Organisms that are characterized by being unicellular, photosynthetic, and having double shells made of silica are known as:
Which of the following is a common feature of diplomonads and parabasalids?
move using cilia
lack a mitochondria
have multiple mitochondria
contain a micronucleus
True or false: Spores are the most common means of reproduction
What is the function of the bacterial capsule and/or slime layer?
all of the above
a and b
Which of the following are described as nonliving particles comprised of nucleic acid genomes enclosed in protein?
Identify which of the following would not belong to the domain eukarya.
Photo synthetic plants
which of the following represents the correct hierarchical order, from largest to smallest.
species, genus, family, class, order
species, family, genus, class, order
class, genus, order, family, species
class, oder, family, genus, species
class, family, order, genus, species
Tuberculosis affects the:
True or false: Stomach ulcers are caused by the bacteria, Helicobacter pylori.
Gram-positive (+) and gram-negative (-) bacteria are characterized by differences in:
the cell wall: gram+ have peptidoglycan, gram-negative have pseudo-peptidoglycan.
the plasma membrane: gram+ have ester-liked lipid, gram-negative have either-linked lipds
the cell wall: gram+ have a thick layer of peptidoglycan and gram-negative have a thin layer of peptidoglycan plus and outer membrane.
chromosomal structure: gram+ have circular chromosomes, gram-negative have linear chromosomes.
True or False: following rRNA sequence analysis, scientists found Domain Bacteria to be closely related to the Domain Eukarya.
Fungi obtain their food by:
absorbing organic molecules that have been digested by secreted enzymes
Which of the following are included in the alveolar phylum:
a and c
the main decomposers in the biosphere are ______ and _____.
Which on the following fungal groups reproduces using aquatic flagellated zoospores?
The tropical diseases such as African sleeping sickness, Chaga's disease, and leishmaniasis are caused by:
which of the following organelles present in eukaryotic cells may have resulted from an endosymbiotic relationship.
A process by which a bacteriophage may change a benign bacteria into a virulent strain:
the cells walls of most bacteria are composed of _____, which is not present in archaea.
most viruses traget specific cells based on what is expressed on the surface of the host cell. As a result, viruses can only replicate in a limited number of host's cells. The phenomenon is commonly referred to as:
The devastating effete of AIDS results from the viral destruction of a specific type of lymphocyte known as ______ cells.
Helper T cells
Cytotoxic B cells
Which of the following eukaryotic kingdoms contains a diverse group of unicellular and multicellular organisms that do not fit into any other eukaryotic kingdom?
The marine multicellular protists including the larger brown algae belong to the:
specialized symbiotic associations between the roots of plants and fungi are called: