Cell Biology Mid - I, September - 2014

1.Prokaryotes contains which of the following
  • Mitochondria
  • Nucleolus
  • Mesosomes
  • Chloroplast
Answer: C
2.Ribosomes are composed of
  • RNA only
  • Proteins only
  • Lipids only
  • RNA & Proteins
Answer: D
3.What is the immediate source of energy for active transport
  • ATP
  • Proteins
  • Fats
  • Carbohydrates
Answer: A
4.Detoxification of harmful drugs, chemicals and lipid synthesis is done by
  • Ribosomes
  • Endoplasmic Reticulum
  • Lysosomes
  • Mitochondria
Answer: B
5.In which phase duplication of DNA takes place
  • G1 Phase
  • S Phase
  • G2 Phase
  • Mitosis
Answer: B
6.The nucleolus present in the nucleus play an important role in the synthesis of
  • Lysosomes
  • Ribosomes
  • Peroxisomes
  • Endoplasmic Reticulum
Answer: B
7.Microtubules are composed of
  • Actin
  • Myosin
  • Keratin
  • Tubulin
Answer: D
8.Chiasmata are formed in this stage of Meiosis
  • Leptotene
  • Diplotene
  • Pachytene
  • Zygotene
Answer: C
9.The outer covering in some bacteria that protects from phagocytosis by host cell is
  • Cell wall
  • Cell membrane
  • Flagellum
  • Capsule
Answer: D
10.The eukaryotic cell cycle is guarded at the following check points
  • G1/S boundary
  • G2/S boundary
  • Metaphase/Anaphase boundary
  • All the above
Answer: D
11.Diffusion is considered as ------------------------ type of transport.
Answer: Passive
12.The -------------------- enzyme in the peroxisomes decomposes hydrogen peroxide.
Answer: Catalase
13.---------------------- is the process of vesicles fusing with the plasma membrane and releasing their content to outside of the cell.
Answer: Exocytosis
14.Phragmoplast is formed during cytokinesis of --------------- cells.
Answer: Plant
15.Secretory cells consists of more number of this cell organelle --------------------------.
Answer: Golgi complex
16.----------------------- is a transport in which two molecules are transported in the same direction.
Answer: Symport
17.The ---------------------------------- in the mitochondria is the site of oxidative phosphorylation in eukaryotes.
Answer: Electron transport chain
18.-------------------------- are the particles found in the thylakoid membrane of chloroplast.
Answer: Quantasomes
19.A nucleosome is a segment or fragment of ------------------------ wrapped around a core of histone proteins.
Answer: DNA
20.The chromosomal ends are known as ---------------------------------------.
Answer: Telomeres