During inhalation,
a. the pressure in the thoracic cavity is greater than the pressure within the lungs.
b. the pressure in the pleural sac is less than the pressure within the lungs.
c. the diaphragm moves upward and becomes more curved.
d. the chest cavity volume decreases.
e. movement of the diaphragm is inhibited
B
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Which of the following processes does not generate genetic variation during sexual reproduction?
A. Crossing over B. Random fertilization C. Independent assortment D. All of the processes above generate genetic variation
Known to cause an inflammatory bowel disease referred to as Johne's disease in cattle, sheep, and goats, which organism has been isolated from the bowel mucosa of patients with Crohn dis-ease?
a. M. paratuberculosis b. M. avium-intracellulare c. Mycobacterium phlei d. Mycobacterium lepraemurium
The process of making new DNA molecules is semi-conservative. This means that every new DNA molecule is composed of
A.) two completely identical strands of DNA. B.) one original and one new strand of DNA. C.) one strand of DNA and one strand of RNA D.) two strands that mix original and new DNA.
A cell structure consisting of RNA and protein organized into two subunits and functioning as the site of protein synthesis in the cytoplasm; In eukaryotic cells, the ribosomal subunits are constructed in the nucleolus
What will be an ideal response?