Which of the following are functions of rhizobacteria?
I) produce hormones that stimulate plant growth
II) produce antibiotics that protect roots from disease
III) absorb toxic metals
IV) carry out nitrogen fixation
A) only II and IV
B) only I, II, and III
C) only III and IV
D) I, II, III, and IV
D
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Which of the following is a characteristic only found in eucoelomates?
a. a true coelom b. a digestive cavity c. an ectoderm d. a mesoderm
Which of the following is not true concerning the structure labeled 2 in Figure 35-2?
a. It is known as periderm. b. It is produced by cork cambium (not shown). c. It is composed largely of primary tissue. d. It is composed largely of cells that are dead at maturity. e. It is commonly called outer bark
In eukaryotes, where does glycolysis occur?
a. cytosol b. lysosomes c. Golgi complex d. mitochondrial matrix e. mitochondrial inner membrane
Animals need O2 because it ________
A) plays a role in obtaining energy from food B) helps animals synthesize proteins C) is necessary to make CO2 D) is needed to deliver hemoglobin to the cells of an animal's body