$$\text{Atomic number} = 6, \text{Mass number} = 12$$

Question 1

Which of the following is NOT one of the seven traits of living things?

Accepted Answer

Ability to move by flagella

Question 2

Which domain of life contains organisms that can survive in extremely hot environments, such as hot springs?

Accepted Answer

Archaea

Question 3

A cell is observed to have no nucleus, a single circular chromosome, and no membrane-bound organelles. Which type of cell is this?

Accepted Answer

Prokaryotic cell

Question 4

Which of the following statements about eukaryotic cells is TRUE?

Accepted Answer

They can be unicellular or multicellular

Question 5

Which step of the scientific method involves making a prediction that can be tested?

Accepted Answer

Hypothesis

Question 6

An atom has 6 protons, 6 neutrons, and 6 electrons. What is its atomic number and mass number?

Accepted Answer

$$	ext{Atomic number} = 6, 	ext{Mass number} = 12$$

Question 7

Which of the following best describes an isotope?

Accepted Answer

Atoms of the same element with different numbers of neutrons

Question 8

Which type of chemical bond involves the sharing of electron pairs between atoms?

Accepted Answer

Covalent bond

Question 9

Water is known as the universal solvent. Which property of water allows it to dissolve many substances?

Accepted Answer

Its ability to form hydrogen bonds

Question 10

Which of the following is a trace element essential for life, even though it makes up less than 1% of living matter?

Accepted Answer

Zinc

Question 11

Which functional group is responsible for acting as a base and is found in every amino acid?

Accepted Answer

Amino group ($$-\mathrm{NH}_2)$$

Question 12

Which level of protein structure is defined by the sequence of amino acids in a polypeptide?

Accepted Answer

Primary structure

Question 13

Which type of lipid is made of glycerol and three fatty acids held together by ester linkages?

Accepted Answer

Triglyceride

Question 14

Which nucleic acid acts as a messenger of genetic information?

Accepted Answer

RNA

Question 15

According to the modern cell theory, which statement is FALSE?

Accepted Answer

All cells have different structures

Question 16

Which organelle is the site of cellular respiration and produces ATP?

Accepted Answer

Mitochondrion

Question 17

A scientist dissolves table salt (NaCl) in water. What property of water allows the salt ions to be surrounded and separated?

Accepted Answer

Polarity of water molecules

Question 18

Which of the following best describes a polysaccharide?

Accepted Answer

A polymer made of hundreds of monosaccharides

Question 19

Which organelle is responsible for synthesizing proteins that will be exported from the cell?

Accepted Answer

Rough endoplasmic reticulum

Question 20

A mutation changes the number of neutrons in an atom but not the number of protons. What is the result?

Accepted Answer

An isotope is formed

General Biology: Foundations, Chemistry of Life, and Cell Structure

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