Which of the following molecules mediate the association of actin filaments with the cadherins in an adherens junction?
a. Plakoglobulins
b. Plectins
c. Talins
d. alpha- and beta-catenin
Ans: d. alpha- and beta-catenin
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A particular cell contains all of the standard histones but lacks several histone variants. Which of the following MAY be true of this cell?
A. The cell will be completely unable to remodel its chromatin. B. The cell will have an enhanced ability to chemically modify its histones. C. The cell will be unable to express any of its genes at all. D. The cell will express different sets of genes than other cells in the same organism E. The cell will not be able to divide.
The energy in chemical bonds is a type of ___________________ energy
Fill in the blank(s) with correct word
Which statement is TRUE?
a. The laws of thermodynamics do not apply to living organisms. b. Producers in ecosystems have the highest concentrations of energy. c. The energy available to do cellular work will exist forever. d. The amount of energy available to consumers is more than that available to producers. e. When plants trap energy, they convert it into light.
Which of the following is a vascular plant?
a. moss b. fern c. liverwort d. hornwort e. charophyte