Biology Review Worksheet — True or False

Proteins can act as enzymes that help reactions happen faster.: True or False?

• True

• False

Answer explanation

True. Proteins, specifically enzymes, are biological catalysts that speed up chemical reactions in the body by lowering the activation energy required for the reaction to occur.

Carbohydrates give cells quick energy, like a fast snack.: True or False?

• True

• False

Answer explanation

True. Carbohydrates are the body's primary source of quick energy, providing fuel for cells much like a fast snack does.

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Nucleic acids (DNA and RNA) hold the instructions for the cell.: True or False?

• True

• False

Answer explanation

True. Nucleic acids, including DNA and RNA, contain the genetic instructions necessary for the growth, development, and functioning of living organisms.

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Prokaryotic cells have a nucleus.: True or False?

• True

• False

Answer explanation

Prokaryotic cells, such as bacteria, do not have a nucleus. Instead, their genetic material is located in a region called the nucleoid. Therefore, the statement is False.

Eukaryotic cells have many organelles that do different jobs.: True or False?

• True

• False

Answer explanation

True. Eukaryotic cells contain various organelles, such as the nucleus, mitochondria, and endoplasmic reticulum, each performing specific functions essential for the cell's survival and operation.

Photosynthesis lets plants use sunlight to make sugar.: True or False?

• True

• False

Answer explanation

True. Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen, making the statement accurate.

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Cellular respiration happens only in plants.: True or False?

• True

• False

Answer explanation

Cellular respiration occurs in both plants and animals, not just plants. It is a process that converts glucose and oxygen into energy, carbon dioxide, and water, essential for all living organisms.

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Natural selection helps organisms with helpful traits survive and have babies.: True or False?

• True

• False

Answer explanation

True. Natural selection favors organisms with beneficial traits, allowing them to survive longer and reproduce more, passing those traits to future generations.

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One organism can change its genes by trying hard.: True or False?

• True

• False

Answer explanation

The statement is False because organisms cannot change their genes simply by trying hard. Genetic changes occur through mutations, which are random and not influenced by an organism's effort or desire.

Mitosis helps your body grow and repair cells.: True or False?

• True

• False

Answer explanation

True. Mitosis is the process of cell division that allows your body to grow and repair by producing new cells, making it essential for growth and healing.

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