Chapter 7 - Diversity of Cells

Question 1

What is a Tissue?

Answer 1

A tissue is a group of cells that are similar and are adapted to carry out a shared function.

Question 2

2 Examples of Animal Tissue

Answer 2

1. Muscle Tissues

2. Nervous Tissues

Question 3

What are the three types of muscle cells?

Answer 3

1. Skeletal - Voluntary muscle that you have conscious control over.
2. Cardiac - Involuntary - Muscle that you have no conscious control over. Eg. Heart
3. Smooth - Involuntary - Muscle that you have no conscious control over. Eg. Veins, Lungs etc.

Question 4

What is the function of a Muscle Cell?

Answer 4

Muscle Cell

To contract and relax - Movement of the skeleton.

Question 5

What is the function of Nervous Tissue?

Answer 5

Neuron

Carry messages by electrical impulses. Controls co-ordination, emotions and memory.

Question 6

Examples of Plant Tissues

Answer 6

1. Dermal
2. Ground
3. Vascular

Question 7

What is the Function of the Dermal Tissue?

Answer 7

It is the outer covering of the plant and the function is protection.

Question 8

What is the function of the Ground Tissue?

Answer 8

It is the ‘Bulk’ inside the dermal. Function is storage.

Question 9

What is the function of Vascular Tissue?

Answer 9

Transports water (Xylem Vessel) and soluble food (Phloem Vessel).

Question 10

What is Tissue Culture?

Answer 10

The growth of tissue in or on an artificial medium outside of an organism.

Question 11

Definition of In Vitro

Answer 11

Outside of the Organism

Question 12

Definition of In Vivo

Answer 12

Inside the Organism

Question 13

Step-by-Step process of Tissue Culturing?

Answer 13

1. The tissue sample is removed.
2. Growth in glassware. (In Vitro)
3. Place the sample in sterile nutritive fluid.
4. Growth is by mitosis (full copy/replication)

Question 14

Examples of Tissue Culturing in Animals

Answer 14

1. Tissue Growth - Skin Grafts

2. MAB’s Monoclonial Antibodies

Question 15

Examples of Tissue Culturing in Plants

Answer 15

1. Micropropagation- Many plants
2. Fast/ Cheap/ Indentical
3. Clones

Question 16

What is Micropropagation?

Answer 16

Cells - Callus - Embryos - Plants

Question 17

What are 3 advantages of micropropagation?

Answer 17

1. Large quantity in a short amount of time.
2. Genetically Identical
3. Inexpensive

Question 18

What are MAB’s-Monoclonial Antibodies?

Answer 18

They identify cancer cells by colour change. Toxic drugs are attached to MAB’s therefore deliver only to cancer cells.

Question 19

What is an organ?

Answer 19

A number of tissues that work together to carry out a specific function.
Eg. - In plants: Leaf, Stem, Root
Eg.- In animals: Heart, Liver, Brain.

Question 20

What is an organ system?

Answer 20

A number of organs that work together to preform one or more function.

Question 21

How many systems does the human body have?

Answer 21

10 Systems

Question 22

Example of a Human Organ System.

Answer 22

The Circulatory System - Heart, Blood Vessels, Arteries, Capillaries etc.