Tagmata are segments of the body that represent two or more previous body segments fused together.
Answer the following statement true (T) or false (F)
True
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Match each root adaptive type with the plant in which it is found.
1. Buttress roots 2. Prop roots 3. Pneumatophores a. Corn b. Tropical trees c. Mangrove trees
Action potentials are propagated in a one-way direction down a neuronal plasma membrane because ____
a. the action potential is of insufficient intensity to stimulate the voltage-gated ion channels behind it b. the adjacent channels upstream from the action potential are ligand-gated c. the adjacent channels upstream from the action potential are in a refractory period d. voltage-gated ion channels are suppressed e. the adjacent channels upstream from the action potential are at their threshold potential
Two microorganisms that produce toxins (intoxication) in food that can cause symptoms after the food is consumed even without infection by the microorganisms are:
A. Staphylococcus aureus and Clostridium botulinum B. Streptococcus pyogenes and Clostridium botulinum C. Staphylococcus aureus and Streptococcus pyogenes D. Escherichia coli and Shigella dysenteriae E. Vibrio cholerae and Escherichia coli
In Table 8.1, what will be the result of conjugation between cultures 1 and 2?
A) 1 will remain the same; 2 will become F+, leucine-, histidine- B) 1 will become F-, leu+, his+; 2 will become F+, leu-, his- C) 1 will become F-, leu-, his-; 2 will remain the same D) 1 will remain the same; 2 will become F+, leu+, his+ E) 1 will remain the same; 2 will become F+ and recombination may occur