BIOS 251 - (WEEK 3) PRACTICE
EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS
Which membrane-bound organelles carry out oxidation reactions as well
detoxification of toxins that may have adverse effects on cells? - Answer-
Peroxisomes
A cell will use the process of ______________ in order to transport very large items
outside the cell. - Answer-exocytosis
Osmosis can be defined as ____________ across a semipermeable membrane. -
Answer-The diffusion of water.
____________ are the major lipids of plasma membranes. - Answer-phospholipids
Bulk transport via formation of vesicles or membrane-bound sacs is an example of
_____________. - Answer-Active Transport
What is pinocytosis, or "cell drinking"? Select all that apply.
1. An example of bulk transport via formation of vesicles or membrane sacs
2. An example of endocytosis
3. A subtype of active transport - Answer-1. , 2. , 3 are all correct answers (all of the
above).
________________ is an example of a primary active transporter in the form of a
pump that derives energy from hydrolysis of ATP. In the process moves various
solutes against their concentration gradient - Answer-Sodium-Potassium ATPase
Pump
Water moves via osmosis ______________________. - Answer-from an area with a
high concentration of water to one of lower concentration
Which characteristic of a phospholipid contributes to the fluidity of the membrane? -
Answer-
Red blood cells placed in distilled water will __________________. - Answer-swell
as water moves into the cells by osmosis
EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS
Which membrane-bound organelles carry out oxidation reactions as well
detoxification of toxins that may have adverse effects on cells? - Answer-
Peroxisomes
A cell will use the process of ______________ in order to transport very large items
outside the cell. - Answer-exocytosis
Osmosis can be defined as ____________ across a semipermeable membrane. -
Answer-The diffusion of water.
____________ are the major lipids of plasma membranes. - Answer-phospholipids
Bulk transport via formation of vesicles or membrane-bound sacs is an example of
_____________. - Answer-Active Transport
What is pinocytosis, or "cell drinking"? Select all that apply.
1. An example of bulk transport via formation of vesicles or membrane sacs
2. An example of endocytosis
3. A subtype of active transport - Answer-1. , 2. , 3 are all correct answers (all of the
above).
________________ is an example of a primary active transporter in the form of a
pump that derives energy from hydrolysis of ATP. In the process moves various
solutes against their concentration gradient - Answer-Sodium-Potassium ATPase
Pump
Water moves via osmosis ______________________. - Answer-from an area with a
high concentration of water to one of lower concentration
Which characteristic of a phospholipid contributes to the fluidity of the membrane? -
Answer-
Red blood cells placed in distilled water will __________________. - Answer-swell
as water moves into the cells by osmosis
