Blizzards, earthquakes, floods and wildfires (CH. 36A. Population Ecology) are e
ID: 7849 • Letter: B
Question
Blizzards, earthquakes, floods and wildfires (CH. 36A. Population Ecology) are examples ofa. density-dependent factors regulating population size.
b. density-independent factors regulating population size.
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41. Ch 36-23 Human pop dynamics
(Points: 1)
If a human population is growing at (Ch. 36B, Human population dynamics) at the nearly unbelievable natural rate of 7%/yr, it will double in number in _____.
a. 7 years
b. 23-24 years
c. 35 years
d. no way to tell from the information given
e. 10 years
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42. Ch 16-11 macroevol
(Points: 1)
Most of the currently familiar domains, kingdoms and phyla of living things (life evolving, Ch. 16) were already well-represented on Earth about _________ years ago.
a. 3.5 billion
b. 500 million
c. 65 million
d. 2 billion
e. 4.6 billion
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43. Ch 16-02 origin of life
(Points: 1)
Considering that humans may learn enough about life (origin of life, Ch. 16) to create living cells from abiotic materials someday, molecular biologists already know how to make all but one of these cell components in cell-free reaction mixtures
a. polypeptide chains (simple proteins)
b. artificial chromosomes that will work in some eukaryotic cells
c. DNA (genes) and RNA (mRNA)
d. cell membranes
e. mitochondria
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44. Ch 19-11 human origins
(Points: 1)
The earliest known bipedal hominoids ( ancestors of humans, Ch. 19) were
a. a species similar to modern gorillas.
b. the australopithecines or similar types dating from about 3.5 MYA, including the skeleton known as "Lucy" and fossil footprints of these in East Africa.
c. quadrapeds like the modern chimpanzee.
d. members of the species Homo habilis.
e. Actually, there were no bipeds in our ancestral lineage until the variety of Homo sapiens called archiac humans, appeared.
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45. Ch 19-01 human origins
(Points: 1)
The earliest members of the genus Homo (Origin of humans, Ch. 19)
a. had a large brain, compared to other hominids.
b. probably hunted dinosaurs.
c. lived about 6 MYA.
d. lived in Europe.
e. were the first hominids to be bipedal.
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46. Ch 19-12 human origins
(Points: 1)
The earliest primates (human origins, CH. 19) were most similar to modern _____.
a. ground-dwelling hominids
b. arboreal anthropoids
c. ground-dwelling prosimians
d. arboreal prosimians
e. ground-dwelling anthropoids
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47. Ch 19-08
(Points: 1)
Which one of these (human biological relatives, Ch. 19) is NOT an anthropoid primate?
a. any New World monkey
b. "Lucy" the australopithecine biped
c. lemur
d. living human
e. chimpanzee
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48. Ch 36-22 Human pop dynamics
(Points: 1)
According to the latest research predictions, the world population of humans (Ch. 36, Human population dynamics) is now expected to double in the next 43 years. This is nearest to what rate (natural increase per year, in percent) for an exponential growth curve?
a. 1.5%/yr
b. 0.5%/yr
c. 5%/yr
d. 3%/yr
e. 10%/yr
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49. Ch 16-09 proks, extreme adaptations
(Points: 1)
Among all kinds of metabolically inactive, "resting" types of cells (extreme adaptations, Ch.16), one of these is known to be most resistant to harsh conditions.
a. thick-walled spores of some fungi
b. pollen grains of flowering plants
c. pollen grains of conifer trees
d. endospores of certain bacteria
e. spores of some marine alge
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50. Ch 36-17 human pop dynamics
(Points: 1)
A human population doubling every 50 years (Ch. 36B, Population Ecology) would be growing at a rate of almost _______ increase per year.
a. 0.1%
b. 3.5%
c. 1.5%
d. 5.5%
e. 2.5%
Explanation / Answer
Blizzards, earthquakes, floods and wildfires are examples of
b. density-independent factors regulating population size.
Most of the currently familiar domains, kingdoms and phyla of living things were already well-represented on Earth about _________ years ago.
a. 3.5 billion
Considering that humans may learn enough about life (origin of life, Ch. 16) to create living cells from abiotic materials someday, molecular biologists already know how to make all but one of these cell components in cell-free reaction mixtures
e. mitochondria
The earliest known bipedal hominoids
b. the australopithecines or similar types dating from about 3.5 MYA, including the skeleton known as "Lucy" and fossil footprints of these in East Africa.
The earliest members of the genus Homo
a. had a large brain, compared to other hominids.
Which one of these (human biological relatives, Ch. 19) is NOT an anthropoid primate?
d. living human
Among all kinds of metabolically inactive, "resting" types of cells , one of these is known to be most resistant to harsh conditions.
a. thick-walled spores of some fungi
A human population doubling every 50 years (Ch. 36B, Population Ecology) would be growing at a rate of almost _______ increase per year.
c. 1.5%
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