Q: Which equation best represents the flow of energy in photosynthesis?

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

Question 1

Which of the following best describes the overarching unifying theme in biology?

Accepted Answer

Evolution, which explains both the unity and diversity of life

Question 2

Which property is shared by all living organisms according to the definition provided in the study materials?

Accepted Answer

Capability for metabolism, reproduction, and evolution

Question 3

In the biological hierarchy, which level is the lowest that can perform all activities required for life?

Accepted Answer

Cell

Question 4

Which of the following is an example of negative feedback in biological systems?

Accepted Answer

Sweating to cool the body when temperature rises

Question 5

Which statement correctly explains how energy flows through an ecosystem?

Accepted Answer

Energy enters as sunlight, is transformed by organisms, and exits as heat

Question 6

Which of the following is NOT a characteristic of a good experimental design?

Accepted Answer

Changing multiple variables at once

Question 7

Which of the following best illustrates the relationship between structure and function in biology?

Accepted Answer

The shape of red blood cells allows them to efficiently transport oxygen

Question 8

Which domain includes organisms that are prokaryotic and often live in extreme environments?

Accepted Answer

Domain Archaea

Question 9

According to Darwin’s theory, what is the mechanism that explains how species adapt to their environment?

Accepted Answer

Natural selection

Question 10

Which of the following is a correct sequence of steps in the scientific method?

Accepted Answer

Observation → Hypothesis → Experiment → Evidence → Revise Hypothesis

Question 11

A scientist is testing the effect of a new drug on blood pressure. The group receiving the drug is called the:

Accepted Answer

Experimental group

Question 12

Which of the following is a standardized variable in an experiment testing plant growth under different light conditions?

Accepted Answer

Type of soil used for all plants

Question 13

Which equation best represents the flow of energy in photosynthesis?

Accepted Answer

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

Question 14

Which of the following best explains why DNA is considered the universal genetic language?

Accepted Answer

All organisms use DNA to store genetic information in the form of genes

Question 15

A population of beetles has a variety of colors. Birds preferentially eat the lighter-colored beetles. Over time, the population becomes mostly dark-colored. This is an example of:

Accepted Answer

Natural selection

Question 16

Which of the following is a correct statement about positive feedback?

Accepted Answer

It speeds up the process as more product accumulates

Question 17

Which of the following is NOT a domain of life?

Accepted Answer

Fungi

Question 18

Which of the following best describes the role of sample size in scientific experiments?

Accepted Answer

A larger sample size increases the reliability and validity of results

Question 19

Which of the following is an example of descent with modification?

Accepted Answer

A population of finches evolving different beak shapes to exploit new food sources

Question 20

Which of the following best explains why competition is inevitable in populations?

Accepted Answer

Resources are limited and more offspring are produced than can survive

Evolution, Themes of Biology, and Scientific Inquiry: Study Notes

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