PRACTICE QUIZ03 The Cell 1

Name / Date
Science / Class
/ Grade 7
PRACTICE QUIZ03 The Cell /

Part 1: Cell parts and Osmosis

1practice. Which TWO choices best describe the function of the cell wall of a plant?

  1. reproduction
  2. protection
  3. energy
  4. shape

2practice. Which cell part holds the genetic materials that determine many of our traits?

  1. nucleus
  2. cytoplasm
  3. chloroplast
  4. plasma membrane

Part 2: Osmosis

3practice. This picture shows two liquids in a container, with a barrier between them. Which side shows a higher concentration of water molecules, and how do you know?

4practice. This picture shows two liquids in container A. One liquid is plain water, and the other liquid is water mixed with sugar. A “semi-permeable” membrane is between them. Over time, some liquid goes through the membrane because of osmosis. Which image (A, B, or C) shows what happens with osmosis, and how do you know?

Part 3: Finding volume by formula or displacement

5practice. Volume is a measure of

  1. Weight
  2. Gravity
  3. Voltage
  4. Capacity

6practice. What is the volume of a rectangular prism that measures 10m by 20m by 5m?

7practice. A unit for volume is

a. milliliters

b. newtons

c. inches

d. grams

8practice. Determine the volume of liquid in each of the following cylinders. Assume that each cylinder measures in milliliters.

9practice. Here is a cylinder before and after a rock is added. Assume that the cylinder measures in milliliters.

What is the volume of the rock?

Part 4 Finding mass by using the triple beam balance

Note: There is a triple beam tutorial at

10practice. Name a metric unit for mass.

11practice. What is the first thing you do with a triple-beam balance?

  1. Place the object on the pan or platform.
  2. Calibrate the pointer to line up with the zero mark.
  3. Move all masses to the zero setting.

Part 3. The Scientific Method

Use the following situation to answer questions 12-15. Little bumps on our tongues, called papillae or taste buds, help us to taste. People who have more of these bumps are more sensitive to different flavors. These people can be called “supertasters.” John and Jessica wonder if more boys than girls are “supertasters,” or visa versa.

12practice. What could be a hypothesis for this investigation? (answers can vary).

13practice. What is the independent variable (the X axis of a graph)?

14practice. What is the dependent variable (the Y axis of a graph)?

15practice. What is one control (or should be)?