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Kedah Trial 2025 Biology Kertas 1

1
Biologists need to communicate their research findings. Which of the following is not a tool using for communicating in biology?
2
Diagram 1 shows tissue X that found under the skin dermis and on the surface of all main organs. Which of the matches between tissue X and its function is correct?
3
Diagram 2 shows the structures of plasma membrane that found in cells of all organisms. What is P?
4
Diagram 3 is a condition of erythrocyte after being immersed in salt solution. Which of the following statements is correct about the condition of erythrocyte?
5
Which of the organic substances contains nitrogen element?
6
Diagram 4 shows lactase action toward the substrate that takes place in the ileum of an individual. The individual is infected by malaria disease and suffering high fever. Which of the following are the effects of the disease infection on the lactase action? I Less glucose and galactose are produced II Less lactase-galactose complex formed III Lactase unable to compliment with lactose due to the change of active site IV Effective collision frequency between lactase and lactose increases
7
Diagram 5 shows a phase in the mitosis observed under microscope. What is the phase shown in Diagram 5?
8
Diagram 6 shows the phases in a cell cycle. Which of the following is correctly matched?
9
Yeast carries out aerobic respiration when the presence of oxygen in the surrounding is sufficient. However, when oxygen absent, yeast undergoes fermentation to generate energy. What substance is produced by both aerobic respiration and fermentation in yeast?
10
Alveolus is the human respiratory structure for gaseous exchange. Which of the following characteristics allows the transportation of respiratory gases occurs rapidly?
11
Diagram 7 shows epithelial cells of gastric gland in the wall of stomach. Cell P, Q and R involve in the digestion in the stomach. Which of the following statements explains the role of cell R in the digestion of protein?
12
Diagram 8 shows a villus structure in human small intestine. A student has eaten a bread spread with margarine. After 20 minutes what substances will be transported by vessel X and vessel Y?
13
Which of the following leucocytes contains heparin?
14
Table 1 shows blood vessels that found in human body. What is P, Q, R and S?
15
Human immunodeficiency virus (HIV) attacks human immune system. Which of the following is the effect of HIV on the human's health?
16
Diagram 9 shows the concentration of antibody in blood of a student after injection due to poisonous snake bite. Which of the following statements explain the injection received by the student? I The injection contains suspension of weakened pathogen II The injection contains antiserum that has specific antibody III The injection gives protection immediately IV The injection can stimulate active immunity artificially
17
Diagram 10 shows the structure of human brain. Which of the parts A, B, C or D is the main gland of the endocrine system?
18
A worker experienced an accident in a factory. The part labelled X in Diagram 11 was cut due to the injury. What is the effect faced by the worker?
19
When body temperature drops below normal range caused by heat loss to surrounding, regulation process by effectors will occur. Which of the following physical responses involved are correct? I Erector muscles contract II Arteriole in the skin constricts III More adrenaline is secreted IV Skeletal muscles less contract and relax
20
Diagram 12 shows two stages that involved in weightlifting activity. How do the arm muscles and elbow joint act when movement occurs from stage 1 to stage 2?
21
Which of the following is the bone that found in axial skeleton?
22
Diagram 13 shows a metamorphosis of an insect. Which of the following is correct about N?
23
What is the structure that transports waste products from foetus to mother?
24
Diagram 14 shows the longitudinal section of eudicot plant shoot. Which of the following match between growth zone in Diagram 14 with the cell is correct?
25
Diagram 15 shows some substances found in the plant cells. Which of the areas A, B, C or D represents the product of water photolysis?
26
Diagram 16 shows two surrounding factors that affect the rate of photosynthesis. Which points of the graphs in Diagram 16 show that the photosynthesis rate is limited by the carbon dioxide concentration?
27
What nutrient is needed to avoid the problems of leaves become distorted and lobed?
28
A balsam plant has been immersed in water containing black dye. After 24 hours, the plant was removed and cross section is done on the sections of the root and the stem. Which diagram shows the results obtained?
29
Xylem vessel is adapted to transport water and mineral from the root to the leaves. Which statement correctly explains the adaptation of a xylem vessel for the function?
30
Diagram 17 shows a type of response that occurs on plant when it is touched. What is the type of response shown?
31
Diagram 18 shows the structure of a flower. Which of the parts A, B, C or D does double fertilisation occur?
32
Table 2 shows information about the characteristics of flower of fruit A and fruit B. Based on Table 2, which of the match is correct?
33
Diagram 19 shows a water lettuce that lives in a habitat. Which of the following matches is correct about the plant shown in Diagram 19?
34
According to Linnaeus hierarchy system, phylum chordata can be further divided into five classes which are mammal, reptile, bird, amphibian and fish. Eagle, snake and bear are three examples of organisms classified in chordata phylum. Which common feature causes the three organisms are classified in the same phylum?
35
Which of the following sequences of food chain is correct?
36
The surface of rivers will be grown by algae rapidly when the nitrate content in the rivers increases. What is the main source of nitrate in the rivers?
37
A husband and his wife have two children. One of them has blood group A while another one has blood group O. The children's father has blood group B. What is the probability of the third child to inherit blood group B?
38
There are two types of earlobes in human which are free earlobes and attached earlobes. The trait of earlobes is controlled by one single gene. Diagram 20 shows the inheritance of earlobes in a family. Based on Diagram 20, which two individuals are heterozygous for earlobes characteristic?
39
Which of the following human characteristics shows discontinuous variation?
40
Nowadays, diabetes mellitus disease can be treated using insulin produced artificially as compared to the older days. Which of the following shows the name of technique and the structure of bacteria that produce insulin?
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