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2nd semester Bio exam multiple choice questions (hanks)

Terms in this set (100)

chp. 9 meiosis) the diploid number of a chromosome in a human skin cell is 46 how many chromosomes are in a human egg cell?
23
chp. 9 meiosis) how many chromosomes are in e body cells of an organsim that has a haploid number of 8?
16
chp. 9 meiosis) when cross pver takes place, chromosomes
exchange corresponding segments of DNA
chp. 9 meiosis) unlike mitosis, meiosis results in the formation of
haploid cells
chp. 9 meiosis) gametes are produced by the process of
meosis
chp. 9 meiosis) meiosis goes through.....cells divisions
2
chp. 9 meiosis) the fusion of an egg cell and a sperm cell is called
fertilization
chp. 9 meiosis) homologous chromosomes contain.....inherited characteristics
the same
chp. 9 meiosis) unlike mitosis, meiosis usually results in the formations of
four genetically different cells
chp. 9 meiosis) DNA is duplicated in
interphase
chp. 9 meiosis) sister chromatids are
duplicate halved of chromosomes
chp. 9 meiosis) a student can study a karyotype to learn about the
number of chromosomes present in a body cell
chp. 9 meiosis) a diploid cell is one that
has chromosomes found in pairs
is designated by the symbol 2n
has two homologous of each chromosomes
chp. 9 meiosis) separation of homologuos chromosomes occur during
meiosis 1
chp. 9 meiosis) the difference between anaphase and mitosis and anaphase 1 of meiosis is that
chromatids do not separate at the centromere in anaphase 1
chp. 9 meiosis) the exchange of segments of DNA between the members of a pair of chromosomes
acts as a source of variations within a species
chp. 9 meiosis) the number of viable gametes resulting from a female are
1
chp 9 mitosis) which event occurs during interphase
the cell carries out metabolic processes
chp 9 mitosis) during which phase of mitosis do the chromosomes line up in the middle of the dividing cell?
metaphase
chp 9 mitosis) one difference between cytokenesis in the plant cells and in animal cells is that plant cells have
a cell plate
chp 9 mitosis) what is a malignant tumor?
a mass of cancer cells
chp 9 mitosis) when during the cell cycle is s cell's DNA replicated
interphase
chp 9 mitosis) the cell cycle is the
a series if events that cells go through from "birth" through cell division
chp 9 mitosis) the first phase of mitosis is
prophase
chp 9 mitosis) cancer is a disease on which some cells lose the ability to control their
rate of division
chp 9 mitosis) during mitosis, sister chromatids are pulled apart
two times
chp 9 mitosis) before the first step of mitosis chromosomes...
make exact copies of themselves
chp 9 mitosis) you grow mainly because your cells
divide
chp 9 mitosis) body cells are produced by
mitosis
chp 9 mitosis) true or false: after mitosis, each new cell has the same number of chromosome as the original cell
true
chp 10 Mendel) the farther part apart twp genes arenlocated on a chromosome, the
less likely they are to be inherited together
chp 10 Mendel) a cross of a blaxk chicken (BB) with a white chicken (bb) produces all blue offspring (Bb). this type of inheritance is known as.
incomplete inheritance
chp 10 Mendel) variation in human skin color is a result of
polygenetic inheritance
chp 10 Mendel) if two genes ar in the same chromosome and rarely assort independently,
the genes are probably located close to each other
chp 10 Mendel) human hair turning lighter when exposed to the sun is an example of
environmental effects
chp 10 Mendel) how many alleles for sex linked (X linked) gene does a male carry?
one
chp 10 Mendel) blood type is an example of
multiple alles
chp 10 Mendel) skin color, which has a wide range of phenotypes, is an example of
polygenic inheritance
chp 10 Mendel) a cross of a black chicken (BB) with a white chicken (WW$ produces all speckled offspring (BBWW). this tyoe if inheritance is known as
codominance
chp 10 Mendel) what supports rhe claim that the environment can affect genetic traits
hydrangea flower varies with soil Ph.
chp 10 Mendel) the arctic fox is blue-gray in the summer and white in the winter. what most likely influences the change?
genes and the environment
chp 10 generics) Gregor mendel concluded that traits are
not inherited by offspring
chp 10 generics) in the P generation, a tall plant plant was crossed with a short plant. No f1 plants were short. short plants reappeared in the F2 generation because
the allele for shortness and allele for tallness, segregated when the f1 plants produced gametes
chp 10 generics) what principle states that during gamete formation genes for different traits separate without influenceing each other's inheritance
principle if independent assortment
chp 10 generics) when gregor mendel crossed a true breeding short pant, the f1 plants inherited
an allele from only the tall plant
chp 10 generics) in the p genaration, a true breeding tall plant (dominant) was crossed with a true breeding short plant. if alleles did not segregate during gamete formation
all of the f2 plants would be tall
chp 10 generics) a man and a women are both heterozyguous for normal skin pigmentation (Aa) produce an albino offspring (aa). which of mendel's principles explains why the offspring is albino
dominance and segregation
chp 10 generics) offsrping that results from crosses between true breeding parents with different traits.
