Honors Biology: Unit 2 Test Questions with Certified Solutions
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Honors Biology:
Institution
Honors Biology:
Honors Biology: Unit 2 Test Questions
with Certified Solutions
What is the role of the cytoskeleton in the cell?
The cytoskeleton provides structural support, helps maintain cell shape, and facilitates
movement of materials within the cell.
How do plant cells differ from animal cells in...
Honors Biology: Unit 2 Test Questions
with Certified Solutions
What is the role of the cytoskeleton in the cell?
✔✔ The cytoskeleton provides structural support, helps maintain cell shape, and facilitates
movement of materials within the cell.
How do plant cells differ from animal cells in terms of organelles?
✔✔ Plant cells have chloroplasts and a large central vacuole, while animal cells do not. Animal
cells have lysosomes, which are less common in plant cells.
What is the function of the vacuole in a plant cell?
✔✔ The vacuole stores nutrients, waste products, and helps maintain turgor pressure within the
plant cell.
How does active transport differ from passive transport?
✔✔ Active transport requires energy to move substances against their concentration gradient,
while passive transport does not require energy and moves substances along their concentration
gradient.
1
,What is the role of the cell wall in plant cells?
✔✔ The cell wall provides additional structural support and protection to the plant cell, helping
it maintain its shape.
How do enzymes speed up chemical reactions?
✔✔ Enzymes lower the activation energy required for a reaction to occur, increasing the reaction
rate.
What is the function of the plasma membrane’s lipid bilayer?
✔✔ The lipid bilayer acts as a barrier to control the movement of substances into and out of the
cell while allowing selective permeability.
What is the significance of the fluid mosaic model?
✔✔ The fluid mosaic model describes the cell membrane as a flexible, dynamic structure with
proteins and lipids that move laterally within the bilayer.
How do cellular junctions contribute to tissue function?
2
, ✔✔ Cellular junctions connect cells to each other, allowing communication and coordination
between cells in tissues.
What is the main purpose of cellular respiration?
✔✔ The main purpose of cellular respiration is to produce ATP, which provides energy for
cellular processes.
What is the function of the cell nucleus?
✔✔ The cell nucleus houses the cell’s DNA and controls gene expression and cell activities.
How does the structure of the cell membrane contribute to its function?
✔✔ The cell membrane’s phospholipid bilayer and embedded proteins allow selective
permeability, controlling what enters and exits the cell.
What role do mitochondria play in cellular processes?
✔✔ Mitochondria produce ATP through cellular respiration, providing energy for various
cellular functions.
How do ribosomes contribute to protein synthesis?
3
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