Q. What is the primary function of the flower's petals? (2022)
A.
Attract pollinators
B.
Protect the ovary
C.
Support the flower
D.
Store nutrients
Show solution
Solution
Petals are primarily designed to attract pollinators with their color and fragrance.
Correct Answer: A — Attract pollinators
Learn More →
Q. What is the primary function of the G2 phase? (2020)
A.
Cell growth
B.
DNA replication
C.
Preparation for mitosis
D.
Cytokinesis
Show solution
Solution
The G2 phase is primarily for preparing the cell for mitosis, including the synthesis of proteins necessary for cell division.
Correct Answer: C — Preparation for mitosis
Learn More →
Q. What is the primary function of the genetic code? (2020)
A.
To store genetic information
B.
To regulate gene expression
C.
To determine protein structure
D.
To replicate DNA
Show solution
Solution
The genetic code determines the sequence of amino acids in proteins, thus influencing their structure and function.
Correct Answer: C — To determine protein structure
Learn More →
Q. What is the primary function of the Golgi apparatus? (2021)
A.
Protein synthesis
B.
Modification and packaging of proteins
C.
Lipid synthesis
D.
Cell division
Show solution
Solution
The Golgi apparatus modifies, sorts, and packages proteins for secretion or delivery to other organelles.
Correct Answer: B — Modification and packaging of proteins
Learn More →
Q. What is the primary function of the hormone aldosterone? (2022)
A.
Regulate metabolism
B.
Control blood pressure
C.
Stimulate uterine contractions
D.
Increase blood sugar
Show solution
Solution
Aldosterone helps regulate blood pressure by controlling sodium and water balance in the kidneys.
Correct Answer: B — Control blood pressure
Learn More →
Q. What is the primary function of the hormone cortisol? (2023)
A.
Regulate metabolism
B.
Control stress response
C.
Stimulate growth
D.
Increase blood sugar
Show solution
Solution
Cortisol is a steroid hormone that helps control the body's stress response and regulates metabolism, immune response, and blood sugar levels.
Correct Answer: B — Control stress response
Learn More →
Q. What is the primary function of the hormone oxytocin? (2023)
A.
Regulate blood pressure
B.
Stimulate uterine contractions
C.
Control metabolism
D.
Increase blood sugar
Show solution
Solution
Oxytocin is primarily responsible for stimulating uterine contractions during childbirth.
Correct Answer: B — Stimulate uterine contractions
Learn More →
Q. What is the primary function of the immune system? (2022)
A.
To regulate body temperature
B.
To protect against diseases
C.
To digest food
D.
To circulate blood
Show solution
Solution
The primary function of the immune system is to protect the body against diseases and infections.
Correct Answer: B — To protect against diseases
Learn More →
Q. What is the primary function of the lymphatic system? (2022)
A.
Transporting oxygen
B.
Removing waste products
C.
Transporting lymph and aiding immune function
D.
Clotting blood
Show solution
Solution
The lymphatic system is responsible for transporting lymph, a fluid that contains infection-fighting white blood cells, and plays a crucial role in the immune system.
Correct Answer: C — Transporting lymph and aiding immune function
Learn More →
Q. What is the primary function of the male reproductive system? (2020)
A.
Production of eggs
B.
Production of sperm
C.
Nourishment of the embryo
D.
Menstruation
Show solution
Solution
The primary function of the male reproductive system is the production of sperm, which is essential for fertilization.
Correct Answer: B — Production of sperm
Learn More →
Q. What is the primary function of the myelin sheath in neurons? (2021)
A.
To protect the neuron from damage
B.
To increase the speed of nerve impulse transmission
C.
To provide nutrients to the neuron
D.
To facilitate synaptic transmission
Show solution
Solution
The myelin sheath acts as an insulator and increases the speed of nerve impulse transmission through saltatory conduction.
Correct Answer: B — To increase the speed of nerve impulse transmission
Learn More →
Q. What is the primary function of the phloem in flowering plants? (2023)
A.
Transport of water
B.
Transport of food
C.
Support
D.
Storage
Show solution
Solution
Phloem is responsible for the transport of food (sugars) produced during photosynthesis from leaves to other parts of the plant.
Correct Answer: B — Transport of food
Learn More →
Q. What is the primary function of the placenta during pregnancy? (2023)
A.
To provide oxygen and nutrients to the fetus
B.
To produce hormones only
C.
To protect the fetus from all diseases
D.
To facilitate childbirth
Show solution
Solution
The placenta provides oxygen and nutrients to the developing fetus and removes waste products.
Correct Answer: A — To provide oxygen and nutrients to the fetus
Learn More →
Q. What is the primary function of the renal pelvis? (2022)
A.
Filtration of blood
B.
Storage of urine
C.
Transport of urine to the bladder
D.
Production of urine
Show solution
Solution
The renal pelvis collects urine from the collecting ducts and transports it to the ureter.
Correct Answer: C — Transport of urine to the bladder
Learn More →
Q. What is the primary function of the ribosomes? (2019)
A.
Energy production
B.
Protein synthesis
C.
Lipid synthesis
D.
DNA replication
Show solution
Solution
Ribosomes are responsible for protein synthesis by translating messenger RNA into polypeptide chains.
