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Free CLEP Science and Mathematics Exam Braindumps (page: 18)

Page 17 of 128
PDF with 494 Questions

Two subunits built from proteins and rRNA.

  1. Chloroplast
  2. Mitochondria
  3. Nucleus
  4. Ribosome
  5. Endoplasmic reticulum

Answer(s): D

Explanation:

Ribosomes, built of a small and a large subunit, are made up of proteins and ribosomal (r)RNA.



The site of protein synthesis in eukaryotic cells.

  1. Chloroplast
  2. Mitochondria
  3. Nucleus
  4. Ribosome
  5. Endoplasmic reticulum

Answer(s): D

Explanation:

Ribosomes are the site of protein synthesis, whether or not they are free-floating in the cytoplasm or attached to the membrane of the ER.



Inner membrane made of convoluted cristae, where ETC proteins can be found.

  1. Chloroplast (13) Mitochondria
  2. Nucleus
  3. Ribosome
  4. Endoplasmic reticulum

Answer(s): B

Explanation:

The mitochondrial inner membrane takes many twists and turns into folds called cristae, where the proteins of the electron transport chain can be found.



Enzymes that copy DNA can make mistakes and end up copying certain regions toward the tips of chromosomes multiple times, resulting in areas that can cause various genetic illnesses.

  1. Epistasis
  2. Epigenesis
  3. Genomic imprinting
  4. Triplet repeat extension
  5. Mitochondrial inheritance

Answer(s): D

Explanation:

Some genes normally contain terminal regions with triplet nucleotide repeats (i.e. ...GTCGTCGTCGTC.) or other repeats that can extend up to 50 nucleotides long. Accumulation of repeats can result in genetic illnesses.






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