Chapter 1:Which of the following statements about the image shown below is not an observation?
a. the insect has three legs on the left side
b. the insect has a pattern on its back
c. the insects pattern shows that it is poisonous
d. the insect is green, white and black
Chapter 1: the statement "the worm is 2cm long" is a
Chapter 1: An inference is
a. the same as an observation
b. a logical interpretation of an observation
c. a statement involving numbers
d. a way to avoid bias
Chapter 1: ___________ ___________ means living things can arise from nonliving matter.
Chapter 1: which of the following statements about controlled experiment is true.
a. all the variables must be kept the same
b. only one variable is tested at a time
c. scientists always use controlled experiments
Chapter 1: ________ _________ is a well tested explanation that unifies a broad range of observations
Chapter 1: The process in which cells from two different parents unite to produce the first cell of a new organism is called __________ ______________.
Chapter 1: the process by which organisms keep their internal conditions relatively stable is called _____________.
Chapter 1: an instrument that produces images by focusing light rays is called a ________ ____________.
Chapter 2: Two or more different atoms are combined in definite proportions in any _____________.
Chapter 2: When you shake sugar and sand together in a test tube, you cause them to form a ___________.
Chapter 2: In polymerization complex molecules are formed by the joining together of ____________.
Chapter 2: What does this represent?
H H O
] [ 
H --- N ----C----C-----OH
Chapter 2: In a chemical reaction, a reactant binds to an enzyme at a region known as the ___________.
Chapter 3: Groups of different species that live together in a defined area make up a ____________.
Chapter 3: __________ are organisms that use energy they take in from the environment to covert inorganic molecules into complex organic molecules
Chapter 3: The series of steps in which a large fish eats a small fish that has eaten algae is a ______ ______.
Chapter 3:The total mass of living tissue at each trophic level can be show in _________ __________.
Chapter 3: Nutrients move through an ecosystem in _________________ __________.
change nitrogen gas into ammonia
Chapter 3: In the nitrogen cycle, bacteria that live on the roots of plants do what?
Chapter 3: Which biogeochemical cycle does NOT involve a stage where the chemical enters the atmosphere? A. water cycle B. Carbon Cycle C. Nitrogen cycle D. Phosphorus cycle
Chapter 3: When an ecosystem is limited by a single nutrient that either is scarce or cycles very slowly, this substance is called __________ __________.
Chapter 4: the average year after year conditions of temperature and precipitation within a particular region are its ________.
Chapter 4: A relationship in which one organism is helped and another organism is neither helped nor hurt is called ___________.
Chapter 4: A type of symbiosis in which one organism benefits and the other is harmed is called __________.
Chapter 4: In a tropical rain forest, the dense covering formed by the leafy tops of tall trees is called the _________.
Chapter 7: In many cells, the structure that controls the cell's activities is the ________.
Chapter 7: Despite differences in size and shape, all cells have cytoplasm and a _____________.
Chapter 7: If a cell of an organism contains a nucleus, the organism is a(an) ___________.
Chapter 7: Distinct threadlike structures containing genetic information are called __________.
Chapter 7: Which organelle converts the chemical energy in food into a form that cells can use?
Chapter 7: The movement of water molecules across a selectively permeable membrane known as _______.
away from the area of where it is most concentrated
Chapter 7: A substance that moves across a cell membrane without using the cell's energy tends to move ____________________________________________________________________.
Chapter 8: One of the principle chemical compounds, that living things use to store energy is _____.
Chapter 8: Which Scientist concluded that most of a growing plant's mass comes from water?
A)Priestley, B)Van Helmont, C)Ingenhousz, D)Calvin
water and carbon dioxide
Chapter 8: In addition to light and chlorophyll, photosynthesis requires what?
Chapter 8: The first processin the light-dependent reactions of photosynthesis is _______ ____________.
Chapter 8: Which substance from the light-dependent reactions of photosynthesis is a source of energy for the Calvin Cycle?--A)ADP, B)NADPH, C)H2O, D)pyruvic acid
Chapter 8: The light-independent reactions of photosynthesis are also known as the ________ ______.
Chapter 9: in cells, the energy available in food is used to make an energy-rich compound called ______.
Chapter 9: the first step in releasing the energy of glucose in the cell is known as __________.
Chapter 9: the process that releases energy from food in the presence of oxygen is __________ ___________.
Chapter 9:Which organism perform cellular respiration?
mushroom leaf polar bear flower
a. only a and c b. all of the above
Chapter 9: because fermantation takes place in the absence of oxygen, it is said to be __________.
convert ADP to ATP
Chapter 9: the electron transport chain uses the high-energy electrons from the Krebs cycle to ________ ____ ___ ____.
