Zoology Practice Test || Zoology Exam Questions /(51-60) || Zoology MCQs

Biology & Genetics Quiz

51. Which of the following best describes "potency" in embryonic cells?

A) The ability of cells to perform specific functions B) The range of cell types a stem cell can differentiate into C) The potential for cells to undergo apoptosis D) The process of cell division and growth

52. Major Histocompatibility Complex (MHC) molecules are crucial for the:

A) Recognition of self vs. non-self by immune cells. B) Production of antibodies. C) Activation of complement proteins. D) Direct killing of pathogens.

53. An example of a primary immunodeficiency disorder is:

A) Allergic rhinitis B) Systemic lupus erythematosus C) Severe combined immunodeficiency (SCID) D) Rheumatoid arthritis

54. Codominance is best exemplified in:

A) Flower color in snapdragons B) Blood type AB in humans C) Height in pea plants D) All of the above

55. Complementary gene action occurs when:

A) Two genes interact to produce a single trait B) One gene masks the effect of another C) Both genes contribute equally to the phenotype D) None of the above

56. The Rh blood group system is an example of:

A) Multiple alleles B) Incomplete dominance C) Codominance D) Both A and C

57. Which of the following correctly describes the process of signal transduction for steroid hormones?

A) They bind to cell surface receptors and activate second messengers. B) They diffuse through the plasma membrane and bind to intracellular receptors. C) They are stored in vesicles until needed for release. D) They are modified by the liver before entering the bloodstream

58. Crossing over occurs during which stage of meiosis?

A) Prophase I B) Metaphase II C) Anaphase I D) Telophase II

59. Kappa particles in Paramecium are associated with:

A) Mitochondrial inheritance B) Cytoplasmic inheritance C) Nuclear inheritance D) None of the above

60. Homology modeling in bioinformatics refers to:

A) Constructing phylogenetic trees B) Aligning DNA sequences to identify similarities C) Predicting RNA secondary structures D) Predicting protein structures based on known structures of related proteins

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