Biology Chapter 6 & 7

20 Questions | By Gabygarzaovalle | Last updated: Mar 22, 2022 | Total Attempts: 82

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1.

Glycolysis takes place
- A.
  
  In the cytosol
- B.
  
  In the mitochondria
- C.
  
  Only if oxygen is present
- D.
  
  Only if oxyggen is absent
2.

During glycolysis, glucose is
- A.
  
  Produced from two molecules of pyruvic acid
- B.
  
  Converted into two molecules of ATP
- C.
  
  Partially broken down and some of its stored energy is released
- D.
  
  Partially broken down and its stored energy is increased
3.

Both lactic acid fermentation and alcoholic fermentation produce
- A.
  
  A two- carbon molecule from a six- carbon molecules
- B.
  
  CO2 from a three- carbon molecule
- C.
  
  ATP from ADP and phosphate
- D.
  
  NAD+ from NADH and H+
4.

The efficiency of glycolysis is approximately
- A.
  
  0.2%
- B.
  
  2%
- C.
  
  20%
- D.
  
  200%
5.

The anaerobic pathways provide enough energy to meet all of the energy needs of
- A.
  
  All organisms
- B.
  
  All unicellular and most multicellular organisms
- C.
  
  Many unicellular and some multicellular organisms
- D.
  
  No organisms
6.

The breakdown product of glucose that difuses into the mitochondrial matrix for further breakdown is
- A.
  
  Acetyl CoA
- B.
  
  Pyruvic acid
- C.
  
  Oxaloacetic acid
- D.
  
  Citric acid
7.

The starting substance of the kreb's cycle, which is regenerated at the end of the cycle, is
- A.
  
  Acetyl CoA
- B.
  
  Pyruvic acid
- C.
  
  Oxaloacetic acid
- D.
  
  Citric acid
8.

The Krebs cycle
- A.
  
  Produces two molecules of CO2
- B.
  
  Produces a six carbon molecule from six molecules of CO2
- C.
  
  Produces NAD+ from NADH and H+
- D.
  
  Generates most of the ATP produced in aerobic respiration
9.

The electron transport chain of aerobic respiration
- A.
  
  Generates O2 from H2O
- B.
  
  Produces NADH by chemiosmosis
- C.
  
  Pumps electrons into the mitochondrial matrix
- D.
  
  Pumps protons into the space between the inner and outer mitochondrial membranes
10.

The maximum efficiency of aerobic respiration is approximately
- A.
  
  0.39%
- B.
  
  3.9%
- C.
  
  39%
- D.
  
  390%
11.

Chlorophyll a
- A.
  
  Absorbs mostly orange- red and blue- violet light
- B.
  
  Absorbs mostly green light
- C.
  
  Is an accessory pigment
- D.
  
  Is responsible for the red color of many autumn leaves
12.

The photosystem and electron transport chains are located in the
- A.
  
  Outer chloroplast membrane
- B.
  
  Inner chloroplast membrane
- C.
  
  Thylakoid membrane
- D.
  
  Stroma
13.

Both photosystem I and photosystem II
- A.
  
  Receive electrons from other photosystems
- B.
  
  Donate electrons to a transport chain that generates NADPH
- C.
  
  Donate protons to each other
- D.
  
  Contain chlorophyll a molecules
14.

Water participates directly in the light reactions of photosynthesis by
- A.
  
  Donating electrons to NADPH
- B.
  
  Donating electrons to photosystem II
- C.
  
  Accepting electrons from the electron transport chains
- D.
  
  Accepting electrons from ADP
15.

The energy that is used to establish the proton gradient across the thylakoid membrane comes from the
- A.
  
  Synthesis of ATP
- B.
  
  Synthesis of NADPH
- C.
  
  Passage of electrons along the electron transport chain of photosystem II
- D.
  
  Splitting of water
16.

The Calving cycle begins when CO2 combines with a five carbon carbohydrate called
- A.
  
  RuBP
- B.
  
  PGA
- C.
  
  3- G3P
- D.
  
  NADPH
17.

For every three molecules of CO2 that enter the calvin cycle, the cycle produces six molecules
- A.
  
  RuBP
- B.
  
  ATP
- C.
  
  3- PGA
- D.
  
  NADPH
18.

Organic compounds that can be made from the products of the calvin cycle include
- A.
  
  Only carbohydrates
- B.
  
  Only amino acids
- C.
  
  Only lipids
- D.
  
  Carbohydrates, amino acids, and lipids
19.

C3 and C4 plants differ in terms of the number of
- A.
  
  Steps in the calvin cycle
- B.
  
  Carbon atoms in the compound that CO2 is initially incorporated into
- C.
  
  Carbon atoms in the end product of the calvin cycle
- D.
  
  ATP molecules used in the calvin cycle
20.

As light intensity increases, the rate of photosynthesis
- A.
  
  Continues to decrease
- B.
  
  Continues to increase
- C.
  
  Initially decreases and then levels off
- D.
  
  Initially increases and then levels off