Biology AMP 1 BSC2085 Chapter 1-3 (Quizzes) (PART 2) EXAM1
Which type of subatomic particle is not included in an atom's mass number?
Electrons
Which type of subatomic particle orbits around the nucleus?
Electrons
Which of the following is true of polar covalent molecules?
Electrons are shared unequally between their atoms.
Ionic bonds form between two atoms when __________.
one atom donates an electron to the other atom
Which of the following is true concerning mass number?
Using mass number notation, we can identify the number of protons, electrons, and neutrons.
During chemical bonding, which specific subatomic particles form the bond?
Valence electrons
In blood, which of the following least fits the definition of a solute?
Water
Which of the figures below represent a homogeneous mixture?
A
On the image, indicate which part of the atom is negatively charged?
A (electrons)
Match the following organic molecules to their biochemical building blocks: Proteins
Amino acids
Which of the following is not an example of a reversible reaction in human physiology?
An acid and base forming a salt
Which of the following is a property of matter?
Matter can exist in solid, liquid, or gaseous states.
Match the following: Legs moving the pedals of a bicycle
Mechanical energy
Match the following: Smallest particle of a compound that still retains its properties
Molecule
Which of the following represent a homogeneous mixture where the composition is dissimilar in different areas of the mixture? - Module 2.03-2.04 to look at picture
None of the figures represent a homogeneous mixture where the composition is dissimilar in different areas of the mixture.
Match the following: A bond in which electrons are equally shared
Nonpolar covalent bond
Which of the following incorrectly matches a macromolecule with its building blocks?
Nucleic acids to DNA
What is the most common element in the body?
O
Which of the following is true of concentrations of solutions?
One mole of any substance always contains exactly the same number of solute particles, that is, 6.02 x 1023. This number is called Avogadro's number.
Match the following: A bond in which electrons are shared unequally
Polar covalent bond
Which of the following is not one of the four basic elements that comprise approximately 96% of a human's body weight?
Potassium
Which of the following best defines potential energy?
Potential energy is stored energy, which has the capacity to do work, but is not presently doing so.
An organic compound is analyzed, and it has twice as many hydrogen atoms as oxygen atoms. This compound is most likely a __________.
carbohydrate
What two parts of the atom are always equal in number in a neutral atom?
electrons and protons
An atom has an atomic number of 6 and a mass number of 14. How many neutrons does this atom have?
8
Sodium (Na) has an atomic number of 11. How many electrons does it have in its outer (valence) shell?
1
Helium has an atomic number of 2. How many protons and electrons does it have?
2 protons; 2 electrons
Lithium (Li) has an atomic number of 3, and an atomic mass of 7. How many neutrons does it have?
4
Ninety-six percent of body weight is made up of __________.
4 elements
Which of the following are substances composed of two or more components? - Module 2.03-2.04 Question 19
A, B, and C
Which of the following statements is true concerning the structure of atoms?
An atom loses the unique properties of its element when it is split into its subatomic particles.
Which atom is most likely to participate in an ionic bond?
An atom with 11 electrons
The general statement, "monomers are joined to form polymers," describes which kind of reaction?
Anabolic reaction
Which is true concerning atomic weight?
Atomic weight is the average of the mass numbers of all the isotopes of an element.
Which of the following is true of atoms?
Atoms of any given element will differ from those of all other elements and provide the element its unique physical and chemical properties.
Which of the following represents a heterogeneous mixture where the solute particles do not settle out? - Module 2.03-2.04 Question 21
B
With regards to isotopes, which of the following atomic structures is impossible?
B
On the image, indicate where most of the mass of the atom is.
B (protons) and C (neutrons)
Which of the following is correctly matched?
Blood is a suspension.
Which of the figures shows a heterogeneous mixture with very large solute particles that tend to settle out? - Module 2.03-2.04 Question 20
C
Which form of energy is the most useful form of energy in living systems?
Chemical
Sugars contain all of the following, except __________.
Calcium
Select the major energy fuel for forming adenosine triphosphate (ATP).
Carbohydrates, particularly glucose
Which of the following is (are) found in all carbohydrates, proteins, lipids, and nucleic acids?
Carbon, hydrogen, and oxygen only
Match the following: Electrically charged particle from loss of an electron
Cation
Which of the following is not true of DNA?
DNA carries out the orders for protein synthesis issued by RNA.
Which type of chemical reaction is most commonly associated with digesting food and obtaining energy?
Decomposition reactions
Which kind of chemical reaction occurs when two molecules are connected in the places where hydrogen is removed from one molecule and a hydrogen and oxygen are removed from the other?
Dehydration synthesis
Which of the following does not correctly match the opposing paired reactions in a reversible reaction?
Dehydration synthesis and anabolism
In the chemical reaction sequence below, which molecule would be both a reactant and a product? (Note: Each arrow represents a chemical reaction.) Reacction 1 Reaction 2 Starch → Disaccharides → Monosaccharides
Disaccharides
Which statement concerning elements is true?
Each element is composed of more or less identical particles or building blocks, called atoms.
