Many proteins in the cytosol are ________ that accelerate metabolic reactions
A) carbohydrates
B) enzymes
C) lipids
D) messengers
E) ions
B
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Postmortem sperm retrieval is useful if
A) a man dies after making it known he would want his sperm to be used to conceive a child. B) a woman has inadvertently taken a teratogenic drug when pregnant. C) a man has an incurable disease. D) a man is infertile.
Cytoplasm consists of ______, structures within cells that perform specialized tasks, suspended in fluid called ______
Endosomes....cytoskeleton Organelles...cytosol Cytoskeleton....matrix Cristiae...cisternae
Opening of sodium channels in the axon membrane causes
A) hyperpolarization and decreased positive charge inside the membrane. B) repolarization and increased positive charge inside the membrane. C) hyperpolarization and increased negative charge inside the membrane. D) depolarization and increased negative change inside the membrane. E) depolarization and increased positive charge inside the membrane.
Why can cardiac tamponade be a life-threatening condition?
A) Cardiac tamponade can be life-threatening because accumulating fluid in the pericardial cavity restricts heart movement. B) Cardiac tamponade can be life-threatening because accumulating fluid in the mediastinum restricts heart movement. C) Cardiac tamponade can be life-threatening because loss of fluid in the pericardial cavity causes friction which causes arrhythmias. D) Cardiac tamponade can be life-threatening because loss of fluid in the mediastinum causes friction which causes arrhythmias. E) Cardiac tamponade can be life-threatening because a hole in the heart leads to mixing of oxygenated and deoxygenated blood.