Biology, 24.02.2020 17:42 alexcarrasco5903
Which best describes the characteristics of a river basin?
A. the land drained by a river and its tributaries
B. the land formed when rivers create estuaries and marshes
C. the land at the mouth of a river where water flows into the ocean
D. the land formed as a result of a river flooding
Answers: 1
Biology, 21.06.2019 20:00
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.
Answers: 3
Biology, 22.06.2019 06:00
How can you tell the difference between rough er from smooth er?
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Biology, 22.06.2019 08:20
Which characteristics are typical of a human population in the postindustrial stage?
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Which best describes the characteristics of a river basin?
A. the land drained by a river and...
A. the land drained by a river and...
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