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Plant Root Cells and Xylem Cell Functions

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Plant Root Cells and Xylem Cell Functions

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Questions and Answers

What is the main function of the permanent vacuole in plant cells?

Synthesizes proteins

Improves cell's rigidity (correct)

Transports genetic material

Aids in cellular respiration

What is the compound that makes up the cell wall of plant cells?

Peptidoglycan

Cholesterol

Starch

Cellulose (correct)

In bacterial cells, what is the function of plasmids?

Synthesize ATP

Code for extra genes beyond chromosomal DNA (correct)

Store water and nutrients

Facilitate cell division

Which type of cells have the ability to differentiate throughout their whole life?

Stem cells Signup and view all the answers

What is the key process that allows cells to specialize by gaining new sub-cellular structures?

Differentiation Signup and view all the answers

What is the main function of flagella in bacterial cells?

Allow bacteria to move Signup and view all the answers

What type of cells are animal and plant cells?

Eukaryotic Signup and view all the answers

Which organelle is found in eukaryotic cells but not in prokaryotic cells?

Mitochondria Signup and view all the answers

What is the main function of enzymes in biological systems?

Speed up chemical reactions Signup and view all the answers

In an enzyme-catalyzed reaction, what happens to the rate of reaction when the enzyme concentration is increased?

Rate increases Signup and view all the answers

Which process is responsible for the movement of molecules across a cell membrane, from an area of low concentration to an area of high concentration?

Active transport Signup and view all the answers

What is a common method used to investigate osmosis in plant cells?

Core Practical - Investigating Biological Specimens Signup and view all the answers

What is the main function of root hair cells?

To take up water by osmosis and mineral ions by active transport from the soil Signup and view all the answers

What is the role of mitochondria in root hair cells?

To provide energy from respiration for active transport of mineral ions into the cell Signup and view all the answers

What is the purpose of lignin deposition in xylem cells?

To facilitate water and mineral movement by causing cell death and creating hollow tubes Signup and view all the answers

What is the main function of phloem cells in plants?

To transport the products of photosynthesis to all parts of the plant Signup and view all the answers

What is the function of sieve plates in phloem cells?

To allow movement of substances from cell to cell when they break down Signup and view all the answers

Why are microscopes necessary to observe extremely small structures like cells?

To enlarge the image for visibility Signup and view all the answers