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Lostsunrise [7]
3 years ago
14

Strolling in the Sonoran Desert, you come upon a stately Saguaro cactus. The large central "trunks" of this cactus are covered w

ith umber's smaller spines. The central stalks are modified _____ used for water storage & spines are modified ______ used for protection.
a) stems; leaves
b) leaves; leaves
c) petioles; leaf blades
d) leaf blades; trichomes
e) stems;fruits
Biology
1 answer:
stellarik [79]3 years ago
4 0

Answer:

a) stems; leaves

Strolling in the Sonoran Desert, you come upon a stately Saguaro cactus. The large central "trunks" of this cactus are covered with umber's smaller spines. The central stalks are modified <u>stems</u> used for water storage & spines are modified <u>leaves</u> used for protection

Explanation:

The saguaro cactus can only grow in Sonoran desert. It is a ver slow growing plant but can grow to 60ft tall. The plant has long spikes like leafs and grows a bell shaped white flower. The central stalks are modified stems and the roots can be pounded and soaked then used to make shampoo.

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The endoplasmic reticulum is a membrane system within the cytoplasm that extends from the outer nuclear membrane. Apart from increasing the surface area within the cell, this continuous system also carries out protein folding, synthesis and transport. In the endoplasmic reticulum or ER, some sections called the smooth ER, do not contain ribosomes, and may contain lipids, enzymes, and other proteins. Other sections bound to ribosomes, are called the rough Er. As a protein destined for the endomembrane system is being synthesized by a ribosome, the first amino acids in the growing polypeptide chain act as a signal sequence. That signal sequence ensures that the ribosome binds to the outer membrane of the ER and that the protein enters the ER lumen. The proteins undergo major modifications and are packed into vesicles.

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