Cnidaria and flatworms exchange gases and remove wastes by way of their:

A) open circulatory systems. B) closed circulatory systems. C) gastrovascular cavities. D) moist skin surfaces. E) respiratory and excretory systems.

Which of the following is one role of RNA polymerase during transcription? to switch uracil with thymine on the exposed gene to build a molecule of mRNA to break down an already existing protein to produce a start sequence

What microbe might grow in the pores of the face and on the tongue and glow pink under UV light?

Which kingdom includes organisms that are unicellular, multicellular, aggregate and colonial in cellular arrangement? A) Archaebacteria B) Eubacteria C) Plantae D) Protista

What are the five characteristics that all minerals have in common?

Whose experiments demonstrated that, given the conditions on the primitive earth, biological monomers could arise spontaneously?

What question did Charles Darwin attempt to answer? APEX

Gods law provided that poor people could gather loose green dropped and fields

Which of the following functions does the myelin sheath perform for a nerve cell? a. Nutrition b. Sensory perception c. Insulation d. Regeneration

The area of land from which water drains into a river

A certain cell continues to divide uncontrollably. Which of it's genes is likely mutated?