MPI U1 Practice

Question 1

Which sequence should be followed when conducting a laboratory investigation?

Answer 1

define a problem, form a hypothesis gather experimental data, form a conclusion

Question 2

In a scientific investigation, after the question is designed, the next step is most likely

Answer 2

formulating a hypothesis

Question 3

A student conducted an original, well-designed experiment, carefully following proper scientific procedure. In order for the conclusions to become generally accepted, the experiment must

Answer 3

be repeated to verify the reliability of the data

Question 4

In an experiment, the setup that provides a basis of comparison is known as

Answer 4

a variable

Question 5

Which microscope part regulates the amount of light that reaches the objective lens?

Answer 5

diaphragm

Question 6

A protist is moving out of the field of vision of a microscope, as shown in the diagram. To keep the protist centered in the field, in which direction should the slide be moved? (it is located to the top right)

Answer 6

away and to the right

Question 7

The low-power diameter of the field of a microscope is determined to be 1.5 millimeters. A slide of onion skin cells is put on the stage, and exactly 3 cells can be counted lengthwise across the diameter of the field. The average length of each cell is

Answer 7

500

Question 8

Small molecules combine chemically and form large, complex molecules by a process known as

Answer 8

synthesis

Question 9

a hummingbird uses a considerable amount of energy. The energy most directly results from the life activity of

Answer 9

regulation

Question 10

Which life function provides substances that may be used by an organism for its growth and for the repair of its tissues?

Answer 10

nutrition

Question 11

What life process do you not need to do to survive

Answer 11

reproduction

Question 12

The term that represents all the chemical activities that occur in an organism is

Answer 12

metabolism

Question 13

A paramecium absorbs materials from its environment and circulates these materials throughout its cytoplasm. Which life function is described by these activities?

Answer 13

transport

Question 14

In a changing external environment, an organism must be able to maintain relatively constant internal conditions. This maintenance of a stable internal environment is known as

Answer 14

homeostasis

Question 15

What best describes the term theory as used in the gene-chromosome theory?

Answer 15

A theory refers to a scientific explanation that is strongly supported by a variety of experimental data.

Question 16

To locate a specimen on a prepared slide with a compound microscope, a student should begin with the low-power objective rather than the high-power objective because the

Answer 16

field of vision is larger under low power than under high power

Question 17

What best describes an activity that will contribute to the maintenance of homeostasis in an organism?

Answer 17

A desert rattlesnake enters an underground burrow on a hot summer day.

Question 18

The Cell Theory

Answer 18

• cells are the basic unit of life (building blocks)
• cells carry out life processes
• new cells come from pre-existing cells

Question 19

Exceptions

Answer 19

• where did the first cell come from
• viruses
• mitochondria and chloroplasts