Biology, 02.07.2020 14:01 erinolson07cats
Identify all of the true
statements:
A concentration gradient is the difference between
two concentrations
Active transport allows cells to transport molecules
against a concentration gradient
Diffusion results in a net overall movement from a low
concentration to a high concentration
In diffusion particles are moving around randomly in
all directions
Osmosis requires energy from respiration to be carried
out
Partially permeable membranes allow any molecules
to pass through them
Answers: 2
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 01:30
Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve
Answers: 1
Biology, 22.06.2019 02:50
The response is the basis for vaccination. primary secondary tertiary none of the above
Answers: 2
Identify all of the true
statements:
A concentration gradient is the difference between<...
A concentration gradient is the difference between<...
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