Geners are packaged into a bacterial chromosome by
histones
basic proteins
acidic proteins
actin
Which is an essential amino acid ?
Serine
Aspartic acid
Glycine
Phenylalanine
Antibodies in our body are complex
steroids
prostaglandins
glycoproteins
lipoproteins
The four elements making 99% of living system are
CHOS
CHOP
CHON
CNOP
Length of one turn of the helix in a B-form DNA is approximately
3.4 nm
2 nm
0.34 nm
20 nm
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
Which steroid is used for transformation ?
Cortisol
Cholesterol
Testosterone
Progesterone
The two polynucleotide chains in DNA are
parallel
discontinuous
antiparallel
semiconservative
Element necessary for the middle lamella
Ca
Zn
K
Cu
Two free ribonucleotide units are interlinked with
peptide bond
covalent bond
hydrogen bond
phosphodiester bond
