Final exam latest latest latest(biology) Correctly Answered
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Biology.
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Biology.
Final exam latest latest latest
-This double-membraned organelle contains chromatin and is the site where most genetic information is stored in a eukaryotic cell.
a) nucleus
b) ribosome
c) Golgi apparatus
d) mitochondrion
e) endoplasmic reticulum (ER)
{{ANS}}a) nucleus
-A molecule with ...
final exam latest latest latestbiology correctly answered
this double membraned organelle contains chromatin and is the site where most genetic information is stored in a eukaryotic cell
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Final exam latest latest latest
-This double-membraned organelle contains chromatin and is the site where most
genetic information is stored in a eukaryotic cell.
a) nucleus
b) ribosome
c) Golgi apparatus
d) mitochondrion
e) endoplasmic reticulum (ER)
{{ANS}}a) nucleus
-A molecule with the chemical formula C24H42O21 is probably a
a) protein
b) lipid
c) hydrocarbon
d) carbohydrate
e) nucleic acid
{{ANS}}d) carbohydrate
-These organelles have their own ribosomes and their own "cell" division, which is
explained by the endosymbiont theory that holds that these organelles were once free-
living bacterial cells that came to reside in ancient eukaryotic cells.
a) microbodies and vacuoles
b) plastids and microbodies
c) ER and Golgi apparatus
d) mitochondria and plastids
e) mitochondria and microbodies
{{ANS}}d) mitochondria and plastids
-The substance CH4 is held together by covalent bonds. Based on the definitions used
in this course, which of the following is true?
a) It is a compound but not a molecule.
b) It is both a compound and a molecule.
c) It is a molecule but not a compound.
d) It is a compound unless it is mixed with H, then it becomes a molecule.
e) It is neither a compound nor a molecule.
{{ANS}}b) It is both a compound and a molecule.
-Which of the following is NOT a characteristic of all life as we know it on Earth?
a) ability for reproduction
b) having mitochondria
,c) ability to control metabolism
d) being composed of cells
e) ability to grow or develop
{{ANS}}b) having mitochondria
-All of the following are part of a prokaryotic cell except
a) plasma membrane
b) enzymes
c) DNA
d) endoplasmic reticulum
e) ribosomes
{{ANS}}d) endoplasmic reticulum
-All of the following are correct matches of the location of a protein and the location of
its synthesis except
a) protein secreted from the cell - rough ER.
b) lysosomal protein - free cytoplasmic ribosomes.
c) cytoplasmic proteins - free cytoplasmic ribosomes.
d) chloroplast stromal protein - chloroplast ribosomes.
e) plasma membrane protein - rough ER.
{{ANS}}b) lysosomal protein - free cytoplasmic ribosomes.
-The two amino acids depicted above both have R groups that are:
a) charged and hydrophilic
b) nonpolar and hydrophilic
c) polar and hydrophilic
d) charged and hydrophobic
e) nonpolar and hydrophobic
{{ANS}}c) polar and hydrophilic
-Human white blood cells are given radioactively labeled amino acids that they will
incorporate into proteins. This "tagging" of newly synthesized proteins enables a
researcher to track their location. In this case, we are tracking an enzyme that will be
used for digestion within the cell, and that will require an environment with lower pH
than found in the rest of the cell to function. What is its most likely pathway for these
proteins from synthesis to final destination?
a) ER ® Golgi ® lysosome
b) ER ® lysosomes ® vesicles that fuse with plasma membrane
c) ER ® Golgi ® vesicles that fuse with plasma membrane
d) nucleus ® ER ® Golgi
e) Golgi ® ER ® lysosome
{{ANS}}a) ER ® Golgi ® lysosome
,-The smooth regions of this winding membrane network are the primary sites of lipid
synthesis in cells.
a) Golgi apparatus
b) endoplasmic reticulum (ER)
c) mitochondrion
d) nucleus
e) ribosome
{{ANS}}b) endoplasmic reticulum (ER)
-A scientist wants to investigate the interior of bacterial cells. She decides to use
70,000x magnification, and will use very thin slices of the cell samples embedded in
plastic. Which instrument would be best suited for her studies?
a) a scanning light microscope
b) a centrifuge
c) a scanning electron microscope
d) a transmission light microscope
e) a transmission electron microscope
{{ANS}}e) a transmission electron microscope
-Which molecule has a shaded functional group that is a carboxyl group?
a) 1
b) 2
c) 3
d) 4
e) 5
{{ANS}}d) 4
-Which molecule has a shaded functional group that is weakly basic?
a) 1
b) 2
c) 3
d) 4
e) 6
{{ANS}}c) 3
-Which molecule has a shaded functional group that is nonpolar?
a) 1
b) 2
c) 3
d) 4
, e) 6
{{ANS}}b) 2
-The two molecules shown above provide an example of
a) radioactive isotopes.
b) chemical isotopes.
c) cis-trans isomers.
d) structural isomers.
e) enantiomers.
{{ANS}}c) cis-trans isomers.
-About 96% of living matter is made up of which four elements?
a) oxygen, hydrogen, calcium, sodium
b) carbon, oxygen, hydrogen, calcium
c) carbon, sodium, chlorine, nitrogen
d) carbon, hydrogen, nitrogen, oxygen
e) carbon, sulfur, phosphorus, hydrogen
{{ANS}}d) carbon, hydrogen, nitrogen, oxygen
-This protein is found in the plasma membrane of animal cells. It typically binds to parts
of the extracellular matrix and receives signals from the extracellular matrix.
a) integrin
b) dynein
c) fibronectin
d) actin
e) collagen
{{ANS}}a) integrin
-Water has a molecular mass of 18 g per mole, and glucose has a molecular mass of
180 g per mole. Which of the following would have approximately one glucose molecule
for every ten water molecules?
a) 180 g of water and 180 g of glucose
b) 18 g of water and 180 g of glucose
c) 180 g of water and 18 g of glucose
d) 180 g of water and 1.8 g of glucose
e) 1.8 g of water and 180 g of glucose
{{ANS}}a) 180 g of water and 180 g of glucose
-According to the rules for normal basepairing, which of the following represents a
correct DNA-DNA basepair?
a) G-G
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