Question 1

In the history of Earth and in the evolution of living cells, two self-replicating molecules have formed: DNA and RNA. Determine whether each of the following characteristics can be attributed to DNA or RNA. Answers may be used more than once.
A) both DNA and RNA
B) DNA
C) RNA
-more stable of the two molecules

Accepted Answer

The answer of In the history of Earth and in...

Question 2

The best-known extinction during which all dinosaurs died out completely occurred during the ________ time period.

Accepted Answer

The answer of The best-known extinction during which all dinosaurs...

Question 3

The early embryos of vertebrates follow the same pathway of development; one structure that all vertebrate embryos have in common is the ________, which serves as a primitive support structure.

Accepted Answer

The answer of The early embryos of vertebrates follow the...

Question 4

In the history of Earth and in the evolution of living cells, two self-replicating molecules have formed: DNA and RNA. Determine whether each of the following characteristics can be attributed to DNA or RNA. Answers may be used more than once.
A) both DNA and RNA
B) DNA
C) RNA
-first molecule to evolve

Accepted Answer

The answer of In the history of Earth and in...

Question 5

Movement of individuals into or out of population that results in a redistribution of alleles is called ________.

Accepted Answer

The answer of Movement of individuals into or out of...

Question 6

The continents were once joined in one interconnected landmass called Pangaea, but moved slowly into their current positions. The process by which the continental (tectonic) plates moved slowly over time is called ________.

Accepted Answer

The answer of The continents were once joined in one...

Question 7

Darwin's proposal that organisms that are better suited to their environment are more likely to survive and reproduce is termed ________.

Accepted Answer

The answer of Darwin's proposal that organisms that are better...

Question 8

In the history of Earth and in the evolution of living cells, two self-replicating molecules have formed: DNA and RNA. Determine whether each of the following characteristics can be attributed to DNA or RNA. Answers may be used more than once.
A) both DNA and RNA
B) DNA
C) RNA
-molecule that directs production of proteins in modern cells

Accepted Answer

The answer of In the history of Earth and in...

Question 9

In the history of Earth and in the evolution of living cells, two self-replicating molecules have formed: DNA and RNA. Determine whether each of the following characteristics can be attributed to DNA or RNA. Answers may be used more than once.
A) both DNA and RNA
B) DNA
C) RNA
-the self-replicating molecule of present-day cells

Accepted Answer

The answer of In the history of Earth and in...

Question 10

In an evolutionary context, ________ structures do not currently have a function in present-day organisms.

Accepted Answer

The answer of In an evolutionary context, ________ structures do...

Question 11

Match each stage in the evolution of humans to its description.
-first in the human line to use tools; had a diet that included meat instead of a vegetarian diet

Accepted Answer

Homo habilis is known as the first in the human line to use tools and had a diet that included meat, marking a shift from a primarily vegetarian diet.

Question 12

When considering evolution, structures of present-day organisms that have the same function but did not develop from the same ancestral structure are said to be ________.

Accepted Answer

The answer of When considering evolution, structures of present-day organisms...

Question 13

Match each stage in the evolution of humans to its description.
-used a spoken language; large brain size; humanlike anatomy

Accepted Answer

Homo sapiens are known for using a spoken language, having a large brain size, and possessing humanlike anatomy.

Question 14

The first self-replicating molecule hypothesized to have formed on Earth was ________.

Accepted Answer

The answer of The first self-replicating molecule hypothesized to have...

Question 15

In the scientific process, the word ________ is reserved for those few major concepts that offer the best explanation to fit a broad range of established facts.

Accepted Answer

The answer of In the scientific process, the word ________...

Question 16

The early atmosphere of Earth did not contain the gas ________; it is believed that life as we know it would not have evolved if this gas had been present.

Accepted Answer

The answer of The early atmosphere of Earth did not...

Question 17

In the history of Earth and in the evolution of living cells, two self-replicating molecules have formed: DNA and RNA. Determine whether each of the following characteristics can be attributed to DNA or RNA. Answers may be used more than once.
A) both DNA and RNA
B) DNA
C) RNA
-molecule first formed on templates of clay in mudflats

Accepted Answer

The answer of In the history of Earth and in...

Question 18

________ refers to random changes in allele frequency as a result of chance events.

Accepted Answer

The answer of ________ refers to random changes in allele...

Question 19

The process of evolution ultimately depends on changes that occur in the ________ of organisms.

Accepted Answer

The answer of The process of evolution ultimately depends on...

Question 20

The evolution of ________ caused the death of many anaerobic organisms, and in their place evolved new aerobic organisms.

Accepted Answer

The answer of The evolution of ________ caused the death...

Quiz 22: Evolution and the Origins of Life

The best-known extinction during which all dinosaurs died out completely occurred during the ________ time period.

The early embryos of vertebrates follow the same pathway of development; one structure that all vertebrate embryos have in common is the ________, which serves as a primitive support structure.

Movement of individuals into or out of population that results in a redistribution of alleles is called ________.

The continents were once joined in one interconnected landmass called Pangaea, but moved slowly into their current positions. The process by which the continental (tectonic) plates moved slowly over time is called ________.

Darwin's proposal that organisms that are better suited to their environment are more likely to survive and reproduce is termed ________.

In an evolutionary context, ________ structures do not currently have a function in present-day organisms.

Match each stage in the evolution of humans to its description. -first in the human line to use tools; had a diet that included meat instead of a vegetarian diet

When considering evolution, structures of present-day organisms that have the same function but did not develop from the same ancestral structure are said to be ________.

Match each stage in the evolution of humans to its description. -used a spoken language; large brain size; humanlike anatomy

The first self-replicating molecule hypothesized to have formed on Earth was ________.

In the scientific process, the word ________ is reserved for those few major concepts that offer the best explanation to fit a broad range of established facts.

The early atmosphere of Earth did not contain the gas ________; it is believed that life as we know it would not have evolved if this gas had been present.

________ refers to random changes in allele frequency as a result of chance events.

The process of evolution ultimately depends on changes that occur in the ________ of organisms.

The evolution of ________ caused the death of many anaerobic organisms, and in their place evolved new aerobic organisms.