Biology-Semester 1

How many different amino acids are bonded together by peptide bonds?

• 20

• 18

• 22

• 24

What is the mass number defined as?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

What is the number of protons in a Magnesium atom?

• 12

• 24

• 23

• 8

Which of these feel slippery?

The smallest component of an element, having the chemical properties of the element

• atom

• element

• molecule

• compound

Which of the following is NOT a type of macromolecule?

• Carbohydrates

• Lipids

• Proteins

• Vitamins

What is the difference between a monosaccharide and a disaccharide?

• Monosaccharides are composed of two sugar units, while disaccharides are composed of one.

• Monosaccharides are single sugar molecules, while disaccharides are composed of two monosaccharide units.

• Monosaccharides are complex carbohydrates, while disaccharides are simple sugars.

• Monosaccharides are found in proteins, while disaccharides are found in lipids.

Who proposed that all cells come from pre-existing cells after viewing cell division using a microscope?

• Virchow

• Leeuwenhoek

• Hooke

• Schwann

Which three scientists are credited for the creation of The Cell Theory?

• Schwann, Schleiden, and Virchow

• Hooke, Leeuwenhoek, Captain Hook

• Virchow, Leeuwenhoek, and Schwann

• Schleiden, Schmeiden, Steve

Solutions that contain concentrations of H+ ions higher than pure water.

• are acids

• are bases

• have a pH value above 7

• are enzymes