Short, noncoding, guanine-rich DNA sequences found at the ends of chromosomes are called telomeres

__________________ Indicate whether the statement is true or false.


True

Biology & Microbiology

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A muscle contraction always involves a decrease in the length of the muscle fiber

A. true B. false

Biology & Microbiology

How many different amino acids are there to choose from when assembling a protein?

A. 5 B. 10 C. 20 D. 25

Biology & Microbiology

A tube foot of a sea star moves when the small muscular bulb called the ____ contracts, forcing fluid into the tube foot

a. ampulla b. ossicle c. radial canal d. ring canal e. madreporite

Biology & Microbiology

The ____ is the developing gut for most animal embryos

a. schizocoelom b. mesoglea c. archenteron d. enterocoelom e. blastopore

Biology & Microbiology