Clep Practice Test

Question 1

In embryonic origin, nerve cells are most similar to

Answer 1

Epidermal cells

Question 2

In the name Homo sapiens, sapiens refers to the

Answer 2

Species

Question 3

Among multicellular animals, the insects exhibit the greatest diversity of life forms ; therefore

Answer 3

Insects probably occupy the greatest number of niches

Question 4

The percentage of phosphates in commercial detergents was reduced primarily because phishes were shown to

Answer 4

Increase the growth rates of algae in lakes and rivers

Question 5

Carbs are most commonly stored in plants in the form of

Answer 5

Starch

Question 6

A father will transmit the genes of his Y chromosome to

Answer 6

All of his sons only

Question 7

What would be the best way to maintain the traits of a new variety with favorable characteristics?

Answer 7

Vegetative reproduction of the new variety

Question 8

In mammals, insulin is produces I. Which of the following structures

Answer 8

Pancreas

Question 9

What occurs during anaphase I of meiosis

Answer 9

The homologous pairs of chromosomes separate

Question 10

All living cells have which structure

Answer 10

Plasma membrane

Question 11

Digestion of proteins in mammals begins in which organ

Answer 11

Stomach

Question 12

Which if the terrestrial biomes typically had the greatest species diversity

Answer 12

Tropical rain forest

Question 13

Which of the following instruments would be most useful for studying the internal structure of a chloroplast

Answer 13

Transmission electron microscope

Question 14

A hawk can have which of the following ecological roles

Answer 14

Secondary and tertiary consumer

Question 15

Which most directly leads to changes in cellular specialization during embryonic development

Answer 15

Changes in gene expression

Question 16

Which is most closely related to the cheetah

Answer 16

Squirrel

Question 17

Which if the following organisms typically transmits the West Nile virus to humans

Answer 17

Mosquitos

Question 18

A photosynthetic eukaryotic cell typically contains

Answer 18

Chloroplasts and mitochondria

Question 19

A theory fails the criteria of scientific methodology if

Answer 19

No experiments can test it

Question 20

Dark lines in the suns spectrum are explained as resulting from

Answer 20

Absorption of energy by atoms in the outer layers of the sun

Question 21

How old is the sun

Answer 21

4.6 billion years

Question 22

Sunspots on the surface of the Sun are correlated with

Answer 22

Relatively low temperatures compared with the surrounding surface

Question 23

Which of the following best describes the principle way in which Earths atmosphere is heated

Answer 23

Earth absorbs short wave radiation from the sun and radiates long wave radiation which is absorbed by the atmosphere

Question 24

Most of Earths water exists in

Answer 24

The oceans

Question 25

The release of chlorofluorocarbons gases into the environment has caused great city corn to scientists and the public because these compounds

Answer 25

Are implicated in the reduction of ozone levels in the upper stratosphere

Question 26

What is not a fossil fuel

Answer 26

Uranium

Question 27

Geological time intervals

Answer 27

Carboniferous period - age if amphibians Devonian period age of fishes Cenozoic era - age of mammals Mesozoic era- age of dinosaurs

Question 28

What is the father at from earth

Answer 28

Andromeda galaxy

Question 29

The half-life if 12-6C is 5600 years. Which statement about 10g of C is correct.

Answer 29

After 5600 years the sample will contain only 5 grams of C

Question 30

Impact crates dominate the Moons surface, yet are rare on earth . Reasons for this difference include

Answer 30

The moon has no wind The moon is geologically inactive

Question 31

At a fixed pressure when the temperature of a gas sample increases, the volume increases. This relationship between the temp and the volume of a gas is best describes as

Answer 31

Direct proportion

Question 32

The notation 1s^2 2s^2 2p^4 represents

Answer 32

An element with 8 electrons

Question 33

Which molecules can have more than one equivalent Lewis structure

Answer 33

O3

Question 34

If the following planets that are visible with the naked eye -Venus, Mara, Jupiter and Saturn - only Venus has an or j smaller than that of Earth. This means that Venus

Answer 34

Is only seen in the morning or the evening sky

Question 35

Which is not generally true of metals

Answer 35

They easily form negative ions

Question 36

Writhing molecules of a compound, atoms are held together by chemical bonds that are primarily

Answer 36

Electrostatic

Question 37

An unsorted mixture of clay, boulders, sand, and silt would most likely be deposited from

Answer 37

Glacial ice

Question 38

Valleys with U shaped cross sections are most likely the result of erosion by

Answer 38

Glaciers

Question 39

On a global basis for which of the following activities is the most water used watched day

Answer 39

Crop irrigation

Question 40

Which correctly identifies the constituents of an atom of the isotope 131/53 I

Answer 40

53 protons and electrons 78 neutrons

Question 41

Which electromagnetic radiation has photons of the least energy

Answer 41

Radio waves

Question 42

The study of which if the following would likely be the most helpful in providing information about the composition of earths upper mantle

Answer 42

Xenolith inclusions in igneous rocks

Question 43

What best describes the wind circulation associated with low pressure systems in the Northern Hemisphere

Answer 43

Counterclockwise

Question 44

Which type of radiation is typically produced in the laboratory by high voltage radiation electron beam impacting a metallic target

Answer 44

X ray radiation

Question 45

What typically occurs when a forested watershed is clear cut

Answer 45

Soil erosion increase

Question 46

Which characteristic of a star is most directly rested to the likelihood of that star eventually becoming a black hole

Answer 46

Mass

Question 47

What best describes antibiotic resistance

Answer 47

It is caused by inappropriate use of antibiotics which allows for selection of resistant bacteria

Question 48

Which of the following is true about cells that lose the ability to regulate cel division

Answer 48

They can develop into cancer cells

Question 49

Which is considered necessary for a planet to support life

Answer 49

Liquid water

Question 50

In a healthy human which should be free of microbes

Answer 50

Spinal fluid

Question 51

Enzymes are organic macromolecules that

Answer 51

Function as catalysts in chemical reactions

Question 52

An atom whose ground state electron configuration ends with …p^5 is

Answer 52

A halogen

Question 53

Water has a higher boiling point that. Hydrogen sulfide because water has strong

Answer 53

Hydrogen bonds

Question 54

Energy can be transferred from one place to another by

Answer 54

Conduction Convention Radiation

Question 55

Which of the following is true about a sinking parcel of air

Answer 55

It will compress and warm

Question 56

Pluto is not categorized as a planet by scientists because

Answer 56

It cannot clear debris from its orbit

Question 57

What is true about vitamins

Answer 57

Vitamins are required for certain chemical reactions

Question 58

What is evidence that a mountain range was once submerged

Answer 58

The presence of sedimentary rock

Question 59

Analogous structures are less useful in determining evolutionary patterns among organisms than homologous structures because

Answer 59

Analogous structure reflect adaptation to the environment and homologous structures reflect evolutionary ancestry

Question 60

A mineral precipitated from seawater

Answer 60

Halite

Question 61

Sedimentary rock formed from mud

Answer 61

Shale

Question 62

Material formed early in the process of coal formation

Answer 62

Peat

Question 63

What can assist in communication between plants but can also be harmful air pollutants

Answer 63

Volatile organic compounds

Question 64

What makes up about one percent of earths atmosphere

Answer 64

Ar