Term
The sequence AGATCT in the temokate strand of DNA would lead to the production of an mRNA strand with the sequence:
A. TCTAGA
B. AGATCT
C. UCUAGA
D. GAGCTC
E. TCTTCT |
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Definition
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Term
The type of tissue that covers or lines structures is
A. epithelial tissue
B. fibrous tissue
C. adipose tissue
D. contractile tissue
E. skeletal tissue |
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Definition
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Term
Causes of extinction include
A. habitat destruction
B. climate change
C. pollution
D. invasions from foreign species
E. all of the above |
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Definition
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Term
Ecology is the study of
A. taxonomic relationships
B. fossil organisms
C. the development of organisms
D. the worldwide distribution of organisms
E. the interaction of organisms with each other and their environment |
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Definition
| E. the interaction of organisms with each other and their environment |
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Term
Interphase
A. occupies 90% of the total cell cycle
B. is the period during which normal activities of the cell take place
C. sets the stage for cell division because DNA replication is completed during the S phase of interphase
D. All of the Above |
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Definition
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Term
Cells placed in this solution will shrivel
A. isotonic
B. water
C. hypertonic
D. hypotonic
E. metatonic |
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Definition
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Term
Which of the following would not be a good practice in the conservation of an endangered species
A. protected landscapes that may still be utilized in a sustainable fashion
B. Zoos with established captive breeding programs for endangered species
C. introducing exotic species into ecosystems to serve as enhanced food sources
D. Botanical gardens to protect propagate, and reintroduce endangered species
E. a global system of national parks set aside to protect large tracts of land |
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Definition
| C. introducing exotic species into ecosystems to serve as enhanced food sources |
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Term
Binomial nomenclature uses a two part unique name assigned to identify each kind of organism. the two parts of the name are
A. family and phylum
B. genus and family
C. species and class
D. genus and species
E. family and species |
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Definition
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Term
In the structure of DNA, which of the following is a correct base pair
A. adenine-cytosine
B. thymine-guanine
C. cytosine-uracil
D. guanine-uracil
E. adenine thymine |
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Definition
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Term
Alleles are
A. always dominant
B. always recessive
C. always incompletely dominant
D. alternate forms of a gene
E. the same forms of a gene |
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Definition
| D. alternate forms of a gene |
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Term
the simplest organization of matter that exhibits the properties of life is the
A. cell
B. tissue
C. protein
D. nucleic acid
E. organism |
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Definition
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Term
Natural selection acts on individual ________, not on individual genes
A. phenotypes
B. karyotypes
C. genotypes
D. whole chromosomes
E. whole communities |
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Definition
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Term
______ are evidence of plants and animals that existed in the past and have become incorporated into the earths crust
A. blocks
B. bones
C. shells
D. leaves
E. fossils |
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Definition
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Term
an adaptation
A. only occurs as a result of need
B. is not a heritable change
C. may be behavioral, physiological, or morphological
D. is never perpetuated by natural selection
E. will lead to enhanced reproductive success in any given environment |
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Definition
| C. may be behavioral, physiological, or morphological |
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Term
Chromosomes wich are not involved in the determination of sex are called
A. heterosomes
B. nucleosomes
C. eusomes
D. polysomes
E. autosomes |
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Definition
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Term
Homologous structures
A. arise through convergent evolution
B. are superficially similar structures in unrelated organisms
C. are derived from common ancestry
D. are completely unchanged from an ancestral form
E. all of the above |
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Definition
| C. are derived from common ancestry |
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Term
a cell in which the DNA is not bound by a membrane is said to be
A. prokaryotic
B. organoid
C. eukaryotic
D. symbiotic
E. endosymbiotic |
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Definition
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Term
the expected phenotypic ratio in the F2 generation of a dihybrid cross is said to be
A. 9:3:3:1
B. 1:2:2:1
C. 1:3:3:1
D. 27:9:9:1
E. 3:1:3:1 |
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Definition
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Term
