Q: Which of the following equations correctly represents photosynthesis in producers?

$$\text{CO}_2 + \text{H}_2\text{O} + \text{light energy} \rightarrow \text{Carbohydrate (food)} + \text{O}_2$$

Question 1

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

Accepted Answer

A theory is a broad framework supported by evidence, while a hypothesis is a testable prediction based on observations.

Question 2

Which of the following is NOT a characteristic shared by all living things?

Accepted Answer

Presence of a cell wall

Question 3

A scientist observes that all swans she has seen are white. She concludes that all swans are white. This is an example of:

Accepted Answer

Inductive reasoning

Question 4

In a controlled experiment testing the effect of a new drug, which group receives the drug?

Accepted Answer

Experimental group

Question 5

Which of the following best explains why scientific models can never be proven true?

Accepted Answer

Because new evidence can always lead to revision or rejection of models

Question 6

Which of the following is the correct order of biological organization from smallest to largest?

Accepted Answer

Molecule → Organelle → Cell → Tissue → Organ → Organ System → Organism

Question 7

Which domain includes organisms that are typically found in extreme environments and are distinguished by their ribosomal RNA sequences?

Accepted Answer

Domain Archaea

Question 8

A student claims that eating carrots improves night vision because her grandmother eats carrots and has good eyesight. What error in scientific reasoning is this?

Accepted Answer

Confusing correlation with causation

Question 9

Which of the following equations correctly represents photosynthesis in producers?

Accepted Answer

$$	ext{CO}_2 + 	ext{H}_2	ext{O} + 	ext{light energy} ightarrow 	ext{Carbohydrate (food)} + 	ext{O}_2$$

Question 10

Which kingdom within Domain Eukarya contains organisms with cell walls made of chitin and are mostly decomposers?

Accepted Answer

Kingdom Fungi

Question 11

Which of the following is the correct format for writing a species name according to binomial nomenclature?

Accepted Answer

Homo sapiens

Question 12

Which of the following statements about metabolism is TRUE?

Accepted Answer

Metabolism is the sum of all chemical reactions and energy transformations in a cell.

Question 13

Which of the following is a function of decomposers in an ecosystem?

Accepted Answer

Breaking down dead bodies and recycling nutrients

Question 14

A researcher wants to test if a new fertilizer increases plant growth. She sets up two groups: one receives the fertilizer, the other does not. What is the purpose of the control group?

Accepted Answer

To provide a baseline for comparison to the experimental group

Question 15

Which of the following is an example of heritable information transfer in living systems?

Accepted Answer

DNA passed from parent to offspring

Question 16

Which of the following is the highest level of taxonomic classification in the modern system?

Accepted Answer

Domain

Question 17

Which of the following is a unifying theme in biology that explains the diversity and unity of life?

Accepted Answer

Evolution

Question 18

Which of the following statements about the scientific method is correct?

Accepted Answer

It relies on testable predictions and can only support or disprove hypotheses.

Question 19

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

Accepted Answer

All mammals have hair. Whales are mammals. Therefore, whales have hair.

Question 20

Which of the following best describes the role of producers in an ecosystem?

Accepted Answer

They manufacture their own food from simple materials, usually via photosynthesis.

Principles of Biology: Scientific Method, Reasoning, and Characteristics of Life

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