In most animals, the sperm and egg contribute an equal __________ to the zygote
a. amount of cytoplasm
b. number of chromosomes
c. number of enzymes
d. number of mitochondria
e. number of ribosomes
B
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Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the:
A. cytoplasm. B. nucleus. C. plasma membrane. D. cytoskeleton.
The enzyme found in tears that can digest bacterial cell walls is called:a
protease. b. lysozyme. c. interferon. d. cytokine. e. defensin
Most eukaryotes have between ________ chromosomes in their body cells.
A. 100 and 200 B. 1 and 15 C. 200 and 300 D. 10 and 50 E. 350 and 500
Low-nutrient, oligotrophic waters will usually become stratified and have an anaerobic hypolimnion at certain times of the year.
Answer the following statement true (T) or false (F)