BioSemExam Part 4 Question Preview (ID: 34469)


Test 4.

How is information from the field of embryology used as evidence for evolution?
a) It shows that organisms from the same species have similar DNA
b) It shows that organisms from different species have similar DNA
c) It shows that organisms from different species have similar developmental patterns
d) It shows that organisms from the same species have similar developmental patterns

According to natural selection, which of the following results would be considered a beneficial mutation to an organism?
a) resistance to a virus
b) formation of cancer cells
c) inability to undergo sexual reproduction
d) stopping the production of an essential protein

Which must be in place within a population in order for the theory of evolution to hold true?
a) changes in allele frequencies in random generations
b) changes in allele frequencies in successive generations
c) changes in chromosomal frequencies in random generations
d) changes in chromosomal frequencies in successive generations

An example of genetic variation in an organism is -
a) Fruit without seeds
b) Albinism
c) Presence of dimples
d) All of the above

What questions did both Lamarck and Darwin try to answer with their theories of evolution?
a) What is the role of DNA in the inheritance of traits?
b) What causes populations of organisms to change over time?
c) What are the patterns of heredity in sexually reproducing organisms?
d) What happens to beneficial traits when populations undergo natural selection?

Which idea about evolution was held by Darwin but NOT by Lamarck?
a) Species are fixed and do no change
b) Species are moving toward perfection
c) Organisms best suited to their environment survive and reproduce
d) The use or disuse of an organ determines its appearance in a species

Which illustrates Lamarck's explantation of evolution?
a) A female peacock has brightly colored feathers, therefore attracting a mate more easily
b) A population of humans develops a darker skin tone after moving to a sunnier and warmer environment
c) A species of fish develop fins that allow it to swim faster after a bigger, predatory fish is introduced into its environment
d) A blacksmith, when working, strengthens muscles in his arms, and so, his sons will have similar muscular dev.when they mature

A cell nucleus sends out molecules that carry instructions to protein synthesis. What is the destination of these molecules?
a) enzymes
b) ribosomes
c) cytoskeleton
d) cell membrane

In which set is a biotic factor paired with an abiotic factor?
a) producers and sunlight
b) decomposers and plants
c) herbivores and carnivores
d) temperature and humidity

A mutation is considered helpful when-
a) It decreases the chances of survival
b) it increases the chances of survival
c) it provides no harm to the organism
d) it changes the genetic makeup of the organism

Which action is an application of the work of Watson and Crick?
a) blood typing
b) DNA fingerprinting
c) arthroscopic surgery
d) magnetic resonance imaging

What type of mutation occurs when a nucleotide base is replaced with a chemically similar nucleotide base and, therefore, there are no recognizable effects upon the organism?
a) neutral mutation
b) harmful mutation
c) structural mutation
d) beneficial mutation

What type of mutation is it when a nitrogen base is added?
a) Deletion
b) Frameshift
c) Insertion
d) Inversion

When a mutation results in an allele that is recessive-
a) An individual who is homozygous for the trait will not express the mutation
b) An individual who is heterozygous for the trait will express the mutation
c) The mutation will never be expressed
d) The mutation will be expressed only in individuals who are homozygous for the recessive trait

The process by which individuals in a population that are best adapted to the environment pass their traits to their offspring is-
a) Overproduction
b) Speciation
c) Natural selection
d) Variation

Which of the following statements is true?
a) Evolution can occur in one generation over many years
b) Evolution can only occur through thousands or million of generations in a population
c) Evolution can be seen in one organism in one lifetime
d) All of the above

The evolution of beak sizes in Galapagos finches is a response to
a) How finches use their beaks for the food or seeds available
b) The finches using their beak more, the beak changing, then passing the trait on
c) Whether the populations interbreed
d) The nutritional content of the seeds grew smaller birds

Which describes a change of alleles in a population over time?
a) relative frequency
b) biological evolution
c) incomplete dominance
d) independent assortment

Which is part of the process of radioactive dating for determining the age of fossils?
a) using the carbon 14 isotope
b) studying stratified bands of rocks
c) observing the biozones of different species
d) studying the different types of inclusions found in rock formations

Relative dating of fossils is different from radioactive dating of fossils because relative dating
a) requires the use of modern technology
b) can provide a rough estimation of the age of a fossil
c) measures changes in fossils according to decaying isotopes
d) requires observing the location in which the fossil was found

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