Tag: cell structure and organization

Quizzes (10) Questions (43)

Questions Related to cell structure and organization

Multiple choice bio-chemistry cell structure and organization eukaryotic cell kinds of cell introduction to eukaryotic cell

Eukaryotic cells have membrane bound organelles.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Organelles are the specialised and organised structures in a living cell. These may be bound by a single or double membrane (Exception is ribosomes which are non-membranous cell organelles present in both prokaryotes and eukaryotes). Membrane-bound cell organelles include nucleus, vacuole, endoplasmic reticulum, chloroplasts, mitochondria, lysosomes, Golgi apparatus and are present only in eukaryotes.
So, the correct answer is 'True'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Which of the following is not the function of a vacuole?

  1. Storage

  2. Providing turbility and rigidity to the cell

  3. Waste excretion

  4. Locomotion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The vacuole are the membranous vesicular structures in the cells of the living organisms. The vacuoles are involved in the storage of the food materials. The presence of vacuole provides rigidity and shape to the cell with the help of turbulence. The wastes from the cells can be excreted with the help and movement of the vacuoles. The vacuoles are not responsible for locomotion. 

Thus, the correct answer is option D. 

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

When a fresh water protozan is placed in marine water

  1. The contractile vacuole disappears

  2. The contractile vacuole increases in size

  3. A number of contractile vacuoles appear

  4. The contractile vacuole remains unchanged
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Contractile vacuoles are membrane-bound organelles that pump excess water out of the protozoan. When the freshwater protozoan is placed in a marine environment it loses water due to exosmosis as salt concentration is high outside. The contractile vacuole disappears to prevent the loss of water from the organism because in the presence of contractile vacuoles the cell will be dehydrated. 

Thus the correct answer is option A.

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Outermost layer surrounding the vacuole is 

  1. Tonoplast

  2. Vacuolar Membrane

  3. Both A and B

  4. Vacuolar cell wall
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A vacuole is the double membrane bound structure. The outermost covering of vacuole is called as tonoplast or vacuolar membrane. The tonoplast is the cytoplasmic membrane separating the vacuolar contents from the cell's cytoplasm. Therefore, the correct answer is option C.

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Which out of the following is not a function of vacuole?

  1. Storage

  2. Providing turgidity and rigidity to the cell

  3. Waste excretion

  4. Locomotion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The vacuole is the membrane bound cell organelle and has the main function of osmoregulation. It also stores fluid and solid and hence, maintains rigidity of cell. In some organism vacuole involves in the excretion of wastes. Thus, the correct answer is option D.

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

'Storage sac of the cell' is ___________________

  1. Ribosome

  2. Chloroplast

  3. Vacuole

  4. Golgi body
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vacuoles are the membrane-bound organelle filled with water containing inorganic and organic molecules including. In-plant cells, it is large and centrally located whereas, in animal cells, it is either small or absent. It is also called as storage sac as it stores water, food and waste materials.
So, the correct answer is option C.

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Which one of the following is not the function of a vacuole?

  1. Storage

  2. Providing turgidity and rigidity to the cell

  3. Waste excretion

  4. Locomotion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The vacuole is the membrane bound organelle mainly found in the plant cell. In plant cell it large and centrally located. It has three major functions  such as:
1. Contribute to the rigidity of the plant using water to develop hydrostatic pressure.
2. Store nutrient and non-nutrient chemicals.
3. Break down complex molecules.
Thus, the correct answer is option D.

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Major constituent of latex is

  1. Alkaloid

  2. Rubber

  3. Pigments

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

Latex is a miliky, white emulsoin, composed with 30-40% rubber particles, 55-65% water, and small amounts of protein, sterol glycosides, resins, ash, and sugars. Natural rubber latex consists of particles of rubber hydrocarbon and nonrubber substances dispersed in an aqueous serum phase.


So the correct option is 'Rubber'.

Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Name the part of the cell that stores vital substances.

  1. Mitochondria

  2. Vacuoles

  3. Plastid

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

Mitochondria produces the energy currency, i.e., ATPs of the cell. Mitochondria take nutrients and convert them into energy molecules. This process is known as 'oxidative phosphorylation'. 
Plastids are present in plant cells, which synthesize and store important chemical compounds used by the cell. 
Golgi apparatus has the main function of modifying, sorting and packaging the proteins, which are synthesized by cells. Golgi bodies are also involved in the transport of lipid molecules across the cell. 

Vacuoles are storage bubbles found in animal and plant cells but bigger in plant cells. These are used for storage of food, water and many other vital substances. Thus, the correct answer is option B.