Biology Basic Unit 1 Test

This is not a function of cell membrane in an animal cell

• Maintenance of concentration gradient

• Regulates flow of materials

• Transmission of nerve impulse

• Involved in cellular respiration

Which one of the following cell structure is involved in the synthesis of lipids?

• Endoplasmic reticulum

• Golgi complex

• Centriole

• Mitochondrion

Regarding cytoplasm of bacterial cell, This is not true:

• Its peripheral parts are gel like

• It lacks membranous organelles

• It contains single circular DNA

• does not show cyclosis

Nucleus is involved in all of the following except:

• Replication

• Transcription

• Translation

• Ribosome formation

Cell organelle responsible for turgor movement in plants is:

• Nucleus

• Cell wall

• Cytoplasm

• Vacuole

These are not present in prokaryotic chromosome:

• Thymine bases

• Histone proteins

• Double stranded DNA

• Pentose sugar

It is not an energy dependent process?

• Pinocytosis

• Active transport

• Facilitated diffusion

• Exocytosis

Precursors of cellulose and pectin are present in

• Phragmoplast

• Cleavage furrow

• Centrosome

• Nucleoli

Most accepted model for the explanation of plasma membrane structure is

• Fluid mosaic model

• Sand witch model

• Unit membrane model

• All A, B, C

Cisternae stacks in Golgi apparatus are continuously formed by fusion of vesicles, which are probably derived by the budding of

• RER

• Lysosome

• SER

• Peroxisome