All primates have thumbs, but only Old World monkeys, great apes, and humans have truly opposable thumbs.
Answer the following statement true (T) or false (F)
True
It is true that all primates have thumbs, but only Old World monkeys, great apes, and humans have truly opposable thumbs.
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Which of the following cells are classified as phagocytes? Select all correct choices
A. macrophages B. natural killer cells C. neutrophils D. mast cells E. plasma cells
The morphology of plants is determined
A. by cell division at the tip of the shoots and cell elongation at the tip of the roots. B. by cell division at the tip of the roots and cell elongation at the tip of the shoots. C. by cell elongation at both the tip of the shoots and the roots. D. by cell death (apoptosis) along the radial axis. E. by cell division at both the tip of the shoots and the roots.
Jacob, Monod, and Pardee constructed a mutant strain of E. coli that carried a lacI-gene mutation (encodes the lac repressor). Which is TRUE of this mutant strain?
A. Transcription of the lac operon is repressed. B. Transcription of the lac operon does not change. C. The lac operon is constitutively expressed. D. Nonfunctional proteins are produced. E. The lac operon is constitutively expressed and nonfunctional proteins are produced.
Many parasites have a dormant stage that is resistant to desiccation as well as heat and cold
This stage is called a(n) __________.
a. cyst b. vector c. intermediate host d. larva