Haustorial roots of dodders and other nonphotosynthetic, parasitic plants rob the host plant of
a. sugars.
b. minerals.
c. water.
d. sugars and mineral
e. sugars, minerals and water
E
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Match the following items with the correct phrases.
_______1. Organisms that live on dead and decaying organic matter are said to be __________. _______2. The type of relationship that termites have with the cellulose-eating protozoa that live in their intestinal tract. _______3. A symbiotic relationship that is beneficial to both parties (symbionts) is said to be a __________ relationship. _______4. A lichen is an example of a __________ relationship. _______5. A symbiotic relationship that is beneficial to one party (symbiont), but of no consequence to the other is said to be a __________ relationship. _______6. The type of relationship that humans have with the Escherichia coli organisms that live in their colon. _______7. A symbiotic relationship that is beneficial to one party (symbiont), and detrimental to the other is said to be a __________ relationship. a. commensalistic b. mutualistic c. parasitic d. saprophytic e. synergistic
Bioenergetics can be simply defined as
A) a subdivision of biology. B) applied thermodynamics. C) the units in which energy is expressed. D) the application of biological principles to physics. E) holding constant the variables in the universe.
Antibiotic resistance is becoming more common in disease-causing bacteria because
A. some patients do not take the antibiotics as directed. B. antibiotics are sometimes prescribed for viral infections (due to pressure from patients). C. All of the answer choices are correct. D. antibiotics are used in feed for livestock. E. antibiotics are used to treat infections in cattle, chickens, and other animals used for agricultural purposes.
One of the four nucleotide bases in DNA is replaced by a different base in RNA. Which base is it, and what is it replaced by?
A) cytosine, replaced by guanine B) thymine, replaced by uracil C) thymine, replaced by guanine D) guanine, replaced by cytosine E) adenine, replaced by uracil