Why do our cells need enzymes?
A) Enzymes are important sources of nutrients.
B) Enzymes are important inorganic compounds used by cells.
C) Enzymes provide the activation energy of a reaction so it can occur.
D) Enzymes lower the activation energy of a reaction so it can occur.
E) Enzymes increase the activation energy of a reaction so it can occur.
Answer: D
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The effect of oxygen on hemoglobin-carbon dioxide binding is known as the __________
Fill in the blank with the correct word.
Which of the following shifts the O2-Hb curve to the right?
1.Decreased temperature 2.Increased [H+] 3.Increased pH 4.Decreased CO2
Which structure would be found in normal somatic cells of women but not men?
A. A Y chromosome B. An X chromosome C. 22 pairs of autosomal chromosomes D. A Barr body
Which of the following is improperly matched?
A) nursemaid's elbow — iliofemoral ligament B) hyperextension of the knee — anterior cruciate ligament C) hyperflexion of the knee — posterior cruciate ligament D) shoulder separation — acromioclavicular ligament E) bulging disc — nucleus pulposus