When a motor neuron transmits a message, it releases the neurotransmitter serotonin
____________________ Indicate whether the statement is true or false.
False - acetylcholine
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You isolate a piece of DNA from a microorganism you cultivated from your teeth. The piece of DNA is 94 kbp is size and is circular
You sequence it and discover that it contains genes for capsule formation, pili, and antibiotic resistance, as well as an origin of replication. What is this piece of DNA and how is it related to the other genetic elements found in prokaryotic cells? What will be an ideal response?
LOD (logarithm of the odds) scores are used to indicate linkage between genes. A LOD score of ________ or greater is a strong indicator of linkage.
A) 0.5 B) 1 C) 2 D) 3
Wilkins and Franklin studied the structure of DNA using ____
a. molecular scale models of nucleotides b. X-ray diffraction c. computer-assisted graphics d. electron microscopy e. light microscopy
What happens to an astronaut who spends 2 months in the weightless environment of a space capsule?
A) Bone density increases and muscle mass increases. B) Bone density decreases and muscle mass increases. C) Bone density decreases and muscle mass decreases. D) Bone density increases and muscle mass decreases.