Science Quiz

One characteristic of all living things is that they

• develop organ systems

• produce identical offspring

• maintain internal stability

• synthesize only inorganic matter

To be useful in Science, a hypothesis must be

• measurable

• correct

• testable

• observable

In an investigation designed to determine the effect of ultraviolet light on mold spore growth, the group of mold spores grown without receiving any ultraviolet light is known as the

• limiting factor

• hypothesis

• dependent variable

• control

Diagrams, tables and graphs are used by scientists mainly to

• predict the independent variable

• test a hypothesis

• design a research plan for the experiment

• organize data

A student hypothesized that lettuce seeds would not sprout (germinate) unless they were exposed to darkness. The student planted 10 lettuce seeds under a layer of soil and scattered 10 lettuce seeds on top of the soil. The data collected are shown in the table below. One way to improve the validity of these results would be to

• concluded that darkness is required for seed germination

• conclude that light is necessary for seed germination

• revise the hypothesis

• repeat the experiment

A wet-mount slide preparation of a specimen is stained in order to

• eliminate some organelles

• make cell structures more visible

• use the high-power lens

• remove water from the slide

While viewing a slide of rapidly moving sperm cells, a student concludes that these cells require a large amount of energy to maintain their activity. The organelles that most directly provide this energy are known as

• mitochondria

• ribosomes

• vacuoles

• chloroplasts

Which letter indicates a cell structure that directly controls the movement of molecules into and out of the cell?

• A

• B

• C

• D

Which cell structure contains information needed for protein synthesis?

• A

• B

• C

• D

The enzyme would most likely affect reactions involving

• molecule A, only

• molecule C, only

• molecules B and D

• molecules A and C