BIOL 1201 : EXAM 3

6 views5 pages

azuremammoth471

15 Mar 2019

School

Department

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

What happens if there is no oxygen present: fermentation: and alternative to most of its pathway. What about the metabolism of other food: carbohydrates, lipids, proteins. Control of respiration: combination of positive and negative feedback systems. Photosynthesis: 6co2+12h2o+light--- 6o2+c6h12o6+6h2o, convert 2 low energy molecules into a high energy molecule. Where do we get the energy for the calvin cycle from: light reactions, cyclic and non-cyclic photophosphorylation. Photosystems i and ii: antenna pigments, 200 chlorophyll a, 50 chlorophyll b, 50 other pigments, reaction center molecules, special versions of chlorophyll a (p700 or p680) Non-cyclic electron flow: h2o, photosystem 2, cytochrome complex, photosystem 1, nadph, calvin cyclic (dark reactions) Inputs: light, h2o, adp, nadp, outputs, o2, atp,nadph, h+ Cyclic electron flow: photosystem 1, cytochrome complex, cytosystem 1. What is the structure of the genome: chromosome and dna structure, dna structure, four nucleotides, complementary base pairing (hydrogen bonds, double helix, anti-parallel backbones (directionality is opposite) Dna replication involves making _________ from dna.

Related Questions

1. All of the following are correct descriptions of photosynthesis except:

A) The Calvin Cycle is endergonic.

B) Electrons are supplied to the reaction center via the splitting of water, which yields O2 as a byproduct

C) Chlorophyll and accessory pigments capture energy from the sun in the form of electrons, which they use to drive the electron transport chains of photosystems I and II.

D) ATP and NADPH generated in the light-dependent reactions are used to power CO2 fixation via the Calvin cycle in the light-independent reactions.

2. In glycolysis and the TCA cycle, glucose is _____ down to CO2; this process _____ lots of ATP and reducing power. In photosynthesis, CO2 is ______ back to sugar by the _______ of lots of ATP and reducing power.

A) reduced; requires; oxidized; production

B) oxidized; requires; reduced; production

C) oxidized; produces; reduced; input

D) reduced; produced; oxidized; input

3. Which description accurately compares cellular respiration and photosynthesis?

A) Photosynthesis uses energy captured from sunlight to power the reduction of carbon dioxide to sugars; cellular respiration oxidizes sugars to yield energy for the cell.

B) The ATP produced via cellular respiration is needed to power the reactions of photosynthesis

C) The pathways of photosynthesis are those of cellular respiration run in reverse.

D) Photosynthesis captures energy from sunlight to oxidize carbon dioxide to sugars; cellular respiration reduces these sugars to yield energy for the cell.

The complete set of reactions carried out by an organism is called:

a. anabolism

b. catabolism

c. metabolism

Value: 2

The breakdown of starch is broken down to glucose is an example of:

a. anabolism

b. catabolism

c. metabolism

Value: 3

For the following statement, determine which description best describes the process: DNA is synthesized from free nucleotides.

a. anabolism

b. catabolism

c. metabolism

Value: 4

Fill in the blank: Catabolic reactions result in the synthesis of molecules of .............via cellular respiration. This is then used to power anabolic reactions.

Value: 5

The energy in organic molecules is released in a series of steps because:

a. it is not possible to release it in a single step.

b. more total energy is released in multiple steps than would be released in a single step

c. less total energy is released in multiple steps than would be released in a single step.

d. more energy can be harvested for cellular use in multiple steps than from a single step.

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

photosynthesis

1-The light reaction of photosynthesis does not include

a. chemiosmosis

b. oxygen liberation

c. glucose synthesis

d. electron transport

Value: 2

Photosynthesis takes place in the membranes of small sacs called

a. thylakoids

b. photosystems

c. stroma

d. photons

Value: 3

During what stage of photosynthesis is O2 produced?

a. the light-dependent reactions involving photosystems I and II

b. carbon fixation

c. the Krebs cycle

d. O2 is not produced during photosynthesis

Value: 4

The pigment molecules responsible for photosynthesis are located in the

a. mitochondria

b. cytoplasm of the cell

c. stroma of the chloroplast

d. thylakoid membrane of the chloroplast

Value: 5

During what stage of photosynthesis are ATP and NADPH converted to ADP + Pi and NADP+?

a. the light-dependent reactions

b. the light-independent reactions

c. both of the above

d. none of the above

Value: 6

What energy-rich organic compound is produced as a result of the Calvin cycle?

a. ATP

b. NADPH

c. glucose

d. H2O

Value: 7

During photosynthesis, photons raise electrons to higher energy levels. These excited electrons belong to what compound?

a. water

b. ATP

c. chlorophyll

d. electron transport chain

Value: 8

Which of the following statements accurately describes the relationship between photosynthesis and cellular respiration?

a. photosynthesis occurs only in autotrophs; cellular respiration occurs only in heterotrophs

b. photosynthesis uses solar energy to convert inorganics to energy-rich organics; respiration breaks down energy-rich organics to synthesize ATP

c. photosynthesis involves the oxidation of glucose; respiration involves the reduction of CO2

d. the primary function of photosynthesis is to use solar energy to synthesize ATP; the primary function of cellular respiration is to break down ATP and release energy

1. Pyruvic acid is produced in __________, and is the starting point for __________.

a. the Krebs cycle; the electron transport chain .

b. The Prep step; Glycolysis.

c. The Krebs cycle; Glycolysis.

d. The electron transport chain; The Prep step.

e. Glycolysis; The Prep step.

2. Which process enables glycolysis to continue to run by generating needed reactants without oxygen?

a. Aerobic respiration

b. Electron transport chain

c. Krebs cycle

d. Fermentation

e. All of the above

3. When water is oxidized by green plants, what is produced?

a. oxygen

b. carbon dioxide

c. sulfur granules

d. hydrogen sulfide

4. In cyclic photophosphorylation, the electrons

a. return to chlorophyll in PS I.

b. are used to make ATP & NADPH.

c. are energized in both PSI and PSII.

d. are converted to glucose.

5. In the Calvin-benson cycle:

a. oxygen is used to synthesize sugars.

b. carbon dioxide is used to synthesize

sugars.

c. ATP is formed.

d. light is required.

6. Light dependent reaactions:

a. capture the energy of sunlight with chlorophyll in PS I & PS II

b. make ATP & NADPH using electron transport chains

c. energize electrons in both PSI & PSII

d. include both cyclic and noncyclic pathways

e. all of the above

7. The five-carbon sugars of nucleotides are

derived from either the ______ or ______.

a.pentose phosphate pathway; Entner-Doudoroff pathway

b. pentose phosphate pathway; the Krebs cycle

c. Entner-Doudoroff pathway; glycolysis

d. glycolysis; the Krebs cycle

8. The pentose phosphate pathway provides a means to break down glucose and synthesize

a. DNA

b. six-carbon sugars.

c. peptidoglycan

d. galactose.

champagnewater-buffalo279

BIOL 1201 : EXAM 3

Document Summary

Get access

Related Documents

BIOL 1201 Lecture : Photosynthesis Notes

BIOL 1201 : BIOLOGY EXAM 3 NOTES

BIOL 1201 Lecture Notes - Lecture 3: Photophosphorylation, Thylakoid, Light-Independent Reactions

Related Questions