Glencoe Science Level Blue

Chapter 3: Interactions of Human Systems

Interactions of Human Systems

1
What kind of organic compound are fats?
A)nucleic acid
B)carbon
C)lipids
D)protein
2
What is the smallest functioning unit in an organism?
A)the muscle
B)the bone
C)the eyelash
D)the cell
3
Salt is an __________.
A)organic substance
B)inorganic substance
C)element
D)acid
4
How many elements are known on Earth?
A)less than 30
B)only carbon
C)more than 90
D)exactly 8
5
What percentage of your body's tissues are water?
A)about 40 percent
B)more than 70 percent
C)less than 5 percent
D)between 25 and 35 percent
6
Your heart is an example of a(n) __________.
A)positive feedback system
B)organ
C)organ system
D)protein
7
Which of these is an element of carbohydrates?
A)sulfur
B)ammonia
C)carbon
D)nitrogen
8
__________ is the smallest part of matter.
A)An atom
B)A cell
C)Blood
D)Tissue
9
Which cells protect your body from disease?
A)white blood cells
B)skin cells
C)muscle cells
D)nerve cells
10
Keeping your body at the right temperature is an example of __________.
A)homeostasis
B)lipids
C)nephrons
D)reproduction
11
Which two body systems interact in the lungs?
A)the urinary system and the reproductive system
B)the endocrine system and the lymphatic system
C)the nervous system and the muscular system
D)the circulatory system and the respiratory system
12
Groups of cells are organized to form __________.
A)carbon dioxide
B)elements
C)tissues
D)organ systems
13
Which system controls homeostasis in the human body?
A)the endocrine system
B)the urinary system
C)the lymphatic system
D)the nervous system
14
Which system contains the stomach?
A)the muscular system
B)the circulatory system
C)the reproductive system
D)the digestive system
15
Which of these is an example of a positive feedback mechanism?
A)Blood vessels dilate to release internal body heat to control temperature.
B)A woman's uterus contracts during childbirth to push the baby out of the birth canal.
C)Kidneys filter at a faster rate when salt concentration in the body gets too high.
D)The heart pumps slower to respond to an increase in blood pressure.
16
Which of these is part of the circulatory system?
A)the pancreas
B)the kidneys
C)the brain
D)the heart
17
Which of these is called the blueprint for an organism?
A)nephrons
B)the brain
C)DNA
D)saliva
18
Which of these are part of a cell?
A)carbon dioxide
B)villi
C)endoplasmic reticulum
D)minerals
19
Which of these is NOT part of the lymphatic system?
A)thymus
B)spleen
C)kidneys
D)tonsils
20
What are the filtering units of the kidneys called?
A)nephrons
B)villi
C)carbohydrates
D)alveoli
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