Sphagnum is an important component of which system?
A) bottomlands
B) peatlands
C) swamps
D) marshes
B
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Gene expression in developing organisms is regulated on several different levels. In many developing animals, regulation of gene expression is influenced by the action of Hox genes. Which of the following regulatory elements is produced by many Hox genes?
A) transcriptional factors B) cell-surface molecules for cell-cell interactions C) signals from maternal cytoplasm, such as bicoid D) mRNA processing factors
Which of the following is NOT true about prolonged
drought? a. It is very rare. b. Some are known to have lasted more than 200 years. c. It contributed to the collapse of the Mayan civilization. d. Afghanistan has recently suffered its worst in 100 years. e. It impacts global food supplies.
Glycogen, starch and cellulose are examples of ____________________ or complex carbohydrates. Fill in the blank(s) with the appropriate word(s)
Active transport requires the input of energy into a system so as to move solutes against their electrochemical and concentration gradients. Which of the following is not one of the common ways to perform active transport?
What will be an ideal response?