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Flashcards in Part 1: General Science Deck (25)
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0

_____ are necessary for the body's maintenance, growth, and repair.
(A) Proteins
(B) Carbohydrates
(C) Fats
(D) Vitamins

A
Proteins are necessary for the body's maintenance, growth, and repair.

1

On a Fahrenheit thermometer the boiling point of water at sea level is
(A) 100 degrees
(B) 180 degrees
(C) 212 degrees
(D) 373 degrees

C
On a Fahrenheit thermometer the boiling point of water at sea level is 212 degrees. 100 degrees is the Celsius boiling point, and 373 degrees is the Kelvin boiling point.

2

The process by which blood cells absorb oxygen ad eliminate carbon dioxide and water vapor is called
(A) decomposition
(B) photosynthesis
(C) oxidation
(D) respiration

D
The process by which animals convert oxygen and sugars into carbon dioxide and water is called respiration. The reverse process, by which plants convert carbon dioxide and water into sugar and oxygen, is called photosynthesis.

3

_____ carry blood back to the heart from the capillaries.
(A) Arteries
(B) Veins
(C) Ventricles
(D) Red blood cells

B
Veins carry blood back to the heart from the capillaries.

4

Which of the following depicts a chemical process?
(A) Helium is combined with neon.
(B) Iron forms rust.
(C) Water causes soil erosion.
(D) Ice melts

B
Iron forms rust when water turns iron and oxygen into iron oxide; this is a chemical process.

5

What blood type is a universal donor?
(A) O
(B) A
(C) AB
(D) B

A
Type O is the universal donor, which means that type O blood can be given to anybody.

6

Blood enters the right atrium of the heart from the
(A) aorta
(B) left ventricle
(C) pulmonary vein
(D) vena cava

D
Blood enters the right atrium of the heart from the vena cava.

7

Which of the following substances has the highest pH?
(A) ammonia
(B) battery acid
(C) isopropyl alcohol
(D) water

A
For a substance to have a high pH, it should be a base, or alkaline. A pH of 7 is neutral, like water; a pH of less than 7 is acidic; and a pH of greater than 7 is a base. Of the substances listed, only ammonia is a base.

8

The bulk of digestion takes place in the
(A) pancreas
(B) stomach
(C) small intestine
(D) large intestine

C
The bulk of digestion takes place in the small intestine. Food is broken down completely by enzymes produced in the walls of the small intestine, in the pancreas, and in the liver.

9

Which of the following is NOT part of the female reproductive system?
(A) oviduct
(B) uterus
(C) ovary
(D) testes

D
During human reproduction the male organ, or penis, ejaculates more than 250 million sperm, which is produced in the testes. In the female reproductive system, during ovulation, an egg, or ovum, is released from the ovary and begins to travel through the oviduct (Fallopian tube) and into the uterus.

10

A _____ is a unit of inheritance.
(A) phenotype
(B) genotype
(C) allele
(D) gene

D
A gene is defined as a unit of inheritance.

11

Which of the following is a sedimentary rock?
(A) granite
(B) marble
(C) shale
(D) slate

C
Shale, which derives from clay sediments, is an example of a sedimentary rock.

12

This is the collection of all populations of a habitat.
(A) community
(B) population
(C) ecosystem
(D) biome

A
A community is the collection of all populations of a habitat.

13

A vulture would be considered a
(A) producer
(B) decomposer
(C) scavenger
(D) consumer

C
A vulture is considered a scavenger. Also known as detritivores, these animals consume refuse and decaying organic matter, especially carrion, which is decaying flesh.

14

What type of rock is obsidian?
(A) sedimentary
(B) igneous
(C) metamorphic
(D) none of the above

B
Obsidian is a type of igneous rock.

15

During a lunar eclipse
(A) the Moon lies between the Earth and Sun
(B) the Sun lies between the Moon and Earth
(C) the Earth lies between the Moon and Sun
(D) none of the above

C
A lunar eclipse happens when the Moon passes through the Earth's shadow. During a lunar eclipse, the Earth lies between the Moon and Sun.

16

A centimeter is
(A) one one-hundredth of a meter
(B) one one-thousandth of a meter
(C) one-tenth of a meter
(D) none of the above

A
One one-hundredth of a meter is called a centimeter, and one one-thousandth of a meter is called a millimeter.

17

Momentum is
(A) the push or pull that forces an object to change its speed or direction
(B) the rate of change of velocity
(C) the rate at which an object changes position
(D) the tendency of an object to continue moving in the same direction

D
Momentum is the tendency of an object to continue moving in the same direction. Velocity is the rate at which an object changes position. Acceleration is the rate of change of velocity. Force is the push or pull that forces an object to change its speed or direction.

18

What color light has the highest frequency?
(A) yellow
(B) green
(C) red
(D) violet

D

19

The major portion of an atom's mass consists of
(A) neutrons and protons
(B) electrons and protons
(C) electrons and neutrons
(D) neutrons and positrons

A

20

Which of the following is NOT an example of an arthropod?
(A) crab
(B) centipede
(C) sea horse
(D) spider

A

21

Table salt is considered an
(A) ionic compound
(B) ion
(C) covalent compound
(D) none of the above

A

22

Over the course of 24 hours
(A) the Earth rotates 360 degrees around the Sun
(B) the Moon rotates 360 degrees around the Earth
(C) the Earth rotates 360 degrees about its axis
(D) the Moon rotates 360 degrees about its axis

A

23

Which of the following kingdoms is considered the most primitive?
(A) Fungi
(B) Protista
(C) Monera
(D) Plantae

A

24

Which of the following is the phylum that includes man?
(A) Animalia
(B) Chordata
(C) Mammalia
(D) Primata

C