Glencoe Science Level Blue

Chapter 3: Interactions of Human Systems

Section 1 Self-Check Quiz-Eng.

1
What percentage of your body's tissues are water?
A)more than 70 percent
B)less than 5 percent
C)about 40 percent
D)between 25 and 35 percent
2
Salt is an __________.
A)organic substance
B)acid
C)inorganic substance
D)element
3
How many elements are known on Earth?
A)less than 30
B)only carbon
C)more than 90
D)exactly 8
4
When two or more elements are combined, they form a(n) __________.
A)offspring
B)compound
C)protein
D)enzyme
5
What kind of organic compound are fats?
A)nucleic acid
B)protein
C)carbon
D)lipids
6
Which of these is an element of carbohydrates?
A)sulfur
B)carbon
C)nitrogen
D)ammonia
7
Which of these is called the blueprint for an organism?
A)nephrons
B)DNA
C)saliva
D)the brain
8
Which of these are part of a cell?
A)villi
B)minerals
C)carbon dioxide
D)endoplasmic reticulum
9
What is the smallest functioning unit in an organism?
A)the cell
B)the muscle
C)the bone
D)the eyelash
10
Which cells protect your body from disease?
A)nerve cells
B)skin cells
C)muscle cells
D)white blood cells
11
Which cells form a protective layer around your entire body?
A)muscle cells
B)skin cells
C)nerve cells
D)skeletal cells
12
Groups of cells are organized to form __________.
A)tissues
B)organ systems
C)carbon dioxide
D)elements
13
__________ is the smallest part of matter.
A)Tissue
B)An atom
C)Blood
D)A cell
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