Tag: photosynthesis

Quizzes (18) Questions (162)

Questions Related to photosynthesis

Multiple choice botany photosynthesis action spectrum and absorption spectrum spectrum of electromagnetic radiation chloroplast and pigments of photosynthesis

What is the name of scientist who showed that sunlight is essential for photosynthesis?

  1. Jan Ingenhousz

  2. Joseph Priestley

  3. Robert Hook

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Jan Ingen-Housz showed that sunlight is essential for photosynthesis. He concluded that green plants purify the air in presence of sunlight. Thus, option A is the correct answer.

Multiple choice botany photosynthesis action spectrum and absorption spectrum spectrum of electromagnetic radiation chloroplast and pigments of photosynthesis

Electromagnetic radiation with wavelengths between 0.4 and 0.7 micrometers is called:

  1. Ultraviolet light

  2. Visible light

  3. Infrared light

  4. Microwaves
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The visible spectrum of electromagnetic radiation ranges from approximately 0.4 micrometers (violet) to 0.7 micrometers (red).

Multiple choice botany photosynthesis action spectrum and absorption spectrum spectrum of electromagnetic radiation chloroplast and pigments of photosynthesis

If the oxygen of $CO _2$ is radiolabelled and provided to the plant, then which of the following will show radioactivity in the cells exposed to sunlight?

  1. Hexose
  2. $H _2O$
  3. $O _2$

  4. GTP
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In photosynthesis, the carbon from CO2 is incorporated into glucose (a hexose sugar). If the carbon in CO2 is radiolabeled, the resulting hexose will show radioactivity.

Multiple choice biology photosynthesis site of photosynthesis chloroplast and pigments of photosynthesis pigments action spectrum and absorption spectrum spectrum of electromagnetic radiation

How many of the given structures are associated with the thylakoid membrane?
PS II, RuBisCO, LHC, PEPcase, $F _0$ of ATP synthase, cytochromes b & f.

  1. $2$
  2. $3$
  3. $4$
  4. $5$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The structures associated with the thylakoid membrane are PS II, LHC, F0 of ATP synthase, and cytochromes b & f. RuBisCO is found in the stroma, and PEPcase is found in the cytoplasm of mesophyll cells, making a total of 4 structures.

Multiple choice biology photosynthesis site of photosynthesis chloroplast and pigments of photosynthesis pigments action spectrum and absorption spectrum spectrum of electromagnetic radiation

Read the following statements.
i) Chloroplasts get aligned with their flat surface parallel to the cell walls to receive optimum light intensity.
ii) Water is the only electron donor in all photosynthetic organisms.
iii) ATP and NADPH are utilised in Carboxylation stage of Calvin cycle.
iv) Bundle sheath cells are characterized by having a large number of chloroplasts and impervious walls.
v) Law of limiting factors was proposed by Blackmann.
Which of the given statements are CORRECT?

  1. (i), (iii) and (iv)

  2. (i), (ii) and (iii)

  3. (iii), (iv) and (v)

  4. (v) only
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology photosynthesis site of photosynthesis chloroplast and pigments of photosynthesis pigments action spectrum and absorption spectrum spectrum of electromagnetic radiation

The spaces inside the folds of ER membrane are known as

  1. Thylakoids

  2. Cisternae

  3. Mesosomes

  4. Periplasmic space
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The internal flattened sac-like compartments or spaces formed by the folds of the endoplasmic reticulum membrane are known as cisternae. Thylakoids belong to chloroplasts, and mesosomes are infoldings of the plasma membrane in bacteria.

Multiple choice biology photosynthesis site of photosynthesis chloroplast and pigments of photosynthesis pigments action spectrum and absorption spectrum spectrum of electromagnetic radiation

Consider following statements A & B
A - The enzyme acts on 'N' terminal of polypeptide chain
B - The enzyme acts on 'C' terminal of a polypeptide chain
Choose the correct option w.r.t the digestive juices which contain these enzymes

  1. A- Succus entericus B - Pancreatic juice

  2. A - Intestinal juice B - Bile juice in duodenum

  3. A - Pancreatic juice B - Intestinal juice

  4. A - Intestinal juice B - Gastric juice
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carboxypeptidases (C-terminal) are found in pancreatic juice. Aminopeptidases (N-terminal) are found in intestinal juice (succus entericus).