What is an ammocoete?

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An ammocoete is the larval stage of a lamprey. What is its possible significance to the evolution of vertebrates? Because basic chordate and many vertebrate characterisitcs are present, many consider it the closest living form to ancestral chordates.

Biology & Microbiology

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A chemist adds a chemical to pure water and there is a 100 fold increase in the concentration of hydrogen ions. What is the best approximation of the new pH value?

A. 0 B. 5 C. 7 D. 9 E. 14

Biology & Microbiology

The sequential stages through which individuals develop, grow, maintain themselves, and reproduce are collectively

known as the ____.

a. central dogma b. catabolic reactions c. anabolic reactions d. transformation e. life cycle

Biology & Microbiology

After birth, which hormone causes the uterus to "shrink" and also causes the mother's breast tissue to

contract forcing milk into the ducts? a. estrogen b. prolactin c. progesterone d. oxytocin e. hCG

Biology & Microbiology

A regression analysis of two traits yields a slope of 0. Explain the biological meaning of this value

What will be an ideal response?

Biology & Microbiology