Molecular processes of capacitation prepare the sperm for the acrosome reaction and enable the sperm to become hyperactive, which one is not the event of molecular processes___ 

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#Question id: 14855

#Unit 13. Methods in Biology

For a Binomial distribution, the mean is 6 and the standard deviation is 2 . The Binomial distribution is 

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#Question id: 15820

#Unit 8. Inheritance Biology

Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.          

Assume that the trait is autosomal recessive with complete penetrance. What is the probability that Ben and Jane’s first child will be affected with the trait? If not affected, what is the probability that the child is a carrier?

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#Question id: 13230

#Unit 6. System Physiology – Plant

In very dry soils, the water potential (Yw) may fall below what is called the permanent wilting point, the water potential of the soil is so low that plants cannot regain turgor pressure even if all water loss through transpiration ceases. This means that

a) The hydraulic conductivity decreases drastically 

b) The water potential of the soil (Yw) is less than or equal to the osmotic potential (Ys ) of the plant

c) The water potential of the soil (Yw) is more than the osmotic potential (Ys) of the plant

d) cell osmotic potential (Ys) varies with plant species, the permanent wilting point is clearly not a unique property of the soil, it depends on the plant species

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#Question id: 4810

#Unit 8. Inheritance Biology

In a haploid organism, the C and D loci are 8 m.u. apart. From a cross C d X c D, which of the following proportion following progeny classes: (a) C D; (b) c d; (c) C d

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#Question id: 1987

#Unit 4. Cell Communication and Cell Signaling

A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to