Anatomy 232 Test 1

Select the statement about mixtures that is correct. a. A solution contains solvent in large amounts and solute in smaller quantities b. Solutions contain particles that settle out in time c. Colloids are homogeneous mixtures d. Suspensions are homogeneous mixtures of two or more components

a. a solution contains solvent in large amounts and solute in smaller quantities

Which of the following describes the operation or function of the heart and blood vessels? a. Cardiovascular physiology b. Systemic anatomy c. Cardiovascular anatomy d. Renal physiology

a. cardiovascular physiology

Select the statement that is correct regarding chemical bonds a. Covalent bond involves the sharing of electrons forming a chemical bond b. Multiple bonds are not possible with covalent bonding c. Covalent bonding involves the transfer of one or more electrons from one atom to another d. Ionic bonds involve the sharing of electrons between two atoms

a. covalent bond involves the sharing of electrons forming a chemical bond

Salts are: a. Inorganic, ionic compounds b. Single covalent compounds c. Double covalent compounds d. Hydrogen bonded

a. inorganic, ionic compounds

Select the correct statement about isotopes. a. Isotopes of the same element have the same atomic number but differ in their atomic masses b. All the isotopes of an element have the same number of neutrons but differing numbers of electrons c. Isotopes occur only in the heavier elements d. All the isotopes of an element are radioactive

a. isotopes of the same element have the same atomic number but differ in their atomic masses

If an atom of an element has an atomic number of 74 it would have which of the following? a. 37 protons and 37 neutrons b. 74 protons c. 37 electrons d. 37 protons and 37 electrons

b. 74 protons

What is a chain of more than 50 amino acids called: a. A nucleic acid b. A protein c. A dipeptide d. A polysaccharide

b. a protein

A reaction that involves the forming of chemical bond with the loss of a molecule of water is called a ______ reaction. a. Decomposition b. Dehydration synthesis c. Vaporization d. hydrolysis

b. dehydration synthesis

Which of the following is not considered a factor influencing rates of chemical reactions? a. Particle size b. Gravity c. Temperature d. concentration

b. gravity

Which property of water is demonstrated when we sweat? a. High heat capacity b. High heat of vaporization c. Cushioning d. reactivity

b. high heat of vaporization

The ability to maintain a relatively stable internal environment is called _____? a. Positive feedback b. Homeostasis c. Metabolism d. Homeostatic imbalance

b. homeostasis

A structure that is composed of two or more tissue types that work together to perform specific functions for the body is a(n) ______. a. Complex cell b. Organ c. Organ system d. Complex tissue

b. organ

An example of a negative feedback mechanism would be: a. Regulation of blood clotting b. Regulation of blood glucose levels c. A disease caused by homeostatic imbalance d. Enhancing labor contractions

b. regulation of blood glucose levels

A base is a compound which: a. Removes OH- from solution b. Removes or accepts protons c. Releases or donates protons d. Lowers the pH of a solution

b. removes or accepts protons

The coiling of the primary structure of a protein into an alpha helix or beta pleated sheet is referred to as: a. Primary structure b. Secondary structure c. Tertiary structure d. Quaternary structure

b. secondary structure

Cholesterol is an example of a(n): a. Eicosanoid b. Steroid c. Phospholipid d. Neutral fat

b. steroid

Physiology is: a. The study of the structure of body parts and their relationship to one another b. The study of the operation or function of structures or systems c. The study of internal structures as they related to the skin surface d. The study of developmental changes of the body before birth

b. the study of the operation or function of structures or systems

Which of the following would not be part of an RNA nucleotide? a. Guanine b. Thymine c. Uracil d. cytosine

b. thymine

A phospholipid is composed of: a. 3 fatty acid, glycerol and phosphorus-containing group b. 3 fatty acid and glycerol c. 2 fatty acids, glycerol and a phosphorus-containing group d. 2 fatty acids and glycerol

c. 2 fatty acids, glycerol and a phosphorus-containing group

If an atom of an element has 14 protons, 10 neutrons and 14 electrons, what is its mass number? a. 10 b. 14 c. 24 d. 28

c. 24

Place the following in correct sequence from simplest to most complex: a. 1-2-3-4-5 b. 2-1-3-4-5 c. 3-1-5-4-2 d. 3-2-4-1-5

c. 3-1-5-4-2

Which of the following is a neutralization reaction? a. HCL → H+ + Cl- b. NaOH → Na+ OH- c. HCl + NaOH → NaCl + H2O d. NH3 + H+ → NH4+2

c. HCl + NaOH → NaCl + H2O

Fibrous proteins: a. Are compact spherical molecules that exhibit tertiary and Quaternary structure b. Are also called functional proteins c. Are also called structural proteins d. Include examples such as antibodies and enzymes

