| Class | 9th |
| Subject | Science |
| Chapter 5 | The fundamental unit of life |
| Questions Type | MCQs |
| pdf File Download | Available |
Class 9 Science The fundamental unit of life MCQ
1. The structure of plasma membrane we studied is also known as –
(A) Fluid mosaic model
(B) Unit membrane
(C) Unit membrane
(D) Fluid Model
Correct Answer: (A)
2. Among The lipid which of the following is found in larger amount
(A) Phospholipid
(B) cholesterol
(C) Glycolipids
(D) all lipids
Correct Answer: (A)
3. For cell membrane, name “plasmalemma” was given by
(A) Porter
(B) Nageli
(C) Cramer
(D) J. Q. Plowe
Correct Answer: (D)
4. ………. Can freely cross the cell membrane in the cell.
(A) Water
(B) Liver
(C) Hair
(D) Veins
Correct Answer: (A)
5. The phospholipids molecule consists of ………..
(A) Cell wall
(B) Polar head
(C) Non-polar tail
(D) Both (B) and (C)
Correct Answer: (D)
6. A biological part of the cell that separates inner partof the cell from outside environment is called as ………..
(A) Plasma membrane
(B) Cell wall
(C) Cytoplasm
(D) Nucleus
Correct Answer: (A)
7. The chemical composition of plasma membrane consists of …………
(A) Lipids
(B) Proteins
(C) Carbohydrates
(D) All of them
Correct Answer: (D)
8. Pinocytosis is also known as –
(A) cell eating
(B) cell drinking
(C) cell engulfing
(D) none
Correct Answer: (B)
9. Vesicular movement involves in
(A) bulk
(B) active
(C) passive
(D) fasciliated diffusion
Correct Answer: (A)
10. Which of the following is found in largest amount in
plasma membrane
(A) lipid
(B) carbohydrate
(C) protein
(D) all are equal
Correct Answer: (A)
1. Ribosomes are made up of:-
(A) DNA + Protein
(B) RNA + Protein
(C) RNA + Lipid
(D) RNA + Phosphate
Correct Answer: (B)
2. The fluid mosaic model of plasma membrane was proposed by:
(A) Schielden and Schwann
(B) Singer and Nicolson
(C) Rudolf Virchow
(D) A. V. Leeuwenhoek
Correct Answer: (B)
3. Total number of pairs of chromosomes in human beings are:
(A) 22
(B) 23
(C) 46
(D) 44
Correct Answer: (B)
4. Genetic material of prokaryotic cells lies in:
(A) Nucleus
(B) Nucleolus
(C) Nucleoid
(D) Centrosomes
Correct Answer: (C)
5. The part of the nucleus that plays major role for synthesis of ribosome:
(A) Chromatin reticulum
(B) Nuclear pore
(C) Nucleoplasm
(D) Nucleolus
Correct Answer: (D)
6. Blood cells without nucleus are:
(A) Red blood corpuscles
(B) White blood corpuscles
(C) Blood platelets
(D) None of these
Correct Answer: (A)
7. Which of these options are not a function of Ribosomes?
(i) It helps in manufacture of protein molecules
(ii) It helps in manufacture of enzymes
(iii) It helps in manufacture of hormones
(iv) It helps in manufacture of starch molecules
(A) (i) and (ii)
(B) (ii) and (iii)
(C) (iii) and (iv)
(D) Only (iv).
Correct Answer: (A)
8. Plasma membrane consists mainly of:
(A) Proteins embedded in carbohydrates.
(B) Phospholipids embedded in a protein bilayer
(C) Proteins embedded in phospholipid bilayer
(D) Proteins embedded in polymers of glucose
Correct Answer: (C)
9. Which of these is not related to endoplasmic reticulum?
(A) It behaves as transport channel for proteins between nucleus and cytoplasm
(B) It transports materials between various regions in cytoplasm
(C) It can be the site of energy generation
(D) It can be the site for some biochemical activities of the cell
Correct Answer: (C)
10. Find out the correct sentence:
(A) Enzymes packed in Lysosomes are made through RER (rough endoplasmic reticulum)
(B) Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively
(C) Endoplasmic reticulum is related with the destruction of plasma membrane
(D) Nucleoid is present inside the nucleoplasm of eukaryotic nucleus
Correct Answer: (A)
1. Lysosomes are call suicidal bags because it contains
(A) hydrolytic enzymes
(B) hydrolytic hormones
(C) ligase hormone
(D) ligase enzyme
Correct Answer: (A)
2. Lysosomes are formed mainly with the help of
(A) Golgi bodies
(B) plastid
(C) mitochondria
(D) chloroplast
Correct Answer: (A)
3. Centrosome are present in
(A) plant cell
(B) animal cell
(C) bacterial cell
(D) all of this
Correct Answer: (B)
4. How many of the following have cellulosic cell wall rose, Hibisscus, Amoeba paramecium, Dahlia, Marygold Mycobacterium, Salmonella, mango peanut.
(A) 6
(B) 5
(C) 4
(D) 7
Correct Answer: (A)
5. Vacuoles occupied – percentage of plant cell wall –
(A) 80%
(B) 60%
(C) 10%
(D) 40%
Correct Answer: (A)
6. Leucoplast leucoplast are colourless plastids that
(A) contains carbohydrates
(B) proteins
(C) lipids
(D) all
Correct Answer: (D)
7. chloroplast is a special type of plastid
(A) respiration
(B) transportation
(C) photosynthesis
(D) gaseous exchange
Correct Answer: (C)
8. Vacuole can store
(A) minerals
(B) water
(C) air
(D) all
Correct Answer: (D)
9. Tonoplast is a membrane present in
(A) lysosome
(B) ribosome
(C) peroxisome
(D) vacoule
Correct Answer: (D)
10. Which of the following are single membrane bound
(A) organelles nucleus
(B) vacoule
(C) lysosome
(D) both B and C
Correct Answer: (D)
| Chapter -1 Matter in Our Surroundings |
| Chapter – 2 Is Matter Around Us Pure? |
| Chapter -3 Atoms and Molecules |
| Chapter -4 Structure of the Atom |
| Chapter -5 The Fundamental Unit of Life |
| Chapter -6 Tissues |
| Chapter -7 Motion |
| Chapter -8 Force and Laws of Motion |
| Chapter -9 Gravitation |
| Chapter -10 Work and Energy |
| Chapter -11 Sound |
| Chapter -12 Improvement of Food Resources |