Biology (School & UG)
Q. What is produced during the light reactions of photosynthesis?
-
A.
Glucose
-
B.
Oxygen
-
C.
NADPH
-
D.
Both Oxygen and NADPH
Solution
Both oxygen and NADPH are produced during the light reactions.
Correct Answer: D — Both Oxygen and NADPH
Q. What is produced during the light-dependent reactions of photosynthesis?
-
A.
Glucose
-
B.
Oxygen
-
C.
NADPH
-
D.
Both B and C
Solution
Oxygen and NADPH are produced during the light-dependent reactions.
Correct Answer: D — Both B and C
Q. What is recombinant DNA technology primarily used for?
-
A.
To create genetically identical organisms
-
B.
To produce proteins, such as insulin
-
C.
To sequence entire genomes
-
D.
To analyze gene expression
Solution
Recombinant DNA technology is used to combine DNA from different sources, often to produce proteins like insulin.
Correct Answer: B — To produce proteins, such as insulin
Q. What is recombinant DNA?
-
A.
DNA that is naturally occurring
-
B.
DNA that has been artificially created by combining DNA from different sources
-
C.
DNA that is only found in viruses
-
D.
DNA that is only found in bacteria
Solution
Recombinant DNA is formed by combining DNA from different organisms, allowing for the study and manipulation of genes.
Correct Answer: B — DNA that has been artificially created by combining DNA from different sources
Q. What is the appropriate concentration of hydrogen peroxide for high-level disinfection?
-
A.
3%
-
B.
6%
-
C.
30%
-
D.
50%
Solution
A concentration of 30% hydrogen peroxide is appropriate for high-level disinfection.
Correct Answer: C — 30%
Q. What is the average blood pressure in a healthy adult?
-
A.
120/80 mmHg
-
B.
140/90 mmHg
-
C.
100/60 mmHg
-
D.
130/85 mmHg
Solution
The average blood pressure in a healthy adult is typically around 120/80 mmHg.
Correct Answer: A — 120/80 mmHg
Q. What is the average daily production of saliva in a human?
-
A.
0.5 liters
-
B.
1 liter
-
C.
1.5 liters
-
D.
2 liters
Solution
The average daily production of saliva in a human is about 1 liter.
Correct Answer: B — 1 liter
Q. What is the average duration of human gestation?
-
A.
28 weeks
-
B.
36 weeks
-
C.
40 weeks
-
D.
44 weeks
Solution
The average duration of human gestation is approximately 40 weeks.
Correct Answer: C — 40 weeks
Q. What is the average growth rate of a typical tree in cm per year?
-
A.
10 cm
-
B.
20 cm
-
C.
30 cm
-
D.
40 cm
Solution
On average, many tree species grow about 20 cm per year under optimal conditions.
Correct Answer: B — 20 cm
Q. What is the average heart rate of a healthy adult at rest?
-
A.
60-100 beats per minute
-
B.
40-60 beats per minute
-
C.
100-120 beats per minute
-
D.
120-140 beats per minute
Solution
The average heart rate of a healthy adult at rest is typically between 60 and 100 beats per minute.
Correct Answer: A — 60-100 beats per minute
Q. What is the average height of a fully grown bamboo plant?
-
A.
5 m
-
B.
10 m
-
C.
15 m
-
D.
20 m
Solution
The average height of a fully grown bamboo plant can reach up to 15 m.
Correct Answer: C — 15 m
Q. What is the average length of a human newborn at birth?
-
A.
40 cm
-
B.
50 cm
-
C.
60 cm
-
D.
70 cm
Solution
The average length of a human newborn at birth is approximately 50 cm.
Correct Answer: B — 50 cm
Q. What is the average length of the human small intestine?
-
A.
3 meters
-
B.
5 meters
-
C.
7 meters
-
D.
9 meters
Solution
The average length of the human small intestine is approximately 5 meters.
Correct Answer: B — 5 meters
Q. What is the average lifespan of a red blood cell in humans?
-
A.
30 days
-
B.
60 days
-
C.
90 days
-
D.
120 days
Solution
The average lifespan of a red blood cell in humans is about 120 days.
Correct Answer: D — 120 days
Q. What is the average lifespan of a red blood cell?
-
A.
120 days
-
B.
30 days
-
C.
