Animal cell

Question 1

Nucleus structure?

Answer 1

• Contains a nucelolus
• Largest cell organelle
• Contains chromotain (larger extended version of chromosomes)

Question 2

Nucleus function?

Answer 2

• nucleolus makes ribosomes
• chromosomes are made of DNA
• DNA is organised into genes (each code for a protein)

Question 3

cell membrane structure?

Answer 3

-Made of phospholipids in two layers with proteins present.

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Question 4

cell membrane function?

Answer 4

• partially permeable barrier controlling exchange between the cell and its environment

Question 5

Mitochondria function?

Answer 5

• site of aerobic respiration in cell

- aerobic respiration occurs in cytoplasm

Question 6

endoplasmic reticulum function?

Answer 6

• ribosomes are found on its surface it is called= rough ER, and transports proteins made by the ribosomes.
• Smooth ER (no ribosomes) is the site of lipid synthesis.

Question 7

ribosome structure?

Answer 7

• made up of RNA and protein

Question 8

ribosome function?

Answer 8

• can be attached to endoplasmic reticulum or free in the cytoplasm
• site of protien synthesis

Question 9

golgi apparatus structure?

Answer 9

• flattened membrane bound sac, called cisternae, continuously being formed at one end of the stack and budded off as vesicles at the other end

Question 10

golgi apparatus function?

Answer 10

• Internal processing and transport system e.g. of proteins formed by ER.
• Make lysosomes.

Question 11

Microvilli function?

Answer 11

-Involved in a wide variety of functions, including absorption, secretion, cellular adhesion

Question 12

Lysosome function?

Answer 12

• Many functions all concerned with the breakdown of structures or molecules. E.g. getting rid of old organelles, digesting bacteria, cell suicide

Question 13

Microvilli structure?

Answer 13

• Increase the surface area of cells
• Not present on all cell types
• Cellular membrane containing microfilaments that form a brush border on the cell’s outer surface.

Question 14

Lysosome structure?

Answer 14

• A simple spherical sac bounded by a single membrane.

- Contain hydrolytic enzymes.

Question 15

What is meant by eukaryotic cell?

Answer 15

• An organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins into chromosomes. The cells of eukaryotes also contain an endoplasmic reticulum and numerous specialized organelles not present in prokaryotes, especially mitochondria, Golgi bodies, and lysosomes.