Unit 1 Review

Unit 1: Investigating Cell
Structures and Functions

Review

Cell Structures

●Organelle - Tiny cell parts that carry out specific functions in
the cell

●Cell Membrane – controls what comes in and out of the cell

●Cell Wall (plant only) – rigid layer surrounding a plant cell that
provides support, strength, and shape

●Nucleus – controls the activities of the cell

●Cytoplasm – thick gel-like fluid inside the cell between the
nucleus and the cell membrane

Cell Structures (cont.)

•Mitochondria – produces the energy needed for the
cell to carry out its functions

•Chloroplast (plant only) – contains chlorophyll and
makes food from sunlight

•Vacuole – the storage area of the cell

Drag and Drop

regulates cell contents

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stores water

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produces sugar

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converts energy

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Drag these tiles and drop them in the correct blank above

Cell Membrane

vacuole

Chloroplast

Mitochondrion

Multiple Choice

Which of the following controls what enters and exits a cell?

• cell wall

• mitochondrion

• vacuole

• cell membrane

Multiple Choice

Which of the following describes the function of the mitochondria?

• located in the cytoplasm

• bacteria-sized organelle

• converts energy for cell use

• contains folded inner membrane

Hotspot

Identify the nucleus.

Hotspot

Identify the mitochondrion.

Hotspot

Identify the cell wall.

Hotspot

Identify the chloroplast.

Animal and Plant Cell

Multiple Choice

Which structures do plant and animal cells have in common?

• vacuole, chloroplast, nucleus

• cell membrane, nucleus, mitochondrion

• nucleus, cell wall, cell membrane

• mitochondrion, vacuole, cell wall

Multiple Choice

Which part makes a plant cell different from an animal cell?

• cell membrane

• cell wall

• cytoplasm

• nucleus

Multiple Choice

Which of the following statements accurately represents the differences in a plant and animal cells?

• Only plant cells have a cell wall, chloroplasts, and a large vacuole.

• Only animal cells have a cell wall, chloroplasts, and a large vauole.

• Only plant cells have a cell membrane, mitochondria, and cytoplasm.

• Only animal cells have a cell membrane, mitochondria, and cytoplasm

Fill in the Blanks

Fill in the Blanks

Cell Theory

Multiple Choice

A student observing a sample of cheek cells noticed that all of the cells were identical. Which statement from cell theory explains why these cells are identical?

• They are all eukaryotic cells.

• All cells com from other cells through cell division.

• They do not have a cell wall.

• They have a chloroplast.

Multiple Choice

According to cell theory, what do all organisms have in common?

• They can all reproduce by spontaneous generation.

• Each organism is able to photosynthesize.

• Cells are the basic unit of structure for each organism.

• They are all made up of the same kinds of atoms.

Multiple Select

Which of the following are a part of cell theory? Select TWO correct answers.

• All cells arise from preexisting cells

• All cells have a nucleus.

• Cells are the basic unit of life.

• Cells always have a cell wall.

• Cells make up non-lving things.

Multiple Choice

The development of the microscope was used to observe cells and eventually develop "cell theory". Which of the following is the most basic explanation of "cell theory".

• Every object in the universe is made of cells.

• Cells are made from atoms during chemical reactions.

• All cells are identical.

• All living things are made of cells.

Multiple Choice

Cell theory is the current leading theory used to describe characteristics of living things. Which of the following is NOT part of the Cell Theory?

• All organisms are composed of one or more cells.

• All cells have the ability to move.

• The cell is the basic unit of structure and function in living organisms.

• All cells come from pre-existing cells.

Multiple Choice

In 1855 biologist Rudolph Virchow added to Schleiden's and Schwann's observations. Which statement is part of Virchow's cell Theory?

• All cells have a cell wall.

• All cells arise from pre-existing cells.

• All cells are capable of photosynthesis.

• All cells can develop into any other type of cell.

Levels of Organization

Levels of Organization

•Cell - The most basic unit of structure and function of all living
things

•Tissue - Groups of similar cells performing the same function

•Organ - A group of tissues that work together to perform a
specific function

•Organ System - A group of organs that work together to perform
a specific function

•Organism - A living individual that can reproduce, grow, and
maintain homeostasis

Reorder

Order the Levels of Organization from the simpliest to most complex.

• cells

• tissues

• organs

• organ systems

• organisms

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

Seeds are the offspring of mature plants. If a seed germinates and survives, it will grow to become the whole plant. Based on this information, what level of organization describes seeds?

• cell

• tissue

• organ

• organ system

• organism

Multiple Choice

A leaf is made up of different layers of tissues. Which level of organization best describes a leaf?

• cell

• tissue

• organ

• organ system

• organism

Multiple Choice

The stomach along with the small intestine work together to digest the food you eat. Which level of organization best describe the level of organization described?

• cell

• tissue

• organ

• organ system

• organism