Most birth defects are due to the inheritance of an abnormal number of chromosomes.
Answer the following statement true (T) or false (F)
False
Most birth defects are the result of poor health practices during pregnancy.
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Which of the following is NOT true of Epsilonproteobacteria?
A) Abundance directly correlates with sulfur metabolism activities. B) Pathogens require relatively low O2 levels to grow. C) Epsilonproteobacteria are present in freshwater, marine systems, and terrestrial environments. D) Epsilonproteobacteria are prolific metal reducers.
During the catarrhal stage of pertussis, symptoms are:
a. runny nose and mild cough. b. severe and violent coughing. c. vomiting and "whooping" as air is rapidly inspired into the lungs past a swollen glot-tis. d. lymphocytosis and fever.
As a pond starts to dry out at the end of the rainy spring season, a researcher notices that toads
burrow into the soil where they can hibernate for up to nine months. What is the benefit of hibernation?
a. reduced metabolic rate that ensures survival b. increased body temperature that ensures survival c. a period of time during which the animal completes sexual maturity d. all of these
Which of the following statements is FALSE with regard to DNA replication?
a. DNA synthesis proceeds in the 5’->3’ direction. b. The strand being copied is read in the 5’->3’ direction. c. Both strands replicate at the same time. d. The position of the replication fork is constantly moving. e. Two identical DNA polymerase molecules catalyze replication.