Quiz: Important Biology Trivia Questions
Below is an important biology trivia questions that a biology student should not have a hard time answering. It has some of the hardest questions according to some students and therefore if you give it a try and get the top marks, you should consider yourself smart. Do give it a try and get to see just how well you will do!
- 1.
The inner wall of the gut, surrounding the lumen consists of
- A.
Circular smooth muscle
- B.
Epithlium
- C.
Connective tissue
- D.
Longitudinal smooth muscle
- E.
Mesentry
Correct Answer
B. Epithlium -
- 2.
Motility in the gut is controlled by
- A.
The mesentery
- B.
The submucosal plexus
- C.
The myenteric plexus
- D.
The Serosa
- E.
The Mucosa
Correct Answer
C. The myenteric plexus -
- 3.
Which of the following statements are true concerning the lower oesophageal sphincter1 it is composed of skeletal muscle2 it is normally in the contracted state3 it controls the exit of materal from the stomach4 it prevents reflux of stomach acid into the oesophagus5, it relaxes during swallowing
- A.
1 only
- B.
1,2 and 4 only
- C.
1, 3, and 5 only
- D.
2,4. and 5 only
- E.
All 5 of above
Correct Answer
D. 2,4. and 5 only -
- 4.
Rugae are
- A.
Glands in the wall of the gastrointestinal tract
- B.
Folds in the wall of the stomach
- C.
Bands of longitudinal muscle in the duodenum
- D.
Collections of villi in the small intestine
- E.
Contraction of the oesophagus
Correct Answer
B. Folds in the wall of the stomach -
- 5.
Contraction of the circular muscle layer in the gut wall causes
- A.
The gut to lengthen
- B.
The gut to become narrower
- C.
The gut to become shorter
- D.
The gut to become wider
- E.
No change in the dimensions of the gut
Correct Answer
B. The gut to become narrower -
- 6.
Which of the following are found in salvia
- A.
Water
- B.
Ions
- C.
Mucus
- D.
Enzymes
- E.
All of the above
Correct Answer
E. All of the above -
- 7.
Which of the following statements about the oesophagus is FALSE
- A.
Food is propelled by peristalsis
- B.
Absorption of nutrients takes place
- C.
There are no digestive enzymes secreted
- D.
It transport food to the stomach
- E.
It secretes mucus
Correct Answer
B. Absorption of nutrients takes place -
- 8.
Which one of the following is not a component of the hepatobiliary system
- A.
Liver
- B.
Pancreas
- C.
Gallbladder
- D.
Stomach
- E.
Bile duct
Correct Answer
D. Stomach -
- 9.
In which part of the intestine does most digestion and absoption of nutrients take place
- A.
Duodenum
- B.
Jejunum
- C.
Ileum
- D.
Colon
- E.
Caecum
Correct Answer
B. Jejunum -
- 10.
Amylase is the enzyme respponsible for
- A.
The breakdown of proteins to amino acids
- B.
The breakdown of strach to monosaccharides
- C.
The breakdown of lipids to fatty acids
- D.
The synthesis of large polysaccharides in the gut
- E.
The emulsification of fat droplets
Correct Answer
B. The breakdown of strach to monosaccharides -
- 11.
Which one of the following statements is FALSE
- A.
Fructose is absorbed by carrier - mediated diffusion
- B.
Glucose is absorbed by secondary active transport with sodium ions
- C.
Galactose is absorbed by simple diffusion
- D.
Amino acids are absorbed by secondary active transport with sodium ions
- E.
Lipids are absorbed with the aid of micelles
Correct Answer
C. Galactose is absorbed by simple diffusion -
- 12.
Chylomicrons are
- A.
Partially digested protein
- B.
The products of carbohydrate digestion
- C.
Small electrically charged sugar molecules
- D.
Formed by the combination of triglycerides and cholesterol
- E.
Microscopic particles of faeces
Correct Answer
D. Formed by the combination of triglycerides and cholesterol -
- 13.
Arteries carry blood ---------------------- from heart nd towards --------------------------
- A.
Away, Tissue
- B.
Towards, tissue
- C.
Away, veins
- D.
Towards, vein
Correct Answer
A. Away, Tissue -
- 14.
What is exchanged between blood and tissue
- A.
Oxygen
- B.
Carbon-dioxide
- C.
Nutreints
- D.
Waste
- E.
All of above
Correct Answer
E. All of above -
- 15.
What differnet types of tissue are found in artery walls
- A.
Epithielam
- B.
Smooth muscle
- C.
Connective
- D.
All above
Correct Answer
D. All above -
- 16.
Which blood vessel : is site of gas exchange and waste exchange
- A.
Capillary
- B.
