31. Which of the following animals is used in the production of fabric?
[A] Alpaca
[B] Llama
[C] Yak
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Alpaca, Llama, and yak animals are used in the production of fabric. The yak is an animal that is largely found in the Himalayas in India and Tibet, Llamas are animals typically found in South America and Alpacas are small camel-like animals found largely in South America.
32. The greater omentum connects the stomach to which structures?
[A] Spleen, transverse colon
[B] Spleen, ascending colon
[C] Spleen, descending colon
[D] Spleen, small bowel
Show Answer
Correct Answer: A [Spleen, transverse colon]
Notes:
The greater omentum connects the stomach to Spleen and transverse colon.
33. Which of the following is totally impossible outcome of Mendel’s Experiment?
[A] 3 tall 1 short plant
[B] 24 tall and 8 short plants
[C] 8 tall and 0 short plants
[D] 4 tall plants and 1 medium height plant
Show Answer
Correct Answer: D [4 tall plants and 1 medium height plant]
Notes:
4 tall plants and 1 medium height plant is totally impossible outcome of Mendel’s Experiment. Gregor Mendel discovered the fundamental laws of inheritance through his work on pea plants. They concluded that genes come in pairs and are inherited as separate units, one from each parent.
34. A renewable, biodegradable fuel that is manufactured from vegetable oils and animal fats are called __
[A] Bioethanol
[B] Biomethane
[C] Biodiesel
[D] None of these
Show Answer
Correct Answer: C [Biodiesel ]
Notes:
A renewable, biodegradable fuel that is manufactured from vegetable oils and animal fats are called Biodiesel
35. Biotechnology has been defined by which of the following?
[A] The European Federation of Biotechnology (EFB)
[B] National Center for Biotechnology Information (NCBI)
[C] National Institutes of Health (NIH)
[D] National Centre for Cell Science (NCCS)
Show Answer
Correct Answer: A [The European Federation of Biotechnology (EFB)]
Notes:
Biotechnology has been defined by The European Federation of Biotechnology (EFB).
36. A molecule that contains nitrogen and has the chemical properties of a base is called __
[A] RNA
[B] Nitrogenous base
[C] Bacteria
[D] Plasmid
Show Answer
Correct Answer: B [Nitrogenous base]
Notes:
A molecule that contains nitrogen and has the chemical properties of a base is called a Nitrogenous base. Nucleic acids are composed of a combination of 5 nitrogenous bases:
1. Guanine and adenine are double-ringed purine molecules.
2. Cytosine, thymine, and uracil are single-ringed pyrimidine molecules.
37. What is Bt cotton?
[A] cloned plant
[B] transgenic plant
[C] hybrid plant
[D] mutated plant
Show Answer
Correct Answer: B [transgenic plant]
Notes:
Bt cotton is a transgenic plant. Plants in which one or more genes of another species have been introduced into the genome using genetic engineering procedures are called transgenic plants.
38. Which organism’s plasmid was first used to construct recombinant DNA?
[A] Cyanobacteria
[B] Bacillus subtilis
[C] Saccharomyces cerevisiae
[D] Salmonella typhimurium
Show Answer
Correct Answer: B [Bacillus subtilis]
Notes:
Bacillus subtilis organism’s plasmid was first used to construct recombinant DNA.
39. Membrane lipids of chillsensitive plants contain ____:
[A] Low proportion of saturated fatty acids
[B] Equal proportion of saturated and unsaturated fatty acids
[C] Low proportion of unsaturated fatty acids
[D] High proportion of unsaturated fatty acids
Show Answer
Correct Answer: D [High proportion of unsaturated fatty acids]
Notes:
The membranes of chill sensitive plants have about a 2 :1 ratio of unsaturated to saturated fatty acids. It has been seen that the proportion of unsaturated membrane fatty acids increases and the critical temperature decreases so that chill-sensitive plants are more acclimitized to low temperatures.
40. Saprophytes are the organisms which depend for food on
____:
[A] Inorganic chemical compounds
[B] Living plants
[C] Living animals
[D] Dead and decaying material
Show Answer
Correct Answer: D [Dead and decaying material]
Notes:
Saprophytes are the organisms which depend for food on dead and decaying material. They secrete digestive substances into the surrounding environment and break down the organic matter into simpler substances. The nutrients thus produced are absorbed directly through the cell membranes of the organisms.
