M C Q s D r i v e

Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

The bond formed when two or more atoms complete their electron shells by sharing electrons is called_____________?

A Ionic bond
B Hydrogen bond
C Covalent bond
D Electrovalent bond
Correct Answer: Covalent bond

During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparantus are called_______?

A Lysosomes
B Primary lysosomes
C Secondary lysosomes
D Food vacuole
Correct Answer: Secondary lysosomes

Which of the following impart a red colour to Rose petals?

A Chloroplast
B Chlorophyll
C Chromoplast
D Leucoplast
Correct Answer: Chromoplast

Ribosomes + m-RNA?

A Polysome
B Phlosome
C Polosome
D None of these
Correct Answer: Polysome

Which of the following statement is incorrect about Glyoxisomes?

A They contain enzymes which help in conversion of fatty acids into carbohydrate
B They are abundant in soyabeans but absent in pea.
C They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.
D They are signle membranous organelles
Correct Answer: They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.

Pancreas produces secretory granules that help in digestion. These granules after passing through endoplasmic reticulum are pinched off from ________ surface of Golgi apparatus:

A Forming face
B Maturating face
C Any of them
D None of these
Correct Answer: Maturating face

60S and 40S subunit combine to form ________ particle.

A 100 S
B 90 S
C 80 S
D 70 S
Correct Answer: 80 S

Whone is not the function of endoplasmic reticulum?

A Nerve impulse conduction
B Transport of material
C Mechanical support
D Synthesis of conjugated molecules
Correct Answer: Synthesis of conjugated molecules

Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called__________?

A Cytosol
B Cisternae
C Polysomes
D Cristae
Correct Answer: Cisternae

Strengthening material of prokaryotic cell wall is__________?

A Cellulose
B Chitin
C Inorganic salts silica waxes and ligin
D Peptidoglycan or Murein.
Correct Answer: Peptidoglycan or Murein.