Zoq

Question 1

Which of the following is a trace element essential for human health, but toxic in excess?

a. Potassium

b. Magnesium

c. Chlorine

d. Zinc

Answer 1

ANSWER D

Question 2

A deficiency in iron can result in which of the following symptoms?

a. Lack of energy and shortness of breath

b. Nerve damage and muscle weakness

c. Increased heart rate and high blood pressure

d. Reproductive failure and scaly skin

Answer 2

ANSWER A

Question 3

Why is carbon considered the key atom for organic chemistry in the human body?

a. It can form bonds with other atoms, making it vital for organic molecules.

b. It is the most abundant element in the body.

c. It is the only element present in proteins.

d. It is only used in energy storage.

Answer 3

ANSWER A

Question 4

Which of the following pairs an element with one of its functions in the human body?

a. Phosphorus – Nerve signaling

b. Chlorine – Fluid balance

c. Potassium – Blood clotting

d. Sodium – Bone formation

Answer 4

ANSWER B

Question 5

Why are electrolytes like potassium and sodium critical for human health?

a. They promote the formation of red blood cells.

b. They help in energy storage within cells.

c. They are necessary for bone strength and muscle growth.

d. They regulate nerve signaling and heartbeat.

Answer 5

ANSWER D

Question 6

What property of water makes it crucial for the regulation of body temperature?
a. Its high specific heat

b. Its high boiling point

c. Its colorless and tasteless nature

d. Its excellent solvent capability

Answer 6

ANSWER A

Question 7

What is the primary function of proteins like actin and myosin in the human body?

a. Oxygen transport

b. Muscle contraction

c. Blood clotting

d. Energy storage

Answer 7

ANSWER B

Question 7

Which compound is essential for the functioning of the thyroid gland?

a. Potassium chloride

b. Silver nitrate

c. Potassium iodide

d. Calcium carbonate

Answer 7

ANSWER C

Question 8

If a person is experiencing hypocalcemia (low calcium levels), what physiological process might be disrupted?
a. Nerve transmission

b. Muscle contraction

c. Enzyme catalysis

d. Oxygen transport

Answer 8

ANSWER A

Question 9

Which of the following carbohydrates is categorized as a polysaccharide?
a. Glucose

b. Sucrose

c. Fructose

d. Starch

Answer 9

ANSWER D

Question 10

In which situation would a person most likely need magnesium sulfate?

a. Preventing seizures in pregnancy complications

b. Treating hyperthyroidism

c. Preventing blood clot formation

d. Treating anemia

Answer 10

ANSWER A

Question 11

What happens in the cell cycle during the G0 phase?
a. Cell enters a resting state and stops dividing

b. DNA is replicated

c. Cell divides into two daughter cells

d. Cell grows rapidly

Answer 11

ANSWER A

Question 12

Which phase of mitosis involves the alignment of sister chromatids along the middle of the cell?

a. Telophase

b. Prophase

c. Metaphase

d. Anaphase

Answer 12

ANSWER C

Question 12

What happens during the G1 phase of interphase?
a. Chromosome separation

b. DNA replication

c. Normal growth and accumulation of resources

d. Division of cytoplasm

Answer 12

ANSWER C

Question 13

Which of the following is NOT a function of organelles in eukaryotic cells?

a. Protein synthesis

b. Chromosome replication

c. Energy production

d. Water absorption

Answer 13

ANSWER D

Question 14

Which organisms are composed of prokaryotic cells?
a. Animals

b. Plants

c. Fungi

d. Bacteria

Answer 14

ANSWER D

Question 15

What is the final stage of mitosis where two new daughter nuclei form?

a. Metaphase

b. Anaphase

c. Telophase

d. Prophase

Answer 15

ANSWER C

Question 16

What type of tissue helps plants carry dissolved sugars?
a. Epidermis

b. Phloem

c. Cambium

d. Xylem

Answer 16

ANSWER: B

Question 17

Which organelle stores substances in the cell?
a. Mitochondria

b. Vacuoles

c. Nucleus

d. Ribosomes

Answer 17

ANSWER B

Question 18

Which phase marks the start of mitosis, where chromatin condenses into visible chromosomes?
a. Prophase

b. Metaphase

c. Telophase

d. Anaphase

Answer 18

ANSWER A

Question 19

In what phase of the cell cycle does the cell prepare for mitosis by duplicating organelles and growing?
a. S phase

b. G1 phase

c. G2 phase

d. Prophase

Answer 19

ANSWER C

Question 20

What phase of mitosis involves the separation of sister chromatids into individual chromosomes?

a. Anaphase

b. Telophase

c. Metaphase

d. Prophase

Answer 20

ANSWER A

Question 21

How do earthworms primarily respire?
a. Through lungs
b. Through gills

c. Through their skin

d. By absorbing oxygen from food

Answer 21

ANSWER C

Question 22

Which of the following is an example of a living organism responding to a stimulus?

a. A fish breathing through gills

b. A fire growing due to the availability of fuel

c. A person turning on a fan in response to heat

d. A plant growing toward light

Answer 22

ANSWER D

Question 23

Which type of ‘taxis’ refers to movement in response to chemical stimuli?

a. Chemotaxis

b. Thigmotaxis

c. Chromotaxis

d. Thermotaxis

Answer 23

ANSWER A

Question 24

Which feature of science highlights that scientific theories are open to change and modification over time?

a. Science is subjective and based on theory

b. Science is based on empirical evidence

c. Science is linked to societies and cultures

d. Science is tentative

Answer 24

ANSWER D

Question 25

What is the final step in the scientific method where a conclusion is drawn?

a. Forming a hypothesis

b. Analyzing data

c. Publishing research

d. Making an observation

Answer 25

ANSWER B

Question 26

What distinguishes an element from a compound?

a. Elements have a variable composition, while compounds do not.

b. A compound cannot be broken down, while an element can.

c. An element consists of one type of atom, while a compound consists of multiple types of atoms.

d. Compounds are not found in nature, but elements are.

Answer 26

ANSWER C

Question 27

Which phase change is exothermic?

a. Melting

b. Sublimation

c. Evaporation

d. Freezing

Answer 27

ANSWER D

Question 28

What type of property is boiling point?

a. Chemical

b. Intensive

c. Physical

d. Extensive

Answer 28

ANSWER C

Question 29

Which property of matter depends on the type of matter rather than its amount?

a. Volume

b. Mass

c. Density

d. Length

Answer 29

ANSWER C

Question 30

Which of the following is an example of an intensive property?

a. Mass

b. Length

c. Volume

d. Boiling point

Answer 30

ANSWER D

Question 31

Which state of matter allows atoms to move rapidly enough to slide over one another?

a. Plasma

b. Gas

c. Liquid

d. Solid

Answer 31

ANSWER C

Question 32

What technique is used to separate a liquid from a solution by heating and condensing the vapor?

a. Chromatography

b. Filtration

c. Simple distillation

d. Evaporation

Answer 32

ANSWER C