A busy student pours herself a cup of coffee and adds a sugar cube. A moment later the phone rings so she doesn't have time to stir it. Ten minutes later she returns to her coffee, and when she tastes it, it is obvious that the sugar has dissolved and that the coffee is uniformly sweet. What happened?

#Question id: 8692

#SCPH06 I Botany

Which of the following statements is accurate with regard to a phylogeny, as represented by a phylogenetic tree?

#Question id: 2651

#SCPH05 I Biotechnology

In the presence of lactose, how long does it take for the lac operon to be expressed?

#Question id: 18074

#SCPH05 I Biotechnology

#Question id: 14164

#SCPH05 I Biotechnology

Stoichiometric equations are used to represent growth of microorganisms provided a ' molecular formula' for the cells is available. The molecular formula for biomass is obtained by measuring the amounts of C, N, H, O and other elements in cells. For a particular bacterial strain, the molecular formula was determined to be C_4.4H_7.30 _1.2N_0.86 . These bacteria are grown under aerobic conditions with hexadecane (C₁₆H₃₄) as substrate. The reaction equation describing growth is:

  Assuming 100% conversion, what is the yield of cells from hexadecane in g g^-l?   

#Question id: 3528

#SCPH01 Biochemistry

Consider the following cross:

A/a ; B/b ; C/c ; D/d ; E/e  X a/a ; B/b ; c/c ; D/d ; e/e

What proportion of progeny will phenotypically resemble the first parent?