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BIO 251 HUMAN ANATOMY & PHYSIOLOGY I WITH 45 ACTUAL QUESTIONS AND ANSWERS UPDATED LATEST NEW!!!!!!

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Pass BIO 251 Human Anatomy & Physiology I with this complete exam guide featuring 45 actual questions and updated answers. Covers fundamental chemistry (atoms, molecules, isotopes, atomic number vs mass number, endergonic vs exergonic reactions, enzymes as biological catalysts that lower activation energy, substrate binding at active sites, metabolites), biochemistry (carbohydrates as body's most important energy source, glycogen storage in liver and muscle, isomers, peptide bonds linking two amino acids, protein functions: support, transport, metabolic regulation, movement — but NOT storage of genetic information), cell biology (plasma membrane: bilayer of lipids, selectively permeable, membrane protein functions: bind ligands, regulate ion passage, carrier molecules, anchors — but NOT energy production; osmosis: movement of water from low to high solute concentration, hypotonic solutions, integral protein channels for water and ions, membrane potential from cation/anion separation, cytoskeleton: microtubules responsible for chromosome movement during cell division), organelles (mitochondria produce most ATP, nucleoli form ribosome components, smooth ER synthesizes lipids, rough ER has attached ribosomes, lysosomes digest foreign material, DNA polymerase required for complementary DNA sequences, centrioles needed for cell division, ribosomes needed for protein synthesis), cell junctions (tight junctions: partial fusion of lipid portions preventing leakage; desmosomes: strong intercellular connections holding skin cells together via intermediate filaments), and tissue types (epithelial cells adapted for secretion, histology: study of tissues, cytology: study of individual cells, embryology: study of early development, regional anatomy: study of superficial and internal features in specific body areas, pathological physiology: changes in function from disease). Essential for human anatomy and physiology students.

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BIO 251 HUMAN ANATOMY & PHYSIOLOGY I WITH 45 ACTUAL
QUESTIONS AND ANSWERS UPDATED LATEST NEW!!!!!!


Chemical reactions that occur in the human body are controlled by special catalytic
molecules called
a) enzymes
b) cytozymes
c) cofactors
d) activators
e) none of the above - ANS... -enzymes

Enzymes:
- are proteins
- function as biological catalysts
- lower the activation energy required for a reaction
- affect only the rate of a chemical reaction
- all of the above - ANS... -all of the above

Substrate molecules bind to enzymes at the
a) amino group sites
b) active sites
c) carboxyl group sites
d) reactant sites
e) none of the above - ANS... -active sites

All the compounds that can be synthesized or broken down by chemical reactions
inside the body are called
a) inorganic compounds
b) organic compounds
c) nutrients
d) metabolites - ANS... -metabolites

Which of the following substances would be the least acidic?
- lemon juice, ph=2
- urine, ph=6
- tomato juice, ph=4
- white wine, ph=3
- stomach secretions, ph=1 - ANS... -urine, ph=6

, inorganic ions function in
a) blood clotting
b) muscle contraction
c) impulse transmission in nerve cells
d) carrying oxygen
e) all of the above - ANS... -all of the above

The study of the structure of individual cells is called
a) cytology
b) histology
c) embryology
d) physiology
e) medical anatomy - ANS... -cytology

The study of all of the superficial and internal features in a specific area of the
body is called
a) surface anatomy
b) regional anatomy
c) surgical anatomy
d) medical anatomy
e) radiographic anatomy - ANS... -regional anatomy

The study of early development processes is termed
a) histology
b) embryology
c) cytology
d) pathology
e) organology - ANS... -embryology

The study of the structure of tissues is called
a) gross anatomy
b) cytology
c) histology
d) organology
e) microbiology - ANS... -histology

The branch of physiology that deals with changes in function resulting from
disease is called
a) histophysiology

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