1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
with histones. Which of the following would also be observed by the student?
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
a. A single circular chromosome
1i 1i 1i
b. A nucleus 1i
c. Free-floating nuclear material 1i 1i
d. No organelles 1i
ANS: B 1i
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucl
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
eus; thus, the nucleus should be observed.
1i 1i 1i 1i 1i 1i
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
describes a prokaryotic cell. 1i 1i 1i
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
a. Metabolic absorption 1i
b. Communication
c. Secretion
d. Respiration
,Latest Updated Examination Study Guide 2022
ANS: D 1i
The ability of the cell to absorb oxygen refers to the cells function of respiration.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
The ability of the cell to function within a society of cells refers to its function of communicatio
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
n.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cells fun
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
ction of secretion. 1i 1i
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
the genetic information be contained?
1i 1i 1i 1i
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C 1i
The region of the cell that contains genetic material, including a large amount of ribonucleic aci
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
d, most of the DNA, and DNA-binding proteins, is the nucleolus.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
The mitochondria is the site of cellular respiration.
1i 1i 1i 1i 1i 1i 1i
The ribosomes are involved in manufacturing of proteins within the cell.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
4. The fluid mosaic model for biologic membranes describes membrane behavior. According to
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
a. Peripheral membrane proteins 1i 1i
b. Integral membrane proteins 1i 1i
, Latest Updated Examination Study Guide 2022
c. Glycoproteins
d. Cell adhesion molecules
1i 1i
ANS: B 1i
Integral membrane proteins float freely in the fluid lipid bilayer.
1i 1i 1i 1i 1i 1i 1i 1i 1i
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopro
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
teins act as cell surface markers.
1i 1i 1i 1i 1i
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
5. Which of the following can bind to plasma membrane receptors?
1i 1i 1i 1i 1i 1i 1i 1i 1i
a. Oxygen
b. Ribosomes
c. Amphipathic lipids 1i
d. Ligands
ANS: D 1i
Ligands are specific molecules that can bind with receptors on the cell membrane. Oxyg
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
en moves by diffusion; it does not bind to receptors.
1i 1i 1i 1i 1i 1i 1i 1i 1i
Ribosomes make proteins and are not involved in binding.
1i 1i 1i 1i 1i 1i 1i 1i 1i
Amphipathic lipids are a portion of the cell membrane.1i 1i 1i 1i 1i 1i 1i 1i
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding would
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
support the diagnosis of metastatic cancer? Alterations in extracellular matrix that include:
1i 1i 1i 1i 1i 1i 1i 1i 1i 1i 1i
a. Decreased fibronectin 1i
b. Increased collagen 1i
c. Decreased elastin 1i
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Profkarl. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
