Which of the following would have the largest size?B.a moleculeC.a protonD.a neutronE.an electron2 points  

1. A.an atom

QUESTION 2

1. When activated, lysosomes function in:
2. A.the formation of new cell membranes
3. B.the synthesis of proteins
4. C.digestion of foreign material
5. D.the synthesis of lipids
6. E.cell division

2 points  

QUESTION 3

1. Water molecules and small ions enter a cell through:
2. A.channels in some integral proteins
3. B.peripheral proteins
4. C.lipid channels
5. D.peripheral carbohydrates
6. E.small holes in the lipid layer

2 points  

QUESTION 4

1. Chemical reactions that occur in the human body are controlled by special catalytic molecules called:
2. A.enzymes
3. B.cytozymes
4. C.cofactors
5. D.activators
6. E.none of the above

2 points  

QUESTION 5

1. Enzymes:
2. A.are proteins
3. B.function as biological catalysts
4. C.lower the activation energy required for a reaction
5. D.affect only the rate of chemical reaction
6. E.all of the above

2 points  

QUESTION 6

1. Cell membranes are said to be:
2. A.Impemeable
3. B.freely permeable
4. C.selectively permeable
5. D.actively permeable
6. E.none of the above

2 points  

QUESTION 7

1. The study if early developmental processes is termed:
2. A.Histology
3. B.Embryology
4. C.cytology
5. D.pathology
6. E.organology

2 points  

QUESTION 8

1. Each of the following is a function of proteins except one: Identify the exception?
2. A.support
3. B.transport
4. C.metabolic regulation
5. D.storage of genetic information
6. E.movement 

2 points  

QUESTION 9

1. Substrate molecules bind to enzymes at the:
2. A.amino group sites:
3. B.active sites
4. C.carboxyl group sites
5. D.reactant sites
6. E.none of the above

2 points  

QUESTION 10

1. Molecules that have the same molecular formula but different structural formulas are called:
2. A.isotopes
3. B.isomers
4. C.isozymes
5. D.isotypes
6. E.none of the above

2 points  

QUESTION 11

1. Which of the following is NOT a function of membrane proteins?
2. A.bind to ligands
3. B.regulate the passage of ions
4. C.carrier molecules for various solutes
5. D.anchors or stabilizers for the cell membrane
6. E.production of energy

2 points  

QUESTION 12

1. Which of the following consist of a network of intracellular membranes with attached ribosomes?
2. A.rough endoplasmic reticulum
3. B.smooth endoplasmic reticulum
4. C.mitochondria
5. D.nucleoli
6. E.golgi apparatus

2 points  

QUESTION 13

1. The smallest chemical units of matter are:
2. A.atoms
3. B.molecules
4. C.protons
5. D.neutrons
6. E.electrons

2 points  

QUESTION 14

1. If a cell lacked the enzyme DNA-polymerase, it could not:
2. A.form protein
3. B.form complementary sequences of dna
4. C.link piece of dna together
5. D.form spindle fibers
6. E.form a new nuclear membrane during telophase

2 points  

QUESTION 15

1. Carbohydrate molecules:
2. A.serve as a structural component of human cells
3. B.form the regulatory molecules known as enzymes 
4. C.are the body's most important source of energy
5. D.help to protect vital organs from damage
6. E.contain the genetic information found in cells

2 points  

QUESTION 16

1. A solution that contain a lower solute concentration than the cytoplasm of a cell is called:
2. A.a merotonic
3. B.hypteronic
4. C.isotomic
5. D.hypotonic
6. E.none of the above

2 points  

QUESTION 17

1. The branch of Physiology that deals with the changes in function that result from disease is called:
2. A.histophysiology
3. B.special physiology
4. C.system physiology
5. D.pathological physiology
6. E.physiological chemistry

2 points  

QUESTION 18

1. You would expect to find a peptide bond linking:
2. A.two simple sugars
3. B.two amino acids
4. C.two nucleotides
5. D.a fatty acid and a glycerol molecule
6. E.a cholesterol molecule and a fatty acid molecule

2 points  

QUESTION 19

1. The atomic number represents the number of :
2. A.protons in an atom
3. B.electrons in an ion
4. C.neutron in an atom
5. D.protons and neutrons
6. E.neutrons and electrons

2 points  

QUESTION 20

1. Inorganic ions function in:
2. A.blood clotting
3. B.muscle contraction
4. C.impulse transmissons in nerve cells
5. D.carrying oxygen
6. E.all of the above

2 points  

QUESTION 21

1. The potential difference across the cell membrane is due to the separation of:
2. A.carbohydrate molecules
3. B.water molecules
4. C.cations and anions
5. D.protein and carbohydrate molecules
6. E.vitamins and hormones

2 points  

QUESTION 22

1. The most abundant Cells in the epidermis are:
2. A.adipocytes 
3. B.keratinocytes
4. C.Merkel cells
5. D.melanocytes
6. E.Langerhans cells

2 points  

QUESTION 23

1. The study of the structures of tissues is called:
2. A.Gross anatomy
3. B.Cytology
4. C.Histology
5. D.organology
6. E.microbiology

2 points  

QUESTION 24

1. All of the compounds that can be synthesized or broken down by chemical reactions inside the body are called:
2. A.inorganic compounds
3. B.organic compounds
4. C.nutrients
5. D.metabolites

2 points  

QUESTION 25

1. If an animal cell lacked centrioles, it would not be able to:
2. A.move
3. B.synthesize proteins
4. C.produce dna
5. D.metabolize sugars
6. E.divide

2 points  

QUESTION 26

1. The Study of all of the superficial and internal features in a specific are of the body is called:
2. A.surface anatomy
3. B.regional anatomy
4. C.surgical anatomy
5. D.medical anatomy
6. E.radiographic anatomy

