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a) A crate containing 40 bricks is raised by a forklift through a height of 1.3m to place on a truck bed. Determine the potential energy gained by the crate if each brick has a mass of 1.3kg.
b) The crate is then pulled by a hoist a distance of 3.4m across the flat trunk bed in 8 seconds. Determine the work done in moving the crate and the power of the hoist when the coefficient of friction is 0.6.
c) The loaded truck of mass 3800kg travels at 20 m/s on its journey. How much kinetic energy does the truck have at this point?
There is a stable pH and electrical potential difference across the mitochondrial membrane in actively respiring cells. The pH of the cytoplasm is 6.8, the pH of the mitochondrial matrix.
What cell types are derived from myeloid versus lymphoid progenitor cells? Describe the function of each WBC type.
Microtubules and actin filaments are classified as being polarized, intermediate filaments are nonpolarized, and myosin thick filaments are bi-polar.
Suppose that the cell membrane is permeable to water but not to ions, Explain what will happen to the cell in terms of osmosis. If the membrane were permeable to ions,
Both directional and stabilizing selection affect the additive variance in quantitative traits. Given their effects, how much additive genetic variance do we expect to find in traits that affect fitness?
Those cars are fueled and built with oil from Nigeria, Iraq, Louisiana and Alaska, places laid to misuse by unfettered oil extraction. Imagine you have done a gram stain and determined what antibiotic to use to kill the bacterium, if you expose th..
What is the habitat of most of the species of Escherichia? How do some strains of Escherichia become pathogenic? What are 2 diseases that are caused by different strains of Escherichia?
The Voges Proskauer (VP) test detects a specific product of a mixed acid fermentation, which distinguishes the genus Escherichia from Klebsiella and Enterobacter
How is glycolytic flux increased during a bicycle exercise test biochemically in someone who is exercise intolerance?
The F- strain is unable to synthesize these amino acids; therefore, they must be supplied in the growth medium. Utilize the results from replica-plating to reply the questions.
Suppose you are interested in studying dogs as a system for obesity. You crossed a Cocker Spaniel to a Labrador Retriever and interbred the offspring for many generations.
Explain why the phenotype of the cloned mammoth would be similar to the woolly mammoth and not to the elephant egg donor or surrogate elephant mother
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