Biology Times (^19)
March
(c) amphitropous (d) anatropous
- Meta- females have
(a) XXXX (b) XY
(c) XO (d) XX - The point mutations A to G, C to T, C to G and T
to A in DNA are
(a) Transversion, transversion, transition and
transition respectively.
(b) Transition, transition ,transversion and
transversion respectively.
(c) Transition, transversion, transition and
transversion respectively
(d) All four are transition. - In man which of the following genotypes
and phenotypes may be the correct result of
aneuploidy in sex chromosomes
(a) 22 pairs + XXXY females
(b) 22 pairs + Y females
(c) 22 pairs +XX females
(d) 22 pairs + XXY males - Enzyme needed for transportation of lactose into
the cells is
(a) galactosidase (b) transacetylase
(c) permease (d) Lactase - The first undoubted evidence about DNA being
the genetic material came from
(a) The establishment of DNA as a cheif chemical
constituent of chromosomes
(b) The establishment of DNA as a self-replicating
substance
(c) Transformation of rough-coated region strain
of Diplococcus pneumoniae into smooth
coated strain
(d) Transduction of bacteria by action of
bacteriophage - In a mutational event, when adenine is replaced
by guanine, it is a case of
(a) Transversion
(b) Transition
(c) Frameshift mutation
(d) Transcription - Biolistics (gene-gun) is suitable for
(a) Disarming pathogen vectors
(b) Transformation of plant cells
(c) DNA finger printing
(d) Constructing recombinant DNA by joining
with vectors - Which is the action plan by The Ministry of
Environment and Forests to save major rivers of
our country from pollution.
(a) Ganga and Tapti action plan
(b) Kaveri and Saraswathi action plan
(c) Ganga and Yamuna action plan
(d) Sindhu and Narmada action plan- During cellulose fermentation by anaerobic
bacteria in rumen and reticulum, Cellulose is
mainly changed into
(a) Ethanol (b) Butanol
(c) CO 2 (d) Volatile fatty acid - In domestic sewage, impurities in the form of
suspended solids, colloidal particles and dissolved
solids are about
(a) 0.10% (b) 0.1% (c) 0.01% (d) 0.2% - Which of the following is not a prerequisite for
PCR?
(a) Mg2+ ions
(b) Denatured DNA of interest
(c) T 4 DNA ligase
(d) DNA polymerase - The first restriction endonuclease type II, P was
isolated from Q bacterium.
P Q
(a) Eco RI Escherichia RY13
(b) Eco RIII Escherichia coli
(c) Hind II Haemophillus influenza
(d) Bam HI Bacillus
amyloliquefaciens - Main objective of production of herbicide
resistant GM crops is to
(a) Reduce herbicide accumulation in food
articles for health safety
(b) Eliminate weeds from the field without the
use of herbicides
(c) Encourage eco friendly herbicides
(d) Eliminate weeds from the field without the
use of manual labour - Which of the statement regarding Genetic
Engineering Approval Committee (GEAE) is
correct?
(a) Genetic modification of organisms can have
unpredictable results when such organisms
are introduced into the ecosystem. Therefore
the Indian government has set up
organization such as GEAC
(b) It ensures the safety of introducing GM
organisms for public services
(c) It makes decision regarding the validity of GM
research
(d) All the above