During photosynthesis
both CO2 and water get oxidized
both CO2 and water get reduced
water is reduced and CO2 is oxidized
CO2 gets reduced and water gets oxidized
The order of occurrence of the cytochromes in the F1 particle is
cyt-b, cyt-c, cyt-a-cyt a3
cyt-c, cyt-b, cyt-a-cyt a3
cyt-a, cyt-b, cyt-c-cyt a3
cyt-a3, cyt-a, cyt-c-cyt b
Tube-within-a-tube body plan is shown by
coelenterates
platyhelminthes
aschelminthes (nemathelminthes)
porifers
True coelom appeared first in the course of evolution in
Aschelminthes
Chordata
Echinodermata
Annelida
The cell organelles are found in
bacterial cells
cyanobacterial cells
prokaryotic cells
eukaryotic cells
Intracellular compartments are not found in the cells of
lower plants
prokaryotes
higher plants
eukaryotes
Which endocrine gland becomes inactive in old age
Adrenal
Thymus
Pineal
Pituitary
B.
Thymus
A critical immune organ called the thymus shrinks rapidly with age, putting older individuals at greater risk for life-threatening infections. A new study reveals that thymus atrophy may stem from a decline in its ability to protect against DNA damage from free radicals. The damage accelerates metabolic dysfunction in the organ, progressively reducing its production of pathogen-fighting T cells.