BIOL 2021 Study Guide - Sodium Chloride, Signal Transduction, Cytoskeleton

Question 1 The membrane structures inside the chloroplast are called the ______, while the fluid surrounding the stacks of membrane is called the ______.
a. stroma; thylakoid
b. thylakoid; cytosol
c. thylakoid; stroma
d. thylakoid; matrix
e. matrix; thylakoid

Question 2 What is considered the ultimate source of energy for living things on Earth?
a. the sun
b. electrons
c. green plants
d. oxygen
e. ATP

Question 3 Why do most plant leaves appear green?
a. They contain a lot of starch which has a green color.
b. They have chloroplasts which absorb green light for photosynthesis.
c. During the light reaction phase carbon dioxide is converted to oxygen which emits green light.
d. They have chloroplasts which absorb all colors of light except for green, which is reflected.
e. During the dark reaction phase water is converted to oxygen which emits green light.

Question 4 Plants perform only photosynthesis, not respiration. True False

Question 5 What is the primary purpose of the light reactions of photosynthesis?
a. to create oxygen gas
b. to produce glucose
c. to convert solar energy to chemical energy (in the form of ATP and NADPH) to power the dark reactions
d. to remove carbon dioxide gas from the atmosphere
e. to create water

Question 6 The light dependent reactions occur in the:
a. mitochondrial membrane.
b. mitochondrial matrix.
c. stroma.
d. thylakoid membrane.
e. cytosol.

Question 7 The energy to run the dark reactions of photosynthesis is produced _________.
a. by the CO2 initially used in the dark reactions.
b. during glycolysis
c. during the light reaction phase
d. during the Krebs cycle
e. during anaerobic respiration

Question 8 Which of the following substances could be totally eliminated and not interfere with the process of photosynthesis?
a. O2
b. H2O
c. light
d. CO2

Question 9 What product(s) do plants produce during photosynthesis that is/are used by humans and other animals?
a. carbon dioxide
b. carbon dioxide and water
c. glucose and oxygen
d. glucose
e. oxygen

Question 10 Only plants can carry out photosynthesis. True False

Question 11 During the light reactions of photosynthesis, ...
a. oxygen is produced from H2O.
b. glycolysis occurs.
c. the Krebs cycle occurs.
d. CO2 is combined into glucose.
e. ATP is broken down to ADP + P

Question 12 The reactants of photosynthesis are:
a. sugar.
b. sugar and water.
c. O2 and CO2
d. O2 and sugar.
e. CO2 and water.

Question 13 During the dark reaction phase of photosynthesis in plants...
a. ATP is created.
b. H+ ions are moved into the stroma from the matrix.
c. molecules of CO2 are combined into sugar.
d. H2O is split into oxygen and H+.
e. solar energy is converted to chemical energy.

1. Carriers of the sickle-cell allele (i.e. those with a heterozygous genotype) are fittest in environments with high frequencies of:

2. Light skin is an evolutionary adaptation that evolved in our human ancestors who lived:

3. Early on in human evolution, natural selection favored dark skin closest to the equator, where sunlight and exposure to UV light is most intense.

True
False

4.

Which one of the following traits evolved first in the hominins?

5.

Scientists think the last common ancestor of African apes and humans was most likely a fully bipedal ape.

True
False

6.

Which of the following has been proposed as a possible explanation for the evolution of bipedalism?

What are the outputs of photosynthesis? Select all that apply.

A. light

B. CO2

C. O2

D. water

E. sugar ..

Question 2 Select one answer. 10 points

Energy is harvested from which reaction to produce ATP?

A. Carbon dioxide and water → sugar and oxygen.

B. Sugar and oxygen → carbon dioxide and water. ..

Question 3 Select one answer. 10 points

What is the source of energy for photosynthesis?

A. Light

B. Water

C. O2

D. CO2

E. Sugar ..

Question 4 Select one answer. 10 points

Which of the following is not produced by the process of respiration?

A. CO2

B. ATP

C. H2O

D. Sugar ..

Question 5 Select one answer. 10 points

Select the incorrect statement regarding respiration and fermentation from the list below.

A. Respiration produces much more ATP than fermentation

B. Respiration uses oxygen, fermentation does not.

C. Both respiration and fermentation use organic molecules.

D. Respiration produces acidic products, fermentation does not. ..

Question 6 Select all that apply. 10 points

What is required for photosynthesis? (Select all that apply.)

A. Oxygen

B. Carbon dioxide

C. Carbon monoxide

D. Water

E.. Glucose

F. Light

G. Heat ..

Question 7 Select one answer. 10 points

Most of the ATP of aerobic respiration is produced in which organelle in eukaryotes?

A. ribosome

B. nucleus

C. plasma membrane

D. chloroplast

E. mitochondrion ..

Question 8 Select one answer. 10 points

Plant leaves contain many different pigments. What is the purpose of having multiple pigments?

A. To give leaves different colors in the fall.

B. Capture light for photosynthesis at different wavelengths.

C. To absorb light that may harm the photosynthetic machinery. ..

Question 9 Select one answer. 10 points

Which organelle captures energy, in the form of sunlight, in plant cells?

A. chloroplast

B. nucleolus

C. mitochondrion

D. plasma membrane

E. cytoplasm ..

Question 10 Select one answer. 10 points

Where in eukaryotic cells does cellular respiration take place?

A. In the peroxisome

B. In the mitochondria.

C. In the chloroplast.

D. In the ribosome. .. Save