Multiple Choice
Which biomolecule is the primary source of energy in the human diet?
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4. Biomolecules
Carbohydrates
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following types of plant cells primarily transport sugars over long distances?
A
Tracheids
B
Parenchyma cells
C
Guard cells
D
Sieve tube elements
Verified step by step guidance1
Understand the function of sieve tube elements: These are specialized cells in the phloem of vascular plants responsible for transporting sugars and other organic nutrients over long distances.
Recognize the structure of sieve tube elements: They are elongated cells that form a continuous column, allowing for efficient transport of nutrients through the plant.
Differentiate sieve tube elements from other plant cells: Unlike tracheids, which are involved in water transport, sieve tube elements are specifically adapted for sugar transport.
Consider the role of companion cells: Sieve tube elements are closely associated with companion cells, which help maintain the function and health of the sieve tube elements.
Review the process of translocation: This is the movement of sugars from the leaves, where they are produced during photosynthesis, to other parts of the plant, facilitated by sieve tube elements.
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