Which statement is NOT true about cartilage?
A. The matrix of cartilage includes calcium salts.
B. The matrix of cartilage is both solid and flexible.
C. Adult bodies possess structures that are made up of cartilage such as the nose, ear, and pads between the vertebrae in the backbone.
D. The human fetal skeleton is made up of cartilage.
E. Cartilage cells are located in small spaces called lacunae.
Answer: A
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Which of the following statements is
CORRECT?
a. A solvent will diffuse from a hypotonic solution to a hypertonic solution. b. A solvent will diffuse from a hypertonic solution to a hypotonic solution. c. The concentration of the solute is greater in a hypotonic solution than in a hypertonic solution. d. A solvent will experience net flow between two isotonic solutions. e. Osmosis only occurs when both solutions separated by a membrane are hypertonic.
Which of the following statements is false?
a. Whales use their jaws to hear. b. Whales lack a pair of middle ears. c. Killer whales use echolocation and have ears that are sensitive to high-frequency sounds. d. Humpback whales emit very low-pitched sounds that travel long distances underwater. e. Sound waves are transmitted through a layer of fat before being transduced in whales.
Two large, open spaces called the ________ contain three convoluted shelflike bones that increase the surface area for conditioning inhaled air
Fill in the blank(s) with correct word
Griffith's experiments with S. pneumoniae were significant because they showed that traits could be transferred from one organism to another. What else did he find that was significant?
a) The transferred traits were heritable b) DNA was the genetic material c) A virus made the bacteria pathogenic d) Protein could not be the genetic material e) Heat kills bacteria