Originally, fungi were considered a type of plant. Now they are classified in their own kingdom. What characteristics differentiate fungi from plants?
What will be an ideal response?
Plant cell walls are based on cellulose; fungal cell walls are based on chitin. Plants have chloroplasts and carry on photosynthesis; fungi lack chloroplasts and obtain energy from other organisms.
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You grow two trays of Arabidopsis plants under identical conditions, except that one tray of plants is exposed to a gentle breeze for several hours each day
Compared to plants grown in calm conditions what would you expect to see in the wind-exposed plants? I. changes in the expression of many genes II. taller flower stalks III. shorter flower stalks IV. more flexible cell walls V. no changes in 2nd messengers VI. increases in 2nd messengers and/or phosphorylated proteins VII. increased levels of Pfr VIII. stiffer cell walls. A) I, III, VI, VIII B) II, IV, V, VII C) III, IV, VII D) VI, VII, VIII E) wind has no effect on plant development
During which stage of interphase is DNA replicated?
A) G2 B) G1 C) S
If a cell normally has 20 chromosomes in its diploid stage, how many will be present in each cell at the end of meiosis 2?
a. 20 b. 10 c. 40 d. 5
Some cells have aquaporins—channels that facilitate the flow of water molecules through the plasma membrane. For these cells, what regulates the rate and direction of water diffusion across the membrane?
(a) aquaporin conformation (b) resting membrane potential (c) solute concentrations on either side of the membrane (d) availability of ATP