A small isolated population found on a remote island is more likely to undergo speciation than a large widespread population because a small isolated population
1.inherently contains much greater genetic diversity
2.is more susceptible to genetic drift
3.is more readily adaptable to extreme environmental changes
4.is more likely to migrate to other islands or the nearest mainland
A tetraploid individual would have
1.four copies of each chromosome
2.two copies of each chromosome
3.one copy of each chromosome
4.four copies of a single chromosome
All of the following are associated with mating behavior EXCEPT
1.aggressive behavior
2.releaser pheromones
3.search image
4.territoriality
Chemical digestion begins in the
1.mouth
2.esophagus
3.stomach
4.gall bladder
Choose the most Darwinian reason to describe how camels came to have flat, broad hooves.
1.The camels that ventured further into the desert acquired broader feet, which were passed along to their offspring
2.Those animals that had the broadest hooves were the most attractive to the opposite sex
3.The animals that had the broadest hooves were able to travel farther and find water more easily than those that could not and subsequently perished
4.In the game of life, random events will move evolution toward the most successful adaptations possible
Choose the one statement that is true from among the following.
1.FSH is produced in the ovaries and causes maturation of the follicle
2.LH is produced in the pituitary gland and causes ovulation
3.Estrogen is produced in the anterior pituitary gland and causes the endometrium to thicken
4.Progesterone is produced in the posterior pituitary gland and causes the endometrium to thicken
Endocrine glands
1.secrete vitamins
2.cease functioning after adolescence
3.begin functioning in adolescence
4.have no ducts
Identify the correct eukaryotic cell cycle.
1.G1 to S to G2 to M to cytokinesis
2.G1 to G2 to M to S to mitosis
3.G1 to G2 to S to M to karyokinesis
4.S to G1 to G2 to M to cytokinesis
If 9 percent of all cicadas exhibit the homozygous recessive condition known as flippant wings, what is the gene frequency for that gene in the general population?
1.cannot be determined
2.91 percent
3.0.9
4.0.3
In a heterozygous monohybrid cross, the dominant trait can be expressed in the phenotype of the F1 ________ of the time.
1.0 percent
2.25 percent
3.33 percent
4.75 percent
In flowering plants, sperm are produced by the
1.ovary
2.anther
3.microsporangium
4.sporophyte
In the development of a frog embryo, Spemans primary organizer was found to be the
1.dorsal ectoderm
2.dorsal lip of the blastopore
3.archenteron
4.neural tube
Lynn Marguliss endosymbiotant theory is supported by the fact(s) that
1.mitochondrial DNA is more like that of bacteria than the nuclear DNA in human cells
2.chloroplasts replicate on their own time schedule, not under nuclear control
3.mitochondria and chloroplasts are about the same size as prokaryotes
4.all of the above
Mimicry always involves a model and a mimic as well as a dupe or signal receiver (the organism the mimic is trying to fool). Which of the following depicts Batesian mimicry?
1.a walking stick (a herbivore) sitting on a branch of a tree
2.a rat snake (nonpoisonous) that looks like a poisonous species
3.an oppossum playing possum
4.a spider that looks like an ant
Monocotyledons and dicotyledons are the two subdivisions of flowering plants. Monocotyledons are distinguished from dicotyledons because monocots possess
1.floral structures in multiples of fours and fives
2.long taproots and parallel venation in their leaves
3.netted leaf venation and floral structures in multiples of three
4.parallel leaf venation and fibrous roots
Neurotransmitters cross the synapse after being released from the
1.dendrites
2.axons
3.cell bodies
4.all of the above
Neurotransmitters have as their effectors cells such as
1.nerves
2.muscles
3.glands
4.all of the above
People who suffer from meningitis are having an inflammation around their
1.coronary arteries
2.pleural cavities
3.membranes of the spinal cord
4.kidneys
Photosynthesis is
1.Light driven
2.photo driven
3.anabolic
4.all of the above
The age of the Earth is about __________ years, and life has existed on the Earth for __________ years.
1.3.5 billion, 2.5 billion
2.3.5 billion, 1.5 billion
3.15 billion, 3.5 billion
4.4.5 billion, 3.5 billion
The number of individuals in a population that the environment can just maintain with no net increase or decrease from generation to generation is known as
1.the dispersion pattern
2.the habitat cap
3.the exponential growth curve
4.the carrying capacity
The organ system that functions in exchanging gases with the environment is known as the
1.digestive system
2.respiratory system
3.circulatory system
4.endocrine system
The role of oxygen in aerobic respiration is
1.to couple with C to form CO2 in chemiosmosis
2.to form ATP
3.to contribute H+ to the Krebs cycle
4.to accept electrons from the Electron Support Chain
The wings of a bird and those of an insect are a good example of
1.adaptive radiation
2.coevolution
3.convergent evolution
4.all of the above
Tissue that lines the outer and inner surfaces of the body in protective sheets of tightly packed cells is known as
1.nervous tissue
2.adipose tissue
3.connective tissue
4.epithelial tissue
Two organisms that occupy many of the same niches are most likely
1.competitors
2.predator-prey
3.host-parasite
4.mutualistic partners
Two snails in the same class must also be in the same
1.genus
2.order
3.area
4.phylum
Which is the correct sequence of events during embryonic development?
