Q: Which equation best represents the process of cellular respiration, a metabolic pathway essential for obtaining and using energy in living organisms?

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy}$$

Question 1

Which of the following is NOT one of the eight universally accepted characteristics of life?

Accepted Answer

Ability to photosynthesize

Question 2

A scientist discovers a new organism that is made of a single cell, can reproduce, responds to stimuli, and maintains homeostasis. Which additional characteristic must be present for it to be considered alive according to the eight characteristics of life?

Accepted Answer

Universal genetic code

Question 3

Which equation best represents the process of cellular respiration, a metabolic pathway essential for obtaining and using energy in living organisms?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy}$$

Question 4

Which of the following best explains why viruses are not classified as living organisms?

Accepted Answer

They cannot reproduce independently without a host cell

Question 5

Homeostasis is crucial for life because it allows organisms to:

Accepted Answer

Maintain a constant internal environment despite external changes

Question 6

Which of the following statements about cell theory is FALSE?

Accepted Answer

Only multicellular organisms are made of cells

Question 7

A multicellular organism is able to maintain homeostasis more efficiently than a unicellular organism because:

Accepted Answer

Its specialized cells can perform specific functions

Question 8

Which of the following is the correct hierarchical organization of multicellular organisms from simplest to most complex?

Accepted Answer

Cell → Tissue → Organ → Organ system

Question 9

Which domain includes organisms that lack a nucleus and can survive in extreme environments?

Accepted Answer

Archaea

Question 10

A student claims that a rock is alive because it can change temperature when exposed to sunlight. Which characteristic of life does this claim fail to address?

Accepted Answer

Cellular organization

Question 11

Which kingdom contains organisms that are eukaryotic, mostly multicellular, and obtain energy by absorbing nutrients from other organisms?

Accepted Answer

Fungi

Question 12

Which of the following best describes the process of adaptation through evolution?

Accepted Answer

Populations of organisms acquire beneficial traits over generations

Question 13

Which of the following is a real-world example of homeostasis in humans?

Accepted Answer

Sweating to cool the body when overheated

Question 14

Which of the following is a correct application of classification criteria for the three domains of life?

Accepted Answer

A halophilic microbe is classified in the domain Archaea

Question 15

Which of the following scenarios best demonstrates the characteristic of responsiveness in living organisms?

Accepted Answer

A plant bending toward a light source

Question 16

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles, prokaryotic cells do not

Question 17

Which of the following is an example of metabolism in living organisms?

Accepted Answer

A plant converting sunlight into chemical energy through photosynthesis

Question 18

Which of the following best explains why specialization of cells is important in multicellular organisms?

Accepted Answer

It enables different cells to perform specific tasks necessary for survival

Question 19

A scientist is investigating whether a newly discovered entity is alive. It contains DNA, can reproduce only inside host cells, and does not carry out metabolism independently. Based on the characteristics of life, how should the scientist classify this entity?

Accepted Answer

As a virus

Question 20

Which of the following best illustrates the concept of growth and development in living organisms?

Accepted Answer

A caterpillar transforming into a butterfly

Nature of Science: Characteristics of Life (Unit 1 - Lesson 3)

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