Which of the following statements about Archaean species and Bacterial species is true? Only one has...
Which of the following statements about Archaean species and Bacterial species is true?
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Only one has a prokaryotic cell type.
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Members of these two domains have a similar membrane structure.
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Members of both domains lack membrane-bound organelles.
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Both domains include methanogens.
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Both have their DNA packaged into nuclei.
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Which of the following statements about Archaean species
and Bacterial species is true?
Only one has...
Which of the following statements about membrane-enclosed organelles is true
Which of the following statements about membrane-enclosed organelles is true A. The nucleus is the only organelle in animal cells enclosed by a double membrane. B. The surface area of the ER far exceeds that of the plasma membrane of a typical cell. C. All of these statements are true D. The Golgi apparatus descends from a bacterial origin via endosymbiosis. E. Most proteins are synthesized in the organelles in which they reside. F. None of these statements are true
All life is comprised of cells. All of the following are true regarding the cells that...
All life is comprised of cells. All of the following are true regarding the cells that make up living organisms except one. Select the exception Multiple Choice Superficially, the cells of Archaea and Bacteria are quite similar. At a molecular level, however, these cells are very different All animal cells are eukaryotic Members of the Archaea are the only organisms that lack a membrane bound nucleus Members of the Eukarya are composed of cells that have membrane-bound organelles and DNA...
Bacterial cells typically have — while eukaryotic cells have — Select one: a. One linear chromosome;...
Bacterial cells typically have — while eukaryotic cells have — Select one: a. One linear chromosome; many circular chromosomes. O b. Two circular chromosomes; numerous circular chromosomes depending on the species. O c. A single circular chromosome; many linear chromosomes. O d. Several circular chromosomes; many linear chromosomes. Which of the following gives additional protection to some bacteria? Select one: O a. The capsule. O b. The nucleoid O c. The plasma membrane. O d. The cell wall. Chloroplasts Select...
1) Which of the following statements is false? There are few undescribed species of prokaryotes. Analysis...
1) Which of the following statements is false? There are few undescribed species of prokaryotes. Analysis of DNA sequences is a useful tool for studying prokaryotic diversity. Many prokaryotes have been difficult or impossible to grow in the lab. Horizontal gene transfer may make it difficult to infer prokaryote phylogenies. 2) One of the ways in which horizontal gene transfer can occur between species is if a virus carries DNA from one host cell to another. Which of the following...
1. Which of the following is false about photosynthesis? A. ATP is the molecule used to...
1. Which of the following is false about photosynthesis? A. ATP is the molecule used to store high energy electrons B. the molecules used to build glucose are carbon dioxide and water 2. Which of the following is true when comparing eukaryotic and prokaryotic cells? A. Some eukaryotic cells have membranes, others also have a cell wall. All prokaryotic cells have both a membrane and a cell wall. B. It is possible to see eukaryotic cells without a microscope but...
Bacterial cells, such as E. coli, are surrounded by a fluid plasma membrane and enclosed by...
Bacterial cells, such as E. coli, are surrounded by a fluid plasma membrane and enclosed by a rigid cell wall that protects the cell from damage. You will recall that there is no nuclear envelope in prokaryotic cells, but rather a “nucleoid region” with a single chromosome that is continuous (circular), not linear, as in eukaryotes. All of the genes required for basic survival and reproduction are found in the main chromosome. In addition to the main chromosomes, some DNA...
Which of the following statements is INCORRECT about enhancers. O A. The location and orientation of...
Which of the following statements is INCORRECT about enhancers. O A. The location and orientation of the enhancer is non-specific (they are functional regardless of their general location around an within a gene). B. Both activator and repressor proteins can bind to an enhancer. C.Enhancers can only exert their effect in one direction along the DNA. D. Enahncers can bind proteins to affect the architecture (structure) of the DNA. Reset Selection Question 5 of 5 Select all of the following...
Which of the following statements about the molecular structure of antigens is correct? Multiple Choice They...
Which of the following statements about the molecular structure of antigens is correct? Multiple Choice They have molecular weights of around 1000. They are usually made of lipids. They have one antigenic determinant (epitope). They are made up of many antigenic determinants (epitopes). a whole bacterial cell. all of the combined antigenic determinants on a bacterial cell. one epitope on the bacterial cell. the bacterial cell's DNA. Many different antibodies can be made against a single antigen. False True Choose...
need help on these questions please molecule which moves down its concentration gradient and across a...
need help on these questions please
molecule which moves down its concentration gradient and across a pore in a cel membrane without energy being expended by the cell is experiencing When the fluid within a cell has a higher concentration of dissolved substances than the fluid surrounding the cell, we say the fluid surrounding the cell is 14. A typical bacterial cell has a salt concentration of about 1% If the cell is placed in a solution containing 10% salt,...
5. Which of the following statements about cancer cells is TRUE? a. The respiratory chain is...
5. Which of the following statements about cancer cells is TRUE? a. The respiratory chain is highly active to support fast growth and cell division. b. Cancer cells produce 2 lactate, 1NADH and 4 ATP from glucose. c. Many cancer cells produce less energy than ‘healthy’ body cells because their mitochondria have been lost during cell division. d. Cancer cells produce less energy than healthy body cells due to a malfunction of their TCA cycle. e. Cancer cells are unable...
All life is comprised of cells. All of the following are true regarding the cells that make up living organisms except one. Select the exception Multiple Choice Superficially, the cells of Archaea and Bacteria are quite similar. At a molecular level, however, these cells are very different All animal cells are eukaryotic Members of the Archaea are the only organisms that lack a membrane bound nucleus Members of the Eukarya are composed of cells that have membrane-bound organelles and DNA...
Bacterial cells typically have — while eukaryotic cells have — Select one: a. One linear chromosome; many circular chromosomes. O b. Two circular chromosomes; numerous circular chromosomes depending on the species. O c. A single circular chromosome; many linear chromosomes. O d. Several circular chromosomes; many linear chromosomes. Which of the following gives additional protection to some bacteria? Select one: O a. The capsule. O b. The nucleoid O c. The plasma membrane. O d. The cell wall. Chloroplasts Select...
Bacterial cells, such as E. coli, are surrounded by a fluid plasma membrane and enclosed by a rigid cell wall that protects the cell from damage. You will recall that there is no nuclear envelope in prokaryotic cells, but rather a “nucleoid region” with a single chromosome that is continuous (circular), not linear, as in eukaryotes. All of the genes required for basic survival and reproduction are found in the main chromosome. In addition to the main chromosomes, some DNA...
Which of the following statements is INCORRECT about enhancers. O A. The location and orientation of the enhancer is non-specific (they are functional regardless of their general location around an within a gene). B. Both activator and repressor proteins can bind to an enhancer. C.Enhancers can only exert their effect in one direction along the DNA. D. Enahncers can bind proteins to affect the architecture (structure) of the DNA. Reset Selection Question 5 of 5 Select all of the following...
need help on these questions please
molecule which moves down its concentration gradient and across a pore in a cel membrane without energy being expended by the cell is experiencing When the fluid within a cell has a higher concentration of dissolved substances than the fluid surrounding the cell, we say the fluid surrounding the cell is 14. A typical bacterial cell has a salt concentration of about 1% If the cell is placed in a solution containing 10% salt,...
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