Republic of the Philippines
Department of Education
REGION VII – CENTRAL VISAYAS
SCHOOLS DIVISION OF CEBU PROVINCE
TINUBDAN INTEGRATED SCHOOL
TINUBDAN, DAANBANTAYAN, CEBU
SEMIFINAL
SCIENCE X
Name: __________________________________________________________
Score: _________________
Grade and Sec.: ________________________________________________
Date: __________________
GENERAL DIRECTIONS: Read, understand and follow instructions. Read each question/statement twice before giving your
final answer. Write your answer carefully. Strictly NO ERASURES. Do not forget to write your name. Start answering when
your teacher tells you to do so.
I. MULTIPLE CHOICE: Read each statement/ question carefully. Choose your answer from the choices given. Encircle the
letter that corresponds to your answer.
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1. What Biomolecule is considered as the chief of energy?
A. Protein
B. Fats
C. Lipids
D. Carbohydrates
2. There are sugar units formed upon hydrolysis, the following are the classification of saccharides EXCEPT;
A. Hexasaccharides
B. Polysaccharides
C. Disaccharides
D. Monosaccharides
3. Which of the following is not an importance of Carbohydrates?
A. They store energy which is form of the polysaccharide’s glycogen in animals and starch in
plants
B. They didn’t provide support to other organic compound such as in the nucleic acid
C. They are the main source of energy of all living organisms
D. Together with protein, they provide the structural support and serve as components for cells
4 Lipids are insoluble in water because lipid molecules are__________________?
A. hydrophilic
B. Neutral
C. Hydrophobic
D. Zwitter ions
5. Nutritional chemist have found that burning 1 gram of fat release twice the amount of heat energy as
burning 1 gram of starch. Based on this information, which type of biomolecules would cause a person to
gain more weight?
A. carbohydrate
B. fat
C. proteins
D. nucleic acid
6. It is the simplest form of carbohydrates.
A. Polysaccharides
B. Saccharide
C. Monosaccharides D.Polysaccharides
7. It is complex carbohydrates.
A. Polysaccharides B. Saccharide
C. Monosaccharides D.Polysaccharides
8. What are the sources of Galactose?
A. Fruit Juices
B. Vegetables
C. Dairy Products
D. Milk and Milk Products
9. What type of organic compound contains C,H,O,N,P?
A. Protein
B. Nucleic acid
C. Lipids
D. Carbohydrates
10. Which of the following is a correct pair?
A. triglyceride: polysaccharide
B. glucose: disaccharide
C. starch: polysaccharide
D. sucrose: monosaccharide
11. If you are a coach of an athlete and preparing for a big event the night before the game, what
biomolecule are you going to give to your trainee?
A. Protein
B. Nucleic acid
C. Lipids
D. Carbohydrates
12. Which of the following is the correct formula/no. of elements of Disaccharide?
A. 𝐶12 𝐻12 𝑂12
B. 𝐶12 𝐻22 𝑂11
C. 𝐶12 𝐻24 𝑂12
D. 𝐶24 𝐻12 𝑂12
13. The following are components of Proteins, EXCEPT;
A. Carbon
B. Oxygen
C. Chlorine
D. Nitrogen
14. What are the monomers of proteins?
A. Saccharides
B. Amino Acids
C. Fats
D. Sugar
15. Which type of lipid is solid at room temperature and is found in foods like cheese and red meat?
A. Saturated fats
B. Unsaturated fats
C. Waxes
D. Oils
16. Which type of lipid is a liquid at room temperature and comes from foods like nuts and fish?
A. Saturated fats
B. Unsaturated fats
C. Waxes
D. Oils
17. Maria was not feeling well for 4 consecutive days she experienced dizziness, shaking, irritability and fast
heartbeat. Her mom decided to bring her to the hospital, the doctor did some laboratory test and found
out that she has hypoglycemia. What food/biomolecules is best for Maria to take?
A. Protein
B. Fats
C. Lipids
D. Carbohydrates
18. Mark is obese, he is having trouble in breathing every time he moves a lot. The doctor advise him to
control or minimize eating foods containing __________________.
A. proteins
B. Fats
C. Vitamins
D. Nucleic acid
19. Josh want to achieve and maintain a healthy weight and build muscle. What food should Josh be
taking?
A. rich in fats
B. rich in minerals
C. rich in protein
D. rich in carbohydrates
20. Nucleotides are building block of __________________.
A. Protein
B. Fats
C. Nucleic acid
D. Carbohydrates
21. A balloon with a volume of 2.0 L is filled with a gas at 3 atmospheres. If the pressure is reduced to 1.2
atmospheres without a change in temperature, what will be the volume of the balloon?
A. 1 L
B. 2 L
C. 4 L
D. 5 L
22. A 10-liter sample of gas is held in a container under a pressure of 1.5 atm. The gas is then compressed to
7.5 liters. Find the pressure if the temperature is kept unchanged.
A. 1.3 atm
B. 1.7 atm
C. 2.0 atm
D. 50 atm
23. Which statement describes the volume-temperature relationship in gases at constant pressure?
A. As temperature decreases, volume increases.
B. As temperature increases, volume also increases.
C. As temperature increases, volume remains constant.
D. As temperature remains constant, volume increases.
24. What is the equivalent value of 25⁰C in Kelvin?
A. 11 K
B. 248.15 K
C. 298.15 K
D. 6,829 K
II: PROBLEM SOLVING
Solve the following:
1. A gas occupies 11.2 liters at 0.860 atm. What is the pressure if the volume becomes 15.0 L?
2. If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of
2.50 atm?
3. A 600.0 mL sample of nitrogen is warmed from 77.0 °C to 86.0 °C. Find its new volume if the pressure
remains constant.
4. A gas syringe contains 42.3 milliliters of a gas at 98.15 °C. Determine the volume that the gas will occupy if
the temperature is decreased to -18.50 °C.
Prepared by: Ms. Norigen Itang