MCQ Bank
What is the process of genetic transmission from parents to their offspring?
- A) Development
- B) Heredity
- C) Cleavage
- D) Fermentation
Melanocyte inducing transcription factor (MITF) is required for the production of _______________.
- A) Non-pigmented cells
- B) Nucleated cells
- C) Pigment cells
- D) Germ cells
In egg, vitelline envelope contains at least ________ different glycoproteins and is often involved in sperm-egg recognition.
- A) 5
- B) 7
- C) 6
- D) 8
One chemotactic molecule, a 14-amino acid peptide called _______, has been isolated from the egg jelly of the sea urchin.
- A) Insulin
- B) Melittin
- C) Bradykinen
- D) Resect
Regulation of gene expression can be accomplished by __________
- A) DNA
- B) RNA
- C) Translation products
- D) Selective messenger RNA translation
The volume of a sea urchin egg is about .......
- A) 300 picoliters
- B) 200 picoliters
- C) 100 picoliters
- D) 400 picoliters
Sperm consists of _______.
- A) A haploid nucleus
- B) All of these
- C) A propulsion system
- D) A sac of enzymes
The controlling agent of the efficiency and rate of transcription is _______
- A) Activator
- B) Enhancer
- C) Promoter
- D) Inhibitor
In 1978, Miller demonstrated that the eggs of the ______ not only secrete a chemotactic factor but also regulate the timing of its release.
- A) Mollusca
- B) Frogs
- C) Porifera
- D) Cnidaria
Transcription factors have -------- major domains.
- A) 4
- B) 2
- C) 3
- D) 5
The first evidence suggesting the importance of sperm in reproduction came from a series of experiments performed by Lazzaro Spallanzani in the late _____s.
- A) 1700
- B) 1800
- C) 1900
- D) 1600
The innermost layer of cumulus cells, immediately adjacent to the zona pellucida, is called the _________?
- A) Vitelline envelope
- B) Cumulus
- C) Zona pellucida
- D) Corona radiata
____________ is the process whereby two sex cells (gametes) fuse together to create a new individual with genetic potentials derived from both parents.
- A) Fertilization
- B) Crossing Over
- C) Genetic Recombination
- D) Cloning
A region that is not translated into protein is called ________
- A) Detranslated region
- B) Coding region
- C) Untranslated region
- D) Non-translated region
Red blood cells make .... while lens cells make crystallin proteins.
- A) Antigens
- B) Globins
- C) Blood
- D) Serum
The cortical granules are membrane-bound structures containing _______ enzymes.
- A) Catalases
- B) Hydrolytic
- C) Oxidative
- D) Proteolytic
Which transcription factor is required for mammalian eye, nervous system, and pancreas development?
- A) Pdx6
- B) MITF
- C) Pax6
- D) Pdx1
Nucleosome is composed of an ------------ of histone protein.
- A) Dimer
- B) Octamer
- C) hexamer
- D) heptamer
During gastrulation in snails, the micromeres will cover the entire embryo, leaving a small slit at the ..........
- A) egg white
- B) Animal pole
- C) Vegetal pole
- D) Dorsal pole
About ---------- hours after fertilization, the vegetal (endoderm) cells assume a wedge shape, expanding their apical margins and contracting near their vegetal margins.
- A) 4 to 7
- B) 4 to 5
- C) 4 to 8
- D) 4 to 6