Log in
Biology
1
answer
0
watching
209
views

1. Aerobic cellular respiration can best be described as a:

a. a redox reaction to convert energy for metabolism
b. a need for oxygen in order to store energy in ATP
c. all answer choices are correct
d.

an organism's way of catabolizing glucose

2. During photosynthesis, electrons from the reaction center chlorophyll are transferred to the electron transport system. These electrons are replaced by the splitting of __________ molecules.

a. glucose
b. carbon dioxide
c. water

d. ATP

3.

During glycolysis:

a. a glucose molecule is broken down into two pyruvate molecules.
b. a glucose molecule is formed from carbon dioxide that is fixed by Rubisco.
c. the energy from electrons forms a proton gradient that is used to synthesize ATP.
d. the electrons in acetyl-CoA are transferred to electron carriers.

4.

Bacterial cells reproduce through the process of:

a. cytokinesis
b. meiosis
c. mitosis
d.

binary fission

5.

Cytokinesis refers to the:

a. formation of two new nuclei during telophase.
b. splitting of the centromere to separate the sister chromatids.
c. division of the cytoplasm to produce two daughter cells.
d. division of the genetic material into two daughter cells.

Watch
1
answer
0
watching
209
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Hubert Koch
Hubert KochLv2
28 Sep 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

1. Plants need which of the following to carry on photosynthesis?

a. H2O

b. CO2

c. O2

d. both O2 and CO2

e. both H2O and CO2

2. Organisms that derive their chemical energy either from the process of chemosynthesis or photosynthesis are classified as

a. autotrophs.

b. parasites.

c. heterotrophs.

d. saprophytes.

e. mutualists.

3. The carbon source for organisms that derive their energy from photosynthesis is

a. carbon monoxide.

b. carbon dioxide.

c. hydrocarbons.

d. methane.

e. glucose.

4. The oxygen released in photosynthesis comes from

a. carbon dioxide.

b. glucose.

c. ribulose bisphosphate.

d. water.

5. When chlorophyll a molecules absorb energy, the molecules

a. release electrons.

b. release X-rays.

c. release energy.

d. release electrons and X-rays.

e. release electrons and energy.

6. The flow of what particle across the thylakoid membrane powers the production of ATP?

a. electrons

b. hydrogen ions

c. oxygen

d. carbon dioxide

e. phosphate ions 2

7. The light-independent reactions were discovered by

a. M. D. Hatch.

b. Andrew Benson.

c. Melvin Calvin.

d. Robert Hill.

e. both Andrew Benson and Melvin Calvin.

8. For each six atoms of carbon dioxide fixed in the light-independent reactions, how many molecules of PGAL (phosphoglyceraldehyde) are produced?

a. 2

b. 3

c. 6

d. 12

e. 15

Chapter 7

9. The ultimate source of energy for living things is

a. the Krebs cycle.

b. fossil fuels.

c. the sun.

d. glycolysis.

e. aerobic respiration.

10. When molecules are broken apart in respiration

a. the heat produced is used to drive biological reactions.

b. the oxygen in the compounds that are broken apart is used as an energy source.

c. the energy released in respiration is channeled into molecules of ATP.

d. ATP is converted into ADP.

e. ADP is released as a waste product.

11. ATP

a. can be produced by photosynthesis.

b. is produced in the degradation of organic compounds such as glucose.

c. is generated in anaerobic respiration.

d. is released in aerobic respiration.

e. all of these

12. Which part of the energy-releasing pathway can convert all carbon that enters to carbon dioxide?

a. fermentation

b. glycolysis

c. Krebs cycle

d. electron transport

e. phosphorylation

13. Which liberates the most energy in the form of ATP?

a. aerobic respiration

b. anaerobic respiration

c. alcoholic fermentation

d. lactate fermentation

e. All liberate the same amount, but through different means.

14. Aerobes use ________ as the final electron acceptor in electron transport phosphorylation.

a. hydrogen

b. carbon

c. oxygen

d. H2O 3

15. Glycolysis depends on a continuous supply of

a. NADP.

b. pyruvate.

c. NAD+.

d. NADH.

e. H2O.

16. Glycolysis

a. occurs in the mitochondria.

b. results in the production of pyruvate.

c. occurs in the cytoplasm.

d. occurs in the mitochondria and results in the production of pyruvate.

e. results in the production of pyruvate and occurs in the cytoplasm.

17. The end product(s) of glycolysis is(are)

a. acetyl CoA.

b. carbon dioxide.

c. pyruvate.

d. glucose.

e. glucose and carbon dioxide.

18. Which is capable of being reduced during both glycolysis and the Krebs cycle?

a. NAD+

b. FAD+

c. ADP

d. NADH

e. NADP+

19. The Krebs cycle takes place in the

a. ribosomes.

b. cytoplasm.

c. nucleus.

d. mitochondria.

e. chloroplasts.

20. The breakdown of pyruvate in the Krebs cycle results in the release of

a. energy.

b. carbon dioxide.

c. oxygen.

d. energy and oxygen.

e. energy and carbon dioxide.

The Delta G° for the complete in vitro combustion of glucose to CO2 and H2O id -2973 kJ/mol. The Delta G for hydrolysis of one ATP molecule in the cell (at a realistic intracellular concentration of 5mM) is considered to be -50 kJ/mol. Use these two values to answer the following questions.

a) How many ATP are produced in cells during complete oxidation of one glucose molecule under aerobic conditions, including oxidative phosphorylation? Justify your answer.

b) What is the total energy (in kiloJoules) of these ATP molecules formed under aerobic conditions? [Hint: use your answer from part a) and make the calculation!] What fraction of the total energy in the original glucose molecule is transferred to ATP? Show your work.

c) How many ATP are produced from that glucose molecule under anaerobic conditions? What is the total energy (in kiloJoules) in these ATP molecules? What fraction of the total energy in glucose is transferred to ATP? Compare the amount of energy converted to the values you calculated in parts a) and b) above. Show all work and justify your answers.

d) What happens to the rest of the energy in that glucose original molecule?

1) The complete catabolism of glucose results in the generation of ___________ ATP.

1.

29
2.

100
3.

20
4.

50

2) The presence of _____________________ is a determinant factor on whether pyruvate continues its metabolism into the Krebs cycle.

3) As humans we breath in air that contains oxygen and breath out carbon dioxide . The oxygen we consume it is used in the metabolism of glucose in the ________________________.

1.

electron transport chain as an acceptor of electrons
2.

anaerobic respiration
3.

citric acid cycle

4.conversion of pyruvate to acetyl-CoA

4) A glucose molecule can generate energy, but only if sufficient amount of energy is invested to initiate the chemical reactions that are involved in the catabolism of the glucose molecule.

True

False

5) The ___________________ of glycogen from individual/separate molecults of glucose is an ___________________ reaction.

1.

breakdown, endergonic
2.

breakdown, exergonic
3.

synthesis, endergonic
4.

synthesis, exergonic

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in