What six characteristics distinguish living organisms from inanimate objects?
What will be an ideal response?
Answer:
(1) are chemically complex and highly organized;
(2) extract, transform, and
use energy from their environment;
(3) have the capacity to precisely self-replicate and self-assemble;
(4) exploit a chemical interplay with their environment;
(5) possess programmatically defined
functions; and
(6) evolve to new forms over many generations.
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Select the pairing that is incorrect
a. disaccharide – two sugar subunits b. monosaccharide – one sugar subunit c. polysaccharide – three (only) sugar subunits d. polysaccharide – three or more sugar subunits
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color
The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents? What will be an ideal response?
When analyzing a cross involving two traits, each trait is analyzed separately, and then the frequencies of each are
combined to yield the observed phenotypic ratios. a. True b. False
Why are Gram-negative bacteria more resistant than Gram-positive bacteria to damage by certain chemical agents like lysozyme?
A) Gram-negative bacteria contain peptidoglycan in their cell wall. B) Gram-negative bacteria have a thicker layer of peptidoglycan in their cell wall. C) Gram-negative bacteria lack a cell wall. D) Gram-negative bacteria have an outer membrane as part of their cell wall. E) Gram-negative bacteria have porins.