Which of the following molecule(s) exhibits self-splicing?

A. rRNA
B. tRNA
C. mRNA
D. rRNA and tRNA
E. rRNA and mRNA


D. rRNA and tRNA

Biology & Microbiology

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Milk is a type of protein, and within mammalian cells, these proteins are transported in

spherical organelles called __________.

a. vesicles b. Golgi complexes c. lysosomes d. mitochondria

Biology & Microbiology

Decomposing organic material that releases nutrients that are used by plants is called ____

a. humus b. loam c. silt d. bedrock e. a macronutrient

Biology & Microbiology

If a fetus contains an X and a Y chromosome but a defective SRY gene, they will develop

A. into an anatomical male because testosterone is present. B. into a hermaphrodite due to the presence of estrogen and testosterone. C. into an anatomical female because testosterone is not present. D. into an anatomical female because testosterone is present. E. into an anatomical male because testosterone is not present.

Biology & Microbiology

Which structure containing dense connective tissue is found in the skin?

A) epidermis B) hypodermis C) dermis D) integument

Biology & Microbiology