According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?

#Question id: 32325

#Unit 1. Molecules and their Interaction Relevant to Biology

Keq for this reaction will be

#Question id: 28772

#Unit 2. Cellular Organization

#Question id: 11478

#Unit 7. System Physiology – Animal

In a mammalian visual system, visual information is integrated at ________.

 I) the lens

 II) the retina

 III) the optic nerve

 IV) the visual cortex

#Question id: 885

#Unit 1. Molecules and their Interaction Relevant to Biology

The half-lives of many cytoplasmic proteins vary with the identities of their N-terminal residues via the  N-end rule.

a) Proteins with the “destabilizing” N-terminal residues contain Asp, Arg, Leu, Lys, and Phe with their half-lives > 2 to 3 hours

b) Proteins with the “destabilizing” N-terminal residues with their half-lives of only 2 to 3 minutes contain; Asp, Arg, Leu, Lys, and Phe

c) Proteins contain Ala, Gly, Met, Ser, Thr, and Val have half-lives of >10 hours are stabilizing N-terminal residue in prokaryotes

d) Those with the “stabilizing” N-terminal residues Ala, Gly, Met, Ser, Thr, and Val have half-lives of >20 hours in eukaryotes

Which of the following is correct?

#Question id: 1935

#Unit 4. Cell Communication and Cell Signaling

Evidence for immune surveillance of tumors comes from a substantially increased incidence of certain cancers in patients with: