On the diagram below, please draw NADPH and NADP entering and leaving the ETC of the photosystems, as well as ADP +P, and ATP in their correct locations for use.
Question 12
12.
a)The experiment below is set up to measure the rate of photosynthesis. The flask are spinach chads (the gray disks) and sodim bicarbonate (the white dots). There is a light shining on the flask (you just can't see it 😄 )
Volumetric measurements are taken by reading the syringe to show the volume of gas that is changing.
In a BRIEF paragraph, answer the following questions.It could be based on a lab you viewed, or another version, as long as it uses this set-up.
a) describe the independent and dependent variables that COULD be recorded using this set up.
b) using the variables you indicated in part a, describe what would be a good positive control group.
Which of the following statements correctly summarizes a redox reaction that occurs in photosynthesis?
CO2 is oxidized to form glucose.
CO2 is reduced to form glucose.
Water is reduced to form O2.
O2 is oxidized to form water.
Glucose is oxidized to form CO2.
Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet they are able to survive. Which of the following experimental approaches would be a reasonable way to detect the lack of photosystem II in these organisms?
Test whether they fix CO2 in the dark.
Determine if they have thylakoid membranes in the chloroplas
Test the action spectrum for photosynthesis.
Test whether they release O2 in the light.
The figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Halobacterium has a photosynthetic membrane that appears purple. Its photosynthetic action spectrum is the inverse of the action spectrum for green plants. (That is, the Halobacterium action spectrum has a peak where the green plant action spectrum has a trough.) What wavelengths of light do the Halobacterium photosynthetic pigments absorb?
green and yellow
blue, green, and red
red and green
blue and red
red and yellow
Which of the following statements correctly describes a reaction associated with photosystem II?
Electrons are passed from the P680 chlorophyll to oxygen (O2).
Light energy excites electrons in the thylakoid membrane electron transport chain.
The P680 chlorophyll donates a pair of electrons directly to NADP+, producing NADPH.
Electrons released from the P680 chlorophyll are replaced by electrons derived from water.
In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix. In what direction do protons flow during chemiosmosis in chloroplasts?
from the thylakoid space to into the stroma
from the stroma into the thylakoid space
from the stroma into the cytosol
from the matrix into the stroma
from the intermembrane space into the stroma
Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He found that the largest groups were found in the areas illuminated by the red and blue light. This experiment helped to determine the relationship between which of the following parameters?
wavelengths of light and the rate of aerobic respiration
heterotrophic and autotrophic organisms
wavelengths of light and the rate of photosynthesis
the concentration of carbon dioxide and the rate of photosynthesis
wavelengths of light and the amount of heat released
What is the primary function of the Calvin cycle?
to regenerate ATP for use in the light reactions of photosynthesis
to produce simple sugars from carbon dioxide
to produce carbon dioxide for use in the light reactions of photosynthesis
to produce oxygen by oxidizing water
If plants are grown in the light with CO2 containing a radioactive isotope of oxygen (18O), subsequent analysis will show that 18O incorporated in organic molecules first appears in
the thylakoid space.
mitochondria.
the stroma.
the thylakoid membranes.
The NADPH required for the Calvin cycle is produced by which of the following metabolic reactions?
glycolysis
reactions initiated in photosystem II
the citric acid cycle
reactions initiated in photosystem I
oxidative phosphorylation
Which of the following best describes how oxygen gas is produced during photosynthesis?
Oxygen gas is produced by the fixation of carbon dioxide by rubisco during the Calvin Cycle
Oxygen gas is produced by a condensation reaction when G3P molecules are combined to make other organic molecules
Oxygen gas is produced by the hydrolysis of water by Photosystem II
Oxygen gas is produced by the hydrolysis of ATP and NADPH during the Calvin Cycle