The human genome contains about $3\mathrm{.}2$ billion base pairs, with only about

A$.20000$ protein coding genes

B$.2000$ protein coding genes

C$.200000$ protein coding genes

D$.200$ protein coding genes

E$.1000$ protein coding genes

The following is true about the mitochondria except

A$.$ It encodes about $20\%$ of total cellular proteins

B$.$ Can carry out all the steps of DNA replication, transcription and translation

C$.$ Initiate protein synthesis from the N $-$formylmethionine

D$.$ Has its own DNA

E$.$ It is believed to have a been prokaryote engulfed by a Eukaryotic organism

The following are some of the functions of the Mitochondria except

A$.$ Regulation of programmed cell death

B$.$ Provision of enzymes for oxidative phosphorylation

C$.$ Involved in anabolic metabolism

D$.$ Regulation of gene expression

E$.$ Site for energy generation

The following is an example of an extrinsic signal that can trigger the mitochondria to initiate apoptosis.

A$.$ DNA damage

B$.$ Intracellular stress

C$.$ Cytotoxic T cells

D$.$ Toxins

E$.$ Trauma

The following is true about the extracellular cell $-$ cell signaling pathways except

A$.$ Paracrine $-$ between adjacent cells

B$.$ Autocrine $-$ same cell

C$.$ Synaptic signaling $-$ distant cells

D$.$ Endocrine $-$ through blood stream to distant cells

E$.$ Synaptic $-$ at cell junctions to target cells

Following is true about growth factors except

A$.$ Promote entry of cells into the cell cycle

B$.$ Prevent apoptosis

C$.$ Can promote cell migration

D$.$ Inhibit biosynthesis of cellular components

E$.$ Relieve blocks on the cell cycle progression

The following are functions of vascular endothelial growth factors $($VEGF$)$

A$.$ Mitogenic for keratinocytes

B$.$ Stimulates proliferation of endothelial cell

C$.$ Stimulate proliferation of hepatocytes

D$.$ Stimulate formation of granulation tissue

Scanned by CamScanner

E$.$ Mitogenic for fibroblasts

$8.$ The following is true about the interstitial matric except

A$.$ It's a constituent of the extracellular matrix

B$.$ Synthesized by mesenchymal cells

C$.$ Consists of fibrilar collagen, Type IV collagen, laminin

D$.$ Present in the spaces between cells in connective tissue

E$.$ Forms a three dimensional relative amorphous gel

$9.$ The following is true about the cell cycle

A$.$ During the G$1$ phase of the cell cycle DNA is duplicated

B$.$ During the G$2$ phase of the cell cycle DNA is replicated

C$.$ During interphase the cell prepares for cell division

D$.$ During the G$0$ phase the cell the daughter cells separates into two

E$.$ Cytokinesis initiates the $.....$ncose of cell divicion