Tetanus antitoxin can cross the placenta
Indicate whether this statement is TRUE or FALSE.
TRUE
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In most primate species, males rarely participate in _________.
A. infant care B. breeding C. hunting D. establishing dominance.
Answer the following statements true (T) or false (F)
1. Sodium and potassium ions can easily diffuse through the lipid bilayer of plasma membranes. 2. Transport of salts against their concentration gradients is energetically expensive. 3. If you measured the urine concentration of a freshwater fish, you would find that it was more concentrated than its blood. 4. If you measured the urine concentration of a saltwater fish, you would find that it was more concentrated than its blood. 5. Sweat has a higher salt concentration than the blood does in humans.
The insertion of a skeletal muscle is
a. attached to the less mobile portion of the skeleton. b. attached to the portion of the skeleton that moves when the muscle contracts. c. never attached to the skeleton. d. its belly.
What would a graph of internal lung pressure compared to atmospheric pressure look like during one inhalation/exhalation cycle in a frog?
A. A B. B C. C D. D E. E