Protein Function And Evolution - Biochemistry Concepts and Connections | Biology+

Course

Biochemistry

Study Pack

Set 1: Biochemistry and the Language of Chemistry

Set 2: The Chemical Foundation of Life: Weak Interactions in an Aqueous Environment

Set 3: The Energetics of Life

Set 4: Nucleic Acids

Set 5: Introduction to Proteins: the Primary Level of Protein Structure

Set 6: The Three-Dimensional Structure of Proteins

Set 7: Protein Function and Evolution

Set 8: Enzymes: Biological Catalysts

Set 9: Carbohydrates: Sugars, Saccharides, Glycans

Set 10: Lipids, Membranes, and Cellular Transport

Set 11: Chemical Logic of Metabolism

Set 12: Carbohydrate Metabolism: Glycolysis, Gluconeogenesis, Glycogen Metabolism, and the Pentose Phosphate Pathway

Set 13: The Citric Acid Cycle

Set 14: Electron Transport, Oxidative Phosphorylation, and Oxygen Metabolism

Set 15: Photosynthesis

Set 16: Lipid Metabolism

Set 17: Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Set 18: Amino Acid and Nitrogen Metabolism

Set 19: Nucleotide Metabolism

Set 20: Mechanisms of Signal Transduction

Set 21: Genes, Genomes, and Chromosomes

Set 22: DNA Replication

Set 23: DNA Repair, Recombination, and Rearrangement

Set 24: Transcription and Post-Transcriptional Processing

Set 25: Information Decoding: Translation and Post-Translational Protein Processing

Set 26: Regulation of Gene Expression

Set 7 Protein Function And Evolution

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Set 7 Protein Function And Evolution

(Multiple Choice)

Free

The most critical substance in stimulating muscle contraction is:

A) ATP.
B) Ca2+.
C) tropomyosin.
D) troponin C.
E) troponin T.

Answer

(Multiple Choice)

Free

Which of the following statements about muscle contraction is TRUE?

A) ATP hydrolysis releases myosin from actin.
B) ATP hydrolysis results in strong binding of myosin to actin.
C) ATP hydrolysis causes a conformational change in the myosin head.
D) Muscle contraction occurs as ATP is hydrolyzed.
E) ATP hydrolysis must occur before the actin-binding site closes.

Answer

(True False)

Free

Comparison of globin sequences from many different species suggests that myoglobin and hemoglobin have evolved from a single myoglobin-like protein.

Answer