Correct Answer: B — Protein synthesis
Learn More →
Q. What is the primary function of the root system in flowering plants? (2020)
A.
Photosynthesis
B.
Anchorage and absorption of water
C.
Reproduction
D.
Storage of food
Show solution
Solution
The primary function of the root system is to anchor the plant and absorb water and nutrients from the soil.
Correct Answer: B — Anchorage and absorption of water
Learn More →
Q. What is the primary function of the rough endoplasmic reticulum? (2019)
A.
Lipid synthesis
B.
Protein synthesis
C.
Energy production
D.
Cell division
Show solution
Solution
The rough endoplasmic reticulum is studded with ribosomes and is primarily involved in the synthesis of proteins.
Correct Answer: B — Protein synthesis
Learn More →
Q. What is the primary function of the skeletal system in locomotion? (2019)
A.
A. To produce blood cells
B.
B. To store minerals
C.
C. To provide a framework for muscle attachment
D.
D. To protect internal organs
Show solution
Solution
The primary function of the skeletal system in locomotion is to provide a framework for muscle attachment, enabling movement.
Correct Answer: C — C. To provide a framework for muscle attachment
Learn More →
Q. What is the primary function of the skeletal system? (2021)
A.
Movement
B.
Protection of organs
C.
Mineral storage
D.
All of the above
Show solution
Solution
The skeletal system serves multiple functions including movement, protection of vital organs, and mineral storage.
Correct Answer: D — All of the above
Learn More →
Q. What is the primary function of the small intestine in digestion? (2020)
A.
Absorption of nutrients
B.
Mechanical digestion
C.
Chemical digestion
D.
Storage of food
Show solution
Solution
The primary function of the small intestine is the absorption of nutrients from digested food.
Correct Answer: A — Absorption of nutrients
Learn More →
Q. What is the primary function of the surfactant in the alveoli? (2019)
A.
Increase surface tension
B.
Decrease surface tension
C.
Facilitate gas exchange
D.
Prevent infection
Show solution
Solution
Surfactant reduces surface tension in the alveoli, preventing their collapse and aiding in gas exchange.
Correct Answer: B — Decrease surface tension
Learn More →
Q. What is the primary function of thyroid hormones? (2022)
A.
Regulate metabolism
B.
Control blood pressure
C.
Stimulate growth
D.
Manage stress response
Show solution
Solution
Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), are crucial for regulating metabolism in the body.
Correct Answer: A — Regulate metabolism
Learn More →
Q. What is the primary function of white blood cells? (2022)
A.
Transporting oxygen
B.
Clotting blood
C.
Fighting infections
D.
Transporting nutrients
Show solution
Solution
White blood cells are part of the immune system and are primarily responsible for fighting infections and foreign invaders.
Correct Answer: C — Fighting infections
Learn More →
Q. What is the primary goal of gene therapy? (2021)
A.
To clone organisms
B.
To replace defective genes
C.
To produce vaccines
D.
To enhance crop traits
Show solution
Solution
The primary goal of gene therapy is to replace defective genes in order to treat or prevent diseases.
Correct Answer: B — To replace defective genes
Learn More →
Q. What is the primary goal of sustainable development? (2023)
A.
Maximizing economic growth
B.
Preserving natural resources for future generations
C.
Increasing industrial output
D.
Reducing population growth
Show solution
Solution
The primary goal of sustainable development is to meet the needs of the present without compromising the ability of future generations to meet their own needs.
Correct Answer: B — Preserving natural resources for future generations
Learn More →
Q. What is the primary mechanism by which nutrients are transported in phloem?
A.
Diffusion
B.
Bulk flow
C.
Active transport
D.
Osmosis
Show solution
Solution
Nutrients in phloem are primarily transported by bulk flow, which is driven by pressure differences.
Correct Answer: B — Bulk flow
Learn More →
Q. What is the primary mechanism of evolution proposed by Charles Darwin?
A.
Natural Selection
B.
Genetic Drift
C.
Mutation
D.
Gene Flow
Show solution
Solution
Charles Darwin proposed the mechanism of evolution known as Natural Selection, which explains how species adapt and evolve over time based on environmental pressures.
Correct Answer: A — Natural Selection
Learn More →
Q. What is the primary method of reproduction in bacteria? (2021)
A.
Binary fission
B.
Budding
C.
Fragmentation
D.
Sexual reproduction
Show solution
Solution
Bacteria primarily reproduce asexually through binary fission, where a single cell divides into two identical cells.
Correct Answer: A — Binary fission
Learn More →
Q. What is the primary mode of nutrition in the kingdom Animalia? (2023)
A.
Autotrophic
B.
Heterotrophic
C.
Saprophytic
D.
Parasitic
Show solution
Solution
The primary mode of nutrition in the kingdom Animalia is heterotrophic.
Correct Answer: B — Heterotrophic
Learn More →
Q. What is the primary mode of nutrition in the kingdom Plantae? (2022)
A.
Heterotrophic
B.
Saprophytic
C.
Autotrophic
D.
Parasitic
Show solution
Solution
Plants primarily exhibit autotrophic nutrition through photosynthesis.
Correct Answer: C — Autotrophic
Learn More →
Showing 301 to 330 of 1221 (41 Pages)