MCQ Bank
ICRP stands for_______________
- A) International Committee on Radiation Protection
- B) International Committee on Radiation Production
- C) International Committee on Radius Protection
- D) International Committee on Rodon Protection
Radiation arising from human activities typically accounts for about _________ of public exposure.
- A) 90%
- B) 70%
- C) 20%
- D) 50%
Fats and oils are esters of fatty acids with:
- A) Glycerol
- B) Monohydric Alcohol
- C) Phosphoric acid residue
- D) Triglycerides
The correct statement concerning essential fatty acids is:
- A) The most essential fatty acid is sphingosine
- B) There are no essential fatty acids for human beings
- C) Essential fatty acids are only found in animal fat
- D) Linoleic Acid and Alpha Linolenic Acid are two fatty acids that must be ingested
Fatty acids that occur in natural fats usually contain an even number of carbon atoms ranging from:
- A) 4 to 38 carbons (C4 to C38)
- B) 4 to 32 carbons (C4 to C32)
- C) 4 to 30 carbons (C4 to C30)
- D) 4 to 36 carbons (C4 to C36)
Glycolipids (glycosphingolipids) contain:
- A) Lipids containing sphingosine, and carbohydrate
- B) Lipids containing fatty acid
- C) Lipids containing fatty acid, sphingosine, and carbohydrate
- D) Lipids containing fatty acid and carbohydrate
When double bonds are present in the fatty acid chain, they are nearly always in the:
- A) cis configuration
- B) cis-trans configuration
- C) trans-cis configuration
- D) trans configuration
The essential fatty acid linoleic acid, 18:2 Δ9, 12 is:
- A) ω-2 fatty acid
- B) ω-3 fatty acid
- C) ω-6 fatty acid
- D) ω-5 fatty acid
The 16-carbon saturated palmitic acid is abbreviated:
- A) 16:3
- B) 16:2
- C) 16:0
- D) 16:1
Fatty acid chains that contain no double bonds are called:
- A) poly-unsaturated
- B) saturated
- C) unsaturated
- D) poly-unsaturated
Phospholipids frequently have nitrogen-containing bases and other substituents are:
- A) Glycerophospholipids the alcohol is glycerol.
- B) None of any option
- C) Both: Glycerophospholipids the alcohol is glycerol and in Sphingophospholipids the alcohol is sphingosine
- D) Sphingophospholipids the alcohol is sphingosine
___________________are major structural elements of biological membranes.
- A) Fats and oils
- B) Nonpolar lipids
- C) Adipose tissue Fat
- D) Phospholipids and sterols
Oleic acid is an 18 carbon ______________ fatty acid.
- A) saturated
- B) poly-unsaturated
- C) mono-unsaturated
- D) mono-saturated
Glycosphingolipids are the lipids containing:
- A) sphingosine and carbohydrate
- B) glycerol
- C) fatty acid, sphingosine, and carbohydrate
- D) fatty acid and sphingosine
What is the major source of insect-resistance genes used in plant biotechnology?
- A) The virus Tobacco mosaic virus
- B) The bacterium Bacillus thuringiensis
- C) The fungus Aspergillus niger
- D) The algae Chlamydomonas
What is the primary purpose of introducing DNA into animal cells in culture?
- A) To eliminate all genetic diseases in animals
- B) To study gene function and regulation or produce recombinant proteins
- C) To increase the physical size of the animal
- D) To create new pets
Which of the following is listed as a risk factor of GM foods?
- A) Improvement in soil fertility
- B) Creation of superbugs and superweeds
- C) Reduction in crop yield
- D) Increased nutritional value
What is one of the most important goals of plant biotechnology as mentioned in the slides?
- A) To increase food yields
- B) To make plants grow without water
- C) To reduce the nutritional value of crops
- D) To eliminate all plant diseases permanently
Drought resistance in plants is an example of protection against which type of stress?
- A) Viral stress
- B) Nutritional stress
- C) Biotic stress
- D) Abiotic stress
What happens to the cell membrane during electroporation?
- A) It forms a thick wall around the cell
- B) It is completely destroyed
- C) Transient, nanometer-sized pores are generated
- D) It becomes permanently permeable