The potato is a modified underground stem known as a tuber. It stores food (starch) and has 'eyes' which are actually axillary buds capable of growing into new plants. This distinguishes it from modified roots like sweet potatoes, which do not possess nodes, internodes, or buds.
Explanation:
Neisseria meningitidis (meningococcus) causes bacterial meningitis, an inflammation of the meninges. N. gonorrhoeae causes gonorrhea. Pneumonia is often Streptococcus pneumoniae.
Explanation:
The sarcoplasmic reticulum is a specialized smooth endoplasmic reticulum in muscle cells that stores and releases calcium ions, which trigger muscle contraction. Mitochondria produce ATP, Golgi processes proteins, nucleus controls gene expression.
Consider the following statements about the pancreas:
1. It has both endocrine and exocrine functions.
2. Alpha cells secrete insulin.
3. Beta cells secrete glucagon.
Which of the above is/are correct?
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