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Which one of the following statements about human sperm is correct?
1. Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation
2. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
3. Acrosome serves as a sensory structure leading the sperm towards the ovum
4. Acrosome serves no particular function.
The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
A student while studying the anatomy of leaves of four specimens (P - S), observed the following characters: P. Reticulate venation and no bundle sheath. Q. Parallel venati
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Q. Can solutions with the same concentration of diverse solutes have different osmotic pressures? The osmotic pressure of a solution does not depend on the nature of the solute
Louis Pasteur (1860-1862) French): Even after the experiments of Spallanzani, the conflict of a biogenesis and biogenesis continued well into the middle of 19 th century till
Tabulate macro & micro nutrients on the basis of -elements, source, synthesis site, symptoms
Explain the Root amputation, Hemisectioning and Bicuspidization Root amputation: removal of one or more roots of a multirooted tooth "upper teeth". Hemisectioning: surgic
what is ecology?sub divison of ecology?
Cages for keeping animals in the science room It is frequently desirable in elementary and general science to stay animals caged in the science room for short periods of observ
Excluding the effects of cardiac output and hormones, describe the other factors that may affect blood pressure and blood flow in a middle-aged man who is exercising in an aerobics
Q. Calculate ideal weight for a diabetic patient? We now know that diabetes is the outcome of many genetic and environmental factors. The former is not in our control but the l
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