Smallest bone of human body is?

RNA interference helps in__________?

A. Cell proliferation
B. Micropropagation
C. Cell defence
D. Cell differentiation

An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called?

A. Biome
B. Phyletic lineage
C. Community
D. Population

Simple tissues and complex tissues are two groups of_________tissues.

A. Meristematic
B. Permanent
C. Epidermal
D. Supporting

Which organelles contain its own DNA?A. nucleus
B. mitochondria
C. chloroplast
D. All of these

The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Organelles are membrane-bound subunits within a cell — analogous to organs in the body — that perform specific functions. The nucleus is the control center of the cell, and houses genetic information. The mitochondria and chloroplasts both produce energy, in animal and plant cells, respectively.

 

All of the following veins carry deoxygenated blood exceptA. Superior vena cava
B. Inferior vena cava
C. Hepatic vein
D. Pulmonary vein

pulmonary vein carry oxygenated blood because it carry blood from lungs to left atrium.. inferior vena cava and superior vena cava carry deoxygenated.. and all veins carry deoxygenated blood except pulmonary vein.. superior vena cava carry the deoxygenated blood from uper part like head neck shoulder etc. while inferior vena cava carry the deoxygenated blood from lower part limbs etc of the body.

 

Chlorophylls are found embedded in the __________ membranes?

A. Stroma
B. Grana
C. Thylakoid
D. Intergrana