all called hybrids
chp 10 generics) when gregor mendel crossed true breeding purple flowered plants with true breeding white flowered plants, all of the offspring were purple because,
the allele for purple flowers plants is dominant
chp 10 generics) if a pea plant has a recessive allele for green peas, it will produce
green peas if it does not also has dominant allele for yellow peas
chp 10 generics) organisms that have two identical alleles for a particular trait are said to be
homozygous
chp 10 generics) a punnwt square shows
possible results of generic cross
the possible genotypes for the offspring
the alleles of the gametes of each parent
chp 10 generics) gregor mendel removed the male parts (stamens) from the flowers of some plants in order to
prevent self pollinization
chp 10 generics) in the p generation a true breeding tall plant (dominant) is a crossed true breeding short plant (recessive). the probability that an f2 plant would be tall
75%
chp 11 DNA) the primary function if DNA is to
store and transmit genetic information
chp 11 DNA) DNA replication results in two DNA molecules
each one with one new strand and one original strand
chp 11 DNA) the base pairing rules state that the following are base pairs in DNA
adenine with thymine, guanine with cytosine
chp 11 DNA) molecules of DNA are composed of long chains of
nucleotides
chp 11 DNA) the scientist credited with establishing the structure of DNA are
watson and crick
chp 11 DNA) what did griffith observe when he injected a mixture of heat killed and lice harmless bacteria into mice
the micr died
chp 11 DNA) hersey and chase studied a bacteriophage which is a
virus infecting bacteria
chp 11 DNA) the replication if DNA molecule....copies of the same molecule
two
chp 11 DNA) each organism has a unique combination of characteristics encoded in molecules of
DNA
chp 11 DNA) what is part of a DNA molecule
nitrogenous base, deoxyribose, phosphate
chp 11 DNA) genes contain instructions for assembling
...
13
...
chp 11 DNA) swatson and crick build models that demonstrated that
DNA is made of two chains in a double helix
chp 11 DNA) DNA is copied during a process called
replication
chp 11 DNA) the part of the molecule for which deoxyribonucleic acid is named is the
sugar
chp 11 DNA) avery's experiments showed that bacteria are transformed by
DNA
chp 11 DNA) if both radioactive phosphorus and radioactive sulfur were found in the bacteria in their experiment...
...
chp 11 DNA) because of base pairing in DNA, the percentage of
pyromidines in DNA is about equal to the percentage of purines
chp 11 DNA) what scientist made x ray diffraxtion photos of DNA
...
translation and transcription) genes contain instructions for assembling
proteins
translation and transcription) from which molecules are mRNA molecules transcribes
DNA
translation and transcription) which type of RNA functions as a blueprint for protein synthesis
mRNA
translation and transcription) a promoter is a
binding site for RNA polymerase
translation and transcription) found in both DNA and RNA
phosphate groups, guanine, and cytosine
translation and transcription) in eukaryotes
transcription takes place in the nucleus, and translation takes place in the cyroplasm
translation and transcription) the correct sequence if transfer of information in most organisms
DNA to RNA to protein
translation and transcription)why is it possible for an amino acid to be specified by more than one kind of codon?
there are 64 different kinds if codons but only 12 amino acids
translation and transcription) unlike DNA, RNA contains uracil
...
translation and transcription) which type if RNA brings the information in the genetic code from the nucleus to other parts of the cell
mRNA
translation and transcription) what is a nucleotide found in DNA?
deoxyribose+phosphate group+uracil
translation and transcription) what happens to the process of translation
the cell uses information from messenger RNA to produce proteins
translation and transcription) how many codons are needed to specify three amino acids?
3
chp evolution) on the galapagos islands charles darwin observed
somewhat similare species to those mainland, with traits that suited there particular environments
chp evolution) charles made many observations in
south america
chp evolution) darwins theory of evolution is based on the idea os
use and disuse
chp evolution) when a farmer breeds only his or her best licestock, the process involved is
artificial selection
chp evolution) biological fitness us the ability of the individual to
...
chp evolution) sickle cell anemia is favored in
african tropics
chp evolution) organisms have the same combination of bones but have different functions
homologous ...
taxonomy) the three domain system recognizes fundament differences between two groups of
prokaryotes
taxonomy) organisms that are not closely related look similar because of
convergent evolution
taxonomy) a genus is composed of a number of related
species
taxonomy) what does a cladistic analysis show about organisms?
the order in which derived characters evolved
one goal of scientists is to assign every organism a universally accepted same according to the system known as
binomial nomenclature
taxonomy) according to the rules of binomial nomenclature, which of the terms is capitalized?
neither the genus nor species name
taxonomy) traditional classifications tended to take into account primarily
visible similarities and differences
Verified questions
vocabulary
Complete the following sentences by choosing the word that best fits the context, based on information you infer from the use of the italicized word. Some word pairs will be antonyms, some will be synonyms, and some will simply be words often used in the same context. Unwilling to be fooled by the demagogue's patriotic speeches any longer, hordes of angry citizens created a[n] _____ of the ruler and burned it in the palace courtyard. A. journeyman, B. dilemma, C. culmination, D. effigy, E. intern.
Verified answer
spanish
¿Qué letra viene después de la 'b'?
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spanish
Pregunta a estas personas. ¿Qué pedirían si les concedieran un deseo? Escribe sus respuestas. Yo ___________.
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question
Some of the following sentences are unclear because they lack parallel structure. Revise each faulty sentence by putting parallel ideas into the same grammatical form. Add, delete, move, and replace words and punctuation as necessary. If a sentence is already in parallel form, write C for *correct*. Born in 1909, Nkrumah's educational influences included studying in the United States and that he was interested in Pan-Africanism.
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