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Module 2-BSC2010L

BSC2010L- photosynthesis, enzymes, & cellular respiration

QuestionAnswer
What is photosynthesis? (Check all that apply). the conversion of sunlight energy into chemical energy the process by which plants, some bacteria, and some protist use the energy from sunlight to produce sugar
The organelle where photosynthesis occurs is the chloroplast
The reactants of photosynthesis are water and carbon dioxide
The products of photosynthesis are glucose and oxygen
Photosynthesis is divided into two major steps, light dependent reactions and light independent reactions
Which of the following is NOT a product of the light reaction? carbon dioxide
All of the following are required for the Calvin cycle except H2O
Different photosynthetic pigments from a plant pigment extract can be separated by paper chromatography
Which way do the chlorophyll bands move on the chromatography paper? up the chromatography paper
Of the visible light spectrum, the rate of photosynthesis is worst under green light
How do the products of glycolysis and the Krebs cycle relate to the electron transport chain? Glycolysis and the Krebs cycle produce the molecules that shuttle electrons to the electron transport chain
Why is cellular respiration important? It generates ATP, which cells can use to do work
Oxygen is a product of the electron transport chain. False
The first stage of cellular respiration, called ___________, takes place in the cytoplasm of the cell and needs no oxygen. glycolysis
A process common to all living organisms, whether aerobic or anaerobic, is glycolysis
In the yeast fermentation experiment, what is being produced to cause the air bubble at the top of the tube to increase over time? CO2
In muscle cells, fermentation produces not alcohol but lactic acid
In the yeast fermentation experiment, what is being produced to cause the air bubble at the top of the tube to increase over time? CO2
Fructose can be used as a substrate in yeast fermentation. True
During the experiment measuring energy production in plants, the highest rate of cellular respiration occurred in the tube containing germinating seeds
What are enzymes? Enzymes are proteins
Binding to an enzyme's active site Which of the following binds to the active site of an enzyme? substrate
The two data curves on the figure illustrate that temperature ranges are not the same for all enzyme activity
The primary function of an enzyme or any biological catalyst is to reduce the energy of activation and increase the rate of a reaction
Consider the biochemical pathway below, where A, B, and C are substrates and products and E1 and E2 are the enzymes that catalyze the reactions. If Enzyme 1 (E1) is inactive, which of the following compounds will accumulate? A ---E1-->B---E2-->C A only
As the amount of substrate is increased in an enzyme-substrate reaction, the amount of product increases
Enzyme activity can be determined in the following ways: by measuring how much of the substrate is consumed by measuring how much of the product is produced
Human catalase has an optimum temperature of 37oC. Increasing the temperature by 30 degrees above the optimum range will (Select all that apply) denature the enzyme cause an abrupt decrease in the rate of activity
Which of the following best describe what enzymes are and how they are used? catalytic proteins that are efficient in initiating chemical reactions by lowering the activation energy
The substrate binds at the enzyme's active site
Chlorophyll a is blue-green
Chlorophyll b is yellow-green
Carotene are Orange
Xanthophyll's are yellow
What does chromatography solvent do? it dissolves pigment and allows for separation. The solvent then moves up to paper and the pigment is carried and separated.
Why does Chlorophyll b appear yellow-green? it reflects light in those wave lengths and absorbs violet and red.
Why do different photosynthetic pigments migrate to different points on the chromatography paper? the pigments differ in thier solubility and affinity for the paper.
What happens during cellular respiration? glucose and oxygen is broken down to make ATP, CO2 and water. Stages: glycolysis, pyruvate oxidation, the citric acid or Krebs cycle.
What happens during photosynthesis? six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products. CO2 is consumed and turned to oxygen.
Created by: Jen2pen
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