MCQ Bank
Which group of bacteria retains the crystal violet dye after the decolonization step in the Gram staining procedure?
- A) Acid-fast bacteria
- B) Gram-neutral bacteria
- C) Gram-positive bacteria
- D) Gram-negative bacteria
Which of the following organelles is responsible for breaking down cellular waste in animal cells?
- A) Mitochondria
- B) Nucleus
- C) Golgi apparatus
- D) Lysosomes
How does the compound microscope magnify the image of the specimen?
- A) By adjusting the height of the microscope
- B) Using of combination of mirrors and lenses
- C) By using a combination of objective and eyepiece lenses
- D) Through use multiple objective lenses
With reference to stages of eukaryotic cell cycle, which of the following pair is correct?
- A) G1 phase, preparation for mitosis
- B) S phase, DNA replication
- C) M phase, cell growth
- D) G2 phase, cell division
Which part of the roots contains actively dividing cells?
- A) Tip
- B) Middle
- C) Base
- D) Stalk
In squash preparation of onion roots preparation experiment, what is the purpose of submerging the base of the onion in water several hours?
- A) Soften the onion for cutting
- B) Encourage the growth of roots
- C) Remove excess smell from the onion
- D) Increase the size of onion's cell
Which of the following represents true statement regarding anaphase of mitosis?
- A) Homologous chromosomes split apart
- B) Chrmatids first time become visible
- C) Homologous chromosomes cross over
- D) Chromatids split apart
A genetically engineered cell is designed that is unable to do cyclosis. In your opinion which of the following cellular function will be mostly effected?
- A) Movement of molecules out of the circular nucleus
- B) Maintainance of circular shape of cell
- C) Movement molecules and organelles inside the cell
- D) Equal distribution of genetic material during cell division
During which phase of interphase does the cell duplicate its DNA in its nucleus?
- A) G2
- B) M
- C) G1
- D) S
Which type of plastid is the largest among the three subtypes of leucoplasts?
- A) Amyloplasts
- B) Elaioplasts
- C) Gerontoplasts
- D) Proteinoplasts
When does cytokinesis begin in the cell cycle?
- A) During G2 phase
- B) Before S phase
- C) During prophase
- D) After mitosis is complete
Which plastid undergoes the aging process and starts converting into different organelles?
- A) Gerontoplasts
- B) Elaioplasts
- C) Proteinoplasts
- D) Amyloplasts
What is the the arrangement of cells in the staminal hair ?
- A) Multiseriate
- B) Uniseriate
- C) Pluriseriate
- D) Diseriate
Which of the following stage of cell division is different in plant and animal cells?
- A) Metaphase
- B) Cytokinesis
- C) Prophase
- D) Anaphase
With reference to the squah preparation of onion roots, what is the next step after covering the root tip with the appropriate stain?
- A) Cut off the root tip
- B) Wash with water and gently put cover slip onto the root tip
- C) Incubate for 4 minutes
- D) Observe under low power objective lens
What is the main function of leucoplasts?
- A) Protein synthesis
- B) Storage of lipids, starch, and proteins
- C) Photosynthesis
- D) Synthesis of pigments
Which of the following statement truely describes defination of cyclosis?
- A) The identification feature of staminal hair
- B) The distribution of material inside the cell
- C) The circular movement of cytoplasm inside the cell
- D) The movement of molecules outside the cell
In which part of a plant are proteinoplasts typically found?
- A) Flowers
- B) Roots
- C) Seeds
- D) Leaves
What is the purpose of the mitotic phase?
- A) The cell increases in size physically and copies organelles
- B) The cell makes more proteins and organelles
- C) The cell divides its copied DNA and cytoplasm to make two new cells
- D) The cell duplicates its DNA
In which phase of the cell cycle does the nuclear DNA condense into visible chromosomes?
- A) G1
- B) Cytokinesis
- C) S
- D) Mitosis