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C190 Introduction to Biology Pre-Assessment WGU
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WGU - C190
68 terms Minelli8500Preview WGU C Teacher lisa Which two characteristics are found in organism C?Choose two answers.Jaw and Lungs
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Where is the ancestor of wolves and gorillas, but not frogs, depicted on this cladogram?Point E
Which organism has neither bones nor a jaw?Lamprey
Which two organisms have eggs with shells?Birds ; Crocodilians
Which organisms have four limbs and produce amniotic eggs without shells?Rodents and rabbits; Primates
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Which species on the following cladogram has the most similar DNA sequence to species E?D
Largemouth bass have recently been introduced into ponds that previously did not contain any large, predatory fish. Which adaptation would help the existing population of small, prey species of fish avoid predation from the largemouth bass?Faster average swim speed
Western spadefoot toads breed and deposit their fertilized eggs in small, often short-lived ponds. The tadpoles grow in the ponds for a period of time before undergoing a metamorphosis into an adult frog. One unusual characteristic of spadefoot tadpoles is the ability to change body form during development. Normally most tadpoles are herbivorous and feed on plant material. However, when conditions in the ponds suggest they are beginning to dry up (e.g., an increase in water temperature or concentration of organic waste), a small percentage of individuals in the population undergo a dramatic change in body form and habit and begin to eat their competitors. This ability is considered to be advantageous as it both reduces the number of competitors in the pond and speeds up the rate of development of the transformed tadpoles.If global climate change continues (as predicted) to increase the average temperature of habitats around the world, how would populations of spadefoot toads likely evolve in response to an increase in pond temperatures?Spadefoot toads would likely evolve to have a higher percentage of toads become carnivorous.
Male peacocks compete with one another to mate female peacocks. Males with more colorful tail feathers attract female mates at a higher rate than those without.Therefore, male peacocks have colorful tail feathers, whereas female peacocks do not. What is this an example of?Sexual selection
A gardener maintains a species of rose that produce either yellow flowers (the dominant phenotype) or white flowers (the recessive phenotype). One day, the gardener observes that a cross between two yellow rose bushes has led to a single rose bush with orange flowers.What evolutionary mechanism is involved in the change in the gene pool of this species?Mutation
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Which item would be classified as biotic?Fungus
Which item is an atom?Nitrogen
Which of these is an output of the light-dependent reaction of photosynthesis?
ATP
Which molecule is an input to the Calvin-Benson cycle? Carbon dioxide
Which stage of cellular respiration releases carbon dioxide as a product?Krebs cycle
Which stage of cellular respiration releases the most energy and, therefore, produces the most ATP molecules?Electron transport chain
In the human body, muscle fibers metabolize sugars to produce energy. Fast-twitch muscle fibers, like those used during short-term, vigorous exercise, carry out an anaerobic process that produces less energy per sugar molecule processed.Which metabolic process do fast- twitch muscle fibers carry out?Fermentation
Fermentation uses sugar in the absence of which molecule?O2
A subatomic particle has a negative charge and is found in a shell of the atom.What is this particle?An electron
What is the charge of a proton?+1
A molecular bond results from an electron being transferred from one atom to another.Which type of bond holds these atoms together?Ionic
Which situation describes covalent bonding?An atom shares an electron with another atom.
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After a rainy day, a leaf has small droplets of water on its surface. Which property of water is this an example of?Cohesion
A plastic water bottle is filled with water and placed in the freezer. The next day the frozen water has expanded, causing the plastic bottle to rupture.Which characteristic of water is this an example of?Density
A biological polymer consists of 358 amino acids linked together covalently.What is this polymer?A protein
A molecule consists of a chain of glucose monomers linked together.What is the function of this molecule within the cell?To store energy
Which substance is found in ATP?Nitrogenous base
During the Calvin cycle, a sugar molecule is formed as ATP is converted into ADP and a free phosphate group.What is happening to energy in this second step of photosynthesis?Energy is being released from ATP to power the conversion of a sugar molecule.
How is DNA structured during the metaphase stage of mitosis?The centromere at the center keeps DNA lined up at the cell's equator.
What is true regarding the transition from metaphase to anaphase during mitosis?Sister chromatids are aligned along the center of the cell and then pulled apart into separate chromatids.
Which stage of mitosis is depicted?Prophase
Sister chromatids are being separated and moving towards opposite poles of the cell. Which stage of mitosis is this?Anaphase
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