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When calculating the concentration of bacteria in a liquid culture, you should plate multiple dilutions of your culture then count the colonies that develop on only one of those plates. The plate that you count should contain between 30 and 300 colonies. Should you avoid using plates with fewer than 30 or more than 300 colonies because some error in your technique led to those numbers of colonies, or because using fewer than 30 and more than 300 colonies can lead to an error in your calculations? Explain your answer.
If the epidermis is wounded (cut), epithelial cells must migrate out on the ECM of the dermis to cover the wounded area. Epithelial cells migrate through the use of transient focal adhesions.
Think about the meaning of the term ecology How do the ideas of energy and chemical cycles, community structure, biodiversity and succession fit together to form basis of the way natural world works?
Which muscle will depress the scapula or elevate the ribs.
q1. describe why organisms only reproduce their own kind and why offspring more closely resemble their parents than
Fatty acids are "amphipatic". What is meant by this term and how does an amphipathic molecule behave in water? Draw a diagram to illustrate your answer.
The TP53 gene encodes the p53 protein. This 393-amino acid protein is a transcription factor that is regulated by phosphorylation and by its interaction with another phosphoprotein, the negative regulator Mdm2.
Both endocrine and nervous systems are major regulating systems of the body; though, nervous system has been compared to an airmail delivery system and endocrine system to the pony express. In brief explain this comparison.
one of the problems associated with growing plants in space is lack of gravity.
Cells are capable of replicating their own DNA, which amounts to billions of base pairs, quite efficiently, and yet in a PCR or sequencing reaction we are only able to accurately replicate.
Which type of symmetry does each of the following animals display? Sponge, hydra, bobcat, jelly, snake, turtle, and octopus. Group these animals in either asymmetry, radial symmetry, and bilateral symmetry.
Discuss the events that take place with glucose levels and insulin secretion both after and meal and during exercise. Why might low blood sugar levels occur?
Which type of cells below is not known for its extensively developed SER?
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