A&P Final Part 2

The subatomic particles that are responsible for the chemical behavior of atoms are the

electrons

We often hear to protect our skin from the damaging ultraviolet radiation of the sun. In some cases sun damage causes thymines next to each other to bind instead of to their complementary base pairs. In which type of molecule would this damage be most problematic?

DNA

Which of the following elements is needed to make a functional hemoglobin molecule

iron

The number of protons always equals the ____________ in a neutral atom

number of electrons

Blood is considered a weak base. Select the pH that best represents blood

pH 7.4

Glycogen and starch are examples of a specific category of carbohydrates called

polysaccharides

During a synthesis reaction, amino acids join to form ________.

proteins

The atomic mass number of an atom is equivalent to the number of__________contained in it's nucleus

protons and neutrons

The complementary base to adenine in a molecule of DNA is

thymine

Rank these elements found in the human body from most common to least common 1) Carbon 2) Hydrogen 3) Nitrogen 4) Oxygen

4, 1, 2, 3

Keratin is a protein that provides toughness to the skin and forms hair and nails. Due to its role in the body, it is best classified as

A structural protein

Cysnide prevents the formation of energy molecules in the human body and leads to death because cells are unable to make

ATP

Which type of functional protein serves as a catalyst in the body's chemical reactions?

Enzymes

Which of these lipids is more "heart healthy" due to the presence of double and triple bonds that cause the fat to stay liquid at room temperature?

Unsaturated fats

Which of the following is found in a molecule of DNA but not in a molecule of RNA?

Deoxyribose

The atomic number of sodium is 11 while the atomic mass number is 23. Which of the following is not true of an atom of sodium?

11 neutrons present in the atomic nucleus

An atom has 6 protons, 8 neutrons, and 6 electrons. Its atomic mass number is

14

Which statement best describes why ATP is an important nucleic acid in the body?

ATP provides s form of chemical energy all body cells can use

In the small intestine, acidic gastric juice entering from the stomach mixes with basic fluids from the pancreas. What type of reaction results from the interaction of these two chemicals?

Neutralization reactions

In order to break a disaccharide down into simple sugar units,

water molecules must be added to each bond