Match the following: Represented by the flow of charged particles along a conductor or the flow of ions across a membrane
Electrical energy
Which of the following is not a correct statement about ionic bonding?
Electrons are shared between the two atoms.
Disaccharidases hydrolyzing disaccharides is an example of which type of proteins?
Enzyme proteins
Which statement is true?
Every element's atoms differ from those of all other elements and give the element its unique physical and chemical properties.
Which of the following best describes a reversible reaction?
Excess glucose is stored as glycogen, which can later be broken down to glucose to be used for energy.
The chemical equation below is an example of which kind of chemical reaction? HCl + NaOH → NaCl + H2O
Exchange reaction
Which of the following is a valid description of a major contribution of hydrogen bonding in the human body?
Forming the shape of important molecules like proteins
Which of the following is the storage carbohydrate of animal tissues?
Glycogen
Match the following: A type of bond that holds different parts of a single large, molecule together into a three-dimensional structure
Hydrogen bond
Which type of bond exists between water molecules?
Hydrogen bond
Predict what kinds of bonds would form between water molecules?
Hydrogen bonds
Which of the following is untrue concerning hydrogen bonds?
Hydrogen bonds are one of the strongest bonds that bind atoms together.
Translate this chemical equation into descriptive words: HCl + NaOH → NaCl + H2O
Hydrogen chloride plus sodium hydroxide produces sodium chloride plus water.
Which kind of chemical reaction occurs when a molecule is broken in two by inserting parts of a water molecule at their point of attachment?
Hydrolysis reaction
Large numbers of Na+ and Cl- ions associate to form salt (NaCl) crystals. This is an example of which bonding type?
Ionic bond
In which type of chemical bonding are electrons lost or gained by the atoms involved?
Ionic bonding
Which statement is incorrect concerning radioisotopes?
Ionizing radiation damages tissue by directly damaging organic molecules.
Which of the following is true of an isotope?
Isotopes have the same number of protons, but differ in the number of neutrons they contain.
Which of the following statements about kinetic energy is incorrect?
It is a type of stored energy.
Which of the following best characterizes a hydrogen bond?
It is a weak and temporary electrical attraction between two polar molecules.
Which of the following statements concerning molecules and compounds is true?
Just as an atom is the smallest particle of an element that still has the properties of the element, a molecule is the smallest particle of a compound that still has the specific characteristics of the compound.
Fever is a body defense mechanism that speeds healing by increasing enzyme actions that are necessary to overcome a pathogen. However, higher temperature can also have which negative effect?
Just as with acidity, temperature can denature proteins.
Which subatomic particles are equal in atomic mass?
Protons and neutrons
Which statement is true regarding RNA?
RNA carries out genetic instructions for protein synthesis.
Which of the following characteristics is correctly paired with the corresponding nucleic acid type?
RNA: Bases are adenine (A), guanine (G), cytosine (C), uracil (U)
When writing a chemical equation, substances to the left of the arrow are the:
Reactants
Match the following: Eicosanoids
Regulate inflammation
Match the following: Fatty acids with all single bonds between carbon atoms
Saturated
Which of the following is true regarding solutions?
Solutions are homogeneous mixtures of components that may be gases, liquids, or solids.
Which statement is true?
Solutions, colloids, and suspensions are all present within a human being.
Which of the following is a product in the following reaction? glucose + fructose → sucrose + H2O
Sucrose
Which general type of chemical reaction is occurring in the chemical equation below? CO2 + H2O → H2CO3
Synthesis reaction
When athletes abuse anabolic steroids, which type of reactions are they trying to stimulate in their muscles?
Synthesis reactions
Which type of chemical reaction is most commonly used for growth and repair processes?
Synthesis reactions
In a polar molecule, what causes one part of the molecule to take on a slightly negative charge?
That part of the molecule has a greater attraction for the shared electrons.
Which of the following is true concerning atomic number?
The atomic number of any atom is equal to the number of protons in its nucleus.
Which of the following statements about a dipole, or polar molecule, is incorrect?
The dipole molecules are electrically balanced.
Why is it possible for two isotopes of an element to have different atomic mass numbers?
Their number of neutrons can be different.
In the periodic table of the elements, what do all the atoms of elements in each column (or "group") have in common?
They have the same number of outer shell electrons.
Which of the following is incorrect regarding true solutions?
True solutions are usually opaque due to the number of solutes dissolved in the solution.
Which of the following does not represent an accurate hierarchy in the natural combination of matter?
When two or more similar kinds of atoms bind, they form an isotope.
An ionic bond is __________.
a chemical bond between atoms formed by the transfer of one or more electrons from one atom to the other
As Adenosine triphosphate (ATP) is hydrolyzed to provide energy for cellular needs, __________accumulates.
adenosine diphosphate (ADP)
Chemical bonds __________.
are energy relationships between the electrons of the reacting atoms
Prostaglandins are __________.
lipids
The building blocks of carbohydrates are called _________________.
monosaccharides
The main function of DNA is to direct ____________ synthesis.
protein
The important cholesterol-based molecules are __________.
steroids
The outermost energy level of an atom is known as its __________.
valence shell