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Selangor Trial 2025 Biology Kertas 1

1
The following statements are methods for managing one of the biological wastes according to Standard Operating Procedures. > Packed first in autoclave resistant biohazard plastic bags, sterilised in an autoclave for decontamination, and then placed into a biohazard bin. Biohazard plastic bags cannot be thrown into regular waste baskets. What is the biological waste that uses the above method?
2
Diagram 1 shows a type of animal cell. Which of the following characteristics will help the cell function optimally?
3
The following statements are about the movement of substances across the plasma membrane. - Transports large water-soluble molecules following the concentration gradient. - Requires carrier protein. What is the process?
4
Which of the following comparisons is correct about the transport of ions in the root plant and the transport of fructose in the villus of the small intestine?
5
The following information is about food samples X, Y and Z. - X: Reducing sugar, Can dissolve in water - Y: Digested by erepsin enzyme, Synthesises hormone - Z: Main component of plasma membrane, Oestrogen and testosterone hormones What are the suitable food tests for food samples X, Y and Z?
6
Diagram 2 shows the graph of the effect of pH on enzyme activity. What is the enzyme and substrate represented by the graph?
7
Diagram 3 shows a health problem related to the blood circulatory system. One of the treatments used to overcome the problem is by using streptokinase enzyme. Which of the following explains the action of the enzyme?
8
Diagram 4 shows cell division that takes place in cell X and cell Y. Which comparison is correct for X and Y?
9
Diagram 5 shows production of a drink from grapes through process Z. Which of the following steps can speed up process Z?
10
Which of the following diseases causes alveolus to lose elasticity?
11
Diagram 6 shows the structure of a villus. Glucose is transported into X while fatty acid is transported into Y. Which of the following matches is correct about the transport of the substances into X and Y?
12
Diagram 7 shows the position of node Q in the human heart. What is the function of node Q?
13
Diagram 8 shows structure P in the human lymphatic system. Which of the following is the function of structure P? I Filters foreign particles found in lymph II Has macrophages that destroy virus III Contains lymphocytes that produce antibodies IV Prevents the accumulation of tissue fluid
14
Diagram 9 shows a condition experienced by an individual. The individual had a type of injection as treatment. What is the type of immunity obtained after receiving the injection?
15
The following information is about a type immunity. > Mr. X was bitten by a snake and sent to the hospital. He received serum injection. A few months later, he was bitten again by the same type of snake and he received second injection of serum. Why does he need the second injection?
16
Diagram 10 shows the structure of the human brain. Which of the following actions is controlled by structure P?
17
The face of an athlete who finishes a 200 m race becomes red. Which of the following statements explains the condition? I Sweat gland is stimulated II Body temperature increases III Less heat is removed IV Arterioles in the skin dilate
18
Diagram 11 shows the locomotion of a fish. What happens to the movement of the fish if structure S is injured?
19
A woman is at high risk of miscarriage because her uterus is weak. Which of the following treatments can overcome the problem?
20
Diagram 12 shows human growth curve. Which of the following statements is correct about the graph?
21
Diagram 13 shows the structure of the plant root tip. Which of the following statements represent the zones P and Q?
22
Diagram 14 shows the structure of a chloroplast. Which part, labelled A, B, C or D, is the site for carbon dioxide fixation?
23
Diagram 15 shows a cross section of leaf. Which part, A, B, C or D, has the highest rate of photosynthesis?
24
Table 1 shows the results of an experiment to study the effects of macronutrient deficiency in plants. Based on the observation after one month, what nutrients are missing in the culture solutions of P and Q?
25
Diagram 16 shows a movement of substance that occurs in the translocation process. Which of the following processes is involved in the transport of the substance?
26
A young plant has shown the decrease in transpiration rate after the surface area for water absorption decreases. Which of the following actions explains the condition?
27
Diagram 17 shows the germination of a seed. The shoot and the root grow in different directions. What causes the root to grow in that direction?
28
Diagram 18 shows a structure of the female reproductive organ of a flowering plant. Which of the following statements is correct in explaining the condition that will happen if only four pollen grains form pollen tubes on the stigma of the organ?
29
What is the function of hydathode on the leaves of a mangrove tree?
30
The following statement is about a term in ecology. - A group of organisms with similar characteristics - Living in the same habitat - Able to breed What is the term?
31
Which of the following pairs of enzymes are used in the production of fruit juice?
32
Which of the following cells is the product of meiosis?
33
Diagram 19 shows two types of white blood cells. Which of the following is the correct match for cell J and K?
34
Diagram 20 shows the effects of macronutrient P deficiency on leaves. What is macronutrient P?
35
Diagram 21 shows the structure of seed. What is structure R?
36
Diagram 22 shows a pair of homologous chromosomes. T and t represent the alleles for the characteristic of height. What is the genotype and phenotype for the individual that has this pair of chromosome?
37
Diagram 23 shows the changes occuring in the chromosome structure. Which of the following statements is correct about the changes?
38
The following information describes the condition of two individuals, P who has a disease caused by a mutation. - A sterile man with small testis - Has voice and breast similar to a woman Which of the following statement is correct for individual P?
39
Diagram 24 shows the production of genetically modified organisms. What technology is used in the production of these genetically modified organisms?
40
Gene therapy is one of the suggested methods of treatment without the need for surgery or medication. Which of the following diseases can be treated with gene therapy?
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