Dna

Question 1

3 examples of tasks carried out by proteins. explain.

Answer 1

Support- elastin in skin

Transportation of substances- Hemoblogin in rbc’s transport oxygen

Catalysts: Enzymes that speed up biochemical reactions

Immunity: Antibodies

Control and message relay: hormones3 examples of tasks carried out by proteins. explain.

Question 2

Transport

Answer 2

Hemoglobin in red blood cells transport oxygen

Question 3

support

Answer 3

Elastin in skin

Question 4

Immunity

Answer 4

Antibodies

Question 5

Catalysts

Answer 5

Enzymes are proteins that speed up biochemical reactions

Question 6

Control and message relay

Answer 6

hormones

Question 7

What are genes?

Answer 7

Genes are a particular sequence of base pairs contained within a DNA strand, it codes the information required to manufacture proteins and it contains codes for hereditary traits such as eye colour.

Question 8

What are proteins?

Answer 8

Proteins are large complex molecules that’re responsible for expressing character traits in an organism and they carry out multiple functions.

Question 9

What’s Genetic diversity?

Answer 9

Genetic diversity is all the possible variations of a species. Genetic diversity is increased through sexual reproduction and having large and diverse populations

Question 10

What’s DNA?

Answer 10

Deuxyribonucleic Acid is a double helix strand composed of nucleotides, located in the nucleus.

Question 11

What are nucleotides composed of?

Answer 11

1. Phosphate group
2. A sugar (deoxyribose)
3. A nitrogenous base

Question 12

What are the 4 nitrogenous bases?

Answer 12

1. Adenine (A)
2. Guanine (G)
3. Cytosine (C)
4. Thymine (T)

Question 13

Genome?

Answer 13

A genome is a complete set of genetic information of a species or individual.

Question 14

Why are there only 2 possible combinations of DNA pairs?

Answer 14

Because of the chemical structure, it only allows one to bond with another.

Question 15

Way(s) that don’t serve to diversify the population

Answer 15

Asexual reproduction

Question 16

Is it possible for a child to have genetic material identical to one parent?

Answer 16

No, because half of the genetic info. comes from one parent (the father) and the other half (the mother)

Question 17

Imagine a small isolated community where individuals continue to breed with each other for generations. What’re the possible consequences

Answer 17

1. Genetic mutation
2. Unable to adapt to changes in the environment.

Question 18

What are the benefits of having genetic diversity in a popualtion?

Answer 18

1. Some individuals of a species have differences in their genetic makeup, that allows them to survive and adapt to harmful diseases that killed the rest of the individuals within the species
2. More likely to survive
3. Less likely to have genetic mutations

Question 19

What’s cell specialization?

Answer 19

A cell designed to perform a certain function in a organism. Ex. rbc, nerve cells.

Question 20

Differences between genome, gene and DNA:

Answer 20

DNA- a double helix structure made up of nucleotides

Gene- a segment of DNA, that codes the info. to manufacture a protein

Genome- the complete set of genetic info. of a species or individual

Question 21

Cells use the info I contain to carry out a particular task. what am I?

Answer 21

Gene

Question 22

What’s a genetic mutation?

Answer 22

A sudden change in gene structure. It can be bad or good. Sometimes it can be passed from one cell to another during mitosis. It can be caused by external factors like UV rays. Genetic mutations are not hereditary, however sometimes when a genetic mutation occurs when reproductive cells are formed, it can be passed on generation to generation