an organelle that is used for storage and internal transport, serves as a site for attachment of ribosome's, and make steroids, is the
A. cytoplasm
B. mitochondrion
C. lysosome
D. endoplasmic reticulum
E. centriole |
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Definition
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Term
when chance events influence the frequency of alleles within a population, _______ has occurred
A. preadaptation
B. genetic drift
C. adaptation
D. adaptative radiation
E. genetic radiation |
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Definition
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Term
the organelle that packages and routes synthesized products of a eukaryotic cell is the
A. flagellum
B. ribosome
C. peroxisome
D. nucleus
E. golgi apparatus |
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Definition
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Term
when natural selection favors certain phenotypes in a population, the population is responding to
A. selection pressure
B. peer pressure
C. teleology
D. equilibrium pressure
E. genetic drift |
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Definition
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Term
a DNA nucleotide contains
A. deoxyribose, a nitrogenous base, and a phosphate group
B. ribose, a nitrogenous base, and a phosphate group
C. deixysucrose, a nitrogenous base, and a phosphate group
D. deoxyribose, uricil, and a phosphate group
E. deoxyfructose, nucleic acid and 2 phosphate groups |
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Definition
| A. deoxyribose, a nitrogenous base, and a phosphate group |
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Term
the linear form of RNA that is responsible for carrying a set of genetic instructions into the cytoplasm is
A. mRNA
B. tRNA
C. rRNA
D. dRNA
E. cRNA |
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Definition
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Term
According to CHarles Darwin, organic evolution is "descent with modification" which simply means
A. species change over time
B. characteristics acquired during the lifetime of an individual are passed on to all members of its species
C. the fittest always impose change on the unfit
D. inherited variation decline as reproductive potential is modified
E. when a change occurs in a population, the change is modified before being passed to the next generation |
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Definition
| A. species change over time |
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Term
Pelvic bones in wales are examples of
A. convergent structures
B. analogous structures
C. homologous structures
D. vestigial structures
E. differential structures |
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Definition
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Term
When the Hardy-Weinberg equilibrium is achieved, evolution
A. occurs slowly and at a constant rate
B. occurs rapidly and at a constant rate
C. occurs in busts
D. does not occur
E. alternates between a constant rate and "bursts" but never ceases |
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Definition
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Term
by the year 2050, most human population growth will occur in ______ and result in would population about_______
A. less developed countries; 7 bil
B. less developed countries; 9.3 bil
C. less developed countries; 20.5 bil
D. developed countries; 5.5 bil
E. developed countries; 10.2 bil |
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Definition
| B. less developed countries; 9.3 bil |
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Term
| which of the following is not a main point in Darwin's theory
A. inherited variations exist
B. all organisms have far less reproductive potential than first thought
C. there is a constant struggle for existence
D. adaptive traits will be perpetuated in subsequent generations
E. organisms produce more offspring than resources can support |
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Definition
| B. all organisms have far less reproductive potential than first thought |
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Term
When molecules bind temporarily with a carrier protein in a cell's membrane and moves across the membrane from areas of higher concentration to areas of lower concentration, it is called
A. simple diffusion
B. endocytosis
C. receptor-mediated osmosis
D. active transport
E. facilitated diffusion |
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Definition
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Term
If a person with type AB blood has offspring with a person with type O blood, what blood types are possible in their children
A. A, B and AB only
B. A only
C. B only
D. A and B only
E. A, B, and O only |
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Definition
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Term
these structures have recently been shown to act as signal-receiving "antennae". the signaling appears to be critical for brain functioning and embryonic development
A. vacuoles
B. mitochondria
C. smooth ER
D. cilia
E. rough ER |
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Definition
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Term
the form of transport involved when blood pressure forces water and small dissolved molecules into kidney tubules is
A. osmosis
B. simple diffusion
C. complex diffusion
D. filtration
E. facilitated diffusion |
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Definition
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Term
An error known as _______, which may occur during meiosis, will result in gametes having a lesser or greater number of chromosomes than normal
A. nondisjunction
B. synapsis
C. crossing over
