Fermentation is the conversion of sugar into...
a. alcohol
b.acid
c.gas
d.all of the above
e. none of the above
d.all of the above
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Which of the following best describes the physical relationship of the partners involved in lichens?
A) Fungal cells are enclosed within algal cells. B) Lichen cells are enclosed within fungal cells. C) Photosynthetic cells are surrounded by fungal hyphae. D) The fungi grow on rocks and trees and are covered by algae. E) Algal cells and fungal cells mix together without any apparent structure.
List the four macromolecules that make up cells and give a brief description of the structure and function of each. What will be an ideal response?
What protects a cell and may help keep other cells at a distance?
a. cell wall
b. glycocalyx c. microfilaments d. middle lamella e. extracellular matrix
Hershey and Chase set out to determine what molecule served as the unit of inheritance. They completed a series of experiments in which E. coli was infected by a T2 virus. Which molecular component of the T2 virus actually ended up inside the cell?
A) protein B) RNA C) ribosome D) DNA