EOC Review App Question Preview (ID: 63116)
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Which of the following shows and example of mutualism?
a) A humming bird pollinating a long-necked flower...the bee gets nectar, the flower gets pollinated
b) mistletoe growing on a tree -the mistletoe takes food and water from the tree, the tree is harmed
c) leeches feeding on fish, the fish are harmed
d) round worms in the belly of a dog. The round worms steal nutrients from the dog
Favorable traits that help individuals survive, find a mate and reproduce will...
a) Increase their fitness, and the trait will appear more in the population overtime
b) Decrease their fitness, and the trait will appear more in the population overtime
c) Decrease their fitness, and the trait will appear less in the population overtime
d) all of the choices
Which of the following best describe gene flow?
a) Organisms best adapted to survive in an environment will, and will be capable of reproducing
b) This is when a new species is made as a result of reproductive isolation
c) A new member with different traits enters an environment and adds it's alleles into the gene pool of the population
d) Gene flow is the frequency of a particular allele in a population
Modern horses developed their traits through natural selection. What occurs during the process of natural selection?
a) Organisms choose mates from other species.
b) Breeders cross organisms with desirable traits.
c) Only the fittest organisms survive and reproduce.
d) Organisms remain exactly the same over many generations.
DNA contains genes that provide instructions for inherited traits. What is the relationship between the genes and chromosomes?
a) Genes are segments of DNA that are located on the chromosomes of each cell.
b) Genes are made up of thousands of chromosomes.
c) Genes correspond to the phenotype, while chromosomes correspond to the genotype.
d) Chromosomes correspond to the phenotype, while genes correspond to the genotype.
Some viruses attack cells by attaching to their outer covering, entering, and taking over their genetic “machinery.” Viruses are able to invade cells after first attaching to their
a) nuclear membrane
b) cell membrane
c) genetic machinery
d) viral proteins
In viruses, the lytic cycle is
a) quick, meaning symptoms show in a few days
b) slow, meaning symptoms show in a few months
c) when the virus leaves the cell
d) very slow, when the symptoms don't show
Proteins/traits are coded for by....
a) the sequence of nitrogen bases in DNA
b) the sequence of sugars in DNA
c) the sequence of phosphates in DNA
d) the number of nitrogen bases in DNA
Which of the following is an example of a prokaryote
a) algae
b) animal
c) bacteria
d) virus
The capsid of the virus is the
a) protective outer coat
b) cell membrane
c) nucleus
d) cell membrane complex
Which condition allows an ecosystem to undergo secondary succession instead of primary succession?
a) The presence of soil
b) The presence of bare rock
c) The presences of nutrients in the ground water
d) The presences of animals
In ecological succession, biodiversity _______________ overtime until a climax community is reached.
a) Increases
b) Decreases
c) Remains the same
d) unable to determine
Human organ systems work together in many ways. Which statement accurately explains the relationship between two body systems?
a) The excretory system regulates the temperature of the integumentary system.
b) The skeletal system deliver nutrients absorbed by the endocrine system.
c) The digestive system deliver oxygen absorbed by the respiratory system.
d) The nervous system regulates the movement of the muscular system.
A parent who is heterozygous for brown eyes marries a homozygous recessive person with blue eyes. What percentage of their children will have blue eyes? (hint: make a Punnett Square!)
a) 50%
b) 25%
c) 75%
d) 100%
Which describes transcription?
a) DNA to mRNA, A pairs with U, C pairs with G
b) mRNA to amino acid, use a codon chart
c) both are correct
d) none of the choices
A student analyzed a specimen with no nucleus and no membrane bound organelles. The circular DNA was free-floating in the cytoplasm. What organism was this?
a) Eukaryote
b) Prokaryote
c) Virus
d) All of the choices
In a food chain of: grass - grasshopper - mouse - hawk, the grass has 34,000 KJ of energy. How much energy would the hawk have?
a) 34
b) 100
c) 3400
d) 340
When a gene is transcribed and translated, a protein will be made. Different cells have different genes that are regulated, such as a skin vs a nerve cell. How are genes regulated, leading to protein production?
a) The genes are all turned on simultaneously
b) The genes are all activated in all cells
c) The genes are all turned off in all cells
d) Certain genes are turned on and off in certain cell types
A green beetle is able to camouflage better in a rainforest than a bright red beetle. What would happen overtime?
a) The green beetle has better fitness, overtime there will be a higher frequency of green beetles in the population
b) The green beetle has better fitness, overtime there will be a lower frequency of green beetles in the population
c) The green beetle has a worse fitness, overtime there will be a lower frequency of green beetles in the population
d) All of the choices are correct
A barnacle attaches itself to a whale. The barnacle gets a free ride, but the whale is unaffected. What symbiotic relationship is this?
a) Mutualism
b) Parasitism
c) Commensalism
d) Predator/Prey
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