In the hierarchy of skeletal muscle fiber components, the myofibril is made up of myofilaments.
Answer the following statement true (T) or false (F)
True
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What is the role of the serous membranes covering some organs?
a. to provide passage of nutrients for the organ tissues b. to serve as extra tissue for blood flow to the organ c. to prevent friction between the organ and body cavity wall d. to provide a protective outer covering for the organ
Aphasia is loss of the ability to
A) think. B) move the hands. C) walk. D) speak.
Which of the following statements is true?
a. Tonicity refers to the effect of penetrating solutes on cell volume. b. A one molal solution contains 1 mole of solute per liter of solution. c. To accommodate larger molecules, membrane channels have an average diameter of 1 – 1.5 nanometers. d. Carrier proteins span the membrane and can undergo shape changes. e. Aquaporins regulate solute movement across membranes.
What other aspects of Earth's history might make the world colder, with ice at the poles, and when was this a particular issue for tetrapods?
What will be an ideal response?