What are the three main parts of a human body cell? - plasma membrane, cytoplasm, nucleus
The three main components of the lipid bilayer portion of a plasma membrane are -
phospholipids, cholesterol, and glycolipids
What are the nonpolar parts of phospholipids? - fatty acid tail groups
Which o...
Random test bank questions
What are the three main parts of a human body cell? - ✔✔✔plasma membrane, cytoplasm, nucleus
The three main components of the lipid bilayer portion of a plasma membrane are - ✔✔✔
phospholipids, cholesterol, and glycolipids
What are the nonpolar parts of phospholipids? - ✔✔✔fatty acid tail groups
Which of the following is the transport process by which gases, like O2 and CO2, move through a
membrane? - ✔✔✔simple diffusion
In this type of transport process, a solute (e.g. glucose) binds to a specific carrier protein on one side of
the membrane. This binding induces a conformational change in the carrier protein that results in the
solute moving down its concentration gradient to the other side of the membrane - ✔✔✔facilitated
diffusion
SAYS NOTHING ABOUT ATP
What transport process uses the energy stored in a Na+ or H+ concentration gradient to drive other
substances across the membrane against their own concentration gradients? - ✔✔✔secondary active
transport
what is a pseudopod? - ✔✔✔extensions of the plasma membrane of the phagocyte that eventually
surround the particle forming a phagosome
Most intravenous solutions are _____ with respect to blood cells? - ✔✔✔isotonic
, The difference in concentration of a specific chemical, like Na+, on the inside and outside of a plasma
membrane is referred as a(n) - ✔✔✔concentration gradient
The outermost layer of connective tissue surrounding a skeletal muscle is the - ✔✔✔epimysium
Contraction of myofibrils within a muscle fiber begins when - ✔✔✔Contraction of myofibrils within a
muscle fiber begins when
Which correctly lists the sequence of structures that action potentials must move through to excite
skeletal muscle contraction? - ✔✔✔axon of neuron, sarcolemma, T tubule
Which functions as a motor protein in all three types of muscle tissue? - ✔✔✔myosin
What energizes the myosin head? - ✔✔✔ATP hydrolysis reaction
Which ATP production would be sufficient to run in place for one minute? - ✔✔✔anaerobic cellular
respiration
A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving
down the somatic motor neuron is known as - ✔✔✔twitch contraction
Why would cardiac muscles have longer refractory periods than skeletal muscles? - ✔✔✔to preserve
the normal rhythm of the heart and prevent fatigue
World class shot-putters will have a higher percentage of ______in their arm muscles. - ✔✔✔fast
glycolytic fibers
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