Cork cambium and the tissues it produces are collectively known as:
a. periderm.
b. epidermis.
c. xylem.
d. pith.
e. cortex.
A
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Which of the following are formed during the dissociation of carbonic acid as it occures in the tissue capillaries.
A) Water B) Bicarbonate ions C) Hydrogen ions D) Cardon dioxide
The difference between the rate of carbon uptake in photosynthesis and the rate of carbon loss due to autotrophic and heterotrophic respiration is the net ________ productivity
Fill in the blank(s) with correct word
The property of dynamic instability implies that the individual protein subunits of microtubules are held together by:
A. covalent bonds. B. disulfide bonds. C. non-covalent interactions. D. All of the above are correct.
A characteristic of all cancers is that ____
a. the cells divide continuously b. they have a benign form and a deadly form c. several mutations in several different genes are required in order for cancer to develop d. they are always due to a chromosome disjunction mutation e. the rapid proliferation of cells is required