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BIOL 2083 Chapter : Chapter 22 Resources

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azuremammoth471
15 Mar 2019
School
LSU
Department
Biological Sciences
Course
BIOL 2083
Professor
All

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Document Summary

Accessory pigments: plant pigments other than chlorophyll that play a role in photosynthesis. Calvin cycle: the pathway of carbon dioxide fixation in photosynthesis. Chlorophyll: the principal photosynthetic pigment responsible for trapping light energy from the. Chloroplast: the organelle that is the site of photosynthesis in green plants. Grana: bodies within the chloroplast that contain the thylakoid disks, the site of photosynthesis. Pheophytin: a photosynthetic pigment that differs from chlorophyll only in having two hydrogens in place of magnesium. Photophosphorylation: the synthesis of atp coupled to photosynthesis. Photorespiration: the process by which plants oxidize carbohydrates aerobically in the light. Photosynthesis: the process of using light energy from the sun to drive the synthesis of carbohydrates. Photosynthetic unit: the assemblage of chlorophylls that includes light-harvesting molecules and the special pair that actually carry out the reaction. Photosystem i: the portion of the photosynthetic apparatus responsible for the production of.

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Related Questions

Plants are net ____ consumers and _____ producers.

TRUE or FALSE: During photosynthesis, glucose is made during the light-independent (dark) reactions.

TRUE or FALSE: The products of photosynthesis are carbon dioxide and water.

What is the main product of photosynthesis?

What is the energy source for the process of photosynthesis?

In what organelle does photosynthesis occur?

TRUE or FALSE: All organisms’ lives depend of photosynthesis.

Animals are net ___ consumers and net ____producers.

What are discrete packets of kinetic energy in light?

Give two examples of accessory pigments for photosynthesis.

TRUE or FALSE: The primary photosynthetic pigment chlorophyll a.

What is the empirical formula for glucose?

During glycolysis, molecules of glucose are broken down into ___ molecules of _____.

Which comes first: glycolysis, kreb cycle, or electron transport chain?

Where in the cell does glycolysis occur?

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.

Photosynthesis Lab Report

  1. Plant Structure and Function

  1. Through the process called __________ plants convert lightenergy into

__________ energy. Record your answerbelow.

  1. In which structure of the plant does photosynthesis occur?

  1. What is the difference between xylem and phloem?

  1. Based on lab, Exercise 1, what is the name and function of thestructure labeled with the letter “H”?

  1. Chloroplast
  1. Based on Lab, Exercise 2, draw and label each part of thechloroplast. Sign, date and prepare an image of your drawing andinclude it with this lab report.

  1. What part of the process of photosynthesis occurs in thethylakoid compartment?

  1. What is the name and function of the structure labeled with theletter “E” in Exercise 2?

  1. Photosynthetic Products

  1. What are the three products of photosynthesis?

  1. What happens to the glucose that is not metabolizedimmediately?

  1. In the test for starch, which tube demonstrated a positive testfor starch? How do you know?

  1. Based on Lab, Exercise 3 explain why part of the leaf was amberin color.

  1. Light Absorption
  1. What pigment is used by plants to absorb light?

  1. In the video demonstration in Exercise 4 what happens to thelight spectrum when a green filter is placed in front of the lightsource?

  1. In step 3 of Exercise 4, which color was not absorbed by thespinach pigments?

  1. Photosynthetic Pigments
  1. What process is used in Exercise 5 to separate the plantpigments?

  1. Look at the chromatogram results in Exercise 5. What color isreflected by chlorophyll a?
  1. Which pigment reflected an orange color?

VI. Effect of Light and Temperature onPhotosynthesis

  1. What was the conclusion of Blackman’s first experiment on theeffect of light on photosynthesis?
  1. In his second experiment, what effect did increasingtemperature have on the rate of photosynthesis?

  1. Record the data from Exercise 6 below.

Lamp Distance

Temperature

Ave Bubble/min

75 cm

50 cm

25 cm

  1. In the experiment in Exercise 6, what conclusion can be drawnabout the effect of light and temperature on rate ofphotosynthesis?

Summary Questions

  1. Why do heterotrophs depend on autotrophs?

  1. Name two reactants necessary for photosynthesis to occur.

  1. How would the process of photosynthesis be affected if a planthad no stomata?
  1. What tool is used to separate white light into differentwavelengths of color?

  1. Explain why we see the color green on the leaves ofplants.

  1. What color is absorbed the least by the petals on asunflower?

  1. Photosynthesis consists of two phases. Which phase would beleast affected by living in an area where there are shorter daysand long periods of darkness?

  1. How could air pollution affect food production and the priceyou pay for food at the supermarket?