Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?
Glucose-6-phosphate
Fructose 1, 6-bisphosphate
Pyruvic acid
Acetyl Co-A
Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?
Bacteria - Lysozyme
Plant cells - Cellulase
Algae - Methylase
Fungi - Chitinase
Which of the following are likely to be present in deep sea water?
Archaebacteria
Eubacteria
Blue-green algae
Saprophytic fungi
A.
Archaebacteria
Archaebacteria flourish in hot springs and deep sea hypothermal vents. Eubacteria are true bacteria, characterised by the presence or rigid cell wall and if motile a flagellum. Most fungi are heterotrophic and absorb soluble organic matter from dead substrates and hence are called saprophyte. The cyanobacteria have chlorophyll-a similar to green plants and are photosynthetic autotrophs.
Which of the following are correctly matched with respect to their taxonomic classification?
Flying fish, cuttlefish, silverfish - Pisces
Centipede, millipede, spider, scorpion - Insecta
House fly, butterfly, tse-tse fly, silverfish - Insecta
Spiny anteater, sea urchin, sea cucumber - Echinodermata
Which group of animals belong to the same phylum?
Malarial parasite, Amoeba, mosquito
Earthworm, pinworm, tapeworm
Prawn, scorpion, Locusta
Sponge, sea anemone, starfish
One of the representative of Phylum - Arthropoda is
cuttlefish
silverfish
pufferfish
flying fish
The H-zone in the skeletal muscle fibre is due to
the absence of myofibrils in the central portion of A-band
the central gap between myosin filaments in the A-band
the central gap between actin filaments extending through myosin filaments in the A-band
extension of myosin filaments in the central portion of the A-band
What external changes are visible after the last moult of a cockroach nymph?
Mandibles become harder
Anal cerci develop
Both fore wings and hind wings develop
Labium develops