JOIN ADRE 2.0 Telegram Group

Photosynthesis and Respiration MCQs | Photosynthesis and Respiration Short Questions and Answers

Questions
41 The site of glycolysis in a cell is
A chloroplast
B nucleus
C cytoplasm
D mitochondria

Answer: cytoplasm
42 The annual plant exchange of gases takes place mainly through
A Leaf scars
B lenticels
C stomata
D stem

Answer: stomata
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

43 Common immediate source of energy in cellular activity:
A NAD
B ATP
C DNA
D RNA

Answer: ATP
44 In succulent xerophytes the R.Q is :
A Zero
B unity
C less than one
D more than one

Answer: Zero
45 R.Q. of fatty substances is generally:
A Unity
B Zero
C More Than One
D Less Than One

Answer: Less Than One
46 In plant cell, digestion of fats occurs with the help of
A Lysosomes
B Peroxisomes
C Glyoxisomes
D Microtubules

Answer: Glyoxisomes
47 What are the products of the light reactions that are subsequently used by the Calvin cycle?
A oxygen and carbon dioxide
B carbon dioxide and RuBP
C water and carbon
D ATP and NADPH

Answer: ATP and NADPH
48 Where does the Calvin cycle take place?
A stroma of the chloroplast
B thylakoid membrane
C cytoplasm surrounding the chloroplast
D chlorophyll molecule

Answer: stroma of the chloroplast
49 In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary?
A autotrophs and heterotrophs
B producers and primary consumers
C photosynthesizers
D autotrophs

Answer: autotrophs
50 In autotrophic bacteria, where are the enzymes located that can carry on organic synthesis?
A chloroplast membranes
B nuclear membranes
C free in the cytosol
D along the inner surface of the plasma membrane

Answer: along the inner surface of the plasma membrane
51 When oxygen is released as a result of photosynthesis, it is a by -product of which of the following?
A reducing NADP+
B splitting the water molecules
C chemiosmosis
D the electron transfer system of photosystem I

Answer: splitting the water molecules
52 A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment?
A red and yellow
B blue and violet
C green and yellow
D blue, green, and red

Answer: blue and violet
53 What did Engelmann conclude about the congregation of bacteria in the red and blue areas?
A Bacteria released excess carbon dioxide in these areas
B Bacteria congregated in these areas due to an increase in the temperature of the red and blue light
C Bacteria congregated in these areas because these areas had the most oxygen being released
D Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths

Answer: Bacteria congregated in these areas because these areas had the most oxygen being released
54 An outcome of this experiment was to help determine
A the relationship between heterotrophic and autotrophic organisms
B the relationship between wavelengths of light and the rate of aerobic respiration
C the relationship between wavelengths of light and the amount of heat released
D the relationship between wavelengths of light and the oxygen released during photosynthesis

Answer: the relationship between wavelengths of light and the oxygen released during photosynthesis
35 If you ran the same experiment without passing light through a prism, what would you predict?
A There would be no difference in results
B The bacteria would be relatively evenly distributed along the algal filaments
C The number of bacteria present would decrease due to an increase in the carbon dioxide concentration
D The number of bacteria present would increase due to an increase in the carbon dioxide concentration

Answer: The bacteria would be relatively evenly distributed along the algal filaments
56 Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?
A Green and yellow wavelengths inhibit the absorption of red and blue wavelengths
B Bright sunlight destroys photosynthetic pigments
C Oxygen given off during photosynthesis interferes with the absorption of light
D Other pigments absorb light in addition to chlorophyll a

Answer: Other pigments absorb light in addition to chlorophyll a
57 The reaction-center chlorophyll of photosystem I is known as P700 because
A there are 700 chlorophyll molecules in the center
B this pigment is best at absorbing light with a wavelength of 700 nm
C there are 700 photosystem I components to each chloroplast
D None of above

Answer: this pigment is best at absorbing light with a wavelength of 700 nm
58 Which of the following are directly associated with photosystem I?
A harvesting of light energy by ATP
B receiving electrons from plastocyanin
C P680 reaction-center chlorophyll
D extraction of hydrogen electrons from the splitting of water

Answer: receiving electrons from plastocyanin
59 As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of NADPH. Where did the extra ATP molecules come from?
A photosystem II
B photosystem I
C cyclic electron flow
D linear electron flow

Answer: cyclic electron flow
60 Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH-8 solution. What would be likely to happen?
A The isolated chloroplasts will make ATP
B The Calvin cycle will be activated
C Cyclic photophosphorylation will occur
D Only A and B will occur

Answer: The isolated chloroplasts will make ATP

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!
Advertisement
Assam Direct Recruitment Test Series