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42 Cards in this Set
- Front
- Back
The best definition of matter is anything that...
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A. Has weight and takes up space
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When two monosaccharides undergo a dehydration synthesis,
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B. A disaccharide is formed
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When electrons are transformed from one atom to another and the two atoms unite as a result of the electrostatic attraction,
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D. An ionic bond is formed
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Enzymes
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E. All of the above:
are proteins function as biological catalysts lower the activation energy for a reaction affect the rate of a chemical reaction |
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the most important high-energy compound in cells is
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D. adenosine triphosphate
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Each amino acid differs from the others in the
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D. Nature of the R group
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Each of the following is a function of proteins Except one. Identify the exception
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E. Absorbtion
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A class of lipids used to signal cells to undergo changes is called
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D. Hormones
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The most important metabolic fuel molecule in the body is
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E. glucose
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Carbohydrate molecules may be used for which of the following?
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E. All of the above:
a primary energy storage molecule part of a nucleic acid structure the body's most important source of energy receptors of the cell surface |
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which of the following is the most abundant chemical compound in the human body
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A. Water
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All of the compounds that can be synthesized or broken down by chemical reactions inside the body are called
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D. Metabolites
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How many electrons do MOST atoms need in their outer shell to be stable?
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E. 8
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Ionic bonds are formed when
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B. cations and anions are held together by their opposite charges
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The chemical behavior of an atom is determined by the
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C. Number and arrangement of electrons
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The simple units of matter are
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A. Atoms
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Which of the following consists of a network of intracellular membranes with attached ribosomes
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A. Rough ER
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Which of these is an example of carrier-mediated transport
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B. facilitated diffusion
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which of the following contains a double membrane?
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E. both A and B
Mitochondrion Nucleus |
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Which of the following is NOT a function or property of the cell membrane?
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A. ATP protection
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Cellular organelles are located within the
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A. Cytoplasm
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Before a cell can divide by mitosis, which of the following must occur?
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C. Replication of the DNA
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During the process of mitosis, duplicated chromosomes line up along the equator of the cell during
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E. metaphase
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During the process of mitosis, chromatids separate into daughter chromosomes during
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E. Anaphase
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The control center for cellular operations is the
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A. Nucleus
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The cell's DNA is located in the
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D. Nucleus
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Most of the ATP required to power cellular operations is produced in the
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D. mitochondria
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The movement of water across a membrane from an area of low solute concentration to an area of higher solute concentration is known as
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A. osmosis
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The movement of oxygen from an area of high concentration to an area of low concentration is an example of
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C. Diffusion
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Cell membranes are said to be
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C. Selectively permeable
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The watery medium that surrounds a cell is
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C. extracellular fluid
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The basic structural and functional unit of the human body is
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B. The cell
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Epithelia cells are adapted for
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E. All of the above:
providing protection controlling permeability providing sensations producing secretions |
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A type of intercellular connection in which the outermost lipid portions of the two cell membranes is fused is termed
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A. Tight Junction
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The basic shapes of epithelial cells include all EXCEPT which of the following?
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A. Stratified
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Which of the following is a type of secretion in which some cytoplasm is lost with the product?
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C. Apocrine
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Each of the following is a function of the integumentary system EXCEPT one. Identify the exception
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D. Synthesis of vitamin C
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The two components of the cutaneous membrane are the
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A. epidermis and dermis
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The pigment melanin
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D. A and C only
is produced by cells called melanocytes and is found in higher concentration in individuals with darker skin Protects DNA from the damaging effects of UV radiation |
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Exposure of the skin to ultraviolet light
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D. can result in damage to the DNA of cells in the stratum germinativum
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Glands that discharge a waxy secretion into hair follicles are
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C. Sebaceous glands
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Most body odor is the result of bacterial metabolism of the secretions produced by
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B. Apocrine sweat glands
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