What are isomers?

A. Two elements that can bond with each other
B. Two molecules that have the same arrangement of atoms
C. Two atoms that have the same ionic properties
D. Two molecules that have the same atoms arranged differently


Answer: D

Biology & Microbiology

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Endotoxin belongs to a class of biological molecules called

A. mucopolysaccharides B. lipopolysaccharides C. nucleic acids D. proteins E. peptioglycans

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Which type of plant hormone generally acts as a growth inhibitor?

A) auxins B) gibberellins C) cytokinins D) abscisic acid (ABA)

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The full set of genetic instructions of an organism is its (phenotype/genome/genotype)

What will be an ideal response?

Biology & Microbiology

Choose the answer that corresponds with the correct matches between the phylogenetic tree type (1, 2, or 3) and the information it represents (i, ii, or iii):

1. cladograms 2. phylograms 3. chronograms i. a tree that has its branch tips aligned and indicates only the evolutionary relationships among the taxa shown ii. a tree in which the branch lengths represent actual time rather than the amount of evolu-tionary change iii. a tree in which evolutionary relationships and the amount of sequence change along each branch by using branches of different lengths a. (1-i), (2-ii), and (3-iii) c. (1-ii), (2-i), and (3-iii) b. (1-i), (2-iii), and (3-ii) d. (1-ii), (2-iii), and (3-i)

Biology & Microbiology