Biology Answers

Predict how the presence of viable but nonculturable cells in food or water systems might impact public health?

.Describe three hypotheses proposed to account for the decline in cell numbers during the death phase of a growth curve?

Write an account on the components and regulation of gene expression in lac
(lactose) operon with the help of clear and well labelled diagram.

Explain Allopartic an Peripartic speciation highlighting the differences between these two modes of speciaton.

Discuss the importance of sexual reproduction in producing variations.

What organelles would you assume it would be plentiful in the cell that produce and secret oil

Bacterial cells grow at a rate proportional to the volume of dividing cells at that moment. If V0

is the volume of dividing cells at any time t . Find the time at which the volume of the cells will
be double its original size.

f q = 0.3 and there are Hardy-Weinberg proportions, what is the most common genotype and what is its frequency? What is the least frequent genotype and its frequency?

The goat's skin cell contains 60 chromosomes. How many chromosomes does a goat's sperm cell have?

What contribution did Cuvier make to our modern understanding of evolution? What data was Cuvier trying to explain with his idea of catastrophism?