The Cell — Unit Of Life Mock Tests

34 questions available

The Cell — Unit Of Life Mock Test 1

Questions: 30

The Cell — Unit Of Life Mock Test 2

Questions: 4

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Class 11 Biology

Which of the following is NOT a function of the nucleolus?

A Synthesis of ribosomal RNA (rRNA) and ribosome subunit assembly

B DNA replication

C Production of rRNA

D Assembly of ribosomal subunits

Class 11 Biology

Lysosomes are called the "suicidal bags" of the cell because:

A When a cell is damaged, lysosomes may burst and release hydrolytic enzymes that digest the cell itself

B They destroy harmful bacteria entering the cell

C They are involved in programmed cell death of the entire organism

D They transport toxic materials out of the cell

Class 11 Biology

The "fluid mosaic model" of the plasma membrane, proposed by Singer and Nicolson (1972), describes the membrane as:

A A phospholipid bilayer with proteins embedded (integral) and associated (peripheral) in a mosaic pattern

B A rigid structure made of cellulose

C A single layer of phospholipids with no proteins

D A protein bilayer with embedded lipids

Class 11 Biology

Which of the following statements about the plasma membrane is correct?

A It is composed of a phospholipid bilayer with embedded proteins in a fluid mosaic arrangement

B It consists of a single layer of phospholipids with cholesterol on the outer surface

C It is made of cellulose and provides rigid structural support to the cell

D It is a protein layer surrounded by a carbohydrate monolayer

Class 9 Science

Which of the following is responsible for the transmission of hereditary characteristics?

A Proteins

B DNA

C Lipids

D Carbohydrates

Class 9 Science

Which of the following organelles contain digestive enzymes?

A Mitochondria

B Lysosomes

C Ribosomes

D Vacuoles

Class 11 Biology

According to the fluid mosaic model of the cell membrane, which statement is correct?

A Phospholipids are static while proteins move freely

B Both lipids and proteins can move laterally but proteins are mostly integral or peripheral

C Proteins are fixed in place while phospholipids cannot move

D The membrane is a rigid structure with no fluidity

Class 11 Biology

Which of the following cell organelles is known as the "powerhouse of the cell" because it is the site of aerobic respiration and ATP production?

A Golgi apparatus

B Lysosome

C Mitochondria

D Endoplasmic reticulum

The Cell — Unit Of Life Mock Tests

The Cell — Unit Of Life Mock Test 1

The Cell — Unit Of Life Mock Test 2

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