Cell Biology

What is the shape of a bacterial plasmid?

• Linear

• Circular

• Irregular

• Bacillus

What are plasmid made of?

• Proteins

• Polysaccharides

• Nucleic acids

• Lipids

From which structure is a mesosome derived from?

• Plasma Membrane

• Plasmid

• Ribosome

• Cell wall

Which of these is not a surface structure in bacteria?

• Flagella

• Pilli

• Mesosome

• Fimbrae

What are the subunits of prokaryotic ribosomes?

• 50S, 30S

• 60S, 40S

• 70S, 30S

• 60S, 30S

Which of these are not eukaryotic?

• Plants

• Fungi

• Protists

• Monera

Which of these are absent in plant cell?

• Large Central Vacoule

• Cell wall

• Centriole

• Plastid

Which of these structures of the phospholipid bilayer is correctly matched with its property?

• Phosphate head – hydrophobic

• Phosphate head – hydrophilic

• Lipid tail – hydrophilic

• Lipid tail – Polar

Which of these statements is not true regarding the cell membrane?

• The phosphate heads are polar

• It is a phospholipid bilayer

• The hydrophilic tails face outwards

• It contains integral proteins

Which of these scientists proposed the fluid mosaic model of the cell membrane?

• Schleiden and Schwann

• Hershey and Chase

• Singer and Nicholson

• Watson and Crick