Which of the following is an example of a beneficial mutation?
a.
a mutation cau...
Biology, 08.11.2019 20:31 juliannxkim
Which of the following is an example of a beneficial mutation?
a.
a mutation causing uncontrolled cell division in human tissue cells
b.
a mutation inhibiting human immunodeficiency virus from entering the host cell
c.
a mutation resulting in partial or complete loss of chlorophyll pigments in plants
d.
a mutation resulting in a squirrel being born without ovaries
Answers: 1
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Which element is used in photosynthesis found in atmosphere and fixed by bacteria?
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With the description of the different cell walls, membranes, and associated proteins set in the students' minds, you now need to introduce them to the idea that the cell wall can also act as a foundation to build things upon. bacterial appendages require a strong foundation that will offer the support needed to move and function in a dynamic world. for example, flagella are long, whiplike protein structures that are used by many gram-positive and gram-negative bacteria for locomotion. in order to function effectively, a flagellum must be firmly anchored to the cell wall. how will you be able to get across the idea that the peptidoglycan cell wall is strong enough to support such a mechanism? with a protein rod that passes through the cell wall and protein rings used to anchor it in the membranes, these basal bodies are the rudimentary biological motors that use atp power to spin the hook and the flagella attached to it. bacterial flagella have a biological motor that spins within the cell wall and is powered by atp. this allows the flagella to spin in a whiplike motion to propel the bacterium.
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Biology, 21.06.2019 22:30
Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into
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