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The flashcards below were created by user
rjc146
on FreezingBlue Flashcards.
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The instructions for growth and development are in _______.
DNA
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A mutation is a change in ________.
Hereditary instruction
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The ability to acquire, store, transfer, or utilize energy is called ________.
metabolism
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The ability to maintain a constant internal environment is _________.
homeostasis
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Which is the smallest unit of life?
a cell
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Which of the following is defined as “all of the various species living in the same area”?
community
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Organisms that are producers obtain their energy from ______.
the sun
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The genus portion of a scientific name when printed _________.
always capitalized, always italicized
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A scientific name consists of ___________________.
genus name and species name
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A scientific principle is a(n) _____________.
synthesis of several explanations of many observations
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Of the following, which is called an “educated guess”?
hypothesis
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In a scientific experiment, conditions that could affect the outcome of the experiment, but do not because they are held constant, are called _________.
controlled variables
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In order to arrive at a solution to a problem, a scientist usually proposes and tests __________.
hypotheses
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An experimenter will not do which of the following?
manipulates dependent variables
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The control in an experiment
allows a standard of comparison for the experimental group
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Science is based on ________.
evidence
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A process that is found only in plants and some bacteria is __________.
photosynthesis
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Most organisms exhibit this characteristic when trying to maintain constant environments.
homeostasis
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The capacity to acquire, store, and use energy is known as __________.
metabolism
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The process in which one generation replaces another is __________.
reproduction
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Today, scientists usually agree that there are _____ kingdoms.
six
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Corn belongs to which of the following kingdoms?
Kingdom Plantae
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Molds and mildew belong to __________.
Kingdom Fungi
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Four of the five answers listed below are necessary characteristics to the life of an individual. Select the exception:
- metabolism
- homeostasis
- development
- heredity
- Diversity*
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Four of the five answers listed below are parts of the scientific method. Select the exception:
- observation
- hypothesis
- experimentation
- Philosophy*
- conclusion
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Four of the five answers listed below are taxonomic categories. Select the exception:
- family
- Kind*
- species
- order
- genus
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Four of the five listed below are characteristics of life. Select the exception:
- Ionization*
- metabolism
- reproduction
- growth
- cellular organization
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Four of the five answers listed below are names of kingdoms. Select the exception:
- Animalia
- Protista
- Bacteria*
- Fungi
- Plantae
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The nucleic acid core of a virus may be composed of ______________________.
DNA or RNA
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Tissues are composed of _______.
cells
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A ____________ obtains carbon and energy from the remains, products or wastes of organisms.
decomposer
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Viruses have a _______ and a _____________.
DNA or RNA core; protein coat
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Which of the following are a group of viruses that infect bacterial cells?
Bacteriophages
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Viruses are pathogenic.
True
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The lytic cycle of viral multiplication is a longer cycle than the lysogenic cycle.
False
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If a form of a trait improves chances for surviving and reproducing in a given environment, it is a(n) ________ trait.
adaptive
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The capacity to evolve is based on variations in heritable traits, which originally arise through ______.
mutations
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Which of the following is the most inclusive?
- ecosystem
- Biosphere*
- community
- population
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Animals are all _______.
- eukaryotic
- consumers
- multicelled
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The compound most associated with energy transfer in living organisms is _______.
ATP
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A community and its physical and chemical environment constitute _______________.
an ecosystem
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The Archaebacteria and Eubacteria are _________.
prokaryotic
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Inductive logic (reasoning) is a pattern of thinking by which an individual derives a general statement from specific observations.
True
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Organs are composed of tissues, which are composed of cells. This is an example for which characteristic of life?
Living things are organized.
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Which sequence is correct in regards to the different levels of biological organization?
cells-tissues-organs-organ system-organism
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The genus name for human beings is ____________.
Homo
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Which classification category will have the most different types of animals?
- species
- genus
- family
- Kingdom*
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Which sequence of classification categories is in the proper order?
species, genus, family, order, class, phylum, kingdom
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Which of the following is made up of a combination of the others?
- atoms*
- electrons
- protons
- neutrons
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The negative subatomic particle is the...
electron
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The positive subatomic particle is the...
proton
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The atomic number refers to the...
number of protons in an atom
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The atomic mass of an atom is determined by the number of...
neutrons and protons
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Magnesium has an atomic number of 12 and an atomic mass number of 24. How many electrons are its third energy shell?
2
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How many protons are in an atom of Magnesium?
12
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How many neutrons are in an atom of Magnesium?
12
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What is the maximum number of electrons that can be found in the first shell of an atom?
2
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Sodium has eleven protons. How many electrons does it have in its outermost shell?
1
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Isotopes are...
atoms of the same element that differ in the number of neutrons
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A molecule is...
a combination of two or more atoms
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A compound is...
a chemical combination of atoms whose proportions do not vary
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The chemical symbol for Iodine is...
I
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The chemical symbol for Potassium is...
K
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The chemical symbol for Magnesium is...
Mg
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Which of the following is true of an ion?
It may be positive or negative
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A sharing of electrons between atoms results in which of the following bonds?
Covalent
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A bond formed due to the gain and loss of electrons between atoms is an...
ionic bond
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Which of the following bonds is most easily broken?
Hydrogen bond
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Temperature is...
the amount of heat given off by an object
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Water's capacity to resist rupturing due to the presence of hydrogen bonding is termed...
Cohesion
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Polar substances that dissolve in water are said to be...
hydrophilic
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Water is a...
polar molecule
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Substances with a pH between 0 and 7 are...
acidic
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Substances with a pH between 7 and 14 are...
basic
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pH...
refers to the hydrogen ion concentration of a substance in solution
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Cellular pH is kept near a value of 7 because of...
buffer systems
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How do hydrophobic molecules react with water?
repelled by it
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Characteristics of water:
- stabilizes temperature
- good solvent
- cohesion
- surface tension
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An intermingling of two or more element in proportions that can vary...
mixture
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Any molecule or ion that dissolves in some solvent...
solute
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A splendid tracer used in many research techniques and as cancer destroying therapy...
radioisotope
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A fundamental form of matter that can not be broken down into something different by ordinary means...
element
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pH of Milk of magnesia...
10
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pH of Stomach (gastric) fluid...
1
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The bond between the atoms of table salt...
ionic
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The bond type holding several molecules of water together...
hydrogen
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The bond formed between an oxygen atom and two hydrogen atoms in a molecule of water in which electrons are shared unequally...
polar covalent
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They bond between the hydrogen atoms of hydrogen gas in which electrons are shared equally...
non-polar covalent
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A ____ is a unit of matter, which occupies the atomic nucleus and has a mass but no electrical charge.
neutron
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A Chlorine atom has ____ electrons in its outermost shell.
7
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Water-loving substances are termed _____ while water-fearing substances are termed hydrophobic.
hydrophilic
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A solution with a pH of 10 is ____ times as basic as one with a pH of 8.
20
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