Which of the following is a true statement?
a. Flowers may have secondary growth.
b. Secondary growth is a common feature of eudicot leaves.
c. Secondary growth is produced by both the vascular cambium and the cork cambium.
d. Primary growth and secondary growth alternate in the life cycle of a plant.
e. Plants with secondary growth are typically the smallest ones in an ecosystem.
Ans: c. Secondary growth is produced by both the vascular cambium and the cork cambium.
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In a monocot seed, what is the fate of the
coleoptile?
a. it becomes the stem b. it becomes the root c. it stops growing d. it becomes the cotyledon e. it becomes the hypocotyl
In the central nervous systems, axons of several neurons traveling together are called ____
a. nuclei b. fibers c. bundles d. tracts e. filaments
Trace the path of a red blood cell in a circuit that takes it from the capillary bed of the right kidney to the capillary bed of the left kidney. Assume that you are doing this for an animal with a double circulation system
A) capillary bed of right kidney ? venules ? veins ? right atrium ? right ventricle ? pulmonary arteries ? capillaries of lungs ? pulmonary veins ? left atrium ? left ventricle ? aorta ? arteries ? arterioles ? capillary bed of left kidney B) capillary bed of right kidney ? venules ? veins ? right atrium ? right ventricle ? pulmonary veins ? capillaries of lungs ? pulmonary arteries ? left atrium ? left ventricle ? aorta ? arteries ? arterioles ? capillary bed of left kidney C) capillary bed of right kidney ? venules ? veins ? left atrium ? left ventricle ? pulmonary arteries ? capillaries of lungs ? pulmonary veins ? right atrium ? right ventricle ? aorta ? arteries ? arterioles ? capillary bed of left kidney D) capillary bed of right kidney ? arterioles ? arteries ? aorta ? right atrium ? right ventricle ? pulmonary arteries ? capillaries of lungs ? pulmonary veins ? left atrium ? left ventricle ? veins ? venules ? capillary bed of left kidney
A gene is coded for only one protein and associated with only one specific tissue type. Is this statement correct and why?
A. No, all genes can encode more than one protein in multiple tissue types due to exon splicing formation. B. Yes, all tissue-specific proteins are only expressed from a single gene for that specific tissue. C. Yes, all genes only code for one protein normally specific to one tissue type. D. No, some genes can be go through alternative splicing leading to the production of different proteins in different tissues.