Question: 1. (TCO 1) Which of the following roles do microbes play in the environment? (Points : 4)  &…

       lobbied for improved hospitals
and public health policy.
       introduced antiseptic
techniques into the practice of nursing.
       saved many lives during World
War II with proper hygiene standards.
       studied cholera during the
war.
       A and B

       meters (m).
       millimeters (mm).
       micrometers (µm).
       nanometers (nm).
       centimeters (cm).

       The point where the size of a
specimen is enlarged.
       The point where light
traveling from a specimen hits the convex lens.
       The point where refraction
(bending of light) occurs.
       The point where light from the
lens is focused.
       The point where light
traveling from a specimen hits the objective lens.

       They have unique
ribosomes.
       Mycolic acid is found in their
cell walls.
       They do not have a cell
wall.
       Their cell walls are composed
solely of amino acids.
       They do not have a cytoplasmic
membrane.

       Eukaryotes were formed from
the union of small anaerobic prokaryotes with larger aerobic
prokaryotes.
       The cristae of mitochondria
evolved from peptidoglycan containing cell walls.
       The endosymbiotic theory is
universally accepted.
       All the statements are
true.
       All the statements are
false.

       Algae are components of
phytoplankton.
       All algae are multicellular
organisms.
       Most red algae are found in
salt water.
       Algae are eukaryotic
organisms.
       Algae may grow in fresh or
salt water.

       Vegetative budding
       Binary fission
       Conjugation
       A and B
       B and C

       True
       False
       Fungi do not reproduce.
       Huge underground Fungi are the
source for all fungi.
       C and D

       Viroids can infect plants and
fungi.
       Viroids lack nucleic
acid.
       Prions replicate themselves by
using the DNA polymerase of the host cell.
       Prions can be destroyed by
cooking meat to an internal temperature of 160° F.
       Prion diseases involve
neurological symptoms.

       Nucleotide analogs
       Nitrous acid
       Ultraviolet light
       Benzopyrene
       Gamma rays

       Ribose
       Hydrogen bonds
       Uracil
       Ionic bonds
       Phosphate

       They are found in the
nucleoid.
       They can replicate
autonomously.
       They carry genes for essential
metabolic functions.
       They are small, circular DNA
molecules.
       They are small, circular DNA
molecules that can replicate autonomously.

       Hydrostatic pressure
       Temperature
       Nitrogen source
       pH
       Osmotic pressure