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Q1. If substance is less concentrated outside a cell than inside the cell in which direction is that substance probable to diffuse across the cell membrane?
Q2. A clinical microbiologist makes serial dilutions of several antimicrobials in broth, and then incubates each drug dilution series with a standard amount of a patient's isolated pathogen. What is this micro biologist setting up?
Q3. In birds, sex is determined by a ZW chromosome scheme that is much like the typical XY scheme seen in humans and many other organisms, except that the system is reversed: Males are ZZ (similar to XX in humans) and females are ZW (like to XY in humans). A lethal recessive allele that causes death of the embryo occurs on the Z chromosome in pigeons. What will be the sex ratio in offspring of a cross between a male heterozygous for the lethal allele and a normal female?
Unattached earlobes are a dominant trait. If A denotes the allele for unattached earlobes, and denotes the allele for attached earlobes, what is (are) possible genotype(s) of a person who has unattached earlobes.
Environmental Carcinogens mutagens and other environmental carcinogens UV light organic solvents high energy radiation asbestos tobacco smoke others factors? What does UV light do to a cell.
Another dog, Billy, has three restriction sites for this enzyme in his genome. For this problem suppose there is only one chromosome in dogs.
ATP-synthase is a large membrane-integral protein complex that produces ATP from ADP and inorganic phosphate. Describe the location of this complex in the cell; list its major parts and the subunits each part is made of. Describe how it is able to co..
If the centrioles are mispositioned in the cell, the functional mitotic spindle would fail to form. In this state, how will chromosome segregation be affected . Microtubules will not attach to kinetochores.
Horn Sporophytes are horn-shaped. Horn Possess Gemmae. Can undergo sexual reproduction. Mosses what is the synapomorphy of hornworts, mosses and vascular plants? Stomata Pores that allow the uptake of CO2 and release of O2, do not close like other st..
In a cross between a purple flowered plant and a white flowered plant, all 73 of the offspring had purple flowers. What are the most probable genotypes of the parent plants.
Approximately half of our vitamin K is synthesized by bacteria in the colon. Based on this information, why might taking a broad spectrum antibiotic produce frequent nosebleeds.
Biological recognition is significant in many processes explain how the process of recognition occurs while an organism recognizes other members of their own species.
Angel is a biologist studying Lake Ecosystem in which leaf-eating insects are consumed by fish, which are consumed by snakes, which are consumed by hawks. In this case, how would you categorize a fish.
Explain how one of these main concepts is connected to your own personal observations. Clearly describe two methodological problems associated with the way Scientists study the topic.
While walking throughout a forest you notice that someone has carved his or her initials into the bark of a tree. The initials are exactly 1.5 meters from the ground. How far from grounds will the initials be next year and the year after that? Why? E..
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