Q: Which equation best represents the transformation of energy in most ecosystems?

$$\text{Light energy} \rightarrow \text{Chemical energy} \rightarrow \text{Heat}$$

Question 1

Which of the following is considered the smallest unit of life that can perform all the activities required for life?

Accepted Answer

A cell

Question 2

A scientist observes that a new plant bends toward sunlight streaming into a room. Which characteristic of living things does this best illustrate?

Accepted Answer

Response to the environment

Question 3

Which domain includes organisms that often live in extreme environments, such as hot springs and salty lakes?

Accepted Answer

Archaea

Question 4

In most ecosystems, energy enters as light and exits as heat. Which group is primarily responsible for cycling matter back into the ecosystem?

Accepted Answer

Decomposers

Question 5

Which statement best describes an emergent property in biological systems?

Accepted Answer

A property that arises from the arrangement and interaction of parts within a system

Question 6

A researcher hypothesizes that mice fed spinach will develop stronger hamstring muscles. She feeds one group spinach and another group regular diet, both with access to running wheels. After 6 weeks, she measures hamstring strength. What is the dependent variable in this experiment?

Accepted Answer

Hamstring strength

Question 7

Which of the following is a defining characteristic of Kingdom Plantae?

Accepted Answer

Members produce their own food by photosynthesis

Question 8

Which taxonomic rank comes immediately after genus in the hierarchy?

Accepted Answer

Species

Question 9

Which of the following INCORRECTLY pairs a listed organism and its domain?

Accepted Answer

An organism living in a boiling hot spring belongs to the domain Bacteria

Question 10

In the hierarchy of biological organization, which level directly precedes organs?

Accepted Answer

Tissues

Question 11

Which of the following is an example of a scientific theory?

Accepted Answer

The theory of evolution by natural selection explaining biological diversity

Question 12

Which of the following statements about scientific hypotheses is correct?

Accepted Answer

A hypothesis is a proposed explanation for a set of observations that can be tested

Question 13

After a person eats dinner, which of the following occurs to regulate blood glucose levels?

Accepted Answer

The concentration of glucose in the blood increases, causing the pancreas to release insulin, which allows glucose to enter cells, thereby lowering blood glucose

Question 14

Which of the following is a unifying theme in biology that explains the diversity of life and adaptation of organisms over time?

Accepted Answer

Evolution

Question 15

A segment of DNA is transcribed to RNA, which is then translated into a chain of molecules that make up a protein. Which process does this describe?

Accepted Answer

Gene expression

Question 16

Which level of biological organization involves interactions between different species within a specific area?

Accepted Answer

Community

Question 17

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

Accepted Answer

They return chemicals to the soil by breaking down organic matter

Question 18

Which of the following is a property common to all living organisms?

Accepted Answer

They are composed of cells

Question 19

Which equation best represents the transformation of energy in most ecosystems?

Accepted Answer

$$	ext{Light energy} ightarrow 	ext{Chemical energy} ightarrow 	ext{Heat}$$

Question 20

Which of the following types of data involves numerical measurements?

Accepted Answer

Quantitative data

Foundations of General Biology: Life, Organization, and Scientific Inquiry

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