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Lecture Exam 2 Blue Questions bio 348 Questions with Correct Answers.
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Lecture Exam 2 Blue Questions bio 348 Questions with Correct Answers.
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Lecture Exam 2 Blue Questions bio 348 Questionswith Correct Answers
What are the 3 types of muscle tissue? Correct Answer-Cardiac,
Smooth, Skeletal-muscle
From which embryonic germ layer are muscle tissues derived from?
Correct Answer-Mesoderm
What are the special characteristics of skeletal muscle tissues? Correct
Answer-multinucleated, striated, voluntary control
Is a muscle considered a tissue or organ? Correct Answer-A whole
muscle is an organ while each muscle is made of skeletal muscle tissue.
What are cisternae and what chemical is stored within the cisternae of
muscle cells? Correct Answer-Ca2+ is stored in cisternae
What molecule serves as the energy source for fermentation? Correct
Answer-muscle glycogen
Where does the muscle cell get molecules for fermentation? Correct
Answer-From within the cell when glycolysis makes pyruvate into
glycogen. Glucose enters the muscle cells through blood facilitated by
the hormone insulin.
,Name 2 locations where ATP synthesis takes place in a cell Correct
Answer-Mitochondria (aerobic) and Sarcoplasm (phosphagen and
anaerobic)
Can cells store ATP? Can cells store creatine phosphate? Correct
Answer-ATP can not be stored but CrP can be stored because it is more
stable.
Name the enzyme that controls phosphagen system reactions and where
would this enzyme be found? Correct Answer-ATP synthase bonds the
3rd phosphate to ADP, APTase breaks these bonds releasing energy.
Creatine Kinase adds or removes a phosphate group from CrP to make
storable energy.
Where would you find enzymes for ATP? Correct Answer-ATP
synthase is found in the mitochondria.
Which source of fuel molecules is more important and why? Blood or
muscle glycogen? Correct Answer-Muscle glycogen is a more important
fuel source because when there is limited oxygen to the system due to
contraction, oxygen cant be taken out of blood because there isnt enough
bloodflow. In these cases, the body uses muscle glycogen which has
been stored.
What are the consequences of lactate production? Correct Answer-
Lactate production can produce lactic acid which causes soreness. It can
also increase oxygen debt.
, Why is anaerobic muscle work more powerful than aerobic muscle
work? Correct Answer-Anaerobic is more powerful than aerobic muscle
work because it is a harder intensity whereas aerobic is more of a
maintenance.
What is the relationship between lactate in the blood and oxygen debt?
Correct Answer-The more lactate built up, the more extreme the oxygen
debt is. This requires more oxygen through breathing after exercise to
replace the muscle glycogen stores that have been used.
Write a summary equation for aerobic cellular respiration Correct
Answer-C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP
What are the benefits of aerobic cell metabolism? Correct Answer-
Aerobic metabolism has high ATP production during rest.
What substrates are available for aerobic energy metabolism? Correct
Answer-Aerobic metabolism uses blood glucose, fatty acids from
adipose tissue, pyruvate, and amino acids from proteins.
What substrates are available for anaerobic energy metabolism? Correct
Answer-Anaerobic metabolism uses muscle glycogen.
Differentiate between gray matter and white matter Correct Answer-
Gray matter is made of nerve cell bodies while white matter is made of
myelinated nerve axons.
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