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College Biology Questions

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College Evolution
College Biochemical Pathways
The third stage of glucose oxidation is called                          .
  1. intermediate stage
  2. glycolysis
  3. citric acid cycle
  4. electron transport system
College Macromolecules
What is the most common element in the human body by mass?
  1. Calcium
  2. hydrogen
  3. carbon
  4. oxygen
  5. nitrogen
College Biochemical Pathways
What is the final stage of glucose oxidation?
  1. intermediate stage
  2. glycolysis
  3. citric acid cycle
  4. electron transport system
College Biochemical Pathways
College Nervous and Endocrine Systems
College Biochemical Pathways
What is the molecule that enters the citric acid cycle?
  1. pyruvic acid
  2. lactic acid
  3. citric acid
  4. acetyl coenzyme A
College Nervous and Endocrine Systems
College Biology
Why does oxygen move from blood into the interestial fluid and then to the body cells?
  1. It diffuses from a region of higher partial pressure to a region of lower partial pressure
  2. it diffuses from a region of lower partial pressure to a region of higher partial pressure
  3. it descends down an osmotic gradient following the movement of water
College Macromolecules
What forms the sugar/phosphate backbone of each strand of DNA?
  1. Phosphodiester covalent bonds
  2. Hydroxyldiester covalent bonds
  3. Manganesdiester covalent bonds
  4. Carbodiester covalent bonds
College DNA, RNA, and Genetics
In eukaryotic cells, transcription cannot begin until what occurs?
  1. the two DNA strands have completely separated and exposed the promoter
  2. several transcription factors have bound to the promoter
  3. the 5' caps are removed from the mRNA
  4. the DNA introns are removed from the template
College DNA, RNA, and Genetics
In a nucleosome, what is the DNA wrapped around?
  1. histones
  2. ribosomes
  3. polymerase molecules
  4. a thymine dimer
College Skin, Skeleton, and Muscles
Which muscle has its insertion at the xiphoid process and linea alba?
  1. Interior Abdominal Oblique
  2. Transversalis
  3. Rectus
  4. External Abdominal Oblique
College Circulatory and Immune Systems
College Biochemical Pathways
The loss of an electron is involved in                         .
  1. Phosphorylation
  2. Reduction
  3. Electron transport chain
  4. Oxidation
College Respiration, Digestion, and Excretion
Which of these is the voluntary sphincter controlled by somatic nervous system?
  1. internal urethral sphincter
  2. external urethral sphincter
College DNA, RNA, and Genetics
Which of these does cell differentiation always involve?
  1. transcription of the myoD gene
  2. the movement of cells
  3. the production of tissue-specific proteins
  4. the selective loss of certain genes from the genome
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