Biology Answers

Outline the reproductive phenomena of the Boars

What are the physical forces responsible for the movement of an uncharged particle and a charged particle across a biological membrane.

The membrane potential of a neuron is measured from the inside of the cell relative to the outside. For a newly discovered neuron with properties that are not yet known, a researcher measures that the outside of this neuron is 60 mV more positive compared to the inside. What is the membrane potential?

Disease prevention (vaccination) in dairy heifers

Discuss nutritional management of dairy heifers

Effect of nutrition on future production/reproduction of dairy cattle

Discuss Heifers Pre-partum nutrition and it's effect on metabolic disorders

Health management of dairy cattle from birth to first calving

Management of dairy cattle from birth to weaning

At the moment of fertilization a female egg is about 100μm in diameter. Assuming that each lipid molecule in the plasma membrane has a surface area of 10-14 cm2 , how many lipid molecules are there in the egg plasma membrane if 25% of the surface is protein? (3 marks)
b. Each fertilized egg cell (zygote) divides 30 times to produce all the eggs that a female child will need in her lifetime. One of these eggs will be fertilized giving rise to a new generation. If lipid molecules are never degraded, how many lipid molecules have you inherited that were synthesized in your grandmother? Assume for calculation purposes that the lipid molecules synthesized by your grandmother is equally divided between the daughter cells at each cell division.