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Bio test #2 part 1

QuestionAnswer
Lysosomes are vesicles bounded by membranes that contain oxidative enzymes. Their functions include all of the following except they allow bacteria to pass through unaffected.
Bacteria are generally 1 to 2 micrometers thick.
Gram staining is a common method of distinguishing bacteria. It takes advantage of the thickness of the peptidoglycan layer in the cell wall. What type of bacteria appear red after staining with a secondary dye? Gram negative
Prokaryotic cell movement is attributed to the flagella.
Sulfolobus are arches that are commonly found in geothermal environments, with an optimum growth temperature of about 80 degrees C. Which of the following features allows archea to thrive at such temperatures? Archeal membranes contain special lipids.
The distinctive feature of chloroplasts is that they contain a green pigment called chlorophyll.
The organelle involved in the oxygen-requiring process by which the energy in macromolecules is stored in ATP is the mitochondria.
Plant cells often have a large membrane-bound sac that is used for storing water and other substances. This organelle is called a central vacuole.
Some ribosomes are embedded into rough endoplasmic reticulum.
A cell biologist has developed a new drug that will block the cis face of the Golgi app.. If eventually approved by the FDA, she wants to use this new drug to aid cancer patients. What will this drug prevent from happening inside a cancer cell? The movement of the lipids and proteins from the endoplasmic reticulum to the Golgi apparatus.
Cell crawling is essential for all of the following except cytoskeleton reorganization.
The genetic material of which kind of cells is included in a single, circular molecule of DNA devoid of any histone proteins? bacteria
Nucleolus of the nucleus is the site of ribosome assembly.
If you were to use antibodies that were chemically bonded to a stain in order to visualize the expression pattern of a protein in a fixed tissue, which of the following experimental techniques and equipment would be applicable? immunohistochemistry, bright-field microscopy
The genetic material of which kind of cells is included in a single, circular molecule of DNA devoid of any histone proteins? bacteria
Schlieden and Schwann stated the "cell theory", which in its modern form includes all of the following postulates except all cells need oxygen.
Some of the functions of the eukaryotic organelles are performed in bacteria by the cell wall.
Mitochondria and chloroplasts are the other organelles besides the nucleus that contain DNA.
Centrioles are organelles which have all of the following except a lipid bilayer.
Ribosomes are large molecular aggregates of protein and RNA.
If a cell has a normal osmotic pressure of 4500 mmHg and is placed into a solution with an osmotic pressure of 3500 mmHg, what will happen to the cell? The cell will LOSE water and its osmotic pressure will DECREASE.
Which of the following statements concerning redox reactions are false? Oxidation reactions and reduction occur independently.
A new antibiotic has been developed that will use noncompetitive inhibition. This means that the antibiotic will bind to the enzyme and alter the shape of the enzyme.
As energy is being reconverted through the many forms, it is continuously lost as heat.
While conducting an experiment, you realize that a competitive inhibitor was interfering with your reaction. To overcome this problem, you increase the concentration of the correct substrate in the reaction.
The type of transport that is specific, which requires specific carrier molecules and energy is active transport.
Enzymes are very specific in their choices of substrates because each different enzyme has an active site that is shaped to fit a certain substrate molecule.
GABAa receptors play an essential role in neurotransmission in the central nervous system. In response to the appropriate signal, these receptors open up and allow CI- to flow into the cell. Given this info, receptors can be classified as a gated ion channel.
Created by: evie mcintyre
 

 



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