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Perak Trial 2024 Biologi Kertas 1 · Set 1

1
Diagram 1 shows a symbol on plastic bag W. Which of the following is correct about the use of plastic bag W in biological waste management?
2
Diagram 2 shows Paramecium sp. Which of the following A, B, C or D is food vacuole?
3
Which of the following is a fibrous connective tissue?
4
Diagram 3 shows an experiment. After an hour, the Visking tubing shrinks. Which of the following is correct about the experiment?
5
A football player has just finished football practice for two hours. Which of the following drinks A, B, C or D is the most suitable for the player to obtain instant energy after the practise? [The normal range of blood glucose concentration in human is 4.0 – 5.7%]
6
What bond is formed between water molecules?
7
Diagram 4 shows an enzyme action. What are X, Y and Z?
8
Diagram 5 shows the phases in a cell cycle. What is phase T?
9
Diagram 6 shows several stages in a cell division. What is the chromosomal behaviour in stage P?
10
Which equation represents the fermentation that occurs in the yeast?
11
Diagram 7 shows the thoracic cavity of human. What will happen to structure X and Y during inhalation?
12
In what form is the lowest percentage of carbon dioxide transported in the human blood circulatory system?
13
Diagram 8 shows the human digestive system. Where is chyme formed?
14
Table 1 shows the results obtained in an experiment to determine the energy value in coconut flesh. [Specific heat capacity of water = 4.2 J g^-1^ °C^-1^] What is the energy value in the coconut flesh?
15
Which of the following shows the systemic circulation in the human blood circulatory system?
16
Diagram 9 shows the warning signal of Mr. Q's digital watch almost every day due to his habit. Which of the following is correct about the risk of the habit?
17
Diagram 10 shows the graphs for the concentration of antibody in the blood of an individual who was infected with measles. Which curve A, B, C or D shows the concentration of the antibody after the 8th week?
18
Diagram 11 shows a response done by an individual. Which of the following is correct about the response?
19
Mrs. M did a self-blood test by using a glucometer. The test was conducted two hours after she had breakfast. Diagram 12 shows her glucometer reading while Table 2 shows the range of glucose readings in the blood. Based on the reading obtained, which steps should be practiced by Mrs. M? I Reduce the intake of high gluten food II Consume approximately 25 % of carbohydrates in each meal III Increase the intake of cereals during breakfast IV Frequent intake of semi-liquid food such as porridge
20
Which of the following is correct about the regulation of body temperature when the body temperature drops below the normal range?
21
The following information describes the symptoms experienced by an elderly woman due to certain hormone and mineral salt deficiencies. - Bones are easy to break - Height reduction - Stooped posture What are the hormone and mineral salt?
22
Diagram 13 shows a longitudinal section of the testis. What will happen if structure X is blocked?
23
Diagram 14 shows the sigmoid curve for the growth of an organism. What are phases P, Q and R?
24
Which of the following shows the growth curve for a paddy plant?
25
A cement factory is situated nearby a vegetable garden. The farmer found that the quality of his vegetables is decreasing over time. Which of the following statement describes the condition of the vegetables?
26
Diagram 15 shows the graph for light intensity and point X. Which of the following statement is correct?
27
What is the function of potassium in plants?
28
Which part of the Eichhornia crassipes is involved in phytoremediation?
29
The following statement describes a plant's response to a stimulus. > Circadian rhythm response plants against dark conditions. Leaves legumes like the leaves of the locust tree will fold in at night and return open during the day. What is the type of the response?
30
A farmer sprayed insecticide in his tomatoes garden. After a month, the farmer found that the yield of tomatoes was decreasing. Why does this happen?
31
Diagram 16 shows the root system for a type of plant. What is the condition of the habitat that requires the root system?
32
Diagram 17 shows the nitrogen cycle. What is the short-term effect if microorganism X dies?
33
The following information describes the nutrition of a type of bacteria. - Obtaining energy through the oxidation of inorganic substances such as ammonia - Synthesise organic compounds without using light What is the type of nutrition of the bacteria?
34
Diagram 18 shows the quadrat sampling technique which was carried out to identify the coverage percentage of Pleurococcus sp. on a tree trunk. Which of the following quadrat size is the most suitable to use in the field study?
35
Table 3.1 shows the Air Pollution Index (API) for four cities P, Q, R and S. Table 3.2 shows the air quality based on the Air pollution Index (API). Which of the following statements is correct?
36
Which of the following material can be used to produce natural bioplastic?
37
Table 4 shows the results for three monohybrid crosses that were carried out by Mendel between pea plants, Pisum sativum. Calculate and determine the suitable values for K and L.
38
Which of the following pair of genetic diseases is caused by sex-linked genes?
39
In gene therapy, a normal gene is inserted into the patient to replace the abnormal gene by using W. What is W?
40
Diagram 19.1 and Diagram 19.2 show the karyotypes of two individuals with genetic diseases. Which of the following aspects distinguishes both genetic diseases? I Gender II Number of sex chromosomes III Number of autosome IV Type of mutation
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