A ______________ is a collection of clones that, among themselves, contain all the DNA sequences of the organism.

#Question id: 2155

#SCPH28 | Zoology

Cholesterol is

a. unrelated to any plant lipids.                     

b. not found in chloroplast membranes.

c. encoded by an intron-containing gene on chromosome 23.

d. relatively abundant in the plasma membrane and endocytic membranes.

e. synthesized in the ER.

#Question id: 1273

#SCPH06 I Botany

Proteoglycans are a group of cell-surface and extracellular-matrix substances that

#Question id: 3869

#SCPH28 | Zoology

Which one of the following statements about E. coli RNA polymerase (core enzyme) is false?

#Question id: 3451

#SCPH06 I Botany

Individual A can derive fitness benefit of 220 units by helping Individual B, but incurs a fitness cost of 50 units in doing so following Hamilton’s rule, which of the following relation is not apply for altruism?

#Question id: 4342

#SCPH28 | Zoology

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the operator to the far end of the operon, past the transacetylase (lacA) gene, which of the following processes would likely occur when the cell is exposed to lactose?