How many valence electrons does a carbon atom have?

two

four

six

Which of the following is FALSE regarding the structure of DNA? A) Nitrogenous bases are found on the interior of a DNA molecule. B) Nucleotides within a single strand of DNA are joined together by peptide bonds.

Define mutation using the word gene

What is thin layer chromatography

Suppose no crossing-over takes place. Use step 5 to explain why meiosis will still increase genetic variation.

Why do people hate others

Which of the following sentences contains an infinitive? A. Charlotte took her cousin Clay to the movies each year on his birthday. B. Travis practiced pitching to the side of the house until his mom got mad. C.

What is not an effect for space travel

By pumping water over their gills, fish and aquatic mollusks? a. keep their gill membranes moist b. maintain their body temperature c. keep themselves moving through the water d. promote diffusion of oxygen and carbon dioxide

If the thyroid gland is unable to produce iodinated thyroglobulin, what is the effect on hormone production?

What factors have an effect on sea life in the long island sound