Clep Practice Test Flashcards
In embryonic origin, nerve cells are most similar to
Epidermal cells
In the name Homo sapiens, sapiens refers to the
Species
Among multicellular animals, the insects exhibit the greatest diversity of life forms ; therefore
Insects probably occupy the greatest number of niches
The percentage of phosphates in commercial detergents was reduced primarily because phishes were shown to
Increase the growth rates of algae in lakes and rivers
Carbs are most commonly stored in plants in the form of
Starch
A father will transmit the genes of his Y chromosome to
All of his sons only
What would be the best way to maintain the traits of a new variety with favorable characteristics?
Vegetative reproduction of the new variety
In mammals, insulin is produces I. Which of the following structures
Pancreas
What occurs during anaphase I of meiosis
The homologous pairs of chromosomes separate
All living cells have which structure
Plasma membrane
Digestion of proteins in mammals begins in which organ
Stomach
Which if the terrestrial biomes typically had the greatest species diversity
Tropical rain forest
Which of the following instruments would be most useful for studying the internal structure of a chloroplast
Transmission electron microscope
A hawk can have which of the following ecological roles
Secondary and tertiary consumer
Which most directly leads to changes in cellular specialization during embryonic development
Changes in gene expression
Which is most closely related to the cheetah
Squirrel
Which if the following organisms typically transmits the West Nile virus to humans
Mosquitos
A photosynthetic eukaryotic cell typically contains
Chloroplasts and mitochondria
A theory fails the criteria of scientific methodology if
No experiments can test it
Dark lines in the suns spectrum are explained as resulting from
Absorption of energy by atoms in the outer layers of the sun
How old is the sun
4.6 billion years
Sunspots on the surface of the Sun are correlated with
Relatively low temperatures compared with the surrounding surface
Which of the following best describes the principle way in which Earths atmosphere is heated
Earth absorbs short wave radiation from the sun and radiates long wave radiation which is absorbed by the atmosphere
Most of Earths water exists in
The oceans
The release of chlorofluorocarbons gases into the environment has caused great city corn to scientists and the public because these compounds
Are implicated in the reduction of ozone levels in the upper stratosphere
What is not a fossil fuel
Uranium
Geological time intervals
Carboniferous period - age if amphibians
Devonian period age of fishes
Cenozoic era - age of mammals
Mesozoic era- age of dinosaurs
What is the father at from earth
Andromeda galaxy
The half-life if 12-6C is 5600 years. Which statement about 10g of C is correct.
After 5600 years the sample will contain only 5 grams of C
Impact crates dominate the Moons surface, yet are rare on earth . Reasons for this difference include
The moon has no wind
The moon is geologically inactive
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
Direct proportion
The notation 1s^2 2s^2 2p^4 represents
An element with 8 electrons
Which molecules can have more than one equivalent Lewis structure
O3
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
Is only seen in the morning or the evening sky
Which is not generally true of metals
They easily form negative ions
Writhing molecules of a compound, atoms are held together by chemical bonds that are primarily
Electrostatic
An unsorted mixture of clay, boulders, sand, and silt would most likely be deposited from
Glacial ice
Valleys with U shaped cross sections are most likely the result of erosion by
Glaciers
On a global basis for which of the following activities is the most water used watched day
Crop irrigation
Which correctly identifies the constituents of an atom of the isotope 131/53 I
53 protons and electrons
78 neutrons
Which electromagnetic radiation has photons of the least energy
Radio waves
The study of which if the following would likely be the most helpful in providing information about the composition of earths upper mantle
Xenolith inclusions in igneous rocks
What best describes the wind circulation associated with low pressure systems in the Northern Hemisphere
Counterclockwise
Which type of radiation is typically produced in the laboratory by high voltage radiation electron beam impacting a metallic target
X ray radiation
What typically occurs when a forested watershed is clear cut
Soil erosion increase
Which characteristic of a star is most directly rested to the likelihood of that star eventually becoming a black hole
Mass
What best describes antibiotic resistance
It is caused by inappropriate use of antibiotics which allows for selection of resistant bacteria
Which of the following is true about cells that lose the ability to regulate cel division
They can develop into cancer cells
Which is considered necessary for a planet to support life
Liquid water
In a healthy human which should be free of microbes
Spinal fluid
Enzymes are organic macromolecules that
Function as catalysts in chemical reactions
An atom whose ground state electron configuration ends with …p^5 is
A halogen
Water has a higher boiling point that. Hydrogen sulfide because water has strong
Hydrogen bonds
Energy can be transferred from one place to another by
Conduction
Convention
Radiation
Which of the following is true about a sinking parcel of air
It will compress and warm
Pluto is not categorized as a planet by scientists because
It cannot clear debris from its orbit
What is true about vitamins
Vitamins are required for certain chemical reactions
What is evidence that a mountain range was once submerged
The presence of sedimentary rock
Analogous structures are less useful in determining evolutionary patterns among organisms than homologous structures because
Analogous structure reflect adaptation to the environment and homologous structures reflect evolutionary ancestry
A mineral precipitated from seawater
Halite
Sedimentary rock formed from mud
Shale
Material formed early in the process of coal formation
Peat
What can assist in communication between plants but can also be harmful air pollutants
Volatile organic compounds
What makes up about one percent of earths atmosphere
Ar