Chapter 9: a total of 36 molecules of ATP are produced from 1 molecule of glucose as a result of ___________ ___________.
Chapter 9: during heavy exercise, the buildup of lactic acid in muscle cells results in __________ ______.
Chapter 10: the rate at which materials enter and leave through the cell membrane depends on the cells __________ ______.
Chapter 10: sisters chromatids are attached to each other at an area called the ___________.
Chapter 10: if a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?
Chapter 10: The phase of mitosis during which chromosomes become visible and the centrioles seperate from one another is __________.
Chapter 10: know the illustration the best represents metaphase of mitosis. (type in metaphase)
Chapter 10: the timing of the cell cycle in eukaryotic cells is believed to be controlled by a group of closely related proteins known as _________.
Chapter 10: in the cell cycle, external regulators direct cells to
a. speed up or slow down the cell cycle
b. remain unchanged
c. proceed and then stop the cell cycle
Chapter 11: If a homzygous tall pea plant and a homzygous short plant are crossed
a. the recessive trait seems to disappear
b. the offspring are of medium height
c. no hybrids are produced
Chapter 11: a punnet square is used to determine the
a. probable outcome of a cross
b. actual outcome of a cross
c. result of mitosis
Chapter 11: Organisms that have two identical alleles for a particular trait are said to be ____________.
Chapter 11: a situation in which a gene has more than two alleles is known as ____________ ________.
Chapter 11: Unlike mitosis, meiosis in male mammals results in the formation of
a. one haploid cell
b. three diploid polar bodies
c. four haploid gamete cells
Chapter 11: to maintain the chromosomes number of an organism, the gametes must
a. become diploid
b. become recessive
c. be produced by meiosis
Chapter 11: A gene map shows
a. the number of possible alleles for a gene
b. the relative locations of genes on a chromosome
c. where chromosomes are in a cell
Chapter 12: the process by which one strain of bacteria is apparently changed into another strain is called ______________.
Chapter 12: The main enzyme involved in linking individual nucleotides into DNA molecules is ______ ____________.
Chapter 12: The process by which the genetic code of DNA is copied into a strand of RNA is called _____________.
Chapter 12: Changes in the DNA sequence that affect genetic information are known as ___________.
Chapter 12: An expressed gene is one that
a. functions as a promoter
b. is transcribed into RNA
c. codes for only one amino acid
Chapter 14: A chart that traces the inheritance of a trait in a family is called a _________.
Chapter 14: traits that are caused by the interaction of many genes are said to be __________.
abo blood groups
Chapter 14: an example of a trait that is determined by multiple alleles is ______ _________ ________.
Chapter 14: which parental pair could produce females with colorblindness?
a. homozygous normal vision mother, father with colorblindness
b. mother with colorblindness, normal vision father
c. heterozygous normal vision mother, father with colorblindness
sickle cell disease
Chapter 14: A common genetic disorder characterized by ben and twisted red blood cells is ________ _____ __________.
Chapter 14: which of the following techniques takes advantage of repeated dna sequences that do not code for proteins?
Chapter 14: the process of attempting to cure genetic disorders by placing copies of healthy genes into cells that lack them is known as ______ _________.
Chapter 15: who observed variations in the characteristics of animals and plants on the different islands of the galapagos?
Chapter 15: in addition to observing living organisms, darwin studied the preserved remains of ancient organisms called?
Chapter 15: which of the following ideas proposed by lamarck was later found to be incorrect?
a. acquired characteristics can be inherited
b. all species were descended from other species
c. living things change over time
Chapter 15: which would an animal breeder use to produce cows that give more milk?
Chapter 15: an inherited characteristic that increases an organism's ability to survive and reproduce in its specific environments is called an?
Chapter 15: the concept that each living species has descended with changes from other species over time is referred to as?
a. descent with modification
b. artificial selection
c. theory of acquired characteristics
Chapter 15: Structures that have different mature forms but develop from the same embryonic tissues are ____________ ____________.
Chapter 15: The economist who reasoned that if the human population continued to grow unchecked eventually there would not be enough resources was __________.
Chapter 18: The science that specializes in the classification of organisms is ___________.
Chapter 18: Solely from its name you know that Rhizopus nigricans must be
a. a plant
b. an animal
c. in the genus Rhizopus
Chapter 18: A useful classification system does NOT
a. show relationships
b. reveal evolutionary trends
c. use different scientific names for the same organism
Chapter 18: The largest and most inclusive of Linnaeus's taxonomic categories is the ____________.
Chapter 18: Which of the following shows the evolutionary relationships among a group of organisms?
Chapter 18: A unique trait that is used to construct a cladogram is called a __________ ____________.
Bacteria, Archaea, and Eukarya.
Chapter 18: The three domains are __________, ___________, and __________ (type in 'and')