An individual has been infected with a particular retrovirus. In order for the latent virus DNA to be inherited by subsequent generations stemming from this individual, it must be found
A) in germ line cells.
B) in stem cells.
C) at a point early in childhood.
D) in all cells simultaneously.
E) in somatic cells.
A) in germ line cells.
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A radioactively labeled protein is made by cells and followed through the various organelles in the secretory pathway. After six hours, all of the radioactivity is still primarily in the Golgi apparatus. This suggests that the
A) protein was not translated by the ribosomes. B) protein does not possess a signal peptide for localization within the lumen of the rough endoplasmic reticulum. C) protein possesses a signal for localization within the Golgi apparatus. D) all of the above
A structure in the brain that bridges the higher and lower brain centers. _____ 7) A portion of the brain that processes all sensory information except olfaction and relays information to the appropriate higher brain centers. _____ 8) This part of the peripheral nervous system regulates involuntary body functions, heart rate, and breathing rate. _____ 9) This portion of the central nervous system governs bodily activities during restful conditions. _____ 10) This part of the peripheral nervous system carries sensory information from the skin, skeletal muscles, and joints to the central nervous system and may also direct voluntary movements. _____
A) Autonomic nervous system B) Pons C) Reticular activating system D) Hypothalamus E) Limbic system F) Corpus callosum G) Parasympathetic nervous system H) Sympathetic nervous system I) Thalamus J) Somatic nervous system
What is on the snout of the turtle?
Fill in the blank(s) with the appropriate word(s).
Conjugation by which of the following with an F- cell results in a cell that remains F-?
A) F+ B) Hfr C) F D) A and C E) B and C