60 days
-
D.
90 days
Solution
The average lifespan of a red blood cell is about 120 days before it is recycled by the body.
Correct Answer: A — 120 days
Q. What is the average lifespan of a typical herbaceous plant?
-
A.
1 year
-
B.
2 years
-
C.
5 years
-
D.
10 years
Solution
The average lifespan of a typical herbaceous plant is about 1 year.
Correct Answer: A — 1 year
Q. What is the average minute ventilation for a resting adult?
-
A.
5-10 L
-
B.
10-15 L
-
C.
15-20 L
-
D.
20-25 L
Solution
The average minute ventilation for a resting adult is about 5-10 liters.
Correct Answer: A — 5-10 L
Q. What is the average number of bowel movements per week for a healthy adult?
-
A.
3-4
-
B.
5-7
-
C.
8-10
-
D.
11-13
Solution
A healthy adult typically has 5 to 7 bowel movements per week.
Correct Answer: B — 5-7
Q. What is the average number of chloroplasts found in a typical mesophyll cell?
-
A.
1-10
-
B.
10-50
-
C.
50-100
-
D.
100-200
Solution
A typical mesophyll cell contains about 10 to 50 chloroplasts.
Correct Answer: B — 10-50
Q. What is the average number of ovules per ovary in a typical angiosperm?
Solution
On average, a typical angiosperm ovary contains about 10 ovules.
Correct Answer: C — 10
Q. What is the average number of seeds produced by a single sunflower head?
-
A.
100
-
B.
500
-
C.
1000
-
D.
2000
Solution
A single sunflower head can produce around 1000 seeds on average.
Correct Answer: C — 1000
Q. What is the average number of stomata per square millimeter on a leaf?
-
A.
10-100
-
B.
100-500
-
C.
500-1000
-
D.
1000-5000
Solution
The average number of stomata per square millimeter on a leaf is typically between 100 and 500.
Correct Answer: B — 100-500
Q. What is the average number of teeth in an adult human mouth?
Solution
An adult human typically has 32 teeth, including wisdom teeth.
Correct Answer: C — 32
Q. What is the average respiratory rate for a resting adult?
-
A.
8-12 breaths/min
-
B.
12-20 breaths/min
-
C.
20-30 breaths/min
-
D.
30-40 breaths/min
Solution
The average respiratory rate for a resting adult is about 12-20 breaths per minute.
Correct Answer: B — 12-20 breaths/min
Q. What is the average resting heart rate for adults?
-
A.
40-60 beats per minute
-
B.
60-100 beats per minute
-
C.
100-120 beats per minute
-
D.
120-140 beats per minute
Solution
The average resting heart rate for adults is typically between 60-100 beats per minute.
Correct Answer: B — 60-100 beats per minute
Q. What is the average size range of a typical plant cell?
-
A.
1-10 micrometers
-
B.
10-100 micrometers
-
C.
100-1000 micrometers
-
D.
1-10 millimeters
Solution
Most plant cells range from 10 to 100 micrometers in size.
Correct Answer: B — 10-100 micrometers
Q. What is the average tidal volume in a healthy adult human?
-
A.
250 mL
-
B.
500 mL
-
C.
750 mL
-
D.
1000 mL
Solution
The average tidal volume in a healthy adult human is approximately 500 mL.
Correct Answer: B — 500 mL
Q. What is the average time it takes for food to travel through the entire digestive system?
-
A.
24-36 hours
-
B.
36-48 hours
-
C.
48-72 hours
-
D.
72-96 hours
Solution
It typically takes about 24 to 36 hours for food to travel through the entire digestive system.
Correct Answer: A — 24-36 hours
Q. What is the basic structural unit of DNA?
-
A.
Nucleotide
-
B.
Amino acid
-
C.
Monosaccharide
-
D.
Fatty acid
Solution
DNA is composed of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base.
Correct Answer: A — Nucleotide
Q. What is the basic unit of DNA structure?
-
A.
Amino acid
-
B.
Nucleotide
-
C.
Fatty acid
-
D.
Monosaccharide
Solution
The basic unit of DNA structure is a nucleotide, which consists of a sugar, a phosphate group, and a nitrogenous base.
Correct Answer: B — Nucleotide
Showing 181 to 210 of 1474 (50 Pages)
