Although they have a diversity of structures, all members of this group of organic molecules are

primarily nonpolar and thus water-insoluble.



a. proteins
b. lipids
c. nucleic acids
d. carbohydrates
e. amino acids


B

Biology & Microbiology

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This phylum of nonvascular plants has about 100 known living species. They produce hornlike

sporophytes, and they are the only land plants whose chloroplasts contain alga-like protein bodies called pyrenoids.

a. Hepatophyta b. Pterophyta c. Bryophyta d. Lycophyta e. Anthocerophyta

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Which one of the following organelles is involved in the production of proteins that are exported from the cell?

A) rough endoplasmic reticulum B) lysosome C) mitochondrion D) smooth endoplasmic reticulum E) centriole

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The peripheral nervous system consists of the brain and spinal cord

Indicate whether the statement is true or false

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All of the following are protective factors of the skin and its secretions EXCEPT

A) keratin. B) tightly packed cells. C) lysozyme production. D) pyocyanin production. E) salt.

Biology & Microbiology