Using severed aphid mouthparts, scientists have verified that in most species the phloem translocates
mostly __________, but that __________ may also be translocated.
a. glucose; amino acids
b. glucose; sugar alcohols
c. glucose; cellulose and starch
d. sucrose; raffinose and sorbitol
e. sucrose; glucose
D
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Metal ions are a common type of ____ for enzymes
Fill in the blank with the appropriate word.
Answer the following statements true (T) or false (F)
1. Pneumocystis pneumonia is a common contributory cause of death in AIDS patients. 2. Tinea versicolor is caused by a yeast named Malassezia furfur. 3. Mycetomas are respiratory infections. 4. When grown at room temperature, Coccidioides immitis produces yeast colonies. 5. Histoplasmosis is the most common systemic fungal infection in AIDS patients.
When a polypeptide is being assembled, the bond that forms between a newly added amino acid and the previous amino acid in the chain is this type of bond.
A. hydrophobic B. peptide C. phosphodiester D. hydrogen E. terminal
What fraction of the human genome encodes the exons that produce proteins?
What will be an ideal response?