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

Skeletal tissue

  1. Epithelial

  2. Connective

  3. Muscular

  4. Nervous
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bone is a specialized form of connective tissue that provides structural support to the body.

Multiple choice

Which type of tissue has the ability to stretch?

  1. stratified transitional

  2. simple cubiodal

  3. stratified squamous

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

Transitional epithelium is found in organs like the urinary bladder, where it allows the tissue to stretch and change shape as the organ fills.

Multiple choice

Which structure controls the cells function?

  1. Nucleus

  2. Nucleolus

  3. Cillia

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

The nucleus contains the cell's genetic material (DNA) and acts as the control center, regulating all cellular activities and functions.

Multiple choice

In which cell organelle is protein produced?

  1. Stomach

  2. Ribosome

  3. Liver

  4. Lysosome
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ribosomes are the cellular structures responsible for protein synthesis. The stomach and liver are organs, not organelles, and lysosomes are involved in waste breakdown.

Multiple choice

Where in the cell does fermentation take place?

  1. Cytoplasm

  2. ER

  3. Nucleus

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

Fermentation is an anaerobic process that occurs entirely in the cytoplasm of the cell, as it does not require the mitochondria, which are used for aerobic respiration.

Multiple choice botany metabolism, cell respiration, and photosynthesis light dependent or hill reaction phases of photosynthesis emerson's experiments & hill's reaction

PS I and PS II occur over

  1. Grana of chloroplast

  2. Matrix of mitochondria

  3. Stroma of chloroplast

  4. Inner membrane of mitochondrion
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The process that converts light energy into chemical energy takes place in a multi-protein complex called a photosystem. Two types of photosystems are embedded in the thylakoid membrane:- photosystem II ( PSII) and photosystem I (PSI). Each photosystem plays a key role in capturing the energy from sunlight by exciting electrons. These energized electrons are transported by “energy carrier” molecules, which power the light-independent reactions.


So, the correct option is 'Option A'.

Multiple choice

The human body contains?

  1. Over 300 bones

  2. Over 200 organs

  3. Over 100 billion chemicals

  4. Over 100 trillion microorganisms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The human body hosts a vast ecosystem of microorganisms, including bacteria, fungi, and viruses, which collectively number in the trillions. The other options significantly underestimate or misrepresent biological counts.

Multiple choice

Cells are_______ but bigger than ________.

  1. Microscopic........Molecules

  2. Gigantic..............People

  3. Gooey..................Freckles

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

Cells are microscopic structures that form the basic unit of life, making them larger than individual molecules but smaller than visible organisms or tissues. The other options are nonsensical in this context.

Multiple choice

Living things are made up of?

  1. Legos

  2. Cells

  3. Body parts

  4. Blood
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cells are the fundamental building blocks of all living organisms. While organisms contain blood and body parts, those are composed of cells.