In which case the myosin head is firmly attached to the actin filament?

a. Presence of ATP

b. Absence of ATP

c. Presence of Ca2+

d. Absence of Ca2+

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#Question id: 18680

#Unit 13. Methods in Biology

DNA from Salmonella species, when digested with the restriction enzyme Xba I, gives around 15 fragments ranging from 25 kb to 680 kb This pattern of fragments, or ‘fingerprint’, is unique to that strain. If the same fingerprint is found from bacteria from other infected people, then it can be assumed that they were all infected from a common source. Thus, by comparing their eating habits, food sources, etc. the source of the infection can be traced to a restaurant, food item. The fingerprints are created and analysed by

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#Question id: 28832

#Unit 2. Cellular Organization

Most microtubules in a cell consist of a simple tube, a singlet microtubule, built from____

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#Question id: 5019

#Unit 11. Evolution and Behavior

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the

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#Question id: 10443

#Unit 6. System Physiology – Plant

What signalling is mediated by photolyase domain of cryptochrome?

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#Question id: 15846

#Unit 8. Inheritance Biology

You have isolated two temperature-sensitive mutations in phage l that you suspect may be in the same gene. These phage mutants are called ts-1 and ts-2. Each mutant will form plaques at 35˚C but not at 42˚C. You cross ts-1 to ts-2 phage by coinfecting E. coli at the permissive temperature of 35˚C. When the resulting phage lysate is plated at 35˚C you count 10,000 plaques per ml of phage lysate, but when the same phage lysate is plated at 42˚C, there are only 80 plaques per ml. the relative order is sm→ts-2→ts-1, find out the distances you can calculate in m.u.?