Biology

Biology, 14.07.2019 15:30, kamdenburr

Which of these do not require the use of cell energy 1. dna replication 2. cell division 3. diffusion across a membrane 4. protein synthesis

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Biology, 02.07.2019 04:30, paypay319

1. how is facilitated diffusion different from other forms of passive transport? a. in facilitated diffusion, a special protein channel substances cross the cell membrane. b. facilitated diffusion is not a form of passive transport. c. facilitated diffusion requires atp. d. in facilitated diffusion, water flows through protein channels until it reaches a greater concentration inside the cell. 2. which of the following happens to a cell in a hypotonic solution? a. the cell stays the same. b. the cell loses water and shrivels. c. water moves into the cell. d. the cell gains water and expands. 3. what is the role of atp in the process of active transport? a. it provides the energy that cells need to move molecules against a concentration gradient. b. it lengthens the fatty acid chains in the cell membrane. c. it weakens the cell membrane, allowing molecules to pass through more easily. d. it provides the energy to transport the cell in its environment. 4. what kind of environment is described when the concentration of dissolved substances is greater outside the cell than inside? a. hypertonic b. hypotonic c. isotonic d. saline 5. an amoeba expels large particles by what process? a. diffusion b. endocytosis c. exocytosis d. osmosis

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Biology, 13.07.2019 11:50, simmonss1185

Which best explains the relationship between structure and function of the cell membrane ? a- the single layer membrane surrounding the outside of the cell allows for the east removal of waste. b- the lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell c- the fluids inside the membrane buffers the chemical reaction taking place inside the cell d- the lipids from the membrane provide energy for protein synthesis

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Biology, 13.07.2019 23:50, chandra99

What best explains the relationship between structure and function of the cell membrane? the single layer membrane surrounding the outside of the cell allows for the easy removal of waste. the lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell. the fluid inside the membrane buffers the chemical reactions taking place inside the cell. the lipids forming the membrane provide energy for protein synthesis.

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Biology, 17.10.2019 22:00, dominicanaaa

Which statements always apply to the process of diffusion molecules move from high concentration to low concentration molecules move from inside a cell to the outside of cell diffusion require protein in the cell membrane molecules are evenly distributed at the end and diffusion requires energy

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