Bio 110 F24 Exam 1

When your body breaks down polymers into monomers, this type of reaction is usually called a ________ reaction.

• anabolic

• hydrolysis

• condensation/dehydration

• brinks

What differentiates the 20 amino acids is based on their...

• amino groups

• primary structures

• peptide linkages

• R groups

• All of the following

Which of the following is the same between RNA and DNA?

• the presence of U

• the type of sugar present

• C=G base pairs

• the number of strands

• All of the above

A species has 28% G in its DNA. What percent of T would it have?

• 28%

• 72%

• 56%

• 44%

• 22%

Oxygen can form stable chemical bonds with 2 other atoms. Why?

• it has 6 valence electrons in its outer orbital shell

• it has 2 valence electrons in its outer orbital shell

• it has 4 valence electrons in its outer orbital shell

• it has 8 neutrons in its nucleus

• it has 8 electrons in its nucleus

___________ determine chemical bonding properties of atoms

• All of the above

• Atomic Mass

• Neutrons

• Electrons

• Protons

The nitrogen bases of DNA hold together the two strands of DNA because of _______ bonds.

• Nonpolar covalent

• Polar covalent

• Ionic

• Hydrogen

• Hydrophobic

Which of the following would ONLY be found in a eukaryotic cell?

• Cell wall

• Nucleus

• Cytoplasm

• Ribosomes

• Plasma membrane

Which of the following is a property of all living things?

• Regulate and maintain a constant internal environment (homeostasis)

• Energy use and metabolism

• Response to environmental changes

• Reproduce using DNA

• Can evolve as groups

Homologous structures in evolutionarily related organisms, like the wings of a bat and the front flipper of a whale, most likely result from

• different evolutionary forces

• developmental differences

• shared/common ancestry.

• similar behaviors.

• common environmental needs