Which of the following is a commercial blood cholesterol lowering agent?
Statin
Streptokinase
Lipases
Cyclosporin A
Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement.
The enzyme binds DNA at specific sites and cuts only one of the two strands.
The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.
The enzyme recognizes a specific palindromic nucleotide sequence in the DNA.
The enzyme cuts DNA molecule at identified position within the DNA.
Which of the following sexually transmitted diseases is not completely curable?
Genital warts
Genital herpes
Chlamydiasis
Gonorrhoea
How does steroid hormone influence the cellular activities?
Binding to DNA and forming a gene-hormone complex
Activating cyclic AMP located on the cell membrane
Using aquaporin channels as second messenger
Changing the permeability of the cell membrane
Which of these following methods is the most suitable for disposal of nuclear waste?
Bury the waste under Antarctic ice-cover
Dump the waste within rocks under deep ocean
Bury the waste within rocks deep below the Earth's surface
Shoot the waste into space
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?
Zygote develops into embryo
Central cell develops into endosperm
Ovules develop into embryo sac
Ovary develops into fruit
What is the fate of the male gametes discharged in the synergid?
All fuse with the egg
One fuses with the egg, other(s) fuse(s) with synergid nucleus.
One fuses with the egg and other fuses with central cell nuclei.
One fuses with egg other(s) degenerate (s) in the synergid.
Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?
Genetic code is redundant
Genetic code is nearly universal
Genetic code is specific
Genetic code is not ambiguous
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as
Parthenocarpy
Syngamy
Parthenogenesis
Autogamy
C.
Parthenogenesis
The phenomenon in which female gamete develops into embryo without getting fused with male gamete (fertilisation) is called parthenogenesis.
Which of the following ecological pyramids is generally inverted?
Pyramid of energy
Pyramid of biomass in a forest
Pyramid of biomass in a sea
Pyramid of numbers in grassland