated

or

organisms with traits well suited to their environment survive and reproduce at a greater rate than less well-adapted organisms in the same environment

organisms with traits well suited to their environment survive and reproduce at a greater rate than less well-adapted organisms in the same environment

Monocots have...

leaves with parallel veins

or

leaves with branching veins

leaves with branching veins