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WorksheetsHSB Paper 1 2019 (1-20)
Total questions: 20
Worksheet time: 10mins
Plants obtain nitrates
directly from nitrogen gas
by the process of photosynthesis
when nitrates diffuse into the stomata
by absorbing nitrates through their roots
Which of the following is an example of a terrestrial food chain?
Seaweed → fish →seagull
Pondweed →tadpole →fish
plant →grasshopper → bird
pondweed → tadpole → duck
In which part of the following structures does photosynthesis occur?
Ribosomes
Golgi bodies
Chloroplasts
Mitochondria
This question refers to the diagram of a red blood cell before and after being placed in a concentrated salt solution for one hour.
The change in the red blood cell shown in in II occurs because water
enters the cell by osmosis
leaves the cell by osmosis
leaves the cell by diffusion
enters the cell by diffusion
This question refers to the following aquatic food chain;
Phytoplankton → zooplankton → fish →water bird
The producer in this food chain is the;
fish
water bird
zooplankton
phytoplankton
To which of the following food groups do oats belong?
Fruits
Staples
Legumes
Vegetables
Which of the following statements is true about pepsin?
Is secreted in pancreatic juice
converts proteins to amino acids
converts proteins to polypeptides
functions best in alkali conditions
Which of the following vitamins can be produced by the skin as well as obtained from food?
Vitamin A
Vitamin B
Vitamin C
Vitamin D
This item refers to the pie chart which shows the proportion of food groups in a balanced meal.
A person diagnosed with diabetes melitus should
increase at intake
decrease protein intake
decrease carbohydrate intake
increase fruits and vegetable intake
Which of the following teeth aid in grinding teeth into smaller pieces?
Incisors and premolars
Molars and premolars
Incisors and canines
Canines and molars
Kwashiokor is a deficiency disease caused by a lack of
fats
proteins
glygogen
carbohydrates
Which of the following represents the correct sequence of events in the formation of a dental cavity?
I. Abscess
II. Dentine decay
III. Enamel decay
IV. Plaque formation
I, II, III, IV
II, I, III, IV
IV, II, III, I
IV, III, II, I
Refer to the diagram which shows a part of the human digestive tract
Which organ is responsible for the digestion of protein only?
A
B
C
D
The process of egestion is defined as the removal of
toxic waste
non-toxic waste
metabolic wate
undigested waste
This item refers to the following table which shows the function of some structures of the respiratory system.
The structures labelled I, II, III and IV are
I Epiglottis, II Larynx, III Nasal passage, IV Bronchus
I Bronchus, II Nasal passage, III Larynx, IV Epiglottis
I Nasal passage, II Epiglottis, III Bronchus, IV Larynx
I Larynx, II Bronchus, III Epiglottis, IV Nasal passage
Which of the following reagents is used to test for glucose?
Iodine solution
Copper sulphate
Sodium hydroxide
Benedict's solution
To deliver mouth -to mouth resuscitation, the following steps should steps should be taken:
I. Press the head back with one hand and push jaw upward with the other.
II. Pinch the nose and seal your mouth with the causality's mouth
III. Give four quick blows into the causality's mouth and repeat every five seconds
IV. Place causality on their back
I, II, II, IV
II,III,IV,I
III,IV,I,II
IV,I, II,III
Which of the following substances found in cigarette smoke is addictive?
Tar
Nicotine
Carbon Dioxide
Carbon monoxide
Which of the following is NOT a characteristic of gaseous exchange surfaces?
Moist
Thin-walled
Small surface area
Well supplied with gases
This item refers to the diagram of a cell
This diagram MOST likely represents a
liver cell
phagocyte
lymphocyte
red blood cell
