LET Review (Majorship/Gen Ed Science)
Quiz by Revelyn
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- Q1
1. Which is of the following is NOT part of the human circulatory system?
C. Lungs
D. Artery
A. Vein
B. Heart
60s - Q2
2. An unknown organism has 36 chromosomes in its lung cell. How many chromosomes does it have in its sex cells?
C. 36
D. 72
B. 18
A. 9
60s - Q3
3. Which of the following is NOT a characteristic of a red blood cell?
C. It carries nutrients to all body parts
A. It cannot self-divide
B. It contains hemoglobin
D. It transports oxygen around the body
60s - Q4
Which of the following describes the blood vessel that carries blood from the liver to the heart correctly?
B. It carries deoxygenated blood
A. Its cell is one-cell thick
D. It carries blood that has equal amounts of oxygen and carbon dioxide
C. It carries oxygenated blood
60s - Q5
Which two systems are involved in the removal of carbon dioxide from the body?
C. Circulatory and excretory systems
D. Circulatory and respiratory systems
A. Digestive and excretory systems
B. Digestive and respiratory systems
60s - Q6
Plasma is a component of blood. Which of the following statements about plasma is incorrect?
C. It transports amino acids around the body
B. It transports glucose around the body
D. It transports mineral salts around the body
A. It transports oxygen around the body
60s - Q7
Which of the following about diffusion is incorrect?
B. It is the overall movement of water molecules only
A. It can occur through a selective membrane
C. It allows ink molecules to move and spread throughout the water
D. It involves the movement of molecules from a region of higher concentration to a region of lower concentration.
60s - Q8
Which of the following about the cell wall of a plant is correct?
It allows all substances to pass through it
It allows some substances to pass through it.
It allows large substances to pass through it
It allows no substances to pass through it.
60s - Q9
A student had a meal that consisted of egg whites. Which of the following is the main product of digestion from the meal?
D. Amino Acid
B. Glycerol
A.Glucose
C. Fatty Acid
60s - Q10
Which of the following activities will most likely NOT cause food poisoning?
B. Eating fruits without washing them with water
A. Eating raw oyster
D. Handling meat and vegetables with the same knife.
C. Washing hands with soap before handling food
60s - Q11
Which of the following will result in the production of amino acids?
C. Mixture of carbohydrate and starch
A. Mixtureof protease and starch
D. Mixture of carbohydrates and egg white
B. Mixture of protease and egg white
60s - Q12
An equal number of identical potato strips were placed in a salt solution and in distilled water. Which of the following best describes the result?
C. The length of the potato strips increased in the salt solution but decreased in distilled water.
A. The length of the potato strips increased in both the salt solution and distilled water
B. The length of the potato strips decreased in both the salt solution and distilled water
D. The length of the potato strips decreased in the salt solution but increased in distilled water.
60s - Q13
Study the diagram below on the movement of perfume molecules.
Which of the following describes such movement correctly?
D. It occurs from a region of higher concentration to a region of lower concentration.
B. It occurs without the presence of a partially permeable membrane.
A. It requires the presence of a partially permeable membrane
C. It occurs from a region of lower concentration to a region of a higher concentration
60s - Q14
Earthworms help plants to grow well in the soil. Which of the following best explains why adding salt to the soil can kill the earthworm?
A. Water will leave the cell of the earthworm via osmosis
B. Water will leave the cells of the earthworms via diffusion
D. Water will move from a region of higher concentration to a region of lower concentration and enter the cells of the earthworm.
C. Salt will move from a region of higher concentration to a region of lower concentration and enter the cells of the earthworm.
60s - Q15
In an experiment, four potato strips were immersed in four salt solutions of different concentrations. The mass of each potato strip was measured before and after the experiment. The table below shows the results.
Which of the salt solutions has the highest water concentration?
W
X
Z
Y
60s
