BIOLOGY 2150 EXAM 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. Humans and chimpanzees last shared a common
ancestor around ____________ million years ago, and our
genomes now differ by about ____________%.
(Chapter 24 lecture 5)
Answer:
5-7; 1
Question:
2. Genetic sequence data from mitochondrial and Y
chromosome DNA agree that the human family is
____________ and it arose ____________.
(Chapter 24 lecture 5)
Answer:
young; in Africa
Question:
3. Culture
(Chapter 24 lecture 5)
Answer:
A body of learned behavior that is socially transmitted among individuals and
passed down from one generation to the next
Question:
4. All evidence suggests that the Neanderthals did not
interbreed with our ancestors.
(Chapter 24 lecture 5)
Answer:
False
Question:
5. Neoteny
(Chapter 24 lecture 5)
Answer:
The evolutionary process in which the timing of development is altered so that a
sexually mature organism retains the physical characteristics of the juvenile form
,Question:
6. The shift to bipedalism required changes to the
architecture of which of the following?
(Chapter 24 lecture 5)
Answer:
pelvis
spine
legs
skull
Question:
7. If the multiregional hypothesis of human origins is
correct, modern human populations last shared a
common ancestor around two million years ago. If the
out-of-Africa hypothesis is correct, we last shared a
common ancestor around ____________ years ago.
(Chapter 24 lecture 5)
Answer:
200,000
Question:
8. When Rebecca Cann decided to research on the
evolution of humans, she chose to study mitochondrial
DNA. Which of the following explains why she chose this
type of DNA?
(Chapter 24 lecture 5)
Answer:
because mitochondrial DNA is more abundant and therefore easier to extract
Question:
9. Which of the following groups is monophyletic?
(Chapter 24 lecture 5)
Answer:
Old world monkey and apes
Question:
10. In addition to the shift to bipedalism, what major trend or
trends do we see in hominin evolution as we look across
our entire fossil record? Select all that apply.
(Chapter 24 lecture 5)
Answer:
Increase in body size
Increase in brain size
, Question:
11. In the northern and southern hemispheres, the rate of
photosynthesis is ____________ in the summer and ____________ in
the winter.
(Chapter 25 Lecture 6)
Answer:
highest; lowest
Question:
12. The Keeling curve in Figure 25.1 shows that while CO2
levels oscillate on an annual basis, overall CO2 levels
increase from year to year.
Why has this trend continued in the last 50 years?
(Chapter 25 Lecture 6)
Answer:
combustion of fossil fuels
Question:
13. True or false: CO2 is considered a greenhouse gas
because it traps heat emitted from Earth's surface in the
atmosphere, affecting global temperatures.
(Chapter 25 Lecture 6)
Answer:
True
Question:
14. Photosynthesis ____________ the atmosphere while respiration
____________ the atmosphere.
(Chapter 25 Lecture 6)
Answer:
removes CO2 from; introduces CO2 to
Question:
15. Over the last several decades, what have researchers
discovered about atmospheric CO2 levels?
(Chapter 25 Lecture 6)
Answer:
They have collectively increased
QUESTIONS AND CORRECT ANSWERS
Question:
1. Humans and chimpanzees last shared a common
ancestor around ____________ million years ago, and our
genomes now differ by about ____________%.
(Chapter 24 lecture 5)
Answer:
5-7; 1
Question:
2. Genetic sequence data from mitochondrial and Y
chromosome DNA agree that the human family is
____________ and it arose ____________.
(Chapter 24 lecture 5)
Answer:
young; in Africa
Question:
3. Culture
(Chapter 24 lecture 5)
Answer:
A body of learned behavior that is socially transmitted among individuals and
passed down from one generation to the next
Question:
4. All evidence suggests that the Neanderthals did not
interbreed with our ancestors.
(Chapter 24 lecture 5)
Answer:
False
Question:
5. Neoteny
(Chapter 24 lecture 5)
Answer:
The evolutionary process in which the timing of development is altered so that a
sexually mature organism retains the physical characteristics of the juvenile form
,Question:
6. The shift to bipedalism required changes to the
architecture of which of the following?
(Chapter 24 lecture 5)
Answer:
pelvis
spine
legs
skull
Question:
7. If the multiregional hypothesis of human origins is
correct, modern human populations last shared a
common ancestor around two million years ago. If the
out-of-Africa hypothesis is correct, we last shared a
common ancestor around ____________ years ago.
(Chapter 24 lecture 5)
Answer:
200,000
Question:
8. When Rebecca Cann decided to research on the
evolution of humans, she chose to study mitochondrial
DNA. Which of the following explains why she chose this
type of DNA?
(Chapter 24 lecture 5)
Answer:
because mitochondrial DNA is more abundant and therefore easier to extract
Question:
9. Which of the following groups is monophyletic?
(Chapter 24 lecture 5)
Answer:
Old world monkey and apes
Question:
10. In addition to the shift to bipedalism, what major trend or
trends do we see in hominin evolution as we look across
our entire fossil record? Select all that apply.
(Chapter 24 lecture 5)
Answer:
Increase in body size
Increase in brain size
, Question:
11. In the northern and southern hemispheres, the rate of
photosynthesis is ____________ in the summer and ____________ in
the winter.
(Chapter 25 Lecture 6)
Answer:
highest; lowest
Question:
12. The Keeling curve in Figure 25.1 shows that while CO2
levels oscillate on an annual basis, overall CO2 levels
increase from year to year.
Why has this trend continued in the last 50 years?
(Chapter 25 Lecture 6)
Answer:
combustion of fossil fuels
Question:
13. True or false: CO2 is considered a greenhouse gas
because it traps heat emitted from Earth's surface in the
atmosphere, affecting global temperatures.
(Chapter 25 Lecture 6)
Answer:
True
Question:
14. Photosynthesis ____________ the atmosphere while respiration
____________ the atmosphere.
(Chapter 25 Lecture 6)
Answer:
removes CO2 from; introduces CO2 to
Question:
15. Over the last several decades, what have researchers
discovered about atmospheric CO2 levels?
(Chapter 25 Lecture 6)
Answer:
They have collectively increased