c. are also called structural proteins

Buffers are systems that: a. Always donate protons and lower the pH b. Release hydroxyl ions into solutions in response to rising pH c. Bind protons when the pH drops and release protons when the pH rises d. From H2O and a salt, neutralizing the solution

c. bind protons when the pH drops and release protons when the pH rises

Which of the following is not an important characteristic of water? a. Cushioning b. heat of vaporization c. Buffering pH d. reactivity

c. buffering pH

The four elements that make up about 96% of body mass are: a. carbon , oxygen, phosphorus, calcium b. Nitrogen, hydrogen, calcium, sodium c. Carbon, oxygen, hydrogen, nitrogen d. Sodium, potassium, hydrogen, oxygen

c. carbon, oxygen, hydrogen, nitrogen

Lactose is a ____. a. Monosaccharide b. Polysaccharide c. Disaccharide d. Diglyceride

c. disaccharide

Atoms with 1 or 2 valence shell electrons (e.g. Na and K) are ____. a. Electronegative b. Electroneutral c. Electropositive d. Inert (non-reactive)

c. electropositive

The organ system that is composed of glands that secrete hormones that regulate body functions is the _____? a. Lymphatic system b. Integumentary system c. Endocrine system d. Urinary system

c. endocrine system

The study of large body structures visible to the naked eye is called _____ anatomy. a. Microscopic b. Developmental c. Gross d. systemic

c. gross

Which of the following is true regarding the concentration of solutions? a. Percent solutions are parts solvent per 100 parts total b. molarity is the number of moles per 100 moles total c. molarity is the number of moles of solute per liter of solution d. One mole of an element is equal to its atomic number

c. molarity is the number of moles of solute per liter of solution

A control mechanism in which the output of system shuts off the effect of the original stimulus is a : a. Homeostatic feedback b. Positive feedback system c. Negative feedback system d. Neutral feedback system

c. negative feedback system

Coenzymes are: a. Two holoenzymes that work together b. Metal ions c. Organic cofactors d. Components of apoenzymes

c. organic cofactors

One of the necessary life functions is responsiveness or irritability. This refers to: a. The nervous system causing all living things to sometimes experience anger b. The necessity for all organisms to reproduce c. Sensing changes in the environment and then reacting or responding to them d. Indigestible food residues stimulating the excretory system

c. sensing changes in the environment and then reacting or responding to them

The atomic weight of an element is equal to: a. The mass of the protons and neutrons in the nucleus b. The weight of the protons in an atom of an element c. The average of the mass number of all isotopes of an element d. The weight of one atom of one isotope of an element

c. the average of the mass number of all isotopes of an element

Which of the following is not true of proteins? a. They have both functional and structural roles in the body b. They may be denatured by heat or acidity c. They appear to be the molecular carriers of coded hereditary information d. Their functions depend on their three-dimensional shape

c. they appear to be the molecular carriers of coded hereditary information

Which of the following would not be a necessary life function a. Movement b. Responsiveness c. Water d. Maintaining boundaries

c. water

Which of the following is an organic molecule? a. H2O b. Na2SO4 c. NaOH d. C6H12O6

d. C6H12O6

Which of the following is true of hydrogen bonds. a. H bonds involve the transfer of an electron to an electropositive atom b. H bonds form between two electronegative atoms on different molecules c. H bonds are strong bonds formed by the sharing of electrons between atoms forming a bond d. H bonds can also form intramolecular bonds

d. H bonds can also form intramolecular bonds

Glucose, sucrose and glycogen are all three examples of: a. Monosaccharides b. Disaccharides c. Polysaccharides d. Carbohydrates

d. carbohydrates

Which of the following does NOT describe enzymes? a. Holoenzymes consist of an apoenzyme and a cofactor b. Enzymes are globular proteins that act as biological catalysts c. Enzymes are chemically specific d. Enzymes raise activation energy to facilitate reactions

d. enzymes raise activation energy to facilitate reactions

Which of the following statements is correct of homeostatic imbalance? a. The internal environment is becoming more stable b. Feedback mechanisms maintain equilibrium c. Negative feedback mechanisms take over d. It is considered the cause of most disease

d. it is considered the cause of most disease

The structural unit of nucleic acids is the _____? a. Peptide b. Gylceride c. Saccharide d. nucleotide

d. nucleotide

In an oxidation-reduction reaction, the reactant that loses electrons is said to have been: a. Electronized b. anionized c. reduced d. oxidized

d. oxidized

Which of the following is true of energy flow in chemical reactions? a. Exergonic reactions involve the input of energy into the reactions b. The reactants in endergonic reactions contain more potential energy than the product c. Endergonic reactions involve the release of energy from the reaction d. The products of endergonic reactions contain more potential energy than the reactants

d. the products of endergonic reactions contain more potential energy than the reactants