An Overview Of Cell

Question 1

What is the outer boundary of a typical plant cell?

Answer 1

Cell wall

The cell wall provides structure and protection to the plant cell.

Question 2

What structure is found just within the cell wall of a plant cell?

Answer 2

Cell membrane

The cell membrane regulates the movement of substances in and out of the cell.

Question 3

What is the outer membrane of human cheek cells called?

Answer 3

Cell membrane

This membrane acts as a barrier to separate the cell from its environment.

Question 4

What is the dense membrane-bound structure inside each cell that contains chromosomes?

Answer 4

Nucleus

The nucleus is crucial for storing genetic information and regulating cellular activities.

Question 5

What type of cells have membrane-bound nuclei?

Answer 5

Eukaryotic cells

Eukaryotic cells include plant, animal, and fungal cells.

Question 6

What type of cells lack a membrane-bound nucleus?

Answer 6

Prokaryotic cells

Prokaryotic cells include bacteria and archaea.

Question 7

What occupies the volume of both prokaryotic and eukaryotic cells?

Answer 7

Cytoplasm

The cytoplasm is the site for various cellular processes and reactions.

Question 8

Name at least three organelles found in eukaryotic cells.

Answer 8

• Endoplasmic reticulum (ER)
• Golgi complex
• Mitochondria

Organelles are specialized structures that perform distinct functions within the cell.

Question 9

What type of organelles do prokaryotic cells lack?

Answer 9

Membrane-bound organelles

Prokaryotic cells have simpler structures compared to eukaryotic cells.

Question 10

What are ribosomes classified as in terms of membrane?

Answer 10

Non-membrane bound organelles

Ribosomes play a key role in protein synthesis.

Question 11

Where can ribosomes be found within the cell?

Answer 11

• Cytoplasm
• Chloroplasts
• Mitochondria
• Rough ER

Ribosomes are essential for translating mRNA into proteins.

Question 12

What non-membrane bound organelle is found in animal cells that aids in cell division?

Answer 12

Centrosome

The centrosome is important for organizing microtubules during mitosis.

Question 13

What is the size of mycoplasmas, the smallest cells?

Answer 13

0.3 um in length

Mycoplasmas are unique due to their small size and lack of a cell wall.

Question 14

What is the shape and structure of red blood cells?

Answer 14

Round and biconcave

Red blood cells are designed for efficient gas exchange.

Question 15

What is the shape and structure of white blood cells?

Answer 15

Amoeboid

White blood cells are involved in the immune response.

Question 16

What is unique about the structure of nerve cells?

Answer 16

Branched and long

Nerve cells facilitate the transmission of signals.

Question 17

What is the shape of columnar epithelial cells?

Answer 17

Long and narrow

Columnar epithelial cells are often found in the lining of organs.

Question 18

What is the shape of a tracheid?

Answer 18

Elongated

Tracheids are water-conducting cells in plants.

Question 19

What is the largest isolated single cell?

Answer 19

The egg of an ostrich

Ostrich eggs are notable for their size among single cells.

Question 20

What is the diameter of human red blood cells?

Answer 20

About 7.0 µm

This size is optimal for their function in circulation.

Question 21

What type of cells are considered some of the longest?

Answer 21

Nerve cells

Their length allows them to connect distant parts of the body.

Question 22

Cells can vary in shape. Name three possible shapes they may take.

Answer 22

• Disc-like
• Polygonal
• Columnar

The shape correlates with the cell’s function.

Question 23

True or False: The shape of a cell may vary with the function they perform.

Answer 23

True

This is a fundamental concept in cell biology.

Question 24

Fill in the blank: Cells may be _______ in shape.

Answer 24

[irregular]

Irregular shapes can be found in various specialized cell types.