Honors Bio S1 Exam Review

Front

Plant cells thrive in ____ solutions.

Back

hypotonic solutions are ideal for plant cells as they allow water to enter the cell, creating turgor pressure that keeps the plant upright.

Front

In the orbitals surrounding an atom, you will find ____.

Back

electrons are found in the orbitals surrounding an atom, while protons and neutrons are located in the nucleus.

Front

_____ is a molecule that carries high energy electrons that will go on to be used to make sugars.

Back

NADPH is a crucial molecule in photosynthesis, providing the high-energy electrons needed for the synthesis of glucose.

Front

This enzyme functions best at ____ degrees Celsius.

Back

40 degrees Celsius is the optimal temperature for this enzyme, where it exhibits maximum activity.

Front

____ is the term for water evaporating from plants.

Back

Transpiration is the process by which water vapor is released from plant leaves into the atmosphere.

Front

What is the role of NADPH in photosynthesis?

Back

NADPH provides the reducing power for the conversion of carbon dioxide into glucose during the Calvin cycle.

Front

Define isotonic solution.

Back

An isotonic solution has the same solute concentration as another solution, resulting in no net movement of water across the cell membrane.

Front

What happens to a plant cell in a hypertonic solution?

Back

In a hypertonic solution, water leaves the plant cell, causing it to shrink and lose turgor pressure.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as catalysts, speeding up chemical reactions by lowering the activation energy required.

Front

What is transpiration's significance in plants?

Back

Transpiration helps in nutrient uptake, cooling the plant, and maintaining turgor pressure.