MCQ Bank
Which is NOT a way natural selection affects populations?
- A) Creating adaptive features
- B) Altering allele frequencies
- C) Changing phenotype display
- D) Reducing genetic drift
Which of the following statements is true about prokaryotes?
- A) They lack membrane-bound organelles
- B) They have many organelles
- C) They have a well-defined nucleus
- D) They are multicellular organisms
Genetic variation is essential for which evolutionary process?
- A) Migration
- B) Natural selection
- C) Extinction
- D) Photosynthesis
In a phylogenetic tree, what does a node represent?
- A) An extinct species
- B) A common ancestor where lineage splits
- C) A fossil
- D) A branch ending
What does similarity in DNA sequences between two organisms suggest?
- A) Same lifespan
- B) Similar habitat
- C) Common ancestry
- D) Random mutations
Which of the following is NOT an example of genetic variation?
- A) Eye color
- B) Skin tanning from the sun
- C) Blood type
- D) Leaf modification in plants
Gene flow usually occurs due to:
- A) Mutation of alleles
- B) Reproduction within a clone
- C) Migration of individuals or gametes
- D) Isolation of species
Who proposed the concept of "survival of the fittest"?
- A) Lamarck
- B) Darwin
- C) Malthus
- D) Wallace
Which of the following structures is an example of convergent evolution?
- A) Roots of monocots and dicots
- B) Wings of bat and bird
- C) Beaks of Darwin’s finches
- D) Human arm and whale flipper
According to the video, how does molecular evidence relate to structural and fossil evidence?
- A) It ignores it
- B) It contradicts it
- C) It complements it
- D) It replaces it
Which dating technique is commonly used to determine the numerical age of rocks?
- A) Fossil Replication
- B) Carbon Copying
- C) Stratification
- D) Radiometric Dating
Resistance in bacteria is defined as:
- A) Ability to kill antibiotics
- B) Ability to grow at higher concentration of an antibiotic
- C) Slow reproduction in antibiotic presence
- D) Failure to respond to any treatment
What does the Hardy-Weinberg equation calculate in a population?
- A) Mutation rates
- B) Species diversity
- C) Evolutionary direction
- D) Genotype frequencies
Over time, natural selection leads to:
- A) Genetic uniformity globally
- B) Random loss of all traits
- C) Adaptive features for specific environments
- D) Increased gene flow
Why is pollen an important adaptation for land plants?
- A) It forms fruits
- B) It absorbs sunlight
- C) It allows fertilization without water
- D) It grows roots
Why are ferns used as indoor ornamental plants?
- A) They need high sunlight
- B) They thrive in low light
- C) They repel pests
- D) They produce flowers
If DNA library is established using expression vectors, each individual clone can be expressed to yield a
- A) Dipeptide
- B) Monopeptide
- C) Nucleotide
- D) Polypeptide
ABC pathway for protein export and Type II secretion pathway are used for
- A) Protein trafficking
- B) DNA trafficking
- C) RNA trafficking
- D) Chromosome trafficking
____________________ depends upon transcription of appropriate gene, efficient translation of mRNA and in many cases, post-translational processing and compartmentalization of nascent polypeptide.
- A) Synthesis of genome
- B) Synthesis of functional protein
- C) Synthesis of functional RNA
- D) Synthesis of functional DNA
________ are simply plasmids designed for the cloning of very long segments
- A) Human artificial chromosomes
- B) Bacterial artificial chromosomes
- C) Viral artificial chromosomes
- D) Yeast artificial chromosomes