2 points  

QUESTION 27

1. The chemical behavior of an atom is determined by:
2. A.the number of protons
3. B.the number of neutrons
4. C.the number of arrangement of electrons
5. D.the size of an atom
6. E.the mass of an atom

2 points  

QUESTION 28

1. Epithelial cells exhibit modifications that adapt them for:
2. A.contraction
3. B.conduction
4. C.secretion
5. D.circulation
6. E.support 

2 points  

QUESTION 29

1. The fibrous components of connective tissue are produced by:
2. A.Fibroblasts
3. B.macrophages
4. C.adipocytes
5. D.mast cells
6. E.melanocytes

2 points  

QUESTION 30

1. Support, protection of soft tissue, mineral storage, and blood formation are functions of which system?
2. A.integumentary
3. B.muscular
4. C.skeletal
5. D.nervous
6. E.none of the above

2 points  

QUESTION 31

1. which of the following is a type of secretion in which some cytoplasm is lost with the product?
2. A.holocrine secretion
3. B.merocrine sectrions
4. C.apocrine secretion
5. D.mucus secretion
6. E.none of above

2 points  

QUESTION 32

1. A Polysaccharide that is formed in the liver and muscle to store glucose is :
2. A.Starch
3. B.cellullose
4. C.glycogen
5. D.sucrose
6. E.fructose

2 points  

QUESTION 33

1. Synthesis of lipids takes place at the:
2. A.ribosomes
3. B.rough endoplasmic reticulum
4. C.smooth endoplasmic reticulum
5. D.golgi apparatus
6. E.mitochondria

2 points  

QUESTION 34

1. Dead skin cells are shed in thick sheets because they are held together by a thin layer of proteoglycan reinformed by intermediate filaments. Such strong intercelluar connetcions are:
2. A.gap juntctions
3. B.intermediate junctions
4. C.tight junctions
5. D.desmosomes
6. E.junctional complexes

2 points  

QUESTION 35

1. Glands which secrete hormones into the blood or tissue fluids are:
2. A.endocrine glands
3. B.mixed glands
4. C.exocrine glands
5. D.merocrine glands
6. E.none of the above

2 points  

QUESTION 36

1. Each of the following is a function of the integumentary system except one. Identify the exception:
2. A.protection of underlying tissue
3. B.excretion
4. C.maintenance of body temperature
5. D.synthesis of Vitamin C
6. E.nutrition and storage

2 points  

QUESTION 37

1. The movement of water across a membrane from an area of low solute concentration to an area of higher solute concentration is known as:
2. A.osmosis
3. B.active transport
4. C.diffusion
5. D.facilitated transport
6. E.filtration

2 points  

QUESTION 38

1. Which of the following cytoskeleton components are responsible for the movement of chromosomes during cell division?
2. A.microfilaments
3. B.intermediate filaments
4. C.thick filaments
5. D.microtubles
6. E.all of above

2 points  

QUESTION 39

1. A type of intercellular connection in which there is a partial fusion of the lipid portions of the two cell membranes is termed a :
2. A.tight junction
3. B.gap junction
4. C.intermediate junction
5. D.desmosome
6. E.none of the above 

2 points  

QUESTION 40

1. Chemical reactions that require an input of energy, such as heat, are said to be:
2. A.Endergonic
3. B.activated
4. C.exergonic
5. D.neutral
6. E.none of the above

2 points  

QUESTION 41

1. The plasma membrane :
2. A.is composed of a bilayer of proteins
3. B.is composed of a bilayer of lipids
4. C.is composed of only carbohydrates and proteins
5. D.is composed of a combination of carbohydrates and proteins
6. E.is a complex combination of carbohydrates and lipids

2 points  

QUESTION 42

1. Mammary glands are a type of :
2. A.sebaceous gland
3. B.apocrine sweat gland
4. C.merocrine sweat gland
5. D.ceruminous gland
6. E.none of the above

2 points  

QUESTION 43

1. Most of the ATP required to power cellular operation is produced in the:
2. A.ribosomes
3. B.endoplasmic reticulum
4. C.nucleus
5. D.mitochondria
6. E.golgi apparatus

2 points  

QUESTION 44

1. Isotopes of an element differ in the number of :
2. A.protons in the nucleus
3. B.electrons in the nucleus 
4. C.neutrons in the nucleus
5. D.electron clouds
6. E.energy levels they contain

2 points  

QUESTION 45

1. If a cell lacked ribosomes, it would not be able to:
2. A.move
3. B.synthesize proteins
4. C.produce dna
5. D.metabolize sugars
6. E.divide

2 points  

QUESTION 46

1. Epithelium is connected to underlying connective tissue by:
2. A.a basement membrane
3. B.interfacial canals
4. C.a basal lamina
5. D.a reticular lamina
6. E.proteoglycan

2 points  

QUESTION 47

1. The components of ribosomes are formed by:
2. A.the endoplasmic reticulum
3. B.golgi complexes
4. C.lysosomes
5. D.mitochondria
6. E.nucleoli

2 points  

QUESTION 48

1. The study of the structure of individual cells is called:
2. A.Cytology
3. B.Histology
4. C.embryology
5. D.physiology
6. E.medical anatomy

2 points  

QUESTION 49

1. Which of the following substances would be least acidic?
2. A.lemon juice, pH=2
3. B.urine, pH=6
4. C.tomato juice, pH=4
5. D.white wine, pH=3
6. E.stomach secretions, pH= 1

2 points  

QUESTION 50

1. The mass number of an atom indicates the number of:
2. A.protons in the nucleus
3. B.neutrons on the nucleus
4. C.electrons in the outer shells
5. D.protons and neutrons in the nucleus
6. E.protons and electrons in an atom

2 points  

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