Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
48 Cards in this Set
- Front
- Back
|
Obligate intracellular parasites are
|
Viruses
|
|
|
The genetic material of viruses could be
|
DNA or RNA
|
|
|
Capsomeres are
|
?
|
|
|
Viral envelopes always surround the _____
|
Capsid
|
|
|
In order to classify viruses, scientists have devised a very sophisticated taxonomic system. True/False
|
False
|
|
|
Which of the following represents the correct sequence of reproductive events of a retrovirus in a host?
|
C?
|
|
|
Viruses that infect bacteria
|
Bacteriophages
|
|
|
What infectious pathway is characterized by the immediate destruction of the host?
|
Lytic
|
|
|
Bacteriophages that do not cause immediate destruction of their host
|
Temperate phages?
|
|
|
Vertical transmission refers to
|
Infection of plants by viruses via asexual transmission or infected seeds
|
|
|
Viroids
|
Posses no capsid and have RNA
|
|
|
Plasmids are found in
|
Bacteria and Eukaryotic yeast?
|
|
|
Plasmids are composed of
|
Circular DNA
|
|
|
Protein-like polypeptide chains of approximately 250 amino acids long that can cause Bovine Sponge Encephalopathy
|
Prions
|
|
|
Segments of DNA that can move from one part of the genome to another
|
Transposons
|
|
|
A prophage can convert an otherwise harmless bacterium into a very pathogenic one
|
True
|
|
|
Plasmodesmata
|
Found in plant cells and viruses use them to their advantage
|
|
|
Viruses are classified based on:
|
1) The nucleic acid they possess
2) ? 3) Capsid shape |
|
|
All viruses are species specific
|
False?
|
|
|
Capsids of RNA viruses are produced through transcription and translation of the viral genome
|
True?
|
|
|
New bacterial strains are produced through genetic recombination. One process of genetic recombination involves the uptake of naked DNA and it is called
|
?
|
|
|
0
|
0
|
|
|
0
|
0
|
|
|
During conjugation, the bacterium that possesses the pili is considered to be the
|
Donor, Male
|
|
|
The F factor can exist as a
|
?
|
|
|
When the F+ Plasmid is incorporated into the bacterial chromosome it is called
|
Hfr recombinant bacterium
|
|
|
What do transposons and plasmids have in common?
|
D?
|
|
|
There are bacteria that possess introns. True/False
|
True
|
|
|
How do bacteria divide?
|
Binary fission
|
|
|
The trp operon is __ by default.
|
?
|
|
|
The repressor i the trp operon
|
?
|
|
|
When tryptophan is present
|
?
|
|
|
The lac operon is
|
?
|
|
|
In the lac operon the product of the regulatory gene
|
?
|
|
|
"The laws of physics and chemistry remain unchanged through Earth's history" represents the concept of
|
Uniformitarianism
|
|
|
The immutability of species theory is the same as
|
Fixity of species theory
|
|
|
All living things are organized into a system of increasing complexity according to
|
Lamarck?
|
|
|
According to Malthus, population growth is ____ and resource growth it ____.
|
arithmetic, geometric
|
|
|
A variational hypothesis was presented by
|
?
|
|
|
Structures or organs with the same origin but different functions are referred to as
|
?
|
|
|
Descent with modification means that
|
Certain different species share a common ancestor
|
|
|
Evolution refers to adaptation of individual organisms. True/False
|
False
|
|
|
Evolution refers to populations. True/False
|
True
|
|
|
If at t=0 you have 4 bacteria how many hours is it going to take in order for them to become 32 in ideal conditions?
|
?
|
|
|
During bacterial replication, the highest reproductive activity is observed during the
|
Log phase
|
|
|
An R plasmid provides bacteria with resistance to antibiotics. True/False
|
?
|
|
|
Bacteria have nucleoids, not a nucleus
|
?
|
|
|
The more similar the genetic makeup of organisms is the more closely related they are
|
?
|
