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Chemistry LibreTexts

Semester Final

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    184436
  • cc_profilecc.exam.v0p1qmd_assessmenttypeExaminationqmd_scoretypePercentagecc_maxattempts1
    cc_profilecc.true_false.v0p1<u>Heterozygous</u> individuals have two of the same alleles for a particular gene. TrueFalse2100cc_profilecc.true_false.v0p1A <u>species</u> is generally defined as a group of natural populations that can interbreed. TrueFalse3100cc_profilecc.true_false.v0p1Successful survival and reproduction are indicators of evolutionary <u>fitness</u>. TrueFalse5100cc_profilecc.true_false.v0p1<u>Individuals</u> can evolve. TrueFalse8100cc_profilecc.true_false.v0p1According to Darwin, <u>individuals</u> with traits better suited to their environment are more likely to survive. TrueFalse9100cc_profilecc.true_false.v0p1<u>Heterozygous</u> individuals have two of the same alleles for a particular gene. TrueFalse12100cc_profilecc.true_false.v0p1A <u>dominant</u> allele masks the effect of a recessive allele. TrueFalse13100cc_profilecc.true_false.v0p1Garden peas are <u>difficult</u> to grow because they mature <u>slowly</u>. TrueFalse16100cc_profilecc.true_false.v0p1Offspring formed by <u>asexual</u> reproduction look exactly like their parent. TrueFalse17100cc_profilecc.multiple_choice.v0p1Scientists use observations and data to form and testconstants.hypotheses.theories.conclusions.20100cc_profilecc.multiple_choice.v0p1Organisms rely on both negative feedback processes and behavior to maintainhomeostasis.adaptations.ecosystems.evolution.23100cc_profilecc.multiple_choice.v0p1What is the name given for genetic changes in living things over time?adaptationhomeostasisevolutionnegative feedback29100cc_profilecc.multiple_choice.v0p1The smallest basic unit of matter is themolecule.atom.compound.cell.32100cc_profilecc.multiple_choice.v0p1The four main types of carbon-based molecules in organisms are carbohydrates, lipids, nucleic acids, andstarches.fatty acids.monosaccharides.proteins.38100cc_profilecc.multiple_choice.v0p1What is unique about carbon?bonding propertiesability to bond with oxygenproperties as a reactantproperties as an enzyme39100cc_profilecc.multiple_choice.v0p1Which organelle is the storehouse for most of a cell's genetic information?mitochondrionchloroplastcentriolenucleus46100cc_profilecc.multiple_choice.v0p1Which organelles are unique to plant cells?ribosomesvacuoleschloroplastscentrosomes49100cc_profilecc.multiple_choice.v0p1Which features are found in plant cells but not in animal cells?mitochondria and ribosomesvesicles and vacuolescell walls and chloroplastscentrioles and centrosomes53100cc_profilecc.multiple_choice.v0p1Which of the following phrases best describes active transport?moves substance against concentration gradientdoes not use chemical energyforms a vesicle around a large particlerelies on diffusion of materials55100cc_profilecc.multiple_choice.v0p1The aerobic stages of cellular respiration take place in thecell membrane.mitochondria.cytoplasm.grana.60100cc_profilecc.multiple_choice.v0p1The part of cellular respiration that needs oxygen takes place inside thenucleus.mitochondria.thylakoid.cytoplasm.64100cc_profilecc.multiple_choice.v0p1Which process is best represented by the following chemical equation?<br>sugars + oxygen <img width="15" height="15" align="bottom" alt="mc018-1.jpg" src="$IMS-CC-FILEBASE$../resources/mc018-1_57310d1632a71.jpg" border="0"> carbon dioxide + watercellular respirationphotosynthesisglycolysisfermentation67100cc_profilecc.multiple_choice.v0p1Normal human males develop from fertilized eggs containing which of the following sex chromosome combinations?XYXXXOOO71100cc_profilecc.multiple_choice.v0p1How many chromosomes are in the body cells of an organism that has a haploid number of 8?48121678100cc_profilecc.multiple_choice.v0p1diploid : somatic cell :: haploid :body cellchromosomegametezygote81100cc_profilecc.multiple_choice.v0p1If a characteristic is sex-linked, the gene for it is found ona sex chromosome.an autosome.a linked chromosome.an allele.83100cc_profilecc.multiple_choice.v0p1The phenotype of an organismis used to represent its genetic composition.is the physical appearance of a trait.occurs only in dominant individuals.cannot be seen.88100cc_profilecc.multiple_choice.v0p1Evolution can be defined as a genetic change inspecies.environmental variation.chromosomal drift.natural selection.91100cc_profilecc.multiple_choice.v0p1Natural selection is the process by whichchange occurs in the genetic characteristics of individuals that live together in an environment from one generation to another.organisms with traits well-suited to their environment reproduce at a greater rate than less well-adapted organisms in the same environment.use and disuse of a characteristic leads to evolutionary change.baseball players pass on the trait for strong arm muscles to children.96100cc_profilecc.multiple_choice.v0p1Evidence that supports the theory of evolution includes all of the following <i>except</i>punctuated sedimentation.similarities and differences in amino-acid and DNA sequences between organisms.the fossil record.homologous structures.99100cc_profilecc.multiple_choice.v0p1homozygous : heterozygous ::heterozygous : <i>Bb</i>probability : predicting chances<i>BB</i> : <i>Bb</i>factor : gene105100cc_profilecc.multiple_choice.v0p1<p>In a population, natural selection acts on</p>heritable differencesgenetic mutationshomologous structuresanalogous structures107100cc_profilecc.multiple_choice.v0p1Herbivores are which of the following?producerssecondary consumersprimary consumersdecomposers113100cc_profilecc.multiple_choice.v0p1Which phrase best describes biodiversity?the number of individuals in an ecosystemthe amount of biomass in an ecosystemthe amount of available energy in an ecosystemthe number of species in an ecosystem118100cc_profilecc.multiple_choice.v0p1Which of the following provide most of the energy in ecosystems?keystone speciescarnivoresgeneralistsproducers122100cc_profilecc.multiple_choice.v0p1An organism that has an unusually large effect on an ecosystem is called a(n)keystone species.omnivore.biotic factor.heterotroph.123100cc_profilecc.multiple_choice.v0p1Which of these is an example of parasitism?A lion defends its territory.A squirrel stores food in a tree hole.A leech feeds on a host's blood.A polar bear kills and eats a seal.129100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>Explain how an individual’s genotype and phenotype are related.</p>100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>The DNA molecule is described as a double helix. Describe the meaning of this expression and the general structure of a DNA molecule.</p>100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>From the point of view of natural selection, why do individuals tend to produce more offspring than an environment can support?</p>100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>What does it mean to say that natural selection does not act directly on genes, but is limited to acting upon phenotypes?</p>100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>How do food webs show the flow of energy?</p>100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>Explain how a change in the habitat of a species might affect the entire ecosystem.</p>100