The resumption of growth after a period of arrested embryonic development is:
a. senescence
b. germination
c. imbibition
d. parthenogenesis
e. thigmotropism
b
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The primary function of the integument of an ovule is to _____
A) protect against animal predation B) ensure double fertilization C) form a seed coat D) direct development of the endosperm E) produce hormones that ensure successful pollination
You are working in a laboratory that is studying a newly isolated virus. Your job is to culture the virus using in vitro methods. Upon observing your inoculated tissue culture specimen one day, you notice clumps of cells growing on top of the original monolayer of cells. Microscopic analysis of stained cells from the culture reveal an alteration in host cell membrane protein content and chromosomal structure. Based upon this information, you hypothesize that the virus you are studying is ________.
A. a viroid B. an oncovirus C. a bacteriophage D. a prion E. a satellite virus
Within the kingdom Animalia there are about:a
325 phyla. b. 16 classes. c. 32 classes. d. 35 phyla. e. 6 phyla.
When a sodium atom and a chlorine atom interact to complete their valence shells
A. they form 1 polar covalent bond B,. an electron is transferred from sodium to chlorine, turning the sodium atom into an anion and the chlorine atom into a cation and allowing the two atoms to form an ionic bond C. an electron is transferred from sodium to chlorine, turning the sodium atom into a cation and the chlorine atom into an anion and allowing the two atoms to form an ionic bond D. they form 2 polar covalent bonds