Microbiology three

25問 • 1年前

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問題一覧

Which of the following pairs is mismatched?

centrosome - food storage

Which of the following eukaryotic organelles is correctly matched with its function?

vacuole-storage of materials

How do spirochetes and spirilla differ?

Spirilla have an external flagella but spirochetes have axial filaments.

Which membrane transport mechanism requires ATP?

Active transport

Which type of solution would cause a bacterium with a weak or damaged cell wall to burst as water moves into the cell?

A hypotonic solution

A gram-positive bacteria suddenly acquires resistance to the antibiotic methicillin. This trait most likely occurred due to

Conjugation

Where are phospholipids most likely found in a eukaryotic cell?

the plasma membrane, around organelles, and surrounding flagella

Which of the following statements is INCORRECT regarding prokaryotic cells?

They lack of plasma membrane

Endospores are a reproductive structure

False

Which of the following is NOT found in mitochondria and prokaryotes?

Cell wall

The internal structure of eukaryotic cilia and flagella are the same.

True

The DNA found in most bacterial cells

is circular in structure

Which of the following statements accurately describes specific bacterial cell walls?

In gram-negative bacteria, the thin layer of peptidoglycan is surrounded by an external membrane made of phospholipids, lipopolysaccharides, and proteins.

Small, hydrophobic molecules pass through a cell membrane most easily by diffusion.

True

Which statement regarding the structure or function of ribosomes is correct?

In eukaryotes, the ribosomes found in chloroplasts and mitochondria are 70S ribosomes, which are similar in size to prokaryotic ribosomes.

You are observing a Gram stain of spherical-shaped microorganisms that are linked in a chain and stain purple. How would you describe these bacteria using the correct terminology for the cell shape and arrangement?

gram-positive streptococci

Which of the following facts does NOT provide evidence for the endosymbiotic theory?

Prokaryotes contain peptidoglycan in their cell walls.

In bacteria, photosynthetic pigments are found in

chromatophores.

Which of the following have a cell wall?

fungi

Many enzymes in both prokaryotic and eukaryotic cells are compartmentalized within organelles.

False

In which eukaryotic organelle are amino acids and fatty acids oxidized?

peroxisome

The difference between simple diffusion and facilitated diffusion is that facilitated diffusion

requires transporter proteins.

The number of organelles such as chloroplasts, mitochondria, and rough endoplasmic reticulum is the same in all eukaryotic cells.

False

Which of the following is NOT characteristic of the glycocalyx found in bacteria?

creates a slimy, slippery coating that prevents bacteria form attaching to surfaces

Which of the following is found in the cytoplasm of prokaryotic cells but is ABSENT from the cytoplasm of eukaryotic cells

DNA

microbiology

microbiology

microbiology 2

microbiology 2

問題一覧

Which of the following pairs is mismatched?

centrosome - food storage

Which of the following eukaryotic organelles is correctly matched with its function?

vacuole-storage of materials

How do spirochetes and spirilla differ?

Spirilla have an external flagella but spirochetes have axial filaments.

Which membrane transport mechanism requires ATP?

Active transport

Which type of solution would cause a bacterium with a weak or damaged cell wall to burst as water moves into the cell?

A hypotonic solution

A gram-positive bacteria suddenly acquires resistance to the antibiotic methicillin. This trait most likely occurred due to

Conjugation

Where are phospholipids most likely found in a eukaryotic cell?

the plasma membrane, around organelles, and surrounding flagella

Which of the following statements is INCORRECT regarding prokaryotic cells?

They lack of plasma membrane

Endospores are a reproductive structure

False

Which of the following is NOT found in mitochondria and prokaryotes?

Cell wall

The internal structure of eukaryotic cilia and flagella are the same.

True

The DNA found in most bacterial cells

is circular in structure

Which of the following statements accurately describes specific bacterial cell walls?

In gram-negative bacteria, the thin layer of peptidoglycan is surrounded by an external membrane made of phospholipids, lipopolysaccharides, and proteins.

Small, hydrophobic molecules pass through a cell membrane most easily by diffusion.

True

Which statement regarding the structure or function of ribosomes is correct?

In eukaryotes, the ribosomes found in chloroplasts and mitochondria are 70S ribosomes, which are similar in size to prokaryotic ribosomes.

gram-positive streptococci

Which of the following facts does NOT provide evidence for the endosymbiotic theory?

Prokaryotes contain peptidoglycan in their cell walls.

In bacteria, photosynthetic pigments are found in

chromatophores.

Which of the following have a cell wall?

fungi

Many enzymes in both prokaryotic and eukaryotic cells are compartmentalized within organelles.

False

In which eukaryotic organelle are amino acids and fatty acids oxidized?

peroxisome

The difference between simple diffusion and facilitated diffusion is that facilitated diffusion

requires transporter proteins.

The number of organelles such as chloroplasts, mitochondria, and rough endoplasmic reticulum is the same in all eukaryotic cells.

False

Which of the following is NOT characteristic of the glycocalyx found in bacteria?

creates a slimy, slippery coating that prevents bacteria form attaching to surfaces

Which of the following is found in the cytoplasm of prokaryotic cells but is ABSENT from the cytoplasm of eukaryotic cells

DNA