Artery
- C.
Vein
- D.
Ateriole
- E.
Venule
Correct Answer
A. Capillary -
- 17.
Which blood vessel: reservoir for approx 60% of total blood
- A.
Capillery
- B.
Artery
- C.
Vein
- D.
Arteriole
- E.
Venule
Correct Answer
C. Vein -
- 18.
Which blood vessel: plays important role in regulating blood pressure and in distributing blood
- A.
Cainpillary
- B.
Artery
- C.
Vein
- D.
Arterole
- E.
Venule
Correct Answer
D. Arterole -
- 19.
What does this descibe :these have thinner walls, it relates to the blood pressure is less, they have valves to prevent backflow
- A.
Capillary
- B.
Artery
- C.
Vein
- D.
Arterole
- E.
Venule
Correct Answer
C. Vein -
- 20.
The hollow centre of blood vessels through which blood flows is called the
- A.
Lamina
- B.
Lumen
- C.
Tunica Interna
- D.
Pre-capillary spincter
- E.
Tunica adventitia
Correct Answer
B. Lumen -
- 21.
Blood vessels that are composed of only a single layer of cells and a basement membrane and that allow exchange of nutrients between the blood and tissues cells are called
- A.
Arteries
- B.
Capillaries
- C.
Veins
- D.
Venules
- E.
Arterioles
Correct Answer
B. Capillaries -
- 22.
Relaxation or decrease in the amount of smooth muscle contraction results in --------------- & ---------------- in the size of arteriole
- A.
Vasocontriction , increase
- B.
Vasoconstriction, decrease
- C.
Vasodilation , increase
- D.
Casodilation , decrease
- E.
None of these
Correct Answer
C. Vasodilation , increase -
- 23.
If blood vessels has a wall consisting of a layer of endothelium & a basement membrane and the diameter of the vessel is approximately the same as that of a red blood cell then the vessel is probadly a
- A.
Arteriole
- B.
Artery
- C.
Venule
- D.
Capillary
- E.
Vein
Correct Answer
D. Capillary -
- 24.
Which of the following is NOT true of resistance
- A.
The smaller the blood flow the greater the resistance
- B.
The thicker the blood the higher the resistance
- C.
The longer the vessel the greater the resistance
- D.
The smaller the diameter the greater the resistance
- E.
It is likely to increase by dehydration
Correct Answer
A. The smaller the blood flow the greater the resistance -
- 25.
The pulmonary circulation carries deoxgenated blood from the --------------------- to the lung and returns oxygenated blood from the lungs to the -------------
- A.
Left ventricle, right atrium
- B.
Right ventricle, left atrium
- C.
Left atrium, right ventricle
- D.
Right atrium, left ventricle
- E.
Right ventricle, left ventricle
Correct Answer
B. Right ventricle, left atrium -
- 26.
Veins are thinner walls than arteries because they
- A.
They carry less blood than arteries
- B.
Unlike arteries they have no muscle in their walls
- C.
Are vessels where gas and nutreints exchange takes place
- D.
Carry blood at lower pressure
- E.
They are more numerous than arteries
Correct Answer
D. Carry blood at lower pressure -
- 27.
What method is used to calculate energy expenditure by measuring oxygen consumption
- A.
Bomb calorimetry
- B.
Basal calorimetry
- C.
Direct calorimetry
- D.
Indirect calorimetry
- E.
Excersice calorimetry
Correct Answer
D. Indirect calorimetry -
- 28.
What percentage of the day's total energy expenditure of the average person is represented by the basal metobolism
- A.
10-15%
- B.
30 -40%
- C.
65 - 70%
- D.
Over 90%
- E.
Less than 5%
Correct Answer
C. 65 - 70% -
- 29.
What is the major factor that determine basal metabolic rate
- A.
Age
- B.
Gender
- C.
Body composition
- D.
Body weight
- E.
Activity levels
Correct Answer
C. Body composition -
- 30.
Which of the following is a feature of basal metabolic rate (bmr)
- A.
Fever decrease bmr
- B.
Fasting increase bmr
- C.
Hyperthyroidism increase bmr
- D.
Females have higher bmr than males on a body weight basis
- E.
Pregnancy decrease bmr
Correct Answer
C. Hyperthyroidism increase bmr -
- 31.
What is athe range of body fat content of normal weight young women
- A.
9- 17%
- B.
25-30%
- C.
33 - 37%
- D.
38 - 44%
- E.
50 - 60%
Correct Answer
B. 25-30% -
- 32.
What is the range of body fat of normal weight young men
- A.
5 -9%
- B.
12 -15%
- C.
15 - 22%
- D.
23 - 28%
- E.
