microbiology test

39問 • 11ヶ月前

ユーザ名非公開

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問題一覧

Bacteria are known to be ubiquitous, meaning

they are present everywhere

Bacteria are currently considered a member of which domain?

Monera

Members of Domain Archaea

are generally considered extremophiles

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

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

Hooke, Schwann, and Schliden (although about two hundred years apart) all contribute

all living things are made up of one or more cells

Who was known for founding the idea of "binomial nomenclature", which we still use to

Carolus Linnaeus

The Eastern Chipmunk is in the genus "Tamias". Which of the following could be a correct

tamias striatus (italic)

Which of the following taxonomic groups is more broad than Order?

class

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

A single-celled eukaryotic organism present under the microscope with membrane-boun which of the following Kingdoms?

protista

Bacteria make the older approach of categorizing organisms based off of difficult

physical characteristics, there are so many shapes of bacteria it becomes confusing

Adding which of the following subatomic particles to an atom would not change its charge

neuron

Adding an electron to a chlorine atom (CI) would form a ___ with a ___ charge

ion, negative

What holds true chemical bonds together?

sharing of electrons between the atoms

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

If a bacterium is swimming through water that has a relatively high amount of H+ ions, it is

acidic

The pH of blood is generally 7.4, which is

weakly basic

How many carbons is present in the following moleculer structure

Which of the following would not be a function of carbohydrates in a bacterium?

instruct the bacterium how to make proteins

The cell membrane is a bilayer of which kind of macromolecule?

lipids

Which of the following is a function of lipids in bacteria?

providing energy

what is the monomer of proteins

animo acids

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

In DNA, guanine binds to

cytosine

How is the general structure of DNA different from RNA?

DNA is double stranded (a helix), while RNA Is usually single stranded

Which of the following are found in both prokaryotic and eukaryotic cells?

ribosomes

State both the shape and arrangement for the bacteria in the following image.

cocci and tetrads

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

Lipopolysaccharides are considered "endotoxins", which are generally shed from the ou stress. This can cause an infected person to go into shock.

gram negative

Structurally, peptidoglycan is considered

very strong, providing structure to the bacterial cell wall

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

Which of the following is not correct about pili?

they can help bacteria perform photosynthesis

What is the name and function of the organelle labeled "A"?

mitochondrion

The arm-like extensions shown in the picture of an amoeba are called

pseudopods, and allow the amoeba to both move and eat

A cell is placed into a solution that makes it swell up and burst (lyse). What kind of sol

hypotonic

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

Transporting solute (the small green particles) out of this cell ____

would require active transport because the solute is moving against the concentration gradient

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.

test 1

test 1

lab practical

lab practical

FINAL TEST!

FINAL TEST!

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問題一覧

Bacteria are known to be ubiquitous, meaning

they are present everywhere

Bacteria are currently considered a member of which domain?

Monera

Members of Domain Archaea

are generally considered extremophiles

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

the right jar

Hooke, Schwann, and Schliden (although about two hundred years apart) all contribute

all living things are made up of one or more cells

Who was known for founding the idea of "binomial nomenclature", which we still use to

Carolus Linnaeus

The Eastern Chipmunk is in the genus "Tamias". Which of the following could be a correct

tamias striatus (italic)

Which of the following taxonomic groups is more broad than Order?

class

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

A single-celled eukaryotic organism present under the microscope with membrane-boun which of the following Kingdoms?

protista

Bacteria make the older approach of categorizing organisms based off of difficult

physical characteristics, there are so many shapes of bacteria it becomes confusing

Adding which of the following subatomic particles to an atom would not change its charge

neuron

Adding an electron to a chlorine atom (CI) would form a ___ with a ___ charge

ion, negative

What holds true chemical bonds together?

sharing of electrons between the atoms

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

If a bacterium is swimming through water that has a relatively high amount of H+ ions, it is

acidic

The pH of blood is generally 7.4, which is

weakly basic

How many carbons is present in the following moleculer structure

Which of the following would not be a function of carbohydrates in a bacterium?

instruct the bacterium how to make proteins

The cell membrane is a bilayer of which kind of macromolecule?

lipids

Which of the following is a function of lipids in bacteria?

providing energy

what is the monomer of proteins

animo acids

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

In DNA, guanine binds to

cytosine

How is the general structure of DNA different from RNA?

DNA is double stranded (a helix), while RNA Is usually single stranded

Which of the following are found in both prokaryotic and eukaryotic cells?

ribosomes

State both the shape and arrangement for the bacteria in the following image.

cocci and tetrads

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

Lipopolysaccharides are considered "endotoxins", which are generally shed from the ou stress. This can cause an infected person to go into shock.

gram negative

Structurally, peptidoglycan is considered

very strong, providing structure to the bacterial cell wall

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

Which of the following is not correct about pili?

they can help bacteria perform photosynthesis

What is the name and function of the organelle labeled "A"?

mitochondrion

The arm-like extensions shown in the picture of an amoeba are called

pseudopods, and allow the amoeba to both move and eat

A cell is placed into a solution that makes it swell up and burst (lyse). What kind of sol

hypotonic

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

Transporting solute (the small green particles) out of this cell ____

would require active transport because the solute is moving against the concentration gradient