Which of the following statements relating to skeletal muscle and their functions is NOT correct?
A. Muscles that produce opposing actions at a joint are called antagonists.
B. Skeletal muscles are attached to bones by tendons.
C. The end of the muscle called the insertion is attached to the bone that moves when the muscle contracts.
D. The origin of a skeletal muscle remains relatively stationary.
E. Contraction of the hamstring muscles extends your knee.
E. Contraction of the hamstring muscles extends your knee.
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Which of the following is incorrect about archaeal translation?
A. Archaeal translation is coupled to transcription, similar to bacterial processes. B. Archaeal translation uses 70S ribosomes, similar to bacterial ribosomes. C. Archaeal translation may recognize ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. D. Archaeal translation uses no chaperone proteins for folding new polypeptides.
In the TCA cycle, two carbons in the form of ________ are added to oxaloacetate at the start of the cycle.
A. methanol B. acetyl-CoA C. ethanol D. carbon dioxide
The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the cell cycle where the red arrow is pointing?
A. CDK proteins are actively phosphorylating proteins that are involved in DNA replication.
B. CDK proteins are actively phosphorylating proteins that are responsible for assembling the mitotic spindle.
C. CDK proteins are actively phosphorylating and activating cyclins so that the cell will prepare to replicate its DNA.
D. CDK proteins are actively phosphorylating and activating cyclins so that the cell will properly assemble the spindle apparatus.
E. CDK proteins are actively phosphorylating regions of the DNA that need to be targeted for DNA repair.
Small and short-lived plants that rapidly colonize disturbed sites are classified by J. Phillip Grime as
A) C species. B) R species. C) S species. D) X species.