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WorksheetsRevision Midterm Cell Biology Sem 1, 2021-2022
Total questions: 20
Worksheet time: 20mins
The classical cell theory contains the following tenets EXCEPT
A. Cells form by free-cell formation.
B. All cells come from pre-existing cells.
C. Cells are the basic unit of living organisms.
D. Living organisms composed of one or more cells.
Which of the prokaryotic and eukaryotic cell characteristics is NOT CORRECTLY matched?
A. Eukaryotes have linear chromosomes; prokaryotes have circular chromosomes.
B. Prokaryotes have two different RNA polymerases; eukaryotes have three different RNA polymerases.
C. Prokaryotes have mRNAs that often polycistronic; eukaryotes have mRNAs that are monocistronic.
D. Eukaryotes have membrane-bound organelles; prokaryotes do not have membrane-bound organelles.
Which of the following statements is in the CORRECT order of bonds, listed form the strongest to weakest?
A. Covalent bond, ionic bond, hydrogen bond, van der waals interaction.
B. Ionic bond, hydrogen bond, van der waals interaction, covalent bond.
C. Hydrogen bond, van der waals interaction, covalent bond, ionic bond.
D. Van der waals interaction, covalent bond, ionic bond, hydrogen bond.
Type of chemical bonds form in the molecules influenced by
A. Electrostatic – electron attraction
B. Electromagnetic – magnetic attraction
C. Electropositivity – a degree to which the atom pulls proton and holds them together
D. Electronegativity – a degree to which the atom pulls electron and holds them together
Two or more polypeptide chains join in aggregates to form a
A. Tertiary protein structure
B. Primary protein structure
C. Secondary protein structure
D. Quaternary protein structure
Which of the following aspects is NOT significant for a high magnification of microscope?
A. High contrast
B. High resolution
C. High fluorescence
D. High numerical aperture
A suitable microscope used to view small, unstained specimens that makes living cells more visible.
A. Dark field microscope
B. Bright field microscope
C. Fluorescence microscope
D. Confocal Laser microscope
Which of the following microscopes is used to reveal very fine detail structure and realistic colour of a small specimen?
A. Dark field microscope
B. Bright field microscope
C. Fluorescence microscope
D. Confocal Laser microscope
Magnification can be adjusted electronically and a specimen is viewed in 3D image.
A. Dark field microscope
B. Bright field microscope
C. Fluorescence microscope
D. Confocal Laser microscope
Which of the following microscopes is practical to study the internal structure of cells?
A. Light microscope
B. Stereo microscope
C. Scanning electron microscope
D. Transmission electron microscope
Which of the following statements is CORRECTLY matched of the enzyme and location it is synthesized?
A. Catalase synthesized in lysosome.
B. Nucleases synthesized in nucleus.
C. Hydrolases enzyme synthesized in ER.
D. Oxidative enzyme synthesized in endosome.
Which of the following processes is NOT involves degradation of intracellular and extracellular components?
A. Autophagy
B. Exocytosis
C. Endocytosis
D. Receptor mediated endocytosis
Known as ‘Self-eating’ due to the natural and regulated mechanism of disposal obsolete parts and damaged cells in the organelle.
A. Autophagy
B. Exocytosis
C. Endocytosis
D. Receptor mediated endocytosis
Genetic disorder that occurs in young boy resulted in deterioration of myelin sheath of neurons.
A. Zellweger Syndrome (PXRI)
B. Mucopolysaccharidosis I (MPS-I)
C. Inclusion – Cell Disease (I-cell disease)
D. X-linked adrenoleukodystrophy (X-ALD)
Which of the following statements is TRUE on how the lysosomal proteins are recognised and sorted in Trans Golgi Network (TGN)
A. The proteins recognized and sorted by peroxisome.
B. The proteins recognized and sorted by endosome and lysosome.
C. The proteins carry a unique marker, ‘Mannose-6-phosphate’ which recognized by the transmembrane M6P receptor that present on the Trans-Golgi Network.
D. The proteins carry a unique marker, ‘Mannose-6-phosphate’ which recognized by the transmembrane M6P receptor that present on the Cis-Golgi Network.
Which of the following coated vesicle involve in transportation of materials from TGN to endosomes, lysosomes and plant vacuoles?
A. COPI – coated vesicles
B. COPII – coated vesicles
C. COPIII – coated vesicles
D. Clathrin – coated vesicles
Movement of materials in retrograde or backward direction normally observed in
A. Cisternal transport model
B. Vesicular transport model
C. Cisternal maturation model
D. Vesicular maturation model
Which of the followings is NOT the main structures of cytoskeleton?
A. Microtubules
B. Motor proteins
C. Microfilaments
D. Intermediate filaments
Transit peptides transported into chloroplasts are recognized by _______ in the outer membrane and _______ in the inner membrane.
A. Hsp 70; Hsp 60
B. Hsp 60; Hsp 70
C. TOC complex; TIC complex
D. TIC complex; TOC complex
1. In nuclear export, interaction with ________ causes a conformational change, either the importin dissociates from cargo (molecule imported from cytoplasm to nucleus) or exportin binds to cargo (molecule exported from nucleus to cytoplasm).
A. RanBP
B. Ran – GAP
C. Ran – GDP
D. Ran – GTP
