The targets of the T4 bacteriophage during attachment to Escherichia coli are
a. iron-uptake proteins.
b. maltose-transport proteins.
c. carbohydrates in the LPS layer of the outer membrane.
d. appendages of the cell, pili, and flagella.
Answer: C
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The base sequences that appear in eukaryotic DNA and are used to make mRNA for a specific protein are the _____ of a gene.
Fill in the blank(s) with the appropriate word(s).
Caecelians, such as the one pictured here, are a type of:
1.Amphibian
2.Crocodilian
3.Reptile
4.Nematode
An example of ____________________ occurs in a rare condition called the Bombay phenotype, where a mutation in
an unrelated gene prevents expression of the A and B blood phenotypes, making those with this condition phenotypically blood type ____________________ Fill in the blank(s) with the appropriate word(s).
For viewing which of the following would a scanning electron microscope not be the instrument of choice?
a. The complexity of T-even bacteriophages b. The helical structure of deoxyribonucleic acid (DNA) c. Human erythrocytes (red blood cells) d. E. coli bacteria