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Which of the following statements about actin is false?
(a) ATP hydrolysis decreases actin filament stability.(b) Actin at the cell cortex helps govern the shape of the plasma membrane.(c) Actin filaments are nucleated at the side of existing actin filaments in lamellipodia.(d) The dynamic instability of actin filaments is important for cell movement.
Ampire females can not have children. Only human females can have half vampire / half human children. Both female and male vampires are venomous. List and describe the five pathogens described in the text that cause food poisoning.
Which of the following is not a requirement of natural selection.
In a cross drosphila involving the x-linked recessive eye mutation white (w) and the autosomally-linked recessive wing mutation curved (c) predict f1 phenotypic results of a cross of true-breeding flies with the phenotypes.
Explain the processes involved in cellular protein synthesis. How would synthesis be affected by intake of an otherwise adequate diet that is very low in glycine or low in tryptophan?
Identify sister taxa, then larger groups that share a common ancestor. Create an phylogenetic tree showing the evolutionary relationships among these ten species.
When Mexican hairless dogs are crosses with normally haired dogs, about half the pups are hairless and half have hair. When, however, two Mexican hairless dogs are mated, about a third of the pups produced have hair, about two thirds are hairless, an..
A person has a tidal volume (TV) of 450 mL and his anatomical dead space (ADS) is 150 mL. His respiratory rate is 10 breaths per minute. What is his alveolar ventilation rate? please show calculation and correct units.
Assume you remove your test cultures from the incubator and notice that one of them- a know fermenter- has a gas bubble in the Durham tube.
How will those hazards impact the population who frequently visit the park and what measures could be put in place to reduce the hazard vulnerability.
Certain restriction enzymes produce cohesive (sticky) ends. this means that they a) make a staggered double-strand cut, leaving the ends with a few nucleotides of single-strand DNA protruding. b)cut in regions of high GC content.
Consider a cold winter day with air temperature of 5C and relative humidity of about 20% (moisture content 0.001g H2O/g dry air). A person waiting at a bus stop inhales at an average rate of 7g dry air/min and exhales air .
Given an amount of sunlight that hits the plants on our planet, and ability of plants for rapid growth and reproduction, how come we are not all hip deep in dead plants.
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