Grade 9 Biology Trivia

Reviewed by Stephen Reinbold
Stephen Reinbold, PhD, Biological Sciences |
Biology Expert
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Stephen Reinbold has a Ph.D. in Biological Sciences with a particular interest in teaching. He taught General Biology, Environmental Science, Zoology, Genetics, and Anatomy & Physiology for almost thirty years at Metropolitan Community College in Kansas City, Missouri. He particularly enjoyed emphasizing scientific methodology and student research projects. Now, enjoying retirement, he works part-time as an editor while also engaging in online activities.
, PhD, Biological Sciences
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Quizzes Created: 1 | Total Attempts: 43,246
Questions: 10 | Viewed: 43,267

1.

Biology is the study of:

Answer: Life
Explanation:
Biology is the study of life, encompassing the examination of living organisms, their structure, function, growth, evolution, and distribution. It focuses on understanding the various processes and systems that occur within living organisms, including their interactions with the environment. Therefore, the correct answer is "life" because biology is specifically concerned with the study of living things.
2.

The 'photo' in photosynthesis means....

Answer: Light
Explanation:
In photosynthesis, the term "photo" is derived from the Greek word for light. Photosynthesis is a complex process carried out by plants, algae, and certain bacteria, where light energy is captured and utilized to convert carbon dioxide and water into glucose and oxygen. Light plays a central role in the initial phase, where pigments such as chlorophyll absorb light energy during the photochemical reactions, initiating the conversion of light energy into chemical energy stored in glucose molecules. The prefix "photo-" in photosynthesis emphasizes the essential role of light in driving this vital biological process.
3.

What is the function of root hair cells?

Answer: To absorb water and minerals/nutrients.
Explanation:
Root hair cells are specialized cells found in the root system of plants. Their main function is to absorb water and minerals/nutrients from the soil. These cells have long, thin projections called root hairs that increase the surface area for absorption. They have a large number of transport proteins in their cell membranes that facilitate the uptake of water and nutrients. Therefore, the correct answer is "To absorb water and minerals/nutrients."
4.

Plants contain vascular bundles, which are similar to human veins and arteries. These bundles have two types of vascular tissues, one that carries water and another that carries glucose solution. What are these two types of vascular tissues?

Answer: Phloem and xylem
Explanation:
Plants contain vascular bundles, which are similar to human veins and arteries. These vascular bundles contain two things: one is responsible for carrying water, and the other is responsible for carrying a glucose solution. The two things referred to in the question are phloem and xylem. Phloem is the tissue responsible for transporting the glucose solution, while xylem is responsible for transporting water.
5.

Where does photosynthesis take place in plants?

Answer: Chloroplasts
Explanation:
Photosynthesis is the process by which plants convert sunlight into energy. It occurs in the chloroplasts, which contain chlorophyll, the pigment responsible for capturing sunlight. The chloroplasts are found in the cells of the plant's leaves, where they absorb light energy and use it to convert carbon dioxide and water into glucose and oxygen. The nucleus is responsible for controlling the cell's activities, the vacuole stores water and other substances, and the mitochondria produce energy through cellular respiration. Therefore, the correct answer is chloroplasts/chlorophyll.
6.

DNA carries the instructions for an organism to grow. DNA stands for.....

Answer: Deoxyribonucleic acid
Explanation:
DNA stands for Deoxyribonucleic acid. It is a molecule that carries the genetic instructions for the growth, development, functioning, and reproduction of all known organisms. It is composed of two long chains of nucleotides that are twisted into a double helix structure. The nucleotides in DNA contain a sugar called deoxyribose, hence the name Deoxyribonucleic acid. This molecule is essential for the storage and transmission of genetic information from one generation to the next.
7.

What are the four bases that make up the code for DNA?

Answer: T, A, G, and C
Explanation:
The four bases that make up the code for DNA are T, A, G, and C. These bases are the building blocks of DNA and are responsible for carrying the genetic information. T (thymine) pairs with A (adenine), and G (guanine) pairs with C (cytosine) to form the double helix structure of DNA. These base pairs determine the genetic code and are essential for DNA replication and protein synthesis.
8.

DNA code tells the cell how to make...

Answer: Protein
Explanation:
The DNA code contains instructions that guide the cell in making proteins. Proteins are essential molecules that perform various functions in the body, such as building and repairing tissues, regulating chemical reactions, and supporting the immune system. DNA is transcribed into RNA, which is then translated into proteins through a process called protein synthesis. Therefore, the correct answer is protein.
9.

Which part of the cell is responsible for controlling cell activities and contains genetic material?

Answer: Nucleus
Explanation:
The nucleus is the control center of a cell, housing the cell’s genetic material (DNA). It is surrounded by a double membrane called the nuclear envelope, which protects the DNA and regulates what enters and exits the nucleus. The nucleus orchestrates cell activities by directing protein synthesis and cell division. It contains the nucleolus, where ribosomal RNA is produced. Understanding the nucleus is essential for grasping how cells function, replicate, and respond to their environment. It plays a critical role in heredity and the regulation of cellular processes.
10.

Which type of biomolecule is primarily used for long-term energy storage in the body?

Answer: Lipids
Explanation:
Lipids are biomolecules primarily used for long-term energy storage in the body. They are fats and oils, composed mainly of fatty acids and glycerol. Lipids store more energy per gram than carbohydrates or proteins, making them efficient for long-term energy reserves. They also play vital roles in forming cell membranes, providing insulation, and protecting organs. Understanding lipids is crucial in biology because they are essential for energy balance, cellular structure, and metabolic processes. Their unique properties make them a key component in the storage and utilization of energy within the body.
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