Free MCQs & Online Quiz Practice for Exams

Q: Photorespiration involves the following reaction which occurs in the sequence of (ETEA 2016)

A) Glycolate→Glycine,Glycine→Serine+CO₂,RuBP+O₂→Glycolate

B) RuBP+O₂→Glycolate,Glycine→Serine+CO₂,Glycolate→Glycine

C) RuBP+O₂→Glycolate,Glycolate→Glycine,Glycine→Serine+CO₂

D) Glycine→Serine+CO₂,RuBP+O₂→Glycolate,Glycolate→Glycine

Q: Approximately how much calories of free energy are stored in plant biomass for every mole of CO₂ fixed during photosynthesis? (ETEA 2017)

A) 111

B) 112

C) 114

D) 116

Q: 2 FADH₂ can yield energy (ETEA 2017)

A) 4 ATP

B) 8 ATP

C) 6 ATP

D) 10 ATP

Q: The following statement is true for the absorption spectra of photosynthesis (ETEA 2018)

A) Chlorophyll a and b have same absorption spectra

B) Chlorophyll a and b have different absorption spectra

C) Chlorophyll a b and carotenoids have same absorption spectra

D) Carotenoids and chlorophyll b have same absorption spectra

Q: Alcoholic fermentation is the sole means of respiration in (ETEA 2018)

A) Saccharomyces

B) Armillaria

C) Trichonympha

D) Balantidium

Q: Which of the following is absent in C₄ plants (ETEA 2018)

A) Calvin cycle

B) Bundle sheath cells

C) PEPCase

D) CO₂ fixation in mesophyll

Q: Organization of photosynthetic pigments into clusters is (ETEA 2019)

A) Photosynthesis

B) Photosystem

C) Photosynthetic cluster arrangement

D) Calvin system

Q: Which wavelengths are mainly absorbed by chlorophyll? (ETEA 2019)

A) Violet blue and red

B) Green and blue

C) Violet and orange

D) Red and indigo

Q: Which statement about chlorophyll is not true? (ETEA 2019)

A) It contains terminal carbonyl group

B) It contains phytol tail

C) It contains porphyrin ring

D) It contains magnesium

Q: Oleic acid is a fatty acid with 18 carbon atoms It breaks down into 9 acetyl groups It is estimated that these nine acetyl groups would generate ATP molecules (ETEA 2019)

A) 81

B) 98

C) 101

D) 108

Q: The genetic material of plant viruses mostly is (ETEA 2005)

A) DNA

B) RNA

C) Both DNA and RNA

D) Proteins

Q: Genome of which of the following virus consists of a single molecule of DNA? (ETEA 2006)

A) HAV

B) HBV

C) HCV

D) HIV

Q: Genome of which of the following consists of a single molecule of DNA? (ETEA 2007)

A) HAV

B) HBV

C) HCV

D) HIV

Q: Phage-viruses are usually abundant in the intestine of man and animals because (ETEA 2008)

A) Abundant bacteria are present

B) Abundant water is present

C) Abundant nutrients are present

D) They can live at human body temperature

Q: Most favorite host cell of HIV-virus is (ETEA 2009)

A) Lymphocytes

B) RBC

C) T-cells

D) B-cells

Q: The enzyme "Reverse transcriptase" present in HIV-virus is (ETEA 2009)

A) 50 molecules per virion

B) 40 molecules per virion

C) 30 molecules per virion

D) 20 molecules per virion

Q: The shape of polio virus is (ETEA 2010)

A) Polyhedral

B) Rod shape

C) Tadpole shape

D) Golf-ball shape

Q: HIV is also known as (ETEA 2010)

A) AIDS

B) HTLV

C) None

D) None

Q: Phage-virus secretes enzyme lysozyme from its (ETEA 2011)

A) Tail region

B) Head region

C) Neck region

D) Capsule region

Q: HIV contains (ETEA 2011)

A) Two RNA

B) A single RNA

C) DNA and RNA

D) DNA