Biology 151 Exam 2 Rated A+ Verified 2025
New Update
ATCCTAG What is the complementary sequence? - Answer ✔✔- TAGGATC
What is true of a light microscope compared to an electron microscope? - Answer ✔✔-
Light can use living cells
The structure containing bacterial chromosome is called__? - Answer ✔✔- nucleoid
Which cellular structure is common to all domains of life? - Answer ✔✔- phospholipid
bilayer cell membrane
Enzymes responsible for biosynthesis of membrane lipids would be located in what part
of the cell? - Answer ✔✔- endoplasmic reticulum
What proteins are not made at the rough ER? - Answer ✔✔- enzymes found in cytosol
What organelle is central to autophagy? - Answer ✔✔- lysosomes
What is the correct order of exocytosis or secretion pathway? - Answer ✔✔- rough ER,
Golgi, transport vesicle, exocytosis
Brefeldin A is a drug that disrupts transport from the ER to the Golgi apparatus. What
other organelles and membranes are affected? - Answer ✔✔- lysosomes, transport
vesicles, plasma membrane
What arguments support the theory that mitochondria and chloroplasts evolved from
prokaryotic endosymbionts? - Answer ✔✔- double membraned, own ribosomes, own
DNA, and both of their genomes are circular
Which organelles have a double membrane structure? - Answer ✔✔- Mitochondrion,
nucleus, chloroplasts
Alchohol is destroyed by the removal of hydrogen atoms. Where does this occur? -
Answer ✔✔- peroxisome
Taxol, a drug approved for the treatment of breast cancer, prevents depolymerization of
microtubules. What cellular function the affects cancer cells more than normal cells
might Taxol interfere with? - Answer ✔✔- chromosome movement in cell division
, Glucosamine, chondroitin, and hyaluronate are sold in health food stores to help reduce
pain and increase flexibility. They are molecules that make up...? - Answer ✔✔-
proteoglycan complex of extracellular matrix
Which of the following best describes the structure of a biological membrane? - Answer
✔✔- two layers of phospholipids with proteins either crossing the layers or on the
surface of the layers
Which part of the phospholipid is responsible for H bonding with water? - Answer ✔✔-
Phosphate head
True or False. Cholesterol is bad for our membrane since it reduces membrane fluidity?
- Answer ✔✔- False
Which of the following amino acids would most likely be present in the transmembrane
domain of an integral membrane protein? - Answer ✔✔- a hydrophobic amino acid like
valine
Some of the glycoproteins on a human cells surface are identity markers. What would
happen if the cell did not possess these particular molecules? - Answer ✔✔- the
immune system would attack the cell
Which of the following molecules would diffuse quickly across a lipid bilayer membrane?
- Answer ✔✔- O2
What do aquaporins do to the process of osmosis? - Answer ✔✔- speed it up
Cells are taken up by other cells by which of the following? - Answer ✔✔- phagocytosis
What is a signal transduction pathway? - Answer ✔✔- a sequence of changes in a
series of molecules resulting in a response
A steroid hormone binds to an intracellular receptor. When it does the resulting complex
is able to do what? - Answer ✔✔- act as a transcription factor in the nucleus
Weak ionic bonds formed between the negative phosphate functional group and
partially or fully positive amino acids of proteins in a kinase cascade do which of the
following? - Answer ✔✔- distort a protein from its inactive to its active form
What is an example of signal amplification? - Answer ✔✔- activation of 100 molecules
by a single signal binding event
True or False. Homologous chromosomes and sister chromatids are the same thing? -
Answer ✔✔- False
New Update
ATCCTAG What is the complementary sequence? - Answer ✔✔- TAGGATC
What is true of a light microscope compared to an electron microscope? - Answer ✔✔-
Light can use living cells
The structure containing bacterial chromosome is called__? - Answer ✔✔- nucleoid
Which cellular structure is common to all domains of life? - Answer ✔✔- phospholipid
bilayer cell membrane
Enzymes responsible for biosynthesis of membrane lipids would be located in what part
of the cell? - Answer ✔✔- endoplasmic reticulum
What proteins are not made at the rough ER? - Answer ✔✔- enzymes found in cytosol
What organelle is central to autophagy? - Answer ✔✔- lysosomes
What is the correct order of exocytosis or secretion pathway? - Answer ✔✔- rough ER,
Golgi, transport vesicle, exocytosis
Brefeldin A is a drug that disrupts transport from the ER to the Golgi apparatus. What
other organelles and membranes are affected? - Answer ✔✔- lysosomes, transport
vesicles, plasma membrane
What arguments support the theory that mitochondria and chloroplasts evolved from
prokaryotic endosymbionts? - Answer ✔✔- double membraned, own ribosomes, own
DNA, and both of their genomes are circular
Which organelles have a double membrane structure? - Answer ✔✔- Mitochondrion,
nucleus, chloroplasts
Alchohol is destroyed by the removal of hydrogen atoms. Where does this occur? -
Answer ✔✔- peroxisome
Taxol, a drug approved for the treatment of breast cancer, prevents depolymerization of
microtubules. What cellular function the affects cancer cells more than normal cells
might Taxol interfere with? - Answer ✔✔- chromosome movement in cell division
, Glucosamine, chondroitin, and hyaluronate are sold in health food stores to help reduce
pain and increase flexibility. They are molecules that make up...? - Answer ✔✔-
proteoglycan complex of extracellular matrix
Which of the following best describes the structure of a biological membrane? - Answer
✔✔- two layers of phospholipids with proteins either crossing the layers or on the
surface of the layers
Which part of the phospholipid is responsible for H bonding with water? - Answer ✔✔-
Phosphate head
True or False. Cholesterol is bad for our membrane since it reduces membrane fluidity?
- Answer ✔✔- False
Which of the following amino acids would most likely be present in the transmembrane
domain of an integral membrane protein? - Answer ✔✔- a hydrophobic amino acid like
valine
Some of the glycoproteins on a human cells surface are identity markers. What would
happen if the cell did not possess these particular molecules? - Answer ✔✔- the
immune system would attack the cell
Which of the following molecules would diffuse quickly across a lipid bilayer membrane?
- Answer ✔✔- O2
What do aquaporins do to the process of osmosis? - Answer ✔✔- speed it up
Cells are taken up by other cells by which of the following? - Answer ✔✔- phagocytosis
What is a signal transduction pathway? - Answer ✔✔- a sequence of changes in a
series of molecules resulting in a response
A steroid hormone binds to an intracellular receptor. When it does the resulting complex
is able to do what? - Answer ✔✔- act as a transcription factor in the nucleus
Weak ionic bonds formed between the negative phosphate functional group and
partially or fully positive amino acids of proteins in a kinase cascade do which of the
following? - Answer ✔✔- distort a protein from its inactive to its active form
What is an example of signal amplification? - Answer ✔✔- activation of 100 molecules
by a single signal binding event
True or False. Homologous chromosomes and sister chromatids are the same thing? -
Answer ✔✔- False
