________ exhibits a lot of apparently empty space, and is found in many serous membranes
A) Areolar tissue
B) Osseous tissue
C) Blood
D) Adipose tissue
E) Dense irregular connective tissue
A
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The property that allows the heart to initiate each heartbeat itself is called ________.
Fill in the blank(s) with the appropriate word(s).
Prions are pathogenic proteins that are linked to different neurodegenerative diseases. Investigations of some have indicated that normal cellular proteins and prions have the same amino acid sequence. How is this possible?
A. Though the primary structure is the same between the prion and the normal cellular protein, differences at higher levels (secondary or tertiary) alter protein activity. B. The amino acids of the prion must have more hydrophilic sections, causing it to interact with the lipids of the plasma membrane and disrupting cell activity. C. The amino acid sequence is not important to the function of the protein because protein function is completely determined by the pH of the environment. D. The double helix structure of proteins is easily altered by separating the nitrogenous bases holding the strands together, allowing for a protein to act as a prion.
Once we reach adulthood and our bones are fully formed and hardened, they cannot be remodeled
Indicate whether this statement is true or false.
In which type of scar does the scar tissue extend beyond the boundary of the injury into normal tissue?
a) Hypertrophic scar b) Keloid scar c) Proliferative scar d) Inhibitory scar e) Granuloma