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

Plant cells lack

  1. Plastids

  2. Centrosome

  3. Centrioles

  4. Both centrosome and centrioles
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ans - 4

Multiple choice

The acrosome of sperm is derived from

  1. Golgi bodies

  2. Mitochondria

  3. Centrosome

  4. Ribosomes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The acrosome of the sperm, which contains enzymes for penetrating the egg, is formed from the Golgi apparatus during spermiogenesis.

Multiple choice

Intercellular communication in multicellular organism occurs through :

  1. digestive system only

  2. respiratory system only

  3. nervous system only

  4. both nervous and endocrine system
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Animals have two systems of co-ordination i.e., nervous system and endocrine system. Neurones are the basic structural and functional units of the nervous system which spread through out the organism forming a complex communication network. Endocrine system release hormones for intercellular communication.

Multiple choice

White adipose tissue contains

  1. multilocular fat cells

  2. bilocular fat cells

  3. unilocular fat cells

  4. alocular fat cells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Adipose tissue is a fat storing connective tissue which consists of several sphereical or oval adipose cells (= adipocytes or fat cells). There are two types of tissues white or yellow fat and brown fat. White fat cells are monolocular or unilocular whereas brown fat cells are multilocular.