記憶度
6問
14問
0問
0問
0問
アカウント登録して、解答結果を保存しよう
問題一覧
1
What is the function of a cell membrane?
Stire of transport components to move substances into and out of the cell
2
What is the function of ribosome?
Site of protein synthesis
3
What is the function of pilus (pili)
attachment to surfaces and other cells
4
What is the function of the LPS layer
protection from large antibiotic molecules
5
What is the function of nucleiod
Area of DNA
6
What is the function of inclusion?
storage of extra nutrients
7
What is the function of the capsule?
protection from dehydration and phagocytosis, role in adhesion to surfaces
8
What is the function of a cell wall?
protection from osmotic bursting
9
What is the function of flagellum
motility of the cell in its environment
10
What is the function of periplasm
site for receptors and digestive enzymes
11
Biological oxidation of molecule is the ____ (removal, addition) of (protons, electrons, enzyme, sugars)_______
removal, electrons
12
The end (last) product of the glycolysis pathway is
pyruvate
13
How many net ATP per glucose does glycolysis pathway product
2
14
After it leaves glycolysis and does 1 round of the Karens cycle what becomes of the 3 carbon of the pyruvate molecule
they are completely oxided to co2
15
The function of the Krebs cycle is to
all of the above
16
What is the carrier of the electrons generated from glycolysis and Karen Cycle
NAD+
17
At the end of the electron transport cycle what is the final acceptor of the traveling electrons
oxygen
18
What organic compound is the most common electron acceptor in fermentation?
pyruvate
19
What is the fate of fermentation end products?
they are excreted into the cell’s environment
20
In chemiosmosis what is pushed out of the cell and what is made in the cell when the substance comes back through the membrane
protons, ATP
21
What best describes the chemical make up of the peptidoglycan comments of bacterial cell walls
Fibers composed of repeating sugar units crosslinked with short peptide chains
22
Why does the bacterial cell need such a strong cell wall? (be specific)
To prevent osmotic water pressure from bursting the cell like an overfilled water balloon
23
What contributes to the G+ cell wall being so much thicker than G- cell walls (be specific)
The peptidoglycan in G+ consists of multiple layers, many more than the few in G-cell walls
24
What makes the G- cell wall so much more complex than the G+ cell wall?
G- has peptidoglycan later plus an outer membrane layer
25
What is the nature of the out membrane of G- cells?
Another membrane like structure plus LPS and porins
26
What is the periplasm and what’s in it
The volume between the inner and outer membrane with enzyme and receptors
27
What is Lipid A?
A component of the LPS latter that can be toxic to humans
28
How is Lipid A related to endotoxin?
Lipid A is the G- cell wall component that is toxic to the body and was named endotoxin
29
How does the human body respond to endotoxin
Edema (swelling), low blood pressure, rapid pulse, and respiration sometimes death
30
Name one species of bacteria that does not contain a cell wall
Mycoplasma
31
The making of protein by the ribosomes reading th genetic code on the messgender RNA is called
translation
32
To assure that the off-spring cells all receive a copy of the same DNA genes as the parent bacterial cell the process of ____ must happen in the parent cell
replication
33
What of the following can be mutagenic agents (choose all that apply)
UV light , gamma radiation , DNA disrupting chemical
34
How do most mutagenic agents exert their activity on cells to cause mutation
they alter or interfere with some activity of the cell DNA
35
What method of horizontal gene transfer in bacterial involves the direct uptake of DNA from dead donors
transformation
36
What method of horizontal gene transfer in bacteria involves the direct cell to cell contact between the live donor and the live recipententconj
conjugation
37
Plasmid are best described as
small, extra chromosomal circle of DNA that can be transferred to another cell
38
By what mechanism does the proces of transduction transfer donor cell genes to a recipient cell
bacterial viruses do the transfer
39
Plasmid can be transferred to other cell with what cell structure?
pili
40
Compared to the size of the host cell’s DNA a plasmid would be
much smaller