7th Grade Life Science, Fall Unit 1 Cells

Question 1

Plant cells have features that differ from animal cells:

Accepted Answer

a rigid cell wall and chloroplasts.

Question 2

What are the basic structural units of living organisms?

Accepted Answer

Cells

Question 3

Cell membrane lets H2O, O2, CO2, & glucose to pass, but others blocked because the membrane is

Accepted Answer

semi-permeable

Question 4

A biology student observed cells shown under a microscope. Cells most likely come from:

Accepted Answer

Plant

Question 5

Which of the structures is found in plant cells but not in animal cells?

Accepted Answer

chloroplasts

Question 6

Which of the following structures is not present in animal cells?

Accepted Answer

cell wall

Question 7

Which structure is primarily responsible for directing all processes of a plant cell?

Accepted Answer

nucleus

Question 8

Which of these describes the primary function of cell membranes?

Accepted Answer

They allow certain molecules to enter and exit the cell.

Question 9

What is the main function of a selectively permeable cell membrane?

Accepted Answer

regulates what enters and leaves the cel

Question 10

Which statement explains why the nucleus is referred to as the brain of plant & animal cells?

Accepted Answer

It controls the activities of the cell.

Question 11

Cell Defect: loss of ability to regulate the passage of water, food, and waste in/out of cell.

Accepted Answer

Cell Membrane has a defect

Question 12

In a cell with a high energy requirement, which organelles are found in a high concentration

Accepted Answer

Mitochondria

Question 13

Which of the following is a main function of the cell wall?

Accepted Answer

to give the cell a rigid structure

Question 14

Substances enter any plant or animal cell by passing through which of the following structures?

Accepted Answer

Cell membrane

Questions 14