b
Rough ER has ribosomes on its surface.
A cell biologist compared the properties of rough endoplasmic reticulum (ER) and smooth ER. She found that one type of ER is used for protein storage, and the other is used for lipid storage. What accounts for this difference?
a
Smooth ER works with the nucleus to synthesize protein.
b
Rough ER has ribosomes on its surface.
c
Rough ER forms proteins and transports them to the mitochondria.
d
Smooth ER creates amino acids for ribosomes to form into proteins.
9 answers
Review the responses below; then SELECT ALL the reasons why we use scientific models.
a
Models allow exploring very small or very large systems.
b
Models are used when systems are too expensive, expansive or impossible to use.
c
Models help you understand complex systems.
d
Models are always expensive.
a
Models allow exploring very small or very large systems.
b
Models are used when systems are too expensive, expansive or impossible to use.
c
Models help you understand complex systems.
d
Models are always expensive.
a
Models allow exploring very small or very large systems.
b
Models are used when systems are too expensive, expansive or impossible to use.
c
Models help you understand complex systems.
Models allow exploring very small or very large systems.
b
Models are used when systems are too expensive, expansive or impossible to use.
c
Models help you understand complex systems.
If a living plant were moved from a freshwater aquarium to a saltwater aquarium, which of the following would occur?
a
The plant's cells would take in extra water.
b
The plant's cells would block sodium movement.
c
The plant's cells would lose sodium.
d
The plant's cells would lose water.
a
The plant's cells would take in extra water.
b
The plant's cells would block sodium movement.
c
The plant's cells would lose sodium.
d
The plant's cells would lose water.
d
The plant's cells would lose water.
The plant's cells would lose water.
You're looking at a sample from your patient under the microscope. Does your patient have a virus?
a
Yes, my patient has a virus, as this a typical viral structure.
b
No, my patient does not have a virus, this is a fungal cell.
c
No, my patient does not have a virus, this is a bacterial cell.
d
Yes, my patient has a virus, since this is not a cell.
a
Yes, my patient has a virus, as this a typical viral structure.
b
No, my patient does not have a virus, this is a fungal cell.
c
No, my patient does not have a virus, this is a bacterial cell.
d
Yes, my patient has a virus, since this is not a cell.
It is not possible to determine whether the patient has a virus based solely on looking at a sample under the microscope.
The table lists the diameters of common viruses and bacteria. A single micrometer (µm) is equivalent to 1000 nanometers (nm).
image 7aecbbab76ac4666b56bcdad1bb2a0e6
Using the table as evidence, which argument can be made about the size of viruses compared to the size of bacteria?
a
Viruses are smaller than most bacteria.
b
Viruses are both smaller and larger than bacteria.
c
Bacteria and viruses are about the same size.
d
Bacteria are smaller than most viruses.
image 7aecbbab76ac4666b56bcdad1bb2a0e6
Using the table as evidence, which argument can be made about the size of viruses compared to the size of bacteria?
a
Viruses are smaller than most bacteria.
b
Viruses are both smaller and larger than bacteria.
c
Bacteria and viruses are about the same size.
d
Bacteria are smaller than most viruses.
a
Viruses are smaller than most bacteria.
Viruses are smaller than most bacteria.
1 answer