Refer to the accompanying figure. What is the structure labeled as 8 in the figure?
a. anus
b. mouth
c. ganglia
d. eyespots
e. pharynx
b
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Viruses infecting algae have never been detected.
Answer the following statement true (T) or false (F)
Why do scientists use model organisms?
What will be an ideal response?
What role does clathrin play in receptor-mediated endocytosis?
a. Clathrin is the receptor where the highly specific binding takes place. b. Clathrin initiates the transcription of the receptor proteins that will coat the pit. c. Clathrin attaches to the plasma membrane’s cytoplasmic side, forming the coated pit. d. Clathrin production blocks the formation of the coated pit.
Viruses are sometimes classified by the organisms they infect. In fact, the first virus discovered only infects a particular plant. What was this first known virus?
a. leaf curl virus b. potato gall virus c. tobacco mosaic virus d. Dutch elm disease