Q. What is the primary purpose of using animal cell culture in research?
-
A.
To study cellular processes in a controlled environment
-
B.
To produce large quantities of bacteria
-
C.
To create genetically modified plants
-
D.
To synthesize inorganic compounds
Solution
Animal cell culture allows researchers to study cellular processes in a controlled environment, providing insights into biology and disease.
Correct Answer:
A
— To study cellular processes in a controlled environment
Learn More →
Q. What is the primary purpose of using molecular markers in plant breeding?
-
A.
To increase yield
-
B.
To identify genetic diversity
-
C.
To track inheritance of traits
-
D.
To enhance flavor
Solution
Molecular markers are used to track the inheritance of specific traits in breeding programs.
Correct Answer:
C
— To track inheritance of traits
Learn More →
Q. What is the primary purpose of using vectors in animal cell culture?
-
A.
To enhance cell growth
-
B.
To introduce foreign DNA
-
C.
To provide nutrients
-
D.
To increase cell size
Solution
Vectors are primarily used to introduce foreign DNA into animal cells for various applications, including gene expression and protein production.
Correct Answer:
B
— To introduce foreign DNA
Learn More →
Q. What is the primary purpose of wastewater treatment?
-
A.
To remove pathogens and pollutants
-
B.
To increase nutrient levels
-
C.
To enhance water color
-
D.
To promote algae growth
Solution
The primary purpose of wastewater treatment is to remove pathogens and pollutants to protect public health and the environment.
Correct Answer:
A
— To remove pathogens and pollutants
Learn More →
Q. What is the primary reactant in photosynthesis?
-
A.
Glucose
-
B.
Oxygen
-
C.
Carbon Dioxide
-
D.
Water
Solution
Carbon Dioxide is one of the primary reactants in the process of photosynthesis.
Correct Answer:
C
— Carbon Dioxide
Learn More →
Q. What is the primary reason for the health benefits associated with eating fish?
-
A.
High fiber content
-
B.
Rich in antioxidants
-
C.
Source of omega-3 fatty acids
-
D.
Low in saturated fat
Solution
The primary health benefits of fish consumption are attributed to its high content of omega-3 fatty acids.
Correct Answer:
C
— Source of omega-3 fatty acids
Learn More →
Q. What is the primary reason for the use of antibiotics in poultry farming?
-
A.
Growth promotion
-
B.
Disease prevention
-
C.
Meat quality improvement
-
D.
Egg production enhancement
Solution
The primary reason for the use of antibiotics in poultry farming is disease prevention.
Correct Answer:
B
— Disease prevention
Learn More →
Q. What is the primary regulator of breathing rate?
-
A.
Oxygen levels
-
B.
Carbon dioxide levels
-
C.
Blood pH
-
D.
Lung volume
Solution
Breathing rate is primarily regulated by carbon dioxide levels in the blood, as increased CO2 leads to increased respiratory drive.
Correct Answer:
B
— Carbon dioxide levels
Learn More →
Q. What is the primary regulatory hormone for appetite control?
-
A.
Leptin
-
B.
Ghrelin
-
C.
Insulin
-
D.
Cortisol
Solution
Leptin is produced by adipose (fat) tissue and helps to regulate energy balance by inhibiting hunger.
Correct Answer:
A
— Leptin
Learn More →
Q. What is the primary regulatory mechanism for maintaining blood glucose levels?
-
A.
Insulin and glucagon
-
B.
Gastrin and secretin
-
C.
Bile and pancreatic enzymes
-
D.
Cholecystokinin and amylase
Solution
Insulin and glucagon are the primary hormones that regulate blood glucose levels, with insulin lowering and glucagon raising blood glucose.
Correct Answer:
A
— Insulin and glucagon
Learn More →
Q. What is the primary reservoir for Vibrio parahaemolyticus?
-
A.
Freshwater lakes
-
B.
Saltwater environments
-
C.
Soil
-
D.
Human carriers
Solution
Vibrio parahaemolyticus is primarily found in saltwater environments, particularly in warm coastal waters.
Correct Answer:
B
— Saltwater environments
Learn More →
Q. What is the primary role of allosteric enzymes in metabolic pathways?
-
A.
To catalyze irreversible reactions
-
B.
To provide feedback inhibition
-
C.
To enhance substrate binding
-
D.
To stabilize the transition state
Solution
Allosteric enzymes often provide feedback inhibition, regulating metabolic pathways based on product concentration.
Correct Answer:
B
— To provide feedback inhibition
Learn More →
Q. What is the primary role of bacteria in soil microbiology?
-
A.
Decomposing organic matter
-
B.
Fixing atmospheric nitrogen
-
C.
Producing antibiotics
-
D.
Causing plant diseases
Solution
Bacteria decompose organic matter, recycling nutrients back into the soil.
Correct Answer:
A
— Decomposing organic matter
Learn More →
Q. What is the primary role of cholesterol in the cell membrane?
-
A.
To provide energy
-
B.
To stabilize membrane fluidity
-
C.
To facilitate transport
-
D.
To act as a receptor
Solution
Cholesterol helps to stabilize the fluidity of the membrane, preventing it from becoming too rigid or too fluid.
Correct Answer:
B
— To stabilize membrane fluidity
Learn More →
Q. What is the primary role of hemoglobin in the blood?
-
A.
Transporting nutrients
-
B.
Regulating pH
-
C.
Transporting oxygen
-
D.
Clotting blood
Solution
Hemoglobin's primary role is to transport oxygen from the lungs to the tissues and facilitate carbon dioxide transport back to the lungs.
Correct Answer:
C
— Transporting oxygen
Learn More →
Q. What is the primary role of ligaments in the musculoskeletal system?
-
A.
