CBSE Class 9 Science The Fundamental Unit of Life MCQs Set B

Question. The first person to observe a cell under microscope was
(a) M. Schleiden
(b) T. Schwann
(c) Robert Hook
(d) A.V.Leeuwenhoek

Answer: C

Question. Plasma membrane is made up of
(a) Proteins and carbohydrates1
(b) Proteins and lipids
(c) Proteins and nucleic acids
(d) Proteins, some nucleic acids and lipids

Answer: B

Question. Which of the following is called as ‘Suicidal bags’ ?
(a) Centrosome
(b) Lysosome
(c) Microsome
(d) Mesosomes

Answer: B

Question. What is more abundant in smooth endoplasmic reticulum?
(a) Cistemae and vesicle
(b) Tubules
(c) Tubules and vesicles
(d) Cistemae

Answer: B

Question. Mitochondria are concerned with
(a) Kreb cycle
(b) C, cycle
(c) glycolysis
(d) none of the above

Answer: A

Question. Eukaryotic ribosomes are
(a) 30s
(b) 50s
(c) 80s
(d) 70s

Answer: C

Question. Plant cell wall is mainly composed of
(a) Sugars
(b) Cellulose
(c) Proteins
(d) lipids

Answer: B

Question. Cell theory was propounded by
(a) Morgan
(b) Halden
(c) Schleiden and Schwann
(d) Robert Hooke

Answer: C

Question. Nucleus was discovered of
(a) Robert Brown
(b) Robert Hooke
(c) A.V. Leeuwenhoek
(d) Schwann

Answer: A

Question. Which of the following organelle is the site of Kreb cycle?
(a) Ribosome’s
(b) Lysosomes
(c) eukaryotic cells
(d) Nucleus

Answer: C

Question. The word cell was coined by
(a) Robert hooke
(b) Weismann
(c) Cuvier
(d) Darwin

Answer: A

Question. Plastids that are white in colour (Pigment free)
(a) chloroplast
(b) lysosome
(c) leucoplast
(d) Chromoplast

Answer: C

Question. Striking difference between a plant cell and an animal cell is due to the presence
(a) mitochondria
(b) plasma membrane
(c) cell wall
(d) ribosome

Answer: C

Question. Nucleus discovered by
(a) Robert Hooke
(b) Robert Brown
(c) Dujardin
(d) Purkinje

Answer: B

Question. Mitochondria are absent in
(a) Prokaryotic cells
(b) RBC of mammals
(c) eukaryotic cells
(d) (a) and (b) Both

Answer: D

Question. A solution is said to be hypotonic when
(a) Concentration of medium is higher than that of the cell
(b) Concentration of medium is equal to that of the cell
(c) Concentration of medium is lower than that of the cell
(d) None of the above are correct.

Answer: C

Question. Cell wall shows
(a) Complete permeability
(b) semipermeability
(c) Differential permeability
(d) impermeability

Answer: A

Question. Smallest cells so far known are 
(a) Bacteria
(b) blue green algae
(c) PPLOs
(d) human egg

Answer: C

Question. Mitochondria stores energy in from of
(a) Heat energy
(b) ATP
(c) light energy
(d) none of the above

Answer: B

Question. Tonoplast is the membrane surrounding the
(a) cytoplasm
(b) vacuole
(c) nucleus
(d) mitochondria

Answer: B

Question. Lysosomes are responsible for
(a) protein synthesis
(b) digestion of organic molecules
(c) fat synthesis
(d) fat emulsification

Answer: B

Question. The ATP synthesizing units of Mitochondria are
(a) Oxysomes
(b) peroxysomes
(c) glyoxysomes
(d) lysosomes

Answer: A

Question. Which of the following is the longest cell of animal kingdom?
(a) Bacteria
(b) Nerve cell
(c) Virus
(d) Muscle cell

Answer: B

Question. Plasma membrane is –
(a) Impermeable
(b) formed of cellulose
(c) selectively permeable
(d) nonselective

Answer: C

Question. In prokaryotic cell
(a) nucleus is developed
(b) membrane bounded organelles are present
(c) double membrane bounded organelles are absent
(d) none of the options

Answer: C

Question. Lipid synthesis is performed by
(a) Rough ER
(b) smooth ER
(c) both of above
(d) none of the options

Answer: B

Question. Which one of the following is an example of prokaryotic cell?
(a) Typical plant cell
(b) Typical animal cell
(c) Bacteria
(d) None of the options

Answer: C

Question. Ribosome was named by –
(a) Palade
(b) Porter
(c) de Duve
(d) Koliker

Answer: A

Question. Ribosome consist of –
(a) DNA and protein
(b) RNA and protein
(c) RNA and amino acids
(d) RNA and DNA

Answer: B

Question. Who observed Mitochondria at first?
(a) Porter
(b) Palade
(c) Koliker
(d) Camilo Golgi

Answer: C

Question. A typical plant cell contains
(a) cell well
(b) plastids
(c) large vacuole
(d) all of the options

Answer: D

Question. What is cytology?
(a) Study of cytoplasm
(b) Study of structure and composition of cell
(c) Study of animal cell only
(d) Study of cell only

Answer: B