Which of the following combinations of sex chromosomes results in Klinefelter syndrome?
A) XO
B) XXX
C) XYY
D) XXY
D
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A neurologist diagnosis a patient with damage to the hippocampus. This observation is consistent with the difficulties the patient reports with
A. forming memories of recent events. B. effectively coordinating movements once initiated. C. planning movements. D. maintaining a steady and regular heartbeat. E. perceiving tactile stimulation from different regions of their body.
How do nastic movements differ from tropisms?
A. Nastic movements are slower than tropisms. B. Nastic movements only occur in the dark. C. Tropisms are directional responses to directional stimuli; nastic movements are the same regardless of the direction of the stimulus. D. Nastic movements happen after a stimulus, tropisms happen during a stimulus. E. Nastic movements are not reversible.
Our closest extinct relative is
a. Homo erectus b. Homo habilis c. Homo neanderthalensis d. Australopithecus afarensis e. Australopithecus africanus
Which sequence accurately describes the path traveled by a new protein from when it first starts to be translated to its release from the cell?
A) nuclear envelope ? ER ? vesicle ? Golgi ? plasma membrane ? external environment B) cytosol ? ER ? Golgi ? vesicle ? plasma membrane ? external environment C) cytosol ? Golgi ? ER ? vesicle ? plasma membrane ? external environment D) plasma membrane ? ER ? vesicle ? Golgi ? cytosol ? external environment E) nucleus ? ER ? Golgi ? vesicle ? plasma membrane ? external environment