________ results in the production of spores in flowering plants
A) Fertilization
B) Germination
C) Meiosis
D) Mitosis
E) Spermatogenesis
C
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Match the following items with the correct phrases.
_______1. An arachnid ectoparasite; one species causes human scabies; larval forms of some species are referred to as “chiggers.” _______2. An insect ectoparasite; the vector of plague. _______3. An arachnid ectoparasite; the vector of Rocky Mountain spotted fever. _______4. Pediculus humanus var. corporus; an infestation with these insects is known as pediculosis; in the trenches in World War I, these were known as “cooties.” _______5. An insect called Phthirus pubis. _______6. An arachnid ectoparasite; the vector of Lyme disease. a. body louse b. “crab” louse c. flea d. mite e. tick
Describe the process by which botulinum toxin interrupts the crossbridge cycle.Provide other possible uses for this
toxin.
Indicate whether the statement is true or false.The fossil records indicates that ________ lived in families of male-female pairs, used fire, and left evidence of social cooperation (lived communally).
A) Homo habilis B) Australopithecus C) Dryopithecus D) Homo erectus
Which of the following statements about the nucleus is NOT true?
A. The nucleus stores the coded instructions for making the cell's proteins B. The nucleus usually contains a nucleolus region which is where ribosome assembly begins C. The nucleus us the site of protein assembly D. The nucleus us surrounded by a nuclear envelope that lets materials in and out