Question 1

Which of the following best describes the correct order of biological organization from least inclusive to most inclusive?

Accepted Answer

molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem

Question 2

A solution with a pH of 12 is ______ and has a ______ concentration of hydroxyl ions than hydrogen ions.

Accepted Answer

basic, greater

Question 3

Which of the following statements about carbon is false?

Accepted Answer

Carbon has the ability to bond with up to six other atoms.

Question 4

Which of the following statements regarding nucleotides is false?

Accepted Answer

Nucleotides contain lipids.

Question 5

Which of the following best describes the atomic number of an atom?

Accepted Answer

the number of protons in the atom

Question 6

Which of the following statements about dehydration synthesis is false?

Accepted Answer

$$\mathrm{H_2O} is $$taken up to make the covalent bond between two monomers.

Question 7

Which of the following molecules is composed of one glycerol molecule linked to one phosphate group and two fatty acids?

Accepted Answer

one glycerol molecule linked to one phosphate group and two fatty acids

Question 8

Which of the following statements about mitochondria is true?

Accepted Answer

They function in cellular respiration.

Question 9

Which of the following statements about passive transport is true for all types?

Accepted Answer

The concentration gradient is the driving force.

Question 10

Which of the following statements regarding the oxygen atom of a water molecule is true?

Accepted Answer

Oxygen attracts electrons more strongly than the hydrogen atoms.

Question 11

Which of the following best describes a hypothesis?

Accepted Answer

a proposed explanation for a set of observations

Question 12

Which of the following is a hydroxyl group?

Accepted Answer

$$-\mathrm{OH}$$

Question 13

Which of the following statements about thermodynamics is correct?

Accepted Answer

An automobile engine is a closed system because it does not exchange energy and matter with its surroundings.

Question 14

Which of the following sequences best describes a primary path by which electrons travel downhill energetically during aerobic respiration?

Accepted Answer

glucose $$\rightarrow$$ NADH $$\rightarrow$$ electron transport chain $$\rightarrow$$ oxygen

Question 15

Which of the following statements about the structure of the plasma membrane is correct?

Accepted Answer

The phospholipid heads are hydrophilic and face outward toward the aqueous solution on both sides of the membrane.

Question 16

Which of the following is a real-world example of a covalent bond?

Accepted Answer

The bond between two hydrogen atoms in a hydrogen gas molecule ($$\mathrm{H_2$})$$

Question 17

Which of the following best explains why fats are hydrophobic?

Accepted Answer

Fats have nonpolar hydrocarbon chains.

Question 18

Which of the following statements about enzyme catalysis is correct?

Accepted Answer

It lowers the activation energy of the reaction.

Question 19

Which of the following molecules may be metabolized by yeast cells in the absence of oxygen to produce ATP from ADP?

Accepted Answer

glucose

Question 20

Which of the following best describes the role of mitochondria in eukaryotic cells?

Accepted Answer

They are the site of cellular respiration.

General Biology: Core Concepts and Practice Questions

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