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Flashcards in Paper 1 Deck (24):
1

Suggest why vitamin D deficiency is More of a problem for children than for adults

Children's bones are still growing whereas adult's are fully developed

2

Vitamins are an essential part of a balanced diet.

Give three other components of a balanced diet.

Fat/lipids
Carbohydrates
Protein
Fibre/roughage
Water
Mineral/so/ions

3

Suggest why is that sweet snacks, chocolate and soft drink is an unsustainable diet for children who are not very active

High on sugar/fat

Energy not used/not burn

4

Suggest the health problems that might develop if children have too much fat in their diets

Obesity/overweight
Diabetes
Heart disease/heart attack
Block of arteries
Stroke

5

Describe how you would carry out an experiment to find out the energy value of the potato crisp

Weigh crisp
Burn crisp
Make sure crisp is burned completely
Heat water
Hold burning Crisp underwater
Find the volume of water
Measure temperature before and after/temperature rise/change in temperature

6

Humans are affected by many viruses. Viruses only contain one sort of…….Acid/either DNA or…….

Nucleic
RNA

7

One virus, which causes the disease AIDS, is the....... virus. People with AIDS are vulnerable to infection because their...... system does not work so effectively. This means that they are not able to produce ..….blood cells that normally fight off infections by producing specific proteins called….That help to destroy pathogens

HIV
Immune
White
Antibodies

8

Diseases caused by viruses can be prevented by injecting the body with an inactive form of the virus. The method of injecting is known as…… And stimulates the bodies defence system to produce memory cells

Immunisation

9

Suggest how someone could accurately determine their body temperature

Put a thermometer in the mouth

10

Hormone?
Repairs uterus lining
Develops secondary sexual characteristic

Oestrogen

11

Hormone?
Maintains uterus lining
Prevents eight release

Progesterone

12

How does progesterone and oestrogen travel from the ovary to the uterus?

In the blood/plasma

13

Give two female secondary sexual characteristics

Breasts/mammary glands/nipples
Wide hips
Pubic hair
Menstruation/period

14

Name the process that cuts DNA in genetic modification/cloning

Restriction enzyme

15

In the enzyme that joins DNA

Ligase

16

Name a vector

Plasmid/virus/gene gun

17

A clone sheep is transgenic.

What is meant by the term transgenic?

Genes/DNA/allele from different species/human genes in sheep

18

A transgenic sheep can be produced by cloning.

Suggest the advantages of reproducing the transgenic sheep by cloning. (3 marks)

-Genetically identical/same jeans/same DNA/all sheep have the gene
-Produce the protein/plotting agent
-More human protein/clotting agents/mass production
-More sheep/many sheep/faster reproduction asleep/faster production of offspring
-Only have to GM once

19

Name the small structures in normal plasma that are involved in blood clotting

Platelets

20

Explain why it is important have blood that clots

Less blood loss

Less entry of microbes

21

Describe how the process of nitrification affects the availability of nitrates to plants

Nitrifying bacteria
Ammonia/ammonium provided to plants

22

Some farmers growing a vegetable such as clover in their field day then plough them into the soil for growing crops.

Suggest why they do this.

Nitrogen fixing bacteria
Nitrogen into nitrates
Ammonia
Amino acids/proteins
Growth/high yield
Decompositions/decomposes
Decomposing bacteria/Fungi
Mineral ions/salts

23

Explain why only about 10% of the energy in cereal crop is transferred to organisms that eat the crop

Respiration
Not all eaten
Not all digested

24

Describe the biological consequences of cigarette smoking on the human lungs. (5 marks)

Emphysema
Damage to alveoli
Bronchitis
Bacteria/infection
Cilia damaged
Build up of mucus
Cancer/mutation
Tar