35 - 40%
Correct Answer
B. 12 -15% -
- 33.
The recommended energy intake for an average 25yr old woman is
- A.
15000kcals
- B.
3200 kcals
- C.
2000 kcals
- D.
2700 kcals
- E.
1000 kcals
Correct Answer
C. 2000 kcals -
- 34.
The thermic effect of food normally accounts for how much of TEE
- A.
5- 10%
- B.
15-30%
- C.
35 -40%
- D.
MORE THAN 50%
- E.
LESS THAN 5%
Correct Answer
A. 5- 10% -
- 35.
Dietary guidelines recommend that carbohydrates contribute what percentage of the total energy intake
- A.
25-30%
- B.
55 -60%
- C.
65 -75%
- D.
85 - 90%
- E.
Less than 25%
Correct Answer
B. 55 -60% -
- 36.
What of the following is not found in plants
- A.
Starch
- B.
Glycogen
- C.
Protein
- D.
Dietary
- E.
Lipids
Correct Answer
B. Glycogen -
- 37.
Which of the following is a component of all 3 disaccharides
- A.
Sucrose
- B.
Glucose
- C.
Fructose
- D.
Galatose
- E.
Maltose
Correct Answer
B. Glucose -
- 38.
What is another name for lactose
- A.
Milk sugar
- B.
Table sugar
- C.
Fruit sugar
- D.
Artifical sugar
- E.
None of the above
Correct Answer
A. Milk sugar -
- 39.
What is the primary storage form of carbohydrates in the body
- A.
Fibrech
- B.
Starch
- C.
Glucose
- D.
Glycogen
- E.
Glucagon
Correct Answer
D. Glycogen -
- 40.
Glycogen is stored mainly in which of the following tissue
- A.
Pancreas and kidney
- B.
Stomach and intestine
- C.
Muscle and liver
- D.
Brain and red blood cells
- E.
Adipose tissue
Correct Answer
C. Muscle and liverExplanation
400g stored in muscle , 100g in liverRate this question:
-
- 41.
When blood glucose levels fall, hat is the primary source of glucose to replenish the level
- A.
Blood lipids
- B.
Liver glycogen
- C.
Muscle glycogen
- D.
Blood fructose
- E.
Adipose tissue
Correct Answer
B. Liver glycogen -
- 42.
Which of the following in not a function of fat
- A.
Carrier of fat - soluble vitamins
- B.
Adds favour to food
- C.
Best source of energy for the brain
- D.
Essential constituent of body tissue
- E.
Provides a long term energy store
Correct Answer
C. Best source of energy for the brainExplanation
glucose is energy for brainRate this question:
-
- 43.
Current recommendation for the percentage contribution of fat in the diet are
- A.
40-45%
- B.
Less than 20%
- C.
30 - 35%
- D.
55 -60%
- E.
25 - 30%
Correct Answer
C. 30 - 35% -
- 44.
What compound is composed of 3 fatty acids attached to a molecule of glycerol
- A.
Steroid
- B.
Triglyceride
- C.
Phospholipid
- D.
Monoglyceride
- E.
Glycogen
Correct Answer
B. Triglyceride -
- 45.
A primary function of fat in the body is to
- A.
Build muscle tissue
- B.
Protect vital organs
- C.
Regulate body processes
- D.
Provide the nervous system with energy
- E.
Provide a rapid supply of energy during intense excersice
Correct Answer
B. Protect vital organs -
- 46.
How many differnet kinds of amino acids make up proteins
- A.
8
- B.
10
- C.
14
- D.
26
- E.
20
Correct Answer
E. 20 -
- 47.
What is the process by which heat or acidity disrupts the normal shape of a protein chain
- A.
Digestion
- B.
Condensation
- C.
Denaturation
- D.
Hydrogenation
- E.
Mutation
Correct Answer
C. Denaturation -
- 48.
Which of the following proteins inactivate foreign bacteria and viruses
- A.
Enzymes
- B.
Hormones
- C.
Antibodies
- D.
Callagen
- E.
Naemoglobin
Correct Answer
C. Antibodies -
- 49.
Most enzymes are
- A.
Fibrous protein
- B.
Globular proteins
- C.
Polysacchardes
- D.
Lipoproteins
- E.
Co-enzymes
Correct Answer
B. Globular proteins -
- 50.
Which of the following characteristics of enzymes is not true
- A.
They are all catalysts
- B.
They have a protein structure
- C.
They are destroyed by excess heat
- D.
They are destoyed by cold temperature
- E.
They are specific to one substrate
Correct Answer
D. They are destoyed by cold temperature -
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Current Version
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Mar 19, 2022Quiz Edited by
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Feb 21, 2010Quiz Created by
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