Four of the following statements about lizards are true. Which statement is false?
A. Lizards are a very small component of the present-day reptiles.
B. Lizards and snakes are more closely related to each other than to turtles.
C. Some lizards are not predators.
D. Lizards have overlapping scales on their bodies.
E. All lizards have three-chambered hearts.
Answer: A
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You are genetic counselor, and a couple comes to you with concerns that if they have a child together
it could have sickle-cell disease. Genetic tests reveal that the man and woman are both carriers for sickle-cell disease. Which of the following would be a correct thing to tell them?
a. Any child that they produce has a 50% chance of having sickle-cell disease, and the rest will be carriers. b. All of their offspring will have sickle-cell disease. c. They should not have any concerns, as no child that they produce should wind up with sickle-cell disease. d. No child that they produce should wind up with sickle-cell disease, but each of their offspring will have a 50% chance of being a carrier. e. Any child that they produce will have a 25% chance of having sickle-cell disease.
The chief scientist on the HMS Challenger expedition was:
a. Charles Darwin. b. Victor Hensen. c. Alexander Aggasiz. d. Charles Wyville Thomas. e. Edward Forbes.
The term __________ describes a state where the
body’s internal fluid environment is maintained within a tolerable range. a. metabolism b. equilibrium c. homeostasis d. integration e. compartmentalization
biogeochemical carbon cycle
What will be an ideal response?