Which two of the following situations are opportunities for microbes to act as a group rather than as individuals?
Answer:
- in a biofilm
- when nanowires are present
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Growth and development of plant parts involves _____. I) cell division to produce new cells II) enlargement and elongation of cells III) specialization of cells into tissues
A) only I B) only II C) only III D) I and III E) I, II, and III
Genetic manipulation techniques have been most successful in __________ populations
a. California condor b. plant c. panda d. snail darter
Phospholipase C catalyzes the reaction in which:a
PIP2 is split. b. IP3 is converted to DAG. c. a protein kinase is activated. d. DAG is converted to PIP2. e. calcium ions are released from the ER.
It is estimated that humans can produce over 1.5 million different types of antibodies. Which of the following statements regarding this extraordinary variation is INCORRECT?
A. We inherit over 1.5 million different and distinct immunoglobulin genes from our parents at fertilization. B. V and J domains of antibody light chains are randomly joined. C. Random segments of DNA can be removed from antibody genes. D. Cytosines in the variable regions of antibody genes can be converted to uracils via hypermutation. E. V and J domains of antibody heavy chains are randomly joined.