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Movement of Water in Plants

Can we say th...

Question

Can we say that passive transport is confined to anionic channel proteins while active transport is confined to cationic channel protein? Thanku

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Solution

no bache, both anions and cations can move via active transport.

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Consider the following statements and choose the correct answer.

I. Carrier proteins are needed by both facilitated diffusion and active transport and are sensitive to inhibitors that react with the protein.

II. Different types of proteins present in the membrane play a major role in both active as well as passive transport.

III. The carrier proteins needed by facilitated and active transport are specific.

IV. There is no need of energy to pump molecule against a concentration gradient in active transport.

V. Transport rate reaches the saturation point when all the active proteins are used.

Q. In passive transport, carrier protein is required to facilitate transport of

Q. In active transport, ATP energy is used by carrier proteins to transport materials

Q. Facilitated diffusion requires protein channels to transport molecules across a membrane but does not require a concentrantion gradient.

Q. Which among the following statements are incorrect?
I. Transport proteins are needed by both facilitated diffusion and active transport.
II. Porins are carrier proteins
III. The carrier proteins needed by facilitated and active transport are specific.
IV. There is no need for energy to pump molecules against a concentration gradient in active transport.
V. Transport rate reaches saturation point when all the transport proteins are used or engaged.

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