#Question id: 10714
#Unit 10. Ecological Principles
What is value of Gini-simpson indices of following
community?
#Question id: 11503
#Unit 9. Diversity of Life Forms
Which process allowed the nucleomorphs of chlorarachniophytes to be first reduced, and then (in a few species) lost altogether, without the loss of any genetic information?
#Question id: 5675
#Unit 5. Developmental Biology
Following are the statements related to mammalian chaemotaxis:
A. During chaemotaxis, the oocyte and its accompanying cumulus cells secrete molecules that attract only uncapacitated sperm toward the egg during the last stages of sperm migration.
B. These chaemotactic compound are hormone progesterone, which is made by the cumulus cells.
C. Progesterone has been shown to bind to a receptor that activates Ca2+ channels in the cell membrane of the sperm tail, leading to sperm hyperactivity and provides directional cue.
D. Cumulus cells also secrete a substance, CRISP1, that attracts sperm and hyperactivates them through CatSper channels similar as in sea urchins.
Which of the following statement is incorrect?
#Question id: 28814
#Unit 2. Cellular Organization
Which of the following statements about these given graph is correct?
a)Length of the neck domain determines the processivity of motor protein
b)myosin step size and force with actin held by optical traps
c)It represents the steps of head domain determine the rate of movement by binding with actin filaments
d)rate at which these myosins moved on actin filaments was determined
#Question id: 28863
#Unit 2. Cellular Organization
Melanophores are cells of the vertebrate skin that contain hundreds of dark melanin-filled pigment granules called melanosomes. Melanophores either have their melanosomes dispersed or aggregated by__