Zoq Flashcards
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 D
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 A
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 A
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 B
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 D
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 A
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 B
Which compound is essential for the functioning of the thyroid gland?
a. Potassium chloride
b. Silver nitrate
c. Potassium iodide
d. Calcium carbonate
ANSWER C
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 A
Which of the following carbohydrates is categorized as a polysaccharide?
a. Glucose
b. Sucrose
c. Fructose
d. Starch
ANSWER D
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 A
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 A
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 C
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 C
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 D
Which organisms are composed of prokaryotic cells?
a. Animals
b. Plants
c. Fungi
d. Bacteria
ANSWER D
What is the final stage of mitosis where two new daughter nuclei form?
a. Metaphase
b. Anaphase
c. Telophase
d. Prophase
ANSWER C
What type of tissue helps plants carry dissolved sugars?
a. Epidermis
b. Phloem
c. Cambium
d. Xylem
ANSWER: B
Which organelle stores substances in the cell?
a. Mitochondria
b. Vacuoles
c. Nucleus
d. Ribosomes
ANSWER B
Which phase marks the start of mitosis, where chromatin condenses into visible chromosomes?
a. Prophase
b. Metaphase
c. Telophase
d. Anaphase
ANSWER A
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 C
What phase of mitosis involves the separation of sister chromatids into individual chromosomes?
a. Anaphase
b. Telophase
c. Metaphase
d. Prophase
ANSWER A
How do earthworms primarily respire?
a. Through lungs
b. Through gills
c. Through their skin
d. By absorbing oxygen from food
ANSWER C
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 D
Which type of ‘taxis’ refers to movement in response to chemical stimuli?
a. Chemotaxis
b. Thigmotaxis
c. Chromotaxis
d. Thermotaxis
ANSWER A
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 D
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 B
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 C
Which phase change is exothermic?
a. Melting
b. Sublimation
c. Evaporation
d. Freezing
ANSWER D
What type of property is boiling point?
a. Chemical
b. Intensive
c. Physical
d. Extensive
ANSWER C
Which property of matter depends on the type of matter rather than its amount?
a. Volume
b. Mass
c. Density
d. Length
ANSWER C
Which of the following is an example of an intensive property?
a. Mass
b. Length
c. Volume
d. Boiling point
ANSWER D
Which state of matter allows atoms to move rapidly enough to slide over one another?
a. Plasma
b. Gas
c. Liquid
d. Solid
ANSWER C
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 C
