In the context of phage infection, "induction" means

a. the transition from a lysogenic to a lytic state.
b. promotion of the expression of phage genes.
c. release of phage particles from a host cell.
d. integration of phage DNA into the bacterial chromosome.
e. packaging of phage DNA into protein coats.


Ans: a

Biology & Microbiology

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Hair cells in the vertebrate ear are responsible for transducing sound pressure waves. Ion channels in the hair cell membrane open when _____

A) a chemical ligand binds to the ion channel B) light is absorbed by a molecule in the membrane C) the cell membrane reaches a threshold voltage D) the membrane is distorted mechanically

Biology & Microbiology

When compared to the solution, the egg that gained weight was ______.  

  Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes.


A.  Hypertonic
B.  Hypotonic
C.  Isotonic

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?

Gather Content
· What do you know about osmosis? What other information is related to the question?

Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?

Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

In photosynthesis, carbon dioxide enters the leaf of a plant through its open stomata

Indicate whether the statement is true or false

Biology & Microbiology

The productivity of an ecosystem 

A. can be measured in biomass produced. B. can change depending on the stage of succession. C. is dependent on such abiotic factors as; temperature, water, and sunlight. D. All of these answers are true.

Biology & Microbiology