Exam (elaborations)
DAT Biology Actual Exam Solved with Complete Verified Answers
- Course
- Institution
DAT Biology Actual Exam Solved with Complete Verified Answers
[Show more]
Seller
Follow
Content preview
DAT Biology Actual Exam Solvedwith Complete Verified Answers
What is the function of ribosomes? - ✔✔The function of ribosomes is the synthesis of
proteins (assembly).
. What is the general function of the endoplasmic reticulum? - ✔✔The endoplasmic reticulum is
involved in the transport of materials throughout the cell.
(T/F) Proteins synthesized by RER are secreted directly into the cytoplasm. - ✔✔False, they
are secreted into the RER and then sent to the smooth ER where they are packaged into vesicles.
What is the function of the Golgi apparatus? - ✔✔The Golgi receives proteins from the SER,
modifies them, and repackages them into vesicles.
What happens to a secretory vesicle after it is released from the Golgi apparatus? - ✔✔A
secretory vesicle from the Golgi fuses with the cell membrane to release its contents via exocytosis.
(T/F) Vesicles are membrane-bound sacs involved in transport and storage of cellular materials. -
✔✔True
What is a lysosome? - ✔✔A lysosome is an organelle which digests material in the cell
. (T/F) Lysosomes fuse with endocytotic vesicles and help digest their contents - ✔✔True
,How does the pH in the interior of a lysosome compare with the pH in the rest of the cell? -
✔✔The pH inside the lysosome is lower(more acidic).
What would happen if a lysosome released its contents into cytoplasm? - ✔✔If a lysosome
released its contents into the cytoplasm, it would digest the contents of the cell.
What is the function of mitochondria? - ✔✔The mitochondria is the powerhouse of the cell, it is
the site of aerobic respiration.
(T/F) Mitochondria and chloroplasts are similar structures? - ✔✔True
What is the function of the cell wall? - ✔✔The cell wall gives the cell support and shape. It
also protects the cell from external stimuli and desiccation.
What is the function of centrioles? - ✔✔Centrioles pull chromosomes to opposite ends of the
cell during anaphase in mitosis. They are involved in animal cell spindle formation.
What is a centrosome? - ✔✔The centrosome is the region of the cell that contains the centrioles
What is the function of the cytoskeleton? - ✔✔The cytoskeleton gives the cell support and shape,
and adds motility.
. (T/F) Simple diffusion is a passive process that requires energy. - ✔✔False, simple diffusion is
a passive process and therefore DOES NOT require energy.
Define Osmosis: - ✔✔Osmosis is the diffusion of water from an area of low solute concentration
to high solute concentration.
What would happen if the cell was put in hypertonic solution? - ✔✔It would cause the cell to shrink
, Define Isotonic - ✔✔Isotonic means that the concentration inside and outside the cell is
at equilibrium
Define facilitated diffusion - ✔✔Facilitated diffusion is the net movement of dissolved particles
down their concentration gradient with the help of carrier molecules.
What is endocytosis? - ✔✔Endocytosis is the movement of materials into the cell via indentations
in the cell membrane.
What is exocytosis? - ✔✔Exocytosis is the movement of materials outside the cell by vesicles
fusing the cell membrane to release contents
What are the components of a virus? - ✔✔A protein coat and nucleic acid
What kinds of nucleic acid are found in viruses? - ✔✔DNA or RNA
(T/F) Viruses are obligate intracellular parasites. - ✔✔True
What is a bacteriophage? - ✔✔A bacteriophage is a virus that has a bacteria host. It infects
bacteria only.
How do enzymes speed up a reaction? - ✔✔Enzymes lower the activation energy,
(T/F) Enzymes get used up during the course of a reaction - ✔✔False, enzymes do not get used up
(T/F) Enzymes are very selective in the reactions they catalyze. - ✔✔True
What is a substrate? - ✔✔A substrate is what the enzyme acts upon.
What is the active site? - ✔✔The active site is the area that the substrate attaches to on the enzyme.
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 KenAli. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.24. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now