Bone structure
What will be an ideal response?
Bones are organs because they contain different types of tissue. Bone (osseous) tissue predominates, but a bone also has nervous tissue, cartilage, fibrous connective tissue, muscle cells, and epithelial cells in its blood vessels.
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Green seed color is dominant over yellow seed color. If a plant produces gametes with only
yellow seed color, which of the following must be true?
a. Both parents were homozygous recessive for this trait. b. Both parents carried the recessive trait. c. One parent was homozygous recessive, and the other was homozygous dominant. d. Both parents were homozygous dominant for this trait.
Which characteristic of birds is essential to their ability to fly?
a. pneumatic bones b. cutaneous respiration c. a lateral line d. mammalian lungs
When the human brain's normal electrical activity is suddenly altered, a seizure can result. Seizures cause several behavioral and physical complications such as sudden mood changes, muscle spasms, or uncontrollable body shaking. Seizure impulses often
start in one hemisphere of the brain and travel to the other. Which of the following surgical treatments would reduce the severity of seizures? A) surgically altering the hypothalamus so that the patient's biological clock has altered circadian rhythms B) severing the corpus callosum so that the brain has diminished ability to send messages between the two cerebral hemispheres C) severing the parietal lobe so that speech capabilities are diminished D) stimulating the cerebrum to allow the retention of short-term memory capabilities
The ability of a pathogen to enter a cell, spread, and cause disease is termed
a. pathogenesis. b. invasion. c. colonization. d. adherence.