Chemical Basis of Life

Question 1

Covalent bonds tend to form between atoms of _____________ in a molecule.

Accepted Answer

Nonmetals

Question 2

____ bonds form between the slightly (+) Hydrogen atom of one H2O and (-) Oxygen of another.

Accepted Answer

Hydrogen

Question 3

What elements tend to form negative ions

Accepted Answer

Nonmetals

Question 4

What element is found in high amounts in the mineral parts of teeth and bones?

Accepted Answer

Calcium

Question 5

Which of these is not one of the 3 most common elements of life?

Accepted Answer

Nitrogen

Question 6

What element is found in nucleic acids as well as phospholipids?

Accepted Answer

Phosphorus

Question 7

_____ covalent bonds form when unequal sharing of electrons creates slight charges in molecules

Accepted Answer

Polar

Question 8

Aside from C, H, and O, which element is found in all amino acids?

Accepted Answer

Nitrogen

Question 9

An ______ has a pH of below 7 while a _____ has a pH above 7.

Accepted Answer

acid; base

Question 10

Aside from C, H, O and N, which element is found in all nucleic acids?

Accepted Answer

Phosphorus

Question 11

What elements tend to form positive ions?

Accepted Answer

Metals

Question 12

What element is found in hemoglobin, the red colored protein that carries O2 in the blood?

Accepted Answer

Iron

Questions 12