The mitotic spindles arise from which cell structure?
centromere
centrosome
kinet...
Biology, 09.08.2019 22:20 johncena1001
The mitotic spindles arise from which cell structure?
centromere
centrosome
kinetochore
cleavage furrow
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 08:40
Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of
Answers: 1
Biology, 22.06.2019 09:30
Which statement is a physical property? becomes moldy quicklyeasy to digestconducts electricity poorlydoes not burn
Answers: 1
Biology, 22.06.2019 12:30
Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.
Answers: 1
Mathematics, 12.07.2021 23:30
History, 12.07.2021 23:30
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English, 12.07.2021 23:30
English, 12.07.2021 23:30
Mathematics, 12.07.2021 23:30
Mathematics, 12.07.2021 23:30