Q: Which of the following equations correctly represents the hydrolysis of ATP?

$$ \mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy} $$

Question 1

Which of the following best illustrates the concept of emergent properties in biology?

Accepted Answer

A group of heart cells working together to pump blood, producing a function not seen in individual cells.

Question 2

A scientist observes that plants grow faster when exposed to blue light. She proposes that blue light increases the rate of photosynthesis. Which part of the scientific method is her proposal?

Accepted Answer

Hypothesis

Question 3

Which of the following statements about isotopes is correct?

Accepted Answer

Isotopes of an element have different numbers of neutrons.

Question 4

A student is asked to place the following in order from simplest to most complex: tissue, cell, organ, organism. Which is the correct order?

Accepted Answer

Cell → Tissue → Organ → Organism

Question 5

Which of the following best describes the difference between a hypothesis and a scientific theory?

Accepted Answer

A hypothesis is a testable statement, while a theory is a broad explanation supported by evidence.

Question 6

Which of the following is a correct example of deductive reasoning in biology?

Accepted Answer

Observing that all known birds have feathers and concluding that the next bird you see will have feathers.

Question 7

Which of the following statements about water is correct?

Accepted Answer

Hydrogen bonds between water molecules are responsible for water's high specific heat.

Question 8

A patient is given a radioactive isotope of iodine to diagnose thyroid function. Which property of isotopes makes this possible?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons, allowing some to be radioactive.

Question 9

Which of the following best explains why sweating cools the body?

Accepted Answer

Sweat absorbs heat as it evaporates due to water's high heat of vaporization.

Question 10

Which of the following equations correctly represents the hydrolysis of ATP?

Accepted Answer

$$ \mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy} $$

Question 11

Which of the following statements about carbon is most relevant to its role in biological molecules?

Accepted Answer

Carbon can form four covalent bonds, allowing for complex molecular structures.

Question 12

A researcher wants to test the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, the other does not. What is the independent variable in this experiment?

Accepted Answer

The type of fertilizer used.

Question 13

Which of the following best describes the difference between saturated and unsaturated fats?

Accepted Answer

Unsaturated fats have one or more double bonds in their fatty acid chains, causing kinks.

Question 14

Which of the following is NOT a correct statement about biological macromolecules?

Accepted Answer

Lipids are true polymers composed of repeating monomers.

Question 15

A patient with a fever is able to maintain a relatively stable internal temperature despite changes in the environment. Which biological principle does this illustrate?

Accepted Answer

Negative feedback regulation

Question 16

Which of the following best explains why ice floats on liquid water?

Accepted Answer

Hydrogen bonds in ice create a lattice that is less dense than liquid water.

Question 17

Which of the following is a correct comparison between DNA and RNA?

Accepted Answer

DNA is usually double-stranded, while RNA is usually single-stranded.

Question 18

Which of the following best describes the process of dehydration synthesis?

Accepted Answer

Building polymers from monomers by removing a molecule of water.

Question 19

A student claims that electrons contribute to the atomic mass of an atom. Which of the following equations correctly calculates atomic mass?

Accepted Answer

$$ 	ext{Atomic mass} = 	ext{Number of protons} + 	ext{Number of neutrons} $$

Question 20

Which of the following scenarios best demonstrates the application of systems biology?

Accepted Answer

Analyzing how multiple genes, proteins, and environmental factors interact to influence cell behavior.

Unit 1 Study Notes: Introduction to Biology & Chemistry of Life

Study Guide - Practice Questions

Study Guide - Flashcards