Biology Final Exam

What is the purpose of a line graph in science?

• To represent the relationship between two variables over time or continuous data.

• To show data distribution

• To compare data from experiments

• To show discrete data points

Tags

NGSS.MS-PS3-1

An abiotic part of an ecosystem; required by plants to perform photosynthesis.

• oxygen

• sunlight

• soil

• water

Answer explanation

Sunlight is an abiotic factor essential for photosynthesis in plants, as it provides the energy needed to convert carbon dioxide and water into glucose and oxygen.

Tags

NGSS.MS-LS1-6

Cells of organisms must replicate for ?

• repair of damaged cells

• replacement of dying cells.

• growth

• All of the above

Answer explanation

Cells must replicate for various reasons: to repair damaged cells, replace dying ones, and support growth. Therefore, the correct answer is 'All of the above' as all these processes require cell replication.

Tags

NGSS.MS-LS1-5

Chromatin refers to DNA that is...

• tightly bound into chromosome-like structures.

• old and needs to be dissolved.

• relaxed like a bowl of spaghetti.

• completely unwound and ready for replication.

Answer explanation

Chromatin is the relaxed form of DNA, resembling a bowl of spaghetti, allowing for gene expression and replication. In contrast, tightly bound DNA forms chromosomes during cell division.

When plants give off water vapor as a waste product, it is called:

• Photosynthesis

• Transpiration

• Respiration

• Germination

Answer explanation

When plants release water vapor, it is known as transpiration. This process helps regulate temperature and maintain water balance in plants, distinguishing it from photosynthesis, respiration, and germination.

What are the phases of mitosis IN ORDER?

• Prophase, Metaphase, Anaphase, Telophase

• Telophase, Prophase, Anaphase, Metaphase

• Metaphase, Anaphase, Prophase, Telophase

• Prophase, Metaphase, Telophase, Anaphase

Answer explanation

The correct order of the phases of mitosis is Prophase, Metaphase, Anaphase, and Telophase. This sequence is essential for proper cell division.

Cells spend the majority of their lives in

• Synthesis

• Gap 2

• Interphase

• Mitosis

Answer explanation

Cells spend most of their lives in interphase, which includes growth and DNA replication phases, rather than in mitosis or gap phases. Thus, interphase is the correct answer.

During which stage do clouds form?

• precipitation

• evaporation

• condensation

Answer explanation

Clouds form during the condensation stage when water vapor cools and changes back into liquid droplets, creating clouds. This process is essential in the water cycle, distinguishing it from evaporation and precipitation.

Tags

NGSS.MS-ESS2-4

All of the different populations that live in a specific area.

• habitat

• ecosystem

• village

• community

Answer explanation

A community refers to all the different populations living in a specific area, interacting with one another. In contrast, a habitat is the environment, and an ecosystem includes both living and non-living components.

Where does the energy start in this food chain?

• Plant

• Sun

• Wolf

• Deer

Answer explanation

The energy in a food chain starts with the Sun, which provides the light necessary for plants to perform photosynthesis. Plants then serve as the primary producers, converting solar energy into chemical energy.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3