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Natural Sciences Clep > Clep Practice Test > Flashcards

Clep Practice Test Flashcards

1
Q

In embryonic origin, nerve cells are most similar to

A

Epidermal cells

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2
Q

In the name Homo sapiens, sapiens refers to the

A

Species

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3
Q

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

A

Insects probably occupy the greatest number of niches

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4
Q

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

A

Increase the growth rates of algae in lakes and rivers

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5
Q

Carbs are most commonly stored in plants in the form of

A

Starch

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6
Q

A father will transmit the genes of his Y chromosome to

A

All of his sons only

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7
Q

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

A

Vegetative reproduction of the new variety

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8
Q

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

A

Pancreas

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9
Q

What occurs during anaphase I of meiosis

A

The homologous pairs of chromosomes separate

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10
Q

All living cells have which structure

A

Plasma membrane

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11
Q

Digestion of proteins in mammals begins in which organ

A

Stomach

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12
Q

Which if the terrestrial biomes typically had the greatest species diversity

A

Tropical rain forest

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13
Q

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

A

Transmission electron microscope

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14
Q

A hawk can have which of the following ecological roles

A

Secondary and tertiary consumer

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15
Q

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

A

Changes in gene expression

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16
Q

Which is most closely related to the cheetah

A

Squirrel

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17
Q

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

A

Mosquitos

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18
Q

A photosynthetic eukaryotic cell typically contains

A

Chloroplasts and mitochondria

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19
Q

A theory fails the criteria of scientific methodology if

A

No experiments can test it

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20
Q

Dark lines in the suns spectrum are explained as resulting from

A

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

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21
Q

How old is the sun

A

4.6 billion years

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22
Q

Sunspots on the surface of the Sun are correlated with

A

Relatively low temperatures compared with the surrounding surface

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23
Q

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

A

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

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24
Q

Most of Earths water exists in

A

The oceans

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25
Q

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

A

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

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26
Q

What is not a fossil fuel

A

Uranium

27
Q

Geological time intervals

A

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

28
Q

What is the father at from earth

A

Andromeda galaxy

29
Q

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

A

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

30
Q

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

A

The moon has no wind
The moon is geologically inactive

31
Q

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

A

Direct proportion

32
Q

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

A

An element with 8 electrons

33
Q

Which molecules can have more than one equivalent Lewis structure

A

O3

34
Q

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

A

Is only seen in the morning or the evening sky

35
Q

Which is not generally true of metals

A

They easily form negative ions

36
Q

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

A

Electrostatic

37
Q

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

A

Glacial ice

38
Q

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

A

Glaciers

39
Q

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

A

Crop irrigation

40
Q

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

A

53 protons and electrons
78 neutrons

41
Q

Which electromagnetic radiation has photons of the least energy

A

Radio waves

42
Q

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

A

Xenolith inclusions in igneous rocks

43
Q

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

A

Counterclockwise

44
Q

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

A

X ray radiation

45
Q

What typically occurs when a forested watershed is clear cut

A

Soil erosion increase

46
Q

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

A

Mass

47
Q

What best describes antibiotic resistance

A

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

48
Q

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

A

They can develop into cancer cells

49
Q

Which is considered necessary for a planet to support life

A

Liquid water

50
Q

In a healthy human which should be free of microbes

A

Spinal fluid

51
Q

Enzymes are organic macromolecules that

A

Function as catalysts in chemical reactions

52
Q

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

A

A halogen

53
Q

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

A

Hydrogen bonds

54
Q

Energy can be transferred from one place to another by

A

Conduction
Convention
Radiation

55
Q

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

A

It will compress and warm

56
Q

Pluto is not categorized as a planet by scientists because

A

It cannot clear debris from its orbit

57
Q

What is true about vitamins

A

Vitamins are required for certain chemical reactions

58
Q

What is evidence that a mountain range was once submerged

A

The presence of sedimentary rock

59
Q

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

A

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

60
Q

A mineral precipitated from seawater

A

Halite

61
Q

Sedimentary rock formed from mud

A

Shale

62
Q

Material formed early in the process of coal formation

A

Peat

63
Q

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

A

Volatile organic compounds

64
Q

What makes up about one percent of earths atmosphere

A

Ar

Natural Sciences Clep (4 decks)

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