This muscular valve prevents gastric juices from flowing back out of the stomach and into the esophagus

What will be an ideal response?


cardiac sphincter

Biology & Microbiology

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The last case of naturally contracted smallpox occurred in

A. 1900. B. 1950. C. 1965. D. 1977. E. 1989.

Biology & Microbiology

Discuss the reasons why cloning transgenic animals may be preferable over traditional breeding. What are some of the

problems with animal cloning?

What will be an ideal response?

Biology & Microbiology

In a population with limiting resources, the J-shape of the population growth curve indicates that

A. the population size is approaching the carrying capacity for its resources. B. the population is experiencing exponential growth. C. the population is experiencing logistic growth. D. the population has both unlimited resources and is experiencing exponential growth. E. resources for the population are unlimited.

Biology & Microbiology

If you are not satisfied with your physician, ________

A) it is too late to find a new one because you signed a contract B) your insurance company requires you to stay with him or her C) you are allowed to find another one who better suits your needs D) you should go to the ER with every symptom

Biology & Microbiology