Cell Structure

Question 1

What is plasmodesmata

Answer 1

Channels for exchanging substances with adjacent cells

Question 1

What does prokaryotic mean

Answer 1

Single-celled

Question 2

Plasma membrane

Answer 2

The membrane found on the surface of animal cells and just inside the cell wall of the plant cells and prokaryotic cells. It’s made mainly of lipids and proteins

Question 3

What is the function if the plasma membrane

Answer 3

Regulates the movement of substances into nd out of the cell. It also had receptor molecules on it which allow it to respond to chemicals like hormones

Question 4

Cell wall

Answer 4

A rigid structure that surrounds plant cells. It’s made mainly of the carbohydrate cellulose

Question 5

Function of cell wall

Answer 5

Supports plant cells

Question 6

Nucleus

Answer 6

A large organelle surrounded by a nuclear envelope which contains many pores. The nucleus contains chromatin (which is made from DNA and proteins) and a structure calles the nucleolus.

Question 7

Function of nucleus

Answer 7

It controls the cell’s activities

Question 8

Function of DNA

Answer 8

Contains instructions to make proteins

Question 9

Function of nuclear pores

Answer 9

Allows substance to move between the nucleus and the cytoplasm

Question 10

Function of nucleolus

Answer 10

Makes ribosomes

Question 11

Lysosomes

Answer 11

A round organelle surrounded by a membrane

Question 12

Function of lysosomes

Answer 12

They contain digestive enzymes that can be used to digest invading cells or to break down worn out components of the cell

Question 13

Ribosomes

Answer 13

A very small organelle that either floats free in the cytoplasm or is attached to the rough endoplasmic reticulum. It is made up of proteins and RNA. IT’s not surrounded by a membrane.

Question 14

Functions of the ribosome

Answer 14

The site where proteins are made

Question 15

Rough Endoplasmic Reticulum

Answer 15

A system of membranes enclosing a fluid-filled space. The surface is overed with ribosomes

Question 16

Function of RER

Answer 16

Folds and processes proteins that have been made at the ribosomes

Question 17

Smooth Endoplasmic Reticulum

Answer 17

Same as RER but with no ribosomes

Question 18

Function of SER

Answer 18

Synthesises and processes lipids

Question 19

Vesicle

Answer 19

A small fluid-filled sac in the cytoplasm surrounded by a membrane

Question 20

Function of a vesicle

Answer 20

Transports substances in and out f the cell and between organelles