BIO 320 Cell Parts

Which of the following are eukaryotes?
Fungi
Yeast
Gram-negative bacteria
Gram-positive bacteria
Animals

fungi, yeast, animals

the fluid mosaic model refers to cell walls. true/false

false; (the fluid mosaic model refers to cell membranes)

the glycocalyx can be used by bacteria to adhere to surfaces true/false

true

Some prokaryotes may have lipopolysaccharides.
True
False

true; (if they are gram negative)

Prokaryotes lack cell walls cell membranes organelles glycocalyx nucleus

organelles, nucleus

Which of the following are found in Gram-positive bacteria?
thick wall of chitin
thick wall of peptidoglycan
thin wall of chitin
thin wall of peptidoglycan
lipopolysaccharide
outer membrane
plasma (cell) membrane
teichoic acid

thick wall of peptidoglycan, plasma (cell) membrane, teichoic acid

Fungi and yeasts have cell walls made of chitin.
True
False

true

Bacterial cell walls are made of
lipopolysaccharide
chitin
peptidoglycan
teichoic acid
glycocalyx

peptidoglycan

Biofilms are caused by
pili
peptidoglycan
glycocalyx
teichoic acid
lipopolysaccharide

glycocalyx

Which of the following are found in all known cells?
cell wall
cell membrane
lipopolysaccharide
glycocalyx
chitin

cell membrane

Which statements are true?
Nothing survives treatment with a disinfectant
E coli P fimbriae attach to P antigens
The glycocalyx of Streaptococcus pnuemoniae allows it to be virulent.
Nieserria gonorrhea survives the immune system because it can change its fimbriae.
Bacterial chromosomes are larger than plasmids
in eukaryotic ribosomes 40S + 60S = 100S
Animals have cell walls.
Ribosomes are used to make proteins
Gram-negative bacteria have lipopolysaccharides.
All cells have cell membranes.

E coli P fimbriae attach to P antigens, The glycocalyx of Streaptococcus pnuemoniae allows it to be virulent, Nieserria gonorrhea survives the immune system because it can change its fimbriae., Bacterial chromosomes are larger than plasmids, Ribosomes are used to make proteins., Gram-negative bacteria have lipopolysaccharides., All cells have cell membranes.

Which of the following are the glycocalyx involved?
protect against antibiotics
protect against the immune system
attaching to surfaces
give the cell its shape

protect against antibiotics, protect against the immune system, attaching to surfaces

Which of the following can be used by bacteria to move?
fimbriae
flagella
capsule
slime layer

fimbriae, flagella

Which statement is true?
Slimes layers and glycocalicies are types of capsules.
Capsules and glycocalicies are types of slime layers.
Capsules and slime layers are types of glycocalycies.

Capsules and slime layers are types of glycocalycies

What layers surround the cytoplasm of Gram-negative cells going from the inside to the outside?
cell wall
outer membrane
cell membrane

cell membrane, cell wall, outer membrane

Autoclaves destroy endospores.
True
False

true

Fungi and yeast have two phospholipid bilayers.
True
False

false

Gram-negative bacteria have two phospholipid bilayers.
True
False

true

Biofilms consist of cells and glycocalyx.
True
False

true

In prokaryotic ribosomes 50S + 30S = 80S.
True
False

false

Order the following going from the inside of a bacterial cell to the outside.
cell membrane
glycocalyx
cell wall
outer membrane

cell membrane, cell wall, outer membrane, glycocalyx

All living things have ribosomes.
True
False

true

Plasmids are made of protein.
True
False

false: (plasmids are made of DNA)

Neisseria gonorrhoeae hides from the immune system by changing its
capsule
flagella
lipopolysaccharide
fimbriae

fimbriae

Endospores can survive treatment with disinfectant and antiseptics.
True
False

true

Disinfectants are meant for surfaces.
True
False

true

Prokaryotes have linear chromosomes.
True
False

false: ( prokaryotes have circular chromosomes)

Integral membrane proteins are embedded in the plasma membrane because they have hydrophobic regions.
True
False

true

Lipopolysaccharides are also known as endotoxins.
True
False

true

Capsules have a defined shape and are only found in Gram-positive cells.
True
False

False; ( capsules have a defined shape but can be found in gram positive and gram negative cells)

Mice will die when injected with
Smooth strain Streptococcus pneumoniae that have been heat killed
Rough strain Streptococcus pneumoniae
Smooth strain Streptococcus pneumoniae
Smooth strain Streptococcus pneumoniae that have been heat killed and rough strain

Smooth strain Streptococcus pneumoniae, Smooth strain Streptococcus pneumoniae that have been heat killed and rough strain

The glycocalyx can protect bacteria from the immune system.
True
False

true