The sedimentary rock known as ________ stores carbon deposited by the shells of ocean animals

Fill in the blank(s) with correct word


limestone

Biology & Microbiology

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A defining characteristic of eukaryotic organisms is that they  

A.  have their transcription occurring in the cytoplasm and translation in the nucleus. B.  have their transcription occurring in the nucleus and translation in the cytoplasm. C.  have only operons to assist in gene expression. D.  carry out protein synthesis only in the presence of the cAMP molecule. E.  use the leucine zipper primarily for the production of the amino acid tryptophan.

Biology & Microbiology

Why do prokaryotes not conduct the process of the citric acid cycle?

a. They do not possess mitochondria. b. They do not possess a cytoplasm. c. They do not possess a Golgi body. d. They do conduct the citric acid cycle.

Biology & Microbiology

All EXCEPT which of the following are associated

with sclerenchyma? a. lignin b. photosynthesis c. transport d. sclereids e. fibers

Biology & Microbiology

A recent study of the marine hawksbill turtles' stomach contents revealed that sponges constitute a major portion of their diet. Sponge beds are generally protected from predators by their calcium and silica crystals, but these were found in the turtles' digestive systems. These protective structures are called

A. osculum. B. spicules. C. amoebocytes. D. spongin. E. choanocytes.

Biology & Microbiology