Flashcards in Final Deck (62)
Viruses that infect bacterria
have a capsid (protective covering
some are surrounded by an envelope
has nucleic acid in the inside
What is a virulent?
virus with which only destroys the cell doesn't have a dormant stage
What are the 5 steps in lytic viral reproduction?
Replication and synthesis
What is lysogenic conversion?
It is when when bacterial cells containing certain temperate viruses may exhibit new properties (pg. 506)
smaller than a virus and is a naked strand of RNA that infects
What is a prion?
infectous agent that consist only of protein
What are plasmids and what do tey code for?
small fragments of DNA
they can code for catabolic enzymes, genetic enzymes. and for resistance to antibiotics
What are endospores?
bacteria form them
they are dormant, extremely durable cells
What is another name for a decomposer?
What has to happen for a population to be at genetic equilibrium?
the allele and genotype frequencies do not change from generation to generation
hat is ene pools?
all the alleles for all the loci present in the population
How do bacteria reproduce?
asexually ususally by binary fission (process in which one cell divides into 2 similar cells)
sometimes by budding or fragmentation
What is a foraminifera?
marine protist that produces a shell that encloses an amoeboid body
What is dinoflagellates?
a unicellular protist with two flagella
important part of plankton
What are fungal cell walls composed of?
polymer made of subunits of nitrogen-containing sugar
Why are ascomycetes sometimes referred to as sac fungi?
their sexual spores are produced in microscopic sacs called asci
What 2 organisms make up lichen?
What is the male structure called in haploid gametophytes? Female?
What do scientist claim plants needed to become land plants?
needed to be anatomical, physiological, and needed reproductive adaptations
needed waxy cuticle and stomata
monocot seeds contain a single cotyledon
dicot seeds contain two cotyledons
pictures on pg. 590
what does the ectoderm give rise to?
skin and nervous systemm
What does endoderm give rise to?
lining of digestive system
What does the mesoderm give rise to?
most body organs
What is the anticoagulant leeches use?
List the 4 subphylum of artopods. List examples
Myriapoda- centipedes, millipedes
Chelicerata- horshoe crab, spider, ticks, mites
Crustacea- lobsters, pill bugs, barnacles, shrimp
List 3 characteristics of amphibians
use moist skin as well as lungs for gas exchange
mucous glands in skin