Where are introns removed from pre-mRNA in eukaryotes?
a. ribosomes
b. the cytoplasm
c. the nucleus
d. lysosomes
c. the nucleus
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Which of the following levels of ecological organization is arranged in the correct sequence from most to least inclusive?
A) community, ecosystem, organism, population B) ecosystem, community, population, organism C) population, ecosystem, organism, community D) organism, population, community, ecosystem E) organism, community, population, ecosystem
Bites by little children typically cause few problems
Indicate whether this statement is TRUE or FALSE.
In spermatogenesis, ________.
A. diploid gametes are produced B. both sperms and ovules are produced C. haploid sperms are produced D. diploid sperms are produced
Which of the following is a function of the excretory system?
a. elimination of nitrogenous wastes b. maintenance of salt balance c. production of urine d. maintenance of the water balance e. All of the listed responses are correct.