Connect muscle to bone
-
B.
Connect bone to bone
-
C.
Provide energy for muscle contraction
-
D.
Support blood flow
Solution
Ligaments connect bone to bone, providing stability to joints.
Correct Answer:
B
— Connect bone to bone
Learn More →
Q. What is the primary role of microbes in aquatic environments?
-
A.
Decomposing organic matter
-
B.
Producing oxygen
-
C.
Regulating water temperature
-
D.
Filtering pollutants
Solution
Microbes, particularly phytoplankton, play a crucial role in producing oxygen through photosynthesis in aquatic environments.
Correct Answer:
B
— Producing oxygen
Learn More →
Q. What is the primary role of mRNA in translation?
-
A.
To catalyze peptide bond formation
-
B.
To carry genetic information from DNA to ribosomes
-
C.
To transport amino acids to the ribosome
-
D.
To regulate gene expression
Solution
mRNA carries the genetic information from DNA to the ribosomes, where translation occurs.
Correct Answer:
B
— To carry genetic information from DNA to ribosomes
Learn More →
Q. What is the primary role of nitrogen fixation in plants?
-
A.
To convert atmospheric nitrogen into a usable form
-
B.
To produce glucose during photosynthesis
-
C.
To absorb sunlight for energy
-
D.
To release oxygen into the atmosphere
Solution
Nitrogen fixation is the process by which atmospheric nitrogen is converted into ammonia, a form that plants can use for growth.
Correct Answer:
A
— To convert atmospheric nitrogen into a usable form
Learn More →
Q. What is the primary role of proteins in nucleic acid interactions?
-
A.
Catalyzing chemical reactions
-
B.
Storing genetic information
-
C.
Facilitating transcription and replication
-
D.
Providing structural support
Solution
Proteins, such as transcription factors and polymerases, facilitate the processes of transcription and replication by interacting with nucleic acids.
Correct Answer:
C
— Facilitating transcription and replication
Learn More →
Q. What is the primary role of special proteins in crop improvement?
-
A.
Enhancing photosynthesis
-
B.
Increasing resistance to pests
-
C.
Improving soil quality
-
D.
Boosting water retention
Solution
Special proteins can enhance a plant's resistance to pests, making them more resilient and improving crop yields.
Correct Answer:
B
— Increasing resistance to pests
Learn More →
Q. What is the primary role of the autonomic nervous system?
-
A.
Controlling voluntary movements
-
B.
Regulating involuntary bodily functions
-
C.
Processing sensory information
-
D.
Coordinating muscle contractions
Solution
The autonomic nervous system regulates involuntary bodily functions such as heart rate, digestion, and respiratory rate.
Correct Answer:
B
— Regulating involuntary bodily functions
Learn More →
Q. What is the primary role of the cardiovascular system?
-
A.
To digest food
-
B.
To transport oxygen and nutrients
-
C.
To regulate temperature
-
D.
To produce hormones
Solution
The primary role of the cardiovascular system is to transport oxygen, nutrients, hormones, and waste products throughout the body.
Correct Answer:
B
— To transport oxygen and nutrients
Learn More →
Q. What is the primary role of the endocrine system in pharmacology?
-
A.
Regulating blood pressure
-
B.
Secreting hormones that affect drug metabolism
-
C.
Controlling muscle contractions
-
D.
Facilitating nutrient absorption
Solution
The endocrine system secretes hormones that can significantly affect drug metabolism and overall pharmacological responses.
Correct Answer:
B
— Secreting hormones that affect drug metabolism
Learn More →
Q. What is the primary role of the enteric nervous system?
-
A.
Regulation of blood pressure
-
B.
Control of gastrointestinal motility and secretion
-
C.
Coordination of respiratory rate
-
D.
Regulation of heart rate
Solution
The enteric nervous system controls gastrointestinal motility and secretion, functioning independently of the central nervous system.
Correct Answer:
B
— Control of gastrointestinal motility and secretion
Learn More →
Q. What is the primary role of the gallbladder?
-
A.
Storage of bile
-
B.
Production of bile
-
C.
Absorption of fats
-
D.
Filtration of blood
Solution
The gallbladder's primary role is to store and concentrate bile produced by the liver.
Correct Answer:
A
— Storage of bile
Learn More →
Q. What is the primary role of the hypothalamus in homeostasis?
-
A.
Regulating heart rate
-
B.
Controlling body temperature
-
C.
Managing blood glucose levels
-
D.
Stimulating digestion
Solution
The hypothalamus plays a key role in regulating body temperature and maintaining homeostasis through various mechanisms.
Correct Answer:
B
— Controlling body temperature
Learn More →
Q. What is the primary role of the immune system?
-
A.
To transport oxygen
-
B.
To protect against pathogens
-
C.
To regulate metabolism
-
D.
To maintain homeostasis
Solution
The primary role of the immune system is to protect the body against pathogens and foreign invaders.
Correct Answer:
B
— To protect against pathogens
Learn More →
Q. What is the primary role of the large intestine?
-
A.
Digestion of proteins
-
B.
Absorption of water
-
C.
Production of bile
-
D.
Secretion of hormones
Solution
The primary role of the large intestine is to absorb water and electrolytes from indigestible food matter.
Correct Answer:
B
— Absorption of water
Learn More →
Q. What is the primary role of the microbiome in human health?
-
A.
Producing toxins
-
B.
Digesting food and synthesizing vitamins
-
C.
Causing diseases
-
D.
Regulating body temperature
Solution
The microbiome plays a crucial role in digesting food, synthesizing vitamins, and maintaining overall health.
Correct Answer:
B
— Digesting food and synthesizing vitamins
Learn More →
Showing 571 to 600 of 1754 (59 Pages)