The phylogeny above shows:
A. orangutans and gorillas are more closely
related than humans and gorillas.
B. humans and gorillas are more closely
related than orangutans and gorillas.
C. the gorilla is the most recent common
ancestor to bonobos, chimps and humans.
D. he orangutan is the most recent common
ancestor of all great apes.
E. all great apes walk with an upright gait.
B
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An estuary is observed as having dense seawater at the surface and freshwater at the bottom after strong winds. What is being exhibited?
a. Tidal overmixing b. Brackish water c. Well-mixed estuary d. Partially mixed estuary
A motor neuron and all the muscles under its control are called what kind of unit?
a. end b. movement c. muscle d. motor e. coordination
The following drawing represents simultaneous transcription and translation in E. coli
Answer the questions below the drawing. The arrow gives the direction of the RNA polymerase. (a) Is the letter A nearer the 5' or the 3' end of the molecule? (b) Is the letter B nearer the 5' or the 3' end of the molecule? (c) Is the letter C nearer the 5' or the 3' end of the tRNA molecule? (d) What is the "S" value for the large rRNA that is closest to the letter D? (e) Which terminus (N or C) of the growing polypeptide chain is nearer to the letter E?
The naive mature B lymphocytes and T lymphocytes develop initially in the bone marrow and thymus respectively. Upon contact with the microbial antigens, these cells differentiate to memory cells among other forms
a. true b. false