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TLS Online TPP Program

#Question id: 649

Choose INCORRECT statement from the following

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The rates of enzymatically catalyzed reactions are typically 106 to 1012 times greater than those of the corresponding uncatalyzed reactions

  2. The catalytic activities of many enzymes vary in response to the concentrations of substances other than their substrates.

  3. When the reaction involves two molecules, such as the association reaction P + Là PL, it is called second order, and its rate constant (ka) has units of M-2 s-1

  4. When the reaction involves one molecule, such as the dissociation reaction PL à P + L, the reaction is first order and the rate constant (kd) has units of (s-1).

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TLS Online TPP Program

#Question id: 5538

#Unit 5. Developmental Biology

The first truly vertebrate phase of development is manifested by the formation of the
TLS Online TPP Program

#Question id: 2685

#Unit 2. Cellular Organization

There are about 3 billion chemical base pairs in human DNA. Approximately what percent of these base pairs actually code for genes?
TLS Online TPP Program

#Question id: 19801

#Unit 12. Applied Biology

The inheritance of resistance to Cry proteins in insect populations is usually _______ and is governed by one or few major genes
TLS Online TPP Program

#Question id: 2826

#Unit 2. Cellular Organization

An open reading frame (ORF) is defined as a DNA sequence that

a. begins with a start codon.               

b. ends with a stop codon.

c. contains 50 codons.   

d. contains approximately an equal frequency of A, T, G, and C.
TLS Online TPP Program

#Question id: 28459

#Unit 5. Developmental Biology

 In c.elegans, the cell secreting LAG-2 and LIN-12 protein act as ligand and the receptor for this molecule, if Lin-12 undergo Loss-of-function mutation resulting,