alleryStart learning →Which cell would carry the greatest concentration of smooth endoplasmic reticulum?
AA cell that secretes enzymes outside
BA cell that destroys invading pathogens
CA cell that carries out photosynthesis
DA cell that makes steroid hormones
Answer & Solution
Correct answer: D. A cell that makes steroid hormones
1. The smooth ER synthesizes carbohydrates, lipids and steroid hormones.
2. It also detoxifies medications and poisons and stores calcium ions.
3. A cell whose main product is a steroid hormone therefore needs abundant smooth ER.
4. A cell that secretes enzymes needs abundant rough ER instead, because enzymes are proteins.
5. The steroid hormone producer carries the most smooth ER.
6. A pathogen-destroying cell leans on lysosomes and a photosynthetic cell on chloroplasts, so neither depends on smooth ER.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.4 The Endomembrane System and Proteins_
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