Recognition of self versus non-self is accomplished by ____
a. macrophage function
b. complement system activation
c. B and T cell cloning
d. the presence of MHC markers on cell membranes
e. memory cell formation
ANSWER: d
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Nutrient cycling through ecosystems can be depicted using a(n) ____
Fill in the blank with the appropriate word.
Carbon is rarely deficient in plants
a. True b. False
Which of the following enzymes join the
paired sticky ends of DNA fragments? a. reverse transcriptases b. restriction enzymes c. DNA ligases d. DNA polymerases e. polynucleotide kinases
The evolution of organisms in the three domains and four kingdoms is most accurately described by which sequence?
A. Protists to Prokaryotes to Fungi, from Fungi separately to Plants and Animals B. Prokaryotes to Protists to Plants, from Plants separately to both Animals and Fungi C. Prokaryotes to Protists, from Protists separately to Fungi, Plants, and Animals D. Prokaryotes to Fungi to Protists to Plants to Animals E. Prokaryotes to Protists, separately to Animals and Plants with Fungi a loss of plant photosynthesis