BIOS 251 - (WEEK 3) PRACTICE QUESTIONS AND ANSWERS
Which membrane-bound organelles carry out oxidation reactions as well detoxification of
toxins that may have adverse effects on cells? - -Peroxisomes
-A cell will use the process of ______________ in order to transport very large items outside
the cell. - -exocytosis
-Osmosis can be defined as ____________ across a semipermeable membrane. - -The diffusion
of water.
-____________ are the major lipids of plasma membranes. - -phospholipids
-Bulk transport via formation of vesicles or membrane-bound sacs is an example of
_____________. - -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 - -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 - -Sodium-Potassium ATPase Pump
-Water moves via osmosis ______________________. - -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? - -
-Red blood cells placed in distilled water will __________________. - -swell as water moves into
the cells by osmosis
-Phagocytic white blood cells engulf and digest bacteria and cellular debris. Which
organelle would be most involved in the digestion of the engulfed material? - -Lysosomes
-The smallest unit of life that demonstrates all the properties of life is a(n)
___________________. - -cell
-Protein synthesis takes place where? Select all that apply.
Which membrane-bound organelles carry out oxidation reactions as well detoxification of
toxins that may have adverse effects on cells? - -Peroxisomes
-A cell will use the process of ______________ in order to transport very large items outside
the cell. - -exocytosis
-Osmosis can be defined as ____________ across a semipermeable membrane. - -The diffusion
of water.
-____________ are the major lipids of plasma membranes. - -phospholipids
-Bulk transport via formation of vesicles or membrane-bound sacs is an example of
_____________. - -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 - -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 - -Sodium-Potassium ATPase Pump
-Water moves via osmosis ______________________. - -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? - -
-Red blood cells placed in distilled water will __________________. - -swell as water moves into
the cells by osmosis
-Phagocytic white blood cells engulf and digest bacteria and cellular debris. Which
organelle would be most involved in the digestion of the engulfed material? - -Lysosomes
-The smallest unit of life that demonstrates all the properties of life is a(n)
___________________. - -cell
-Protein synthesis takes place where? Select all that apply.
