Biology · Science General

Cell Biology and Structure

3,062 Questions

Cell biology focuses on the structure and function of cellular organelles. Key topics include cellular respiration, DNA inheritance, and energy production. These fundamental biology concepts are crucial for medical entrance and state service examinations.

Cell organelles functionsCellular respiration sitesDNA and ribosomesAnimal cell structurePlant cell components

Cell Biology and Structure Questions

Multiple choice

Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?

  1. Lysosomes are double membrane vesicles budded off form golgi apparatus and contain digestive enzymes.

  2. Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion.

  3. Leucoplasts are bounded by two membranes lack pigment but contain their own DNA and protein synthesizing machinery

  4. Sphesrosomes are single membrane bound and are associated with synthesis and storage of lipids.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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Multiple choice

Vacuole in a plant cell

  1. Lacks membrane and contains air

  2. Lacks membrane and contains water and excretory substances

  3. Is membrane-bound and contains storage proteins and lipids

  4. Is membrane-bond and contains water and excretory
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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Multiple choice

Compound tissue is defined as -

  1. Similar types of cells held together by connective tissue

  2. Different types of cells which are different in structure and function

  3. Different types of cells performing one function

  4. Similar cells at different regions performing many functions
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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Multiple choice

Microvilli of epithelial cells -

  1. Increase surface area

  2. Protect the cells

  3. Engulf the foreign matter

  4. Give movements to the cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Microvilli of epithelial cells increase surface area.

Multiple choice

A connective tissue

  1. Has no matrix

  2. Covers the skin

  3. Has abundant matrix

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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