1.cleavage-differentiation-fertilization-gastrulation
2.fertilization-differentiation-cleavage-gastrulation
3.differentiation-fertilization-gastrulation-cleavage
4.fertilization-cleavage-gastrulation-differentiation
Which of the following best describes the relationship between a population and a species?
1.A species is one type of population
2.A species is a local subset of a population
3.A population is a group of organisms occupying a specific area
4.The terms population and species are interchangeable
Which of the following biomes is characterized by the driest conditions?
1.tundra
2.taiga
3.temperate deciduous forest
4.grasslands
Which of the following biomes is correctly paired with its description?
1.tundra coniferous trees in a cold, dry climate
2.taiga cold areas with low, mat-like vegetation
3.tropical deciduous forests-the biome with the most precipitation
4.savanna-grassland with three distinct climates, based mainly on rain
Which of the following could be used to study evolution?
1.DNA hybridization
2.RFLPs
3.structural homologies
4.all of the above
Which of the following is a product of cyclic photophosphorylation?
1.carbon dioxide
2.oxygen
3.ATP
4.NAD+
Which of the following is an instinct?
1.habituation
2.caring for offspring
3.operant conditioning
4.associative behavior
Which of the following is not a type of plant stem?
1.node
2.corn
3.rhizome
4.tendril
Which of the following is NOT involved in the synthesis of proteins?
1.rough ER
2.smooth ER
3.Golgi body
4.ribosomes
Which of the following is the specialized absorptive structure in the intestine?
1.alveoli
2.villi
3.Bowmans capsule
4.salivary glands
Which of the following is true about the blood?
1.Arteries carry oxygen-rich blood
2.Arteries carry oxygen-poor blood
3.Veins carry oxygen-rich blood
4.None of the above is true
Which of the following organisms in the food chain has the largest biomass?
1.plants
2.grasshopper
3.mouse
4.owl
Which of the following organisms lacks a coelom?
1.roundworms
2.segmented worms
3.clams
4.grasshoppers
Which of the following pairs of figures would you need to know to determine the population density of elk living in Rocky Mountain National Park?
1.the number of elk living in the park and the area of land encompassed by the park
2.the birth rate of the elk population and whether population growth is logistic or exponential
3.the birth rate of the elk population and the area of land encompassed by the park
4.the number of elk living in the park and the dispersion pattern of the elk population
Which of the following produces ATP during aerobic respiration?
1.chloroplast
2.nucleus
3.ER
4.mitochondrion
Which of the following represents the correct order of eras, from most ancient to most recent, along the geological time scale?
1.paleozoic-precambrian-mesozoic-cenozoic
2.precambrian-paleozoic-mesozoic-cenozoic
3.precambrian-mesozoic-paleozoic-cenozoic
4.cenozoic-mesozoic-paleozoic-precambrian
Which of the following stages of the cell cycle occurs immediately prior to mitosis?
1.G1
2.G2
3.S
4.M
Which of the following statements is NOT part of Darwins theory of natural selection?
1.Individuals that are best adapted to their environment tend to pass on heritable advantageous characteristics to their offspring
2.Genetic variation exists among individuals in a population
3.The size of most populations remains relatively constant, despite the fact that more offspring are produced than are needed to maintain it
4.Early settlers saved seed only from the most productive crop plants to plant the following year
Which of the following statements is true concerning plants that utilize C4 photosynthesis?
1.They only open their stomates at night
2.They use bundle sheath cells to separate the Calvin cycle from the atmosphere
3.They use rubisco (ribulose bisphosphate carboxylase oxygenase) to capture carbon dioxide from the atmosphere
4.They use lenticels exclusively for gaseous exchange in order to conserve water
Which of the following tissues contains the highest number of mitochondria?
1.nervous
2.skin
3.connective
4.muscle
Which of the following would be the result of a true dihybrid cross?
1.AABB
2.AABb
3.AaBb
4.AaBB
Which one of the following lists contains an organism that does NOT belong in that phylum?
1.jellyfish, coral, anemone, starfish
2.tunicates, birds, sharks, man
3.bats, dogs, cats, sloths
4.liver fluke, planaria, tapeworm, flatworms