Biology 1301 - EXAM 2
Of the following, the _______, which is enclosed in a membrane, has the greatest
amount of internal surface area. - ANS-Endoplasmic Reticulum
DNA strands are visualized using a(n) - ANS-Electron Microscope
The organelles and biomolecules present in homogenized cells can be separated by
centrifugation. Which of the following would be found at the top of a centrifugation
gradient? - ANS-ATP molecules
Prokaryotes - ANS-are surrounded by a cell membrane
The proteins that make up the cytoskeleton of bacteria are similar to _______ in
eukaryotic cells. - ANS-Actin
Which structure is known for its lack of nucleic acids? - ANS-Plant vacuole
7. Some proteins that are on the surface of mammalian cells contain carbohydrates.
These proteins are synthesized by _______ and the carbohydrates are added in the
_______. - ANS-the rough endoplasmic reticulum; Golgi apparatus
Which statement about the nucleus of animal cells is true? - ANS-DNA in the nucleus
combines with proteins.
The endomembrane system - ANS-includes the Golgi apparatus and the endoplasmic
reticulum.
Which organelles are involved in energy conversions? - ANS-Chloroplasts
Liver cells are exposed to radioactive amino acids, making all proteins synthesized
during this time radioactive. The cells are then removed at 5-minute intervals and
fractionated. Where in the cells is the radioactively-labeled enzyme lipase performing its
intracellular functions? - ANS-In lysosomes
Which organelle(s) is/are found only in plants? - ANS-Glyoxysomes
Which structure occupies the largest volume in a mature plant cell? - ANS-Vacuole
Of the following, the _______, which is enclosed in a membrane, has the greatest
amount of internal surface area. - ANS-Endoplasmic Reticulum
DNA strands are visualized using a(n) - ANS-Electron Microscope
The organelles and biomolecules present in homogenized cells can be separated by
centrifugation. Which of the following would be found at the top of a centrifugation
gradient? - ANS-ATP molecules
Prokaryotes - ANS-are surrounded by a cell membrane
The proteins that make up the cytoskeleton of bacteria are similar to _______ in
eukaryotic cells. - ANS-Actin
Which structure is known for its lack of nucleic acids? - ANS-Plant vacuole
7. Some proteins that are on the surface of mammalian cells contain carbohydrates.
These proteins are synthesized by _______ and the carbohydrates are added in the
_______. - ANS-the rough endoplasmic reticulum; Golgi apparatus
Which statement about the nucleus of animal cells is true? - ANS-DNA in the nucleus
combines with proteins.
The endomembrane system - ANS-includes the Golgi apparatus and the endoplasmic
reticulum.
Which organelles are involved in energy conversions? - ANS-Chloroplasts
Liver cells are exposed to radioactive amino acids, making all proteins synthesized
during this time radioactive. The cells are then removed at 5-minute intervals and
fractionated. Where in the cells is the radioactively-labeled enzyme lipase performing its
intracellular functions? - ANS-In lysosomes
Which organelle(s) is/are found only in plants? - ANS-Glyoxysomes
Which structure occupies the largest volume in a mature plant cell? - ANS-Vacuole
