The health effects of X-rays on a fetus depend on the amount of ____________________ and the ____________________ of the fetus

Fill in the blank(s) with correct word


radiation; age

Biology & Microbiology

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Recent discoveries of microscopic fossils have extended the known history of life to about:

A. 1 billion years ago. B. 2 billion years ago. C. 3.5 billion years ago. D. 4.5 billion years ago.

Biology & Microbiology

Comparative genome studies show that humans and _____________________ shared a common ancestor approximately 5.4 to 6.3 million years ago

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following statements comparing Enterobius vermicularis and Diphyllobothrium latum is incorrect?

A. Both helminths affect primarily children. B. D. latum has fish as an intermediate host, whereas E. vermicularis has no intermediate host. C. E. vermicularis is best treated with mebendazole, whereas D. latum is susceptible to praziquantel. D. Symptoms of both infections are mild.

Biology & Microbiology

Which of the following is false concerning the structures labeled as 4 in the accompanying figure?

a. They are known as cotyledons. b. They indicate that this plant is a eudicot. c. They are part of the maturing embryo. d. They are surrounded by endosperm. e. They are derived from the integuments

Biology & Microbiology