The organelle that best enables an athlete's tissues to be metabolically active are

A. ribosomes.
B. lysosomes.
C. smooth endoplasmic reticulum.
D. mitochondria.
E. contractile vacuoles.


D. mitochondria.

Biology & Microbiology

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Which compound in fertilizer do farmers use to inhibit the production of easily leached nitrogen compounds?

A) anhydrous ammonia B) carbonate C) nitrapyrin D) nitrate

Biology & Microbiology

Comparing a single-celled eukaryotic organism with a multicellular organism such as yourself identify the major difference from the list below.

a. Escape from predator b. Finding a mate c. Division of labor d. Find its own food e. Nucleus

Biology & Microbiology

Two major types of symmetry found in viruses include ________.

A. icosahedral and helical B. helical and radial C. icosahedral and radial D. radial and bilateral

Biology & Microbiology

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species

composition and structure of most communities.

a. communities b. K-selected species c. r-selected species d. predators e. prey species

Biology & Microbiology