As a plant cell grows a new cell wall the secondary wall forms
A. outside of the primary cell wall.
B. in the middle lamella
C. between the primary cell wall and plasma membrane.
D. in the cytoplasm
E. inside of the plasma membrane.
Answer: C
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Kinases are enzymes that can phosphorylate (transfer phosphate groups onto) macromolecules such as proteins. A particular kinase, Kinase 1 is known to promote cell division. It promotes cell division by phosphorylating Protein X. Phosphorylation of Protein X activates Protein X. Once activated, Protein X stimulates the production of other proteins such as Protein Y and Z that directly promote
cell division. In order to function, Kinase 1 requires the presence of Metal A. However, in the presence of Protein A, Kinase 1 is nonfunctional. From the description, what is considered a cofactor of Kinase 1? A. Protein X B. Protein Y C. Protein Z D. Metal A E. Protein A
The last common ancestor of fungi, mammals, and archaea likely had which of the following characteristics?
A. both a plasma membrane and a circular chromosome B. both a circular chromosome and membrane-bound organelles C. both free-floating genetic material (DNA) and a distinct nucleus D. both membrane-bound organelles and a circular chromosome E. both a distinct nucleus and a plasma membrane
Net energy balance is an important measure because it allows for comparison of biofuels based on the
What will be an ideal response?
Whisk ferns, club mosses, and horsetails have all the following characteristics in common with ferns except:
A. all of these plants are seedless tracheophyte plants. B. all of these plants produce flagellated sperm. C. all of these plants form antheridia and archegonia. D. all of these plants require free water for the process of fertilization to occur. E. all of these plants have no vascular tissue.