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Mycoplasmas are the smallest living cells. They are spherical and have a diameter of about 0.33 μm (radius of mycoplasmas = 0.165 μm)a.
(a)Glucose is the major energy source of mycoplasma cells. Its concentration within such cells is 0.1 mM. Calculate the number of glucose molecules within a single cell.
(b) The first enzyme required for glucose metabolism is hexokinase. Its molecular mass is 100,000. Given that the intracellular fluid of micoplasma cells contains 10 g of hexokinase per liter, calculate the molar concentration of hexokinase.
Mimulus lewisii and Mimulus cardinalis are two plants that occupy the same habitat but do not interbreed in nature. Though, they can be readily crossed in the laboratory to produce fertile offspring. Which is a likely reason that prevents interbreedi..
Do you really think the age of the man is main in determining the chance of chromosomal abnormalities? Why or why not with appropriate reasons. Describe a single meiosis event.
A patient lost a lot of blood during surgery and his blood pressure dropped from 120/80 to 90/50. Describe how the kidneys respond to this change in blood pressure.
How does this neurotoxin affect the nervous system's ability to stimulate skeletal muscle contraction? How does it affect the capability of skeletal muscle fibers to respond to stimulation.
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.W hat phenotypes would be seen in the f2 and in what proportion.
Cartenoids are frequently found in foods that are considered to have antioxident properties in human nutrition. What related function do they have in plants.
What effect might this have on cell lineages during development. Describe the physical changes that would occur in SIM medium if you inoculated an organism that was negative for hydrogen sulfide but positive for indole production and motility.
In the humans, the gene for albinism is recessive to gene for normal skin pigmentation. If two heterozygous persons have children, state the probability they will have a child who is an albino?
About 5 percent of individuals with Down syndrome have a chromosomal translocation in which a third copy of chromosome 21 is attached to chromosome 14. If this translocation occurred in a parent's gonad, how can it lead to Down syndrome in a child.
After contact with a patient's spinal fluid, a lab technician developed fever, nausea, and purple lesions on her neck and extremities. A throat culture grew gram-negative diplococci. What is the genus of bacteria.
Dynein is missing from cilia and flagella of the individual with a specific inherited disorder. These individuals have severe respiratory problems, and if males, are sterile. What is the structural relationship between these 2 symptoms.
Select an organism which consists of a population having two distinct traits. You can be creative here (red and green beetles, humans with red hair and brown hair, birds with short beaks and long beaks and so on).
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