.

Choose the best answer. A process that tells cells to stop dividing if they touch each other is _____.

	cytokinesis
	cell renewal
	cell regeneration
	contact inhibition

2.

Drag and drop the organelle to itsfunction.

	convert energy from the sun
	control center
	process and transport
	storage
	powerhouse plant or make energy
	make/assemble proteins
	support and structure
	cleanup

Choices

chloroplast

Golgi apparatus/ER

vacuoles

nucleus

ribosome

mitochondria

lysosome

cytoskeleton

3.

Choose the best answer. Prokaryotic cells do not have a true _____.

	nucleoid
	ribosome
	capsule
	nucleus

4.

Choose the best answer. Osmosis and diffusion are two types of _____.

	passive transport
	photosynthesis
	active transport
	contact inhibition

5.

Choose the best answer. Possessing a true nucleus is the definition of a(n) _____ cell.

	turgor
	eukaryotic
	prokaryotic
	turgid

6.

Choose the best answer. A hypertonic solution surrounds a cell; water will ___.

	move into the cell
	move into and out of the cell at an equal rate
	move out of the cell
	be transported by proteins in the plasma membrane

7.

Choose the best answer. _____ pressure gives nonwoody plants their shape.

	Aerobic
	Anaerobic
	Chlorophyll
	Turgor

8.

Choose the best answer. Most of a cell's growth and activity occurs in the _____ phase.

	S
	M
	G2
	G1

9.

Choose the best answer. Which stage of mitosis is shown in the picture?

	prophase
	metaphase
	anaphase
	telophase

10.

Choose the best answer. Energy given to proteins in the phospholipid layer is required for _____.

	aerobic
	passive transport
	active transport
	anaerobic

11.

Choose the best answer. Complete the diagram for the organization of life.

	ecosystem
	organs
	organelle
	organisms

12.

Choose the best answer. In the _____ reaction, NADPH and oxygen are the products.

	light-dependent
	dark reaction
	chemical
	combustion

13.

Fill in the blank. Anaerobic respiration produces

molecules of ATP.

14.

Choose the best answer. A human baby weighs 8 pounds at birth and 150 pounds as an adult. Which statement is TRUE about this human's growth?

	The cells grew bigger as the human developed.
	The cells grew bigger during the G1 and G2 growth phases.
	The number of cells increased because of mitosis.
	The number of cells increased because of meiosis.

15.

Choose the best answer. Chromosomes are duplicated in the _____ phase.

	G0
	G2
	S
	G1

16.

Choose the best answer. In the _____ part of photosynthesis, sugar is formed.

	combustion reaction
	light-dependent reaction
	chemical reaction
	dark reaction

17.

Choose the best answer. _____ help chemical reactions occur by decreasing the activation energy.

	Atoms
	Enzymes
	Substrates
	Products

18.

Choose the best answer. Which statement shows similarity between photosynthesis and respiration?

	They both convert energy to a useful form.
	They both require light energy.
	They both use carbon dioxide as a reactant.
	They both use carbon dioxide as a product.

19.

Choose the best answer. Cancer cells are often a result of the disruption of what process in cells?

	cell cycle
	respiration
	negative feedback
	natural selection

20.

Drag and drop the terms to the definitions.

	the structure that contains the DNA of the cell
	the process where the cytoplasm divides
	a part of cell division that results in two daughter nuclei that are each exactly the same as the original cell
	the cell's way of converting food molecules into a form useful to the cell
	the amount of time from the beginning of one cell division to the beginning of the next cell division
	the part of the cell cycle when the cell is not dividing, consisting of the G1, S, and G2 phases
	the process of staying the same

Choices

interphase

mitosis

cellular respiration

cell cycle

cytokinesis

homeostasis

chromosome

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