BIOL 2150 FINAL EXAM QUESTIONS WITH VERIFIED
ANSWERS
Which of the following is not an assumption of Hardy-Weinberg equilibrium? - Answers -
populations must select non-random mates
All the alleles present in all individuals in a species are referred to as the ____ of that
species. - Answers - gene pool
In the life cycle of an angiosperm, double fertilization refers to - Answers - one sperm
nucleus fertilizes the egg and a second sperm nucleus combines with the two polar
nuclei
The pulmonary veins: - Answers - carry oxygenated blood from the lungs to the left
atrium
Under conditions of resting membrane potential, the inside of the cell is ____ charged
with respect to the outside, and when an action potential is generated, the inside
becomes ____ with respect to the outside of the cell. - Answers - negatively; positive
The diurnal or nocturnal behavior of animals is regulated - in a large part - by which of
the following hormones? - Answers - melatonin
In vertebrates, which endocrine organ is a part of the brain (processing sensory
information) and communicates with the rest of the endocrine system? - Answers - the
hypothalamus
Which of the following hormones is indicative of the presence of a developing embryo
and thus is the basis of home pregnancy tests? - Answers - hCG
You are studying reproduction in a species of frog. Two gametes that are diploid join to
form a viable zygote (F1). If the F1 mates with one of the parents, will there be viable
offspring? - Answers - no
Which of the following statements is true regarding polyploidy in plants? - Answers - the
formation of a polyploidy hybrid is a common mechanism of sympatric speciation in
plants
Is natural selection the same thing as evolution? - Answers - no, they are not the same
because natural selection works on individuals, whereas evolution is change in
populations
, Which of the following processes occur within Bowman's capsule? - Answers - filtration
The role of an interneuron is to: - Answers - relay information from sensory to motor
neurons
What is the correct order of events in the control of the heartbeat? - Answers - 1.
Activation of the SA node
2. Contraction of the atria
3. activation of the AV node
4. transmission of the action potential through a set of modified muscle fibers
5. contraction of the vesicles
Which of the following best describes a speices' niche? - Answers - its habitat and how
it uses available resources in that habitat
What is the evidence that human activity is causing increased atmospheric CO2 levels?
- Answers - the isotopic composition of atmospheric CO2 can be measured and shows
that CO2 being added to the air now comes from combustion of fossil fuels
Many plants are able to detect day length because they have: - Answers -
photoreceptors
How does the adaptive immune system differ from the innate immune system? -
Answers - both in having memory and in the ability to target a specific pathogen
Some bacteria in the human intestine aid in the digestion and absorption of nutrients,
while utilizing these nutrients themselves as well. This is an example of: - Answers -
mutualism
What is the predominant hypothesis for why animals only appeared in the fossil record
about 3 billion years after life originated? - Answers - animals have higher metabolisms,
and animal diversification and evolution didn't really happen until there was sufficient
oxygen in the atmosphere
Compare different types of fermentation in digestion. Which below is true? - Answers -
foregut fermenters have anaerobic bacteria
Which of the following statements is false? - Answers - after entering the uterus, sperm
must pass through the cervix in order to enter the fallopian tubes
Convergent evolution refers to: - Answers - the evolution of the same character more
than once in separate groups
An important function of myelin is to: MESSED UP ANSWER - Answers - the evolution
of the same character more than once in separate groups
ANSWERS
Which of the following is not an assumption of Hardy-Weinberg equilibrium? - Answers -
populations must select non-random mates
All the alleles present in all individuals in a species are referred to as the ____ of that
species. - Answers - gene pool
In the life cycle of an angiosperm, double fertilization refers to - Answers - one sperm
nucleus fertilizes the egg and a second sperm nucleus combines with the two polar
nuclei
The pulmonary veins: - Answers - carry oxygenated blood from the lungs to the left
atrium
Under conditions of resting membrane potential, the inside of the cell is ____ charged
with respect to the outside, and when an action potential is generated, the inside
becomes ____ with respect to the outside of the cell. - Answers - negatively; positive
The diurnal or nocturnal behavior of animals is regulated - in a large part - by which of
the following hormones? - Answers - melatonin
In vertebrates, which endocrine organ is a part of the brain (processing sensory
information) and communicates with the rest of the endocrine system? - Answers - the
hypothalamus
Which of the following hormones is indicative of the presence of a developing embryo
and thus is the basis of home pregnancy tests? - Answers - hCG
You are studying reproduction in a species of frog. Two gametes that are diploid join to
form a viable zygote (F1). If the F1 mates with one of the parents, will there be viable
offspring? - Answers - no
Which of the following statements is true regarding polyploidy in plants? - Answers - the
formation of a polyploidy hybrid is a common mechanism of sympatric speciation in
plants
Is natural selection the same thing as evolution? - Answers - no, they are not the same
because natural selection works on individuals, whereas evolution is change in
populations
, Which of the following processes occur within Bowman's capsule? - Answers - filtration
The role of an interneuron is to: - Answers - relay information from sensory to motor
neurons
What is the correct order of events in the control of the heartbeat? - Answers - 1.
Activation of the SA node
2. Contraction of the atria
3. activation of the AV node
4. transmission of the action potential through a set of modified muscle fibers
5. contraction of the vesicles
Which of the following best describes a speices' niche? - Answers - its habitat and how
it uses available resources in that habitat
What is the evidence that human activity is causing increased atmospheric CO2 levels?
- Answers - the isotopic composition of atmospheric CO2 can be measured and shows
that CO2 being added to the air now comes from combustion of fossil fuels
Many plants are able to detect day length because they have: - Answers -
photoreceptors
How does the adaptive immune system differ from the innate immune system? -
Answers - both in having memory and in the ability to target a specific pathogen
Some bacteria in the human intestine aid in the digestion and absorption of nutrients,
while utilizing these nutrients themselves as well. This is an example of: - Answers -
mutualism
What is the predominant hypothesis for why animals only appeared in the fossil record
about 3 billion years after life originated? - Answers - animals have higher metabolisms,
and animal diversification and evolution didn't really happen until there was sufficient
oxygen in the atmosphere
Compare different types of fermentation in digestion. Which below is true? - Answers -
foregut fermenters have anaerobic bacteria
Which of the following statements is false? - Answers - after entering the uterus, sperm
must pass through the cervix in order to enter the fallopian tubes
Convergent evolution refers to: - Answers - the evolution of the same character more
than once in separate groups
An important function of myelin is to: MESSED UP ANSWER - Answers - the evolution
of the same character more than once in separate groups
