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How does cell division differ between animal and plant cells? 1. Animal cells lack centrioles and no asters form during cell division. 2. Plant cells form a cleavage furrow or indentation of membrane between new daughter cells. 3. Plant cells resort to binary fission. 4. The cell plate is the final partitioning of animal cells. 5. All of the above are incorrect.
A protein has an apparent mass of 800 kD by gel filtration chromatography, but SDS-PAGE shows a single band at a position corresponding to 200 kD. In an ultracentrifuge, will the protein exhibit a sedimentation coefficient corresponding to 200 kD ..
Assume you have a set of 4-Hfr strains and you carry out a series of crosses with a multiply marked recipient that is auxotrophic for many different nutritional markers.
High concentrations of caffeine causes an isolated muscle to contract in the absence of any activity in the motor nerve. This contraction is not blocked by nicotinic blocking agents like curare. Where do you think caffeine acts?
What is the possibility that their next child will have normal pigmentation. Accurately what are her "swollen glands" and how have they become swollen.
A circular coil enclosing an area of 160 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 7.0 ?, and the ends of the wire are connected to form a closed circuit.
Determine which of the following structures is not found in the cell envelope?
After some time, you start your experiment. Before exposing the population to pesticide, you are able to determine that the frequency of the resistance allele in the sample is 0.08.
One hundred microliters of this pigment was dissolved in 5 mls acetone=call this A. 5 mls acetone was added to A=call this B. 5 more mls of actone was added to B= call this C and List the sensory receptors found in the dermis of the skin.
What does bacteria cells have that plant and animal cells don't? What does animal cells have that bacteria and plant cells don't? What do plant cells have that animal and bacteria cells don't? What do all three have in common?
Suppose you are injecting a subthreshold depolarizing current step into a neuron. Draw the corresponding membrane voltage response;
Determine how much 1.0 M NaOH must be added to a 100 ml of 10 mM H3PO4 to raise the pH of the solution to 7.0?
the stomach contains enzymes that aid in digestion, including proteases which digest proteins. Why dont these enzymes digest the stomach and small intestine, which are partially composed of protein?
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