BIOL 1201 Lecture Notes - Lecture 11: Photosystem I, Photosystem Ii, Dna Ligase

50 views11 pages

redwolf687

23 Feb 2016

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Doesn"t occur in all organisms but it impacts all organisms at some point. Convert two low energy molecules into a high energy molecule. Reactions are largely endergonic; light is the required energy. Note: you start with diferent water molecules than what water is produced in the end. Two stage process: capture the light energy in chemical energy (light reactions, use the chemical energy to convert co2 into glucose (dark reactions or calvin cycle, linked together by atp and nadph+ Individual thylakoid membranes discs of membranes: green pigments are found in the thylakoids. Stroma is the liquid portion of the chloroplast. Calvin cycle: inputs: carbon dioxide (joins to intermediate into cycle), atp and nadph + H: outputs: g3p glyceraldehyde 3-phosphate, adp, and nadp+ Energy to drive dark reactions from energy of light reactions: light reactions come in two forms: Add phosphate to an adp to make atp. Using light to add a phosphate to adp.

Related Questions

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

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.

coffeelion96

1. Write the overall equation for the BALANCED aerobic cellular respiration reaction. Write the chemical (molecular) formulas AND names of the molecules. Label the reaction as endergonic or exergonic. Label products and reactants and state in which process(es) each product or reactant comes into play (Glycolysis, Krebs, ETC)

2. Write the overall equation for the BALANCED photosynthesis reaction. Write the chemical formulas AND names of the molecules. Label the reaction as endergonic or exergonic. Label products and reactants and state in which process(es) each product or reactant comes into play (light reactions, Calvin cycle).

3. Explain how the products and reactants of cellular respiration are related to the products and reactants of photosynthesis. Be specific. Explain why plants must do both reactions and people do not.

4. Why is cellular respiration essential to life?

5. Why is photosynthesis essential to ALL life â not just plant life? Think of two big reasons!

6. How is photophosphorylation (not photosynthesis) similar and different than oxidative phosphorylation? Write a compare and contrast answer. You must have at least 2 similarities and 2 differences. This must be written as a paragraph and not a list. When you state a difference for one, give how the other is different too!

7. An electron transport chain (ETC) chain is essential for cellular respiration. What is the function of the ETC in cellular respiration? Draw a diagram illustrating the ETC in cellular respiration.

8. An ETC chain connects PSII and PSI. What is the function of electron flow from PSII to PSI? Draw the Z-scheme illustrating the ETC in photosynthesis.

9. The inner membrane of a mitochondrion has lots of folds, or cristae, giving it lots of surface area for electron transport chains. Suppose the inner membrane was smooth instead, how would this affect cellular respiration?

10. The chloroplast has a couple of different spaces â the lumen of the thylakoid and the stroma. Explain why it is essential to have these spaces separated by membranes.

BIOL 1201 Lecture Notes - Lecture 11: Photosystem I, Photosystem Ii, Dna Ligase

Document Summary

Get access

Related Documents

BIOL 1201 Lecture Notes - Lecture 1: Prokaryote, Tata Box, Primase

BIOL 1201 Lecture Notes - Lecture 1: Primase, Ribosome, Ribose

BIOL 1201 Study Guide - Midterm Guide: Photosystem I, Photosystem Ii, Dna Ligase

Related Questions