Which of the following is a reducing sugar ?
Galactose
Gluconic acid
Sucrose
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
In the DNA molecule
the total amount of purine nucleotides and pyrimidine nucleotides is not always equal
there are two strands which run parallel in the direction
the proportion of adenine in relation to thymine varies with the organism
there are two strands which run antiparallel-one in direction and other in
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 RNA that picks up specific amino acids from the amino acid pool in the cytoplasm to ribosome during protein synthesis is called
mRNA
tRNA
rRNA
carrier RNA
Which of the following is the simplest amino acid ?
Alanine
Asparagine
Glycine
Tyrosine
Protein synthesis in an animal cell takes plae
only in cytoplasm
in the nucleolus as well as in cytoplasm
in cytoplasm as well as in mitochondria
only on ribosomes attached to the nuclear envelope
Which one of the following is the correct matching of three items and their grouping category ?
Malleus, incus, cochlea - Ear ossicles
Ilium, ischium, pubis - Coxal bones of pelvic girdle
Actin, myosin, rhodopsin - Muscle proteins
Cytosine, uracil, thiamine - Pyrimidines
Mineral associated with cytochrome is
Cu
Mg
Fe and Mg
Fe and Cu
One turn of the helix in a B-form DNA is approximately
0.34 nm
3.4 nm
2 nm
20 nm
