31. Urine is formed in the nephron and which of the following steps are involved?
[A] Glomerular Filtration
[B] Tubular Reabsorption
[C] Secretion
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Urine is formed in the nephron and Glomerular Filtration, Tubular Reabsorption, and Secretion steps are involved in it.
32. Gastroesophageal reflux disease is related to which of the following?
[A] circulatory system
[B] digestive system
[C] respiratory system
[D] excretory system
Show Answer
Correct Answer: B [digestive system]
Notes:
Gastroesophageal reflux disease is related to the digestive system. Gastroesophageal reflux disease (GERD) occurs when stomach acid repeatedly backs up into the tube connecting your mouth and stomach (esophagus).
33. The female Reproductive System creates egg cells that are essential for reproduction known as __
[A] Menstrual Cycle
[B] Pregnancy
[C] Fertilization
[D] Ova
Show Answer
Correct Answer: D [Ova]
Notes:
The female Reproductive System creates egg cells that are essential for reproduction known as Ova.
34. What is Cystic Fibrosis?
[A] Sex-linked recessive disorder
[B] Autosomal dominant disorder
[C] Autosomal recessive disorder
[D] Sex-linked dominant disorder
Show Answer
Correct Answer: C [Autosomal recessive disorder]
Notes:
Cystic Fibrosis is an Autosomal recessive disorder that causes severe damage to the lungs, digestive system, and other organs in the body
35. Which is one of the essential nutrients for the growth and development of plants?
[A] Potassium
[B] Phosphorus
[C] Nitrate
[D] Sodium
Show Answer
Correct Answer: B [Phosphorus]
Notes:
Phosphorus is one of the essential nutrients for the growth and development of plants.
36. Restriction enzymes were discovered by?
[A] Smith and Nathans
[B] Alexander Fleming
[C] Berg
[D] None of these
Show Answer
Correct Answer: A [Smith and Nathans]
Notes:
Restriction enzymes were discovered by Smith and Nathans. Proteins produced by bacteria that cleave DNA at specific sites along the molecule are called restriction enzymes.
37. What is an autonomously repeating circular extra-chromosomal DNA?
[A] Bacteria
[B] Nitrogenous base
[C] RNA
[D] Plasmid
Show Answer
Correct Answer: D [Plasmid]
Notes:
A plasmid is an autonomously repeating circular extra-chromosomal DNA. They naturally exist in bacterial cells, and they also occur in some eukaryotes.
38. An example of abiotic stress is __
[A] pest
[B] insect
[C] drought
[D] vectors
Show Answer
Correct Answer: C [drought]
Notes:
An example of abiotic stress is drought. The negative effect of non-living factors on living organisms in a specific environment is known as abiotic stress.
39. Which of the following are examples of hydrophilic molecules?
[A] sugar
[B] cellulose
[C] starch
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
A molecule whose interaction with water and other polar substances is more thermodynamically favorable than its interaction with oil or other hydrophobic solvents is called a hydrophilic molecule. Sugar, salt, starch, and cellulose are examples of hydrophilic molecules.
40. Chromosome designation of Turner sydrome is ____:
[A] 44A+XO
[B] 44A+XXX
[C] 44A+XXY
[D] 44A+XYY
Show Answer
Correct Answer: A [44A+XO]
Notes:
Turner syndrome is a rare chromosomal disorder characterized by partial or complete loss (monosomy) of one of the X chromosomes that affects females. Individuals with Turner syndrome have only 45 chromosomes, including just a single X chromosome. This monosomic has a chromosome complement of 44 autosomes and one X chromosome (44+XO). The abnormal condition probably originates from exceptional egg or sperm with no X chromosome.
