If a red blood cell, which has an internal solute concentration of 280 mOsm, is placed in a solution of pure water (0 mOsm) ________
A) the cell is hypotonic compared to the environment and will quickly lose water
B) the cell is hypertonic compared to the environment and will quickly lose water
C) the cell is hypertonic compared to the environment and will quickly gain water
D) the cell is hypotonic compared to the environment and will quickly gain water
B
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The stretch reflex
A) is exemplified by the knee jerk, or patellar, reflex. B) if functioning normally, indicates that spinal segments T12—L1 are intact. C) is activated anytime a limb or other body segment is extended. D) All of the answers are correct. E) None of the answers are correct.
Describe the relationship between genes, triplets, codons, and amino acids
What will be an ideal response?
The hormone erythropoietin is produced by the ____________________
Fill in the blank(s) with correct word
A chemical change in which structure prevents polyspermy fertilization?
a. sperm b. acrosome c. ovaries d. zona pellucida e. corpus luteum