D. inversion
E. karyotyping |
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Definition
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Term
___________ proposed a theory of evolution involving the inheritance of acquired characteristics
A George-Louis Buffon
B. Erasmus Darwin
C. Jean Baptiste Lamarck
D. Alfred Russel Wallace
E. Thomas Malthus |
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Definition
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Term
When cells such as white blood cells of a vertebrate engulf bacteria, the membrane transport mechanism used is
A. receptor-mediated endocytosis
B. active transport
C. passive transport
D. phagocytosis
E. exocytosis |
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Definition
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Term
By the end of meiosis I, cells are
A. diploid
B. haploid
C. identical
D. always heterozygous
E. always polyploid |
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Definition
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Term
in observations of the tortoises on the galapagos islands, darwin concluded that
A. long necked tortoises acquired their long necks by stretching to reach vegetation
B. those tortoises were not related to tortoises on the mainland
C. each island species was derived from a different mainland ancestor
D. where vegetation was sparse, long necked tortoises were favored because they could reach higher to get food
E. short necked tortoises had resulted because of spontaneous generation |
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Definition
| D. where vegetation was sparse, long necked tortoises were favored because they could reach higher to get food |
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Term
for each spermatogonium which undergoes meiosis, _______ functional sperm are produced
A. 2
B. 4
C. 8
D. 16
E. 32 |
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Definition
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Term
An excellent example of directional selection is
A. aposematic coloration
B. mullerian mimicry
C. the change in the frequencies of peppered moth phenotypes that occurred because of the industrial revolution
D. cryptic coloration
E. that limulus has remained relatively unchanged over millions of years |
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Definition
| C. the change in the frequencies of peppered moth phenotypes that occurred because of the industrial revolution |
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Term
what is the estimate of the total number of animal species living today
A. 1 million
B. 4-100 million
C. 4-100 billion
D. 1 trillion |
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Definition
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Term
changes in single nucleotides on DNA are called
A. euploidy
B. polyploidy
C. deleterious mutations
D. autosomal mutations
E. point mutations |
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Definition
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Term
you are asked to carry out a cross between 2 fruit flies. one fly is heterozygous with wild type wings and the other fly has vestigial wings. the offspring you expect from this cross would be
A. all vestigial wings
B. all with wild type wings
C. wild type and vestigial with ratio 3:1
D. wild type and vestigial with ratio 1:1
E. none of the above |
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Definition
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Term
Blood is considered to be _______ tissue
A. epithelial
B. liquid
C. hyaline
D. connective
E. adipose |
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Definition
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Term
a requirement for specialization is that subpopulations
A. continue to interact with each other
B. become reproductively isolated from one another
C. undergo clining
D. never experience mutations
E. exhibit balanced polymorphism |
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Definition
| B. become reproductively isolated from one another |
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Term
A major characteristic that distinguishes meiosis from mitosis is
A. that meiosis proceeds immediately after the S phase of interpahse; there is no G phase
B. the lack of centrioles during meiosis
C.the two replications of FNA during meiosis
D. the reduction of chromosome number during meiosis
E. the absence of cytokinesis in meiosis |
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Definition
| D. the reduction of chromosome number during meiosis |
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Term
the surface to volume ratio of a cell limits
A. the type of organelles present
B. the otganelle/microtubule volume
C. the number of organelles present
D. the plasma membrane/DNA volume
E. the size a cell may reach |
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Definition
| E. the size a cell may reach |
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Term
the synthesis of proteins at the ribosomes, based on the genetic information contained in mRNA, is called
A. promotion
B. transcription
C. termination
D. codon decoding
E. translation |
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Definition
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Term
Which of the following is not an assumption of the HArdy-Weinberg theorem
A. the population size must be large
B. sexual reproduction within the population must be random
C. no migration is occurring in or out of the population
D. mutations are not occurring or mutational equilibrium has been reached
E. natural selection is acting on the population |
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Definition
| E. natural selection is acting on the population |
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