Look at the diagram of a cross-section of a cell membrane below. The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
A. simple osmosis
B. active transport
C. simple diffusion
D. facilitated diffusion
Ans: D. facilitated diffusion
Biology & Microbiology
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A. Centromeres B. 3' end of telomeres C. Origins of replication
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Which binomial name is correctly written?
a. Escherichia coli b. Escherichia coli c. Escherichia coli d. Escherichia Coli
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Which of the following adaptations helps a plant conserve water?
1.Stomata positioned near indentations that reduce air movement. 2.Air spaces between cells in the mesophyll. 3.Larger plasmodesmata in drought-stressed plants. 4.Leaves oriented perpendicular to the sun.
Biology & Microbiology
Which blood type is rare
?
a. A only b. B only c. AB d. O e. Both AB and O
Biology & Microbiology