Lesson on Cells and Cell Theory

Multiple Choice

Bell Ringer #1:

1. 1. During cellular respiration, cells break down sugars to release energy.  In this process, water and carbon dioxide are produced as waste products.  What must happen to these waste products in order for a cell to maintain homeostasis? 

• They must be excreted (removed) from the cell.

• They must be used for photosynthesis.

• They must be digested and used as food.

• They must be permanently stored inside the cell.

Multiple Choice

All living organisms are composed of ________ .

• one or more cells.

• only one cell.

• at least three cells.

• at least 100 cells.

Multiple Choice

Cells are the basic unit of life. Thus, cells are responsible for maintaining a stable internal environment within living organisms.

How do humans continue to maintain a stable internal environment if billions of cells die within their bodies each day?

• New cells are eaten in the form of food.

• Humans need fewer cells as they get older.

• The cells must be able to reproduce.

• Exposure to the Sun stimulates cell growth.

Multiple Choice

Which of the following statements is part of cell theory?

• All cells come from pre-existing cells.

• All living things are made up of one or more cells.

• Cells are the basic units of living things.

• all of these

Multiple Choice

Which of the following theories did these discoveries lead to?

• the germ theory

• the theory of evolution

• the cell theory

• the atomic theory

Multiple Choice

A scientist is comparing two cells.

One cell, cell A, is from a unicellular organism, and the other cell, cell B, is from a multicellular organism.

What functional differences will the scientist most likely see when comparing the two cells?

• Cell A is very small and has only a few organelles, while cell B is very large and has many organelles.

• Cell A performs all of the organism's necessary functions, while cell B performs only one or a few functions.

• Cell A performs only one or a few functions, while cell B performs all of the organism's necessary functions.

• Cell A is very large and has many organelles, while cell B is very small and has only a few organelles.

Multiple Choice

The organism shown is ______, and it is a _______.

• single-celled; plant

• multi-celled; fungi

• multi-celled; plant

• single-celled; bacteria

Multiple Choice

The Earth is populated mostly by single-celled organisms, such as bacteria. However, there are many multi-celled organisms as well.

Which of the following is a multi-celled organism?

• insect

• flower

• human

• all of these

Multiple Choice

Which of the following is a multi-celled organism?

• insect

• flower

• human

• all of these

Multiple Choice

A ________ is a rigid layer that surrounds a plant cell, providing structural support.

• cell wall

• cell membrane

• chloroplast

• nucleus

Multiple Choice

Looking at the figures provided, assume that the figures are drawn to the same scale. Which of the following is the largest structure in the animal cell?

• nucleus

• mitochondrion

• vacuole

• chloroplast

Multiple Choice

Which of the following is a substance that is found between the cell membrane and the nucleus, which primarily consists of water and holds organelles?

• chloroplast

• mitochondria

• cell membrane

• cytoplasm

Multiple Choice

The diagram shows the structures of a plant cell.

What is structure 1, and how does it help sustain life?

• Structure 1 is the nucleus, which is the control center of the cell.

• Structure 1 is a vacuole, which temporarily stores wastes.

• Structure 1 is the cell wall, which provides structural support for the cell.

• Structure 1 is a chloroplast, which is the site of photosynthesis.

Multiple Choice

The diagram below shows the structure of an animal cell.

What is structure 2, and how does it help sustain life?

• Structure 2 is the nucleus, which serves as the control center of the cell.

• Structure 2 is the cytoplasm, which contains organelles and is the site of many cell processes.

• Structure 2 is the cell membrane, which controls what enters and leaves the cell.

• Structure 2 is a chloroplast, which is the site of photosynthesis.

Multiple Choice

In a cell, what is the function of the cell membrane?

• It controls the entry and exit of substances.

• It generates energy for the cell.

• It removes waste and stores ingested food.

• It only maintains the cell shape.

Multiple Choice

The diagram shows a plant cell. What is the main function of the central vacuole in a plant cell?

• absorbs energy from the Sun to produce food

• holds water and maintains turgor pressure

• breaks down molecules to release energy

• contains the cell's genetic material

Multiple Choice

During the process of cellular respiration, living organisms extract energy from food. What is the primary purpose of this process?

• to create and destroy matter

• to help maintain a stable internal environment

• to make the cells needed to produce offspring

• to encourage cellular death

Multiple Choice

In order to maintain a stable internal environment, the cells of all living organisms must be able to ___________ .

• get rid of waste.

• reproduce.

• extract energy from food.

• all of these

Multiple Choice

EXIT TICKET # 1

Students in an 8th grade science class are investigating different cells under a microscope, as shown by the three microscope drawings.

What part of the cell theory is best illustrated by these three slides?

• All organisms are composed of cells.

• All organisms are composed of a single cell.

• All organisms are composed of more than one cell.

• All organisms come from pre-existing cells that divide.

Multiple Choice

EXIT TICKET # 2

1. During science class, a group of students went on a field trip to a nearby pond where they collected samples of pond water and pond plants. The students also looked at some prepared slides of human cheek cells. The students used a microscope to study cells in their samples. The results are shown in the following table.

Looking at the chart provided, the students need to develop a way to distinguish between plant and animal cells. Which of the following structures/organelles would be most useful to distinguish between a plant and an animal cell?

• cell membrane

• cell wall

• nucleus

• vacuole

Multiple Choice

EXIT TICKET # 3

Look at the diagram of mitosis show.

Which statement describes the part of the cell theory shown in this diagram?

• All cells come from other cells.

• All organisms are composed of cells.

• Cells are the basic units of life.

• Some organisms are single-celled and some are multicellular.

Multiple Choice

EXIT TICKET # 4

Organs are made up of vast numbers of cells that perform various tasks. When cells die within an organ, homeostasis is interrupted.

What will most likely happen so that homeostasis can be maintained? 

• The organ will continue to work, but with decreased function.

• The organ will immediately shut down so that no further damage will occur. 

•    The remaining cells will be unable to divide and the organ will quit working. 

•     The remaining cells will reproduce in order to replace the ones that have died.

Multiple Choice

EXIT TICKET # 4

The cell membrane regulates the amount of water and other molecules as they pass into or out of the cell.

What is this balance between the water on the inside and outside of the cell called?

• Regulation

•    Homeostasis

•      Turgor Pressure

•      Hydrological Stability