North Carolina Science Grade 8

Chapter 17: Cell Processes

Cell Processes

1.
Why are plants green?
A)They contain chlorophyll.
B)They contain milk.
C)They contain marrow.
D)They contain eggs and sperm.
2.
Which of these is an organic compound?
A)lipids
B)potassium chloride
C)calcium phosphate
D)water
3.
Genetic material is found in which organic compound?
A)proteins
B)sodium bicarbonate
C)carbohydrates
D)nucleic acid
4.
At least 60 percent of a humans body weight consists of water. About how many pounds of water does a 140-pound person's body have?
A)140
B)48
C)84
D)840
5.
You use a washing machine to get dirt off of your clothes. The machine is like __________ in cells.
A)proteins
B)enzymes
C)glucose
D)carbon
6.
Which process happens when vesicles release their contents outside the cell?
A)passive transport
B)photosynthesis
C)exocytosis
D)chemical reactions
7.
__________ is probably the most important inorganic compound for organisms.
A)A carbohydrate
B)Water
C)Sodium bicarbonate
D)A lipid
8.
Metabolism is the total of all __________ in an organism.
A)fats
B)organic compounds
C)ions
D)chemical reactions
9.
Water is a/an __________.
A)compound
B)lipid
C)enzyme
D)element
10.
Which of these is an example of passive transport?
A)endocytosis
B)ions
C)osmosis
D)RNA
11.
When two or more substances mix evenly, they form a __________.
A)vesicle
B)solution
C)producer
D)chloroplast
12.
What stops the process of diffusion in cells?
A)respiration
B)equilibrium
C)elements
D)vesicles
13.
Plants make food through __________.
A)atoms
B)nitrogen
C)osmosis
D)photosynthesis
14.
Which of these is a form of energy?
A)air
B)atoms
C)snails
D)heat
15.
What is the transport and storage structure in a cell's cytoplasm?
A)nucleus
B)inorganic compounds
C)cell membrane
D)vesicles
16.
What is produced as a result of respiration?
A)hydrochloric acid and sodium
B)sugars and oxygen
C)carbon dioxide and water
D)phosphorous and starch
17.
Which of these is an inorganic compound?
A)phospholipids
B)fats
C)hydrochloric acid
D)sugars
18.
Which of these processes releases energy?
A)fermentation
B)diffusion
C)respiration
D)exocytosis
19.
Which two elements make up most of your body?
A)calcium and silver
B)chlorine and magnesium
C)sulfur and gold
D)oxygen and carbon
20.
Where is most of your body's water located?
A)around the heart
B)within body cells
C)outside body cells
D)in the brain
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