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1- How is the DNA of prokaryotes organized? In chromosomes? If so, how many, what shape?
2- what are the characteristic shapes of individual bacteria cells? Give Latin and English terms.
3- why do Gram-positive bacteria retain the violet dye?
4- what is the difference between a chemolithotroph and a chemoheterotroph?
5- Differentiate between the following sets of related terms:A) prokaryotic/eukaryotic.B) obligate anaerobe/facultative anaerobe/obligate aerobe.C) Gram-positive/ Gram-negative.
6- The Gram stain test separates most types of bacteria into two groupe. What steps are involved in this test?
Explain why is potassium not equally distributed across the membrane and why is cell negative on the inside?
Assume if neurons are exposed to a chemical agent that prevents the NA + channels from opening, what would happen to the neuron? What would happen if the K + channels were inhibited?
A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test tube of water containing 0.02 molar glucose. Assume that glucose is not actively transported into the cell, which terms describes the tonicity of an external solutio..
Once apoptosis starts, a detachment takes place in extra cellular matrix. This is calleda. In which organelle translation takes place inside the cell?
Means of transport would most probable be used for moving a medium-sized molecule (like a monosaccharide or an amino acid) from a low concentration on the outside of a cell to a high concentration on the inside of a cell.
Why a defendant's genes do not excuse criminal behaivor.
Fructose is a ketohexose monosaccharide discovered in honey, fruits, and other sources. It is also added to some foods and drinks as a sweetener.
Describe why an anaerobic indicator strip in an anaerobic environment will revert to blue if it gets wet.
Whilst playing lacrosse, Frank took a blow to the back of his neck. When she looked toward the stars but not directly at them, she could see them. Describe what was happening. Implicated in this is the fovea and its cells.
Suppose an ecologist is studying interactions among different species in an ecosystem. What level of organization should the ecologist study?
A subject extends his arm palm up to catch a falling object. The contact of object with the hand triggers a reflexive response in the biceps muscle. But this response is different and opposite if the object is a raw egg instead of a ball. Explain why..
Synthesis of fatty acids requires the movement of citrate out of the mitochondria. This occurs under conditions of high levels of acetyl CoA which is required to stimulate the activity of:
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