CSEC HSB CRAM #2

Question 1

Name the disease/s caused by lack of Carbohydrates and its effect.

Answer 1

Diabetes
Marasmus

EFFECT
causes energy deficiency.

Question 2

Name the disease/s caused by lack of Calcium and its effect.

Answer 2

Rickets

EFFECT
quickly decays teeth and white flecks on fingernails.

Question 3

Name the disease/s caused by lack of Iron and its effect.

Answer 3

Anemia

EFFECT
insufficient amount of red blood cell production.

Question 4

Name the disease/s caused by lack of Iodine and its effect.

Answer 4

Goiter

EFFECT
swelling of the thyroid gland.

Question 5

Name the disease/s caused by lack of Phosphorus and its effect.

Answer 5

Rickets

EFFECTS
quickly decays teeth and white flecks on fingernails.

Question 6

Name the disease/s caused by lack of Vitamin A.

Answer 6

Night blindness/xerophthalmia.

Question 7

Name the disease/s caused by lack of Vitamin B.

Answer 7

BERI-BERI

damages the nervous system.

Question 8

Name the disease/s caused by lack of Vitamin C.

Answer 8

Scurvy

blood capillaries are weakened.

Question 9

Name the disease/s caused by lack of Vitamin D.

Answer 9

Rickets

Question 10

What are the water-soluble and fat-soluble vitamins?

Answer 10

Water-soluble: B&C

Fat-soluble: A, D and E.

Question 11

State two plant foods that are rich in protein.

Answer 11

Beans and potatoes.

Question 12

State two plant foods that are rich in protein.

Answer 12

Tofu and sesame seeds.

Question 13

Suggest ONE way the human body uses carbohydrates.

Answer 13

They are easily used by the body for energy

Question 14

Suggest ONE way the human body uses proteins.

Answer 14

the body uses protein to regulate the pH levels.

Question 15

TWO ways by which human beings return carbon dioxide to the atmosphere.

Answer 15

• Respiration

* Combustion

Question 16

State ONE function of the ribs.

Answer 16

The ribs protect the interior organs for example the heart and lungs.

Question 17

Explain what is meant by the term ‘reflex action’.

Answer 17

A reflex action is the body’s rapid, involuntary response to external stimuli, often used in order to protect it from immediate harm.

Question 18

Explain why humans need a circulatory system to transport oxygen, while single-celled
organisms like the amoeba do not.

Answer 18

We are eukaryote which means our cells are more advanced than there’s. And since we have more cells than an amoeba. Our cells carry oxygen to the brain and other organs in the body. An amoeba does not have a brain. So it doesn’t need a circulatory system.

Question 19

• (mitosis, meiosis, identical, different, bulbs, pollen)*
  (i) Asexual reproduction involves a form of cell division known as____________________________________ .
  (ii) The genotype of the offspring and parents is ____________________________in asexual reproduction.

(iii) One method of asexual reproduction in plants involves the use of___________________________________

Answer 19

(i) Mitosis
(ii) identical
(iii) pollen

Question 20

Name TWO instances when a medical abortion could be legally carried out.

Answer 20

• Rape

* Too many health problems.

Question 21

What is Genetic variation?

Answer 21

Genetic variation refers to differences in the genetic makeup of individuals in a population.

Question 22

What is Environmental variation?

Answer 22

The portion of phenotypic variance that is due to differences in the environments to which the individuals in a population have been exposed

Question 23

What is the name of the chemical which forms a gene?

Answer 23

The chemical substance constituting the genes is DNA. It stands for de-oxy ribonucleic acid.

Question 24

Suggest ONE benefit of genetic variation.

Answer 24

Genetic variation helps organisms survive in different climates and environments.

Question 25

Name the microorganism responsible for dengue fever.

Answer 25

✓ The name of the microorganism is the dengue virus