Geners are packaged into a bacterial chromosome by
histones
basic proteins
acidic proteins
actin
About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and
phosphorus and sulphur
sulphur and magnesium
magnesium and sodium
calcium and phosphorous
The two polynucleotide chains in DNA are
parallel
discontinuous
antiparallel
semiconservative
DNA synthesis can be specifically measured by estimating, the incorporation of radio labelled
uracil
adenine
thymidine
deoxyribose sugar
One of the similarities between DNA and RNA is that both
are polymers of nucleotides
are capable of replicating
have similar sugars
have similar pyrimidine bases
Which of the following is a reducing sugar ?
Galactose
Gluconic acid
Sucrose
Which is wrong about nucleic acids ?
DNA is single stranded in some viruses
RNA is double stranded occasionally
Length of one helix is 45 in B-DNA
One turn of Z-DNA has 12 bases
The pyrenoids are made up of
proteinaceous centre and starchy sheath
core of protein surrounded by fatty sheath
core of starch surrounded by sheath of protein
core of nucleic acid surrounded by protein sheath
Element necessary for the middle lamella
Ca
Zn
K
Cu
Which is an essential amino acid ?
Serine
Aspartic acid
Glycine
Phenylalanine
