問題一覧
1
Bacteria are known to be ubiquitous, meaning
they are present everywhere
2
Bacteria are currently considered a member of which domain?
Monera
3
Members of Domain Archaea
are generally considered extremophiles
4
A researcher places 1 million viruses in a test tube (floating in sterile distilled water). The overnight, a temperature that they tolerate well. How many viruses would you expect to
about the same number, they will not reproduce without a host cell
5
When spontaneous generation was first debated by the scientific community, believers ir living things could turn into living things, but they often needed exposure to good "humo famous experiment (shown in the picture below), which jar suggested that non-living thin while addressing people's concerns about the "humors"?
the right jar
6
Hooke, Schwann, and Schliden (although about two hundred years apart) all contribute
all living things are made up of one or more cells
7
Who was known for founding the idea of "binomial nomenclature", which we still use to
Carolus Linnaeus
8
The Eastern Chipmunk is in the genus "Tamias". Which of the following could be a correct
tamias striatus (italic)
9
Which of the following taxonomic groups is more broad than Order?
class
10
In the arctic, researchers are studying two populations of bears that cannot reproduce v both members of the same (choose the most specific likely group from the following possibilities)
genus
11
A single-celled eukaryotic organism present under the microscope with membrane-boun which of the following Kingdoms?
protista
12
Bacteria make the older approach of categorizing organisms based off of difficult
physical characteristics, there are so many shapes of bacteria it becomes confusing
13
Adding which of the following subatomic particles to an atom would not change its charge
neuron
14
Adding an electron to a chlorine atom (CI) would form a ___ with a ___ charge
ion, negative
15
What holds true chemical bonds together?
sharing of electrons between the atoms
16
are technically not bonds, they are "interactions", and are the weakest of the bare technically not bonds, they are "interactions", and are the weakest of the bond
hydrogen bond
17
If a bacterium is swimming through water that has a relatively high amount of H+ ions, it is
acidic
18
The pH of blood is generally 7.4, which is
weakly basic
19
How many carbons is present in the following moleculer structure
12
20
Which of the following would not be a function of carbohydrates in a bacterium?
instruct the bacterium how to make proteins
21
The cell membrane is a bilayer of which kind of macromolecule?
lipids
22
Which of the following is a function of lipids in bacteria?
providing energy
23
what is the monomer of proteins
animo acids
24
How does a bacterium know how to make a specifie protein?
the information is stored in DNA which floats in the middle of the cell
25
In DNA, guanine binds to
cytosine
26
How is the general structure of DNA different from RNA?
DNA is double stranded (a helix), while RNA Is usually single stranded
27
Which of the following are found in both prokaryotic and eukaryotic cells?
ribosomes
28
State both the shape and arrangement for the bacteria in the following image.
cocci and tetrads
29
State both the shape and arrangement for the bacteria in the following image.State both the shape and arrangement for the bacteria in the following image.
Bacilli, streptobacilli
30
Lipopolysaccharides are considered "endotoxins", which are generally shed from the ou stress. This can cause an infected person to go into shock.
gram negative
31
Structurally, peptidoglycan is considered
very strong, providing structure to the bacterial cell wall
32
During times of stress, some bacteria can form____ around their DNA, making resists. The bacteria can later regrow when conditions are more favorable.
an endospore
33
Which of the following is not correct about pili?
they can help bacteria perform photosynthesis
34
What is the name and function of the organelle labeled "A"?
mitochondrion
35
The arm-like extensions shown in the picture of an amoeba are called
pseudopods, and allow the amoeba to both move and eat
36
A cell is placed into a solution that makes it swell up and burst (lyse). What kind of sol
hypotonic
37
Imagine that a sample of bacteria that typically lives in a salt-water environment is pla the solute concentration inside the bacteria is higher than the water around it, what w occurs?
water will fill the bacterial cells, making them swell up
38
Transporting solute (the small green particles) out of this cell ____
would require active transport because the solute is moving against the concentration gradient
39
Antibiotics are drugs that target bacterial cells much more specifically than human cells (killing bacteria while keeping hunan cells intact - at proper doses). Imagine that a newly developed antibiotic is very good at preventing bacterial growth, but is not very good at crossing cell membranes. an essay: State whether you feel this drug would best target Gram positive or Gram negative bacteria, and explain why (specifically). n your answer, describe (in writing) the physical attributes of both Gram postitive vs. Gram negative bacteria, using this description to justify our answer.
:)