A single nucleotide of DNA is made up of ______. Choose all that apply. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

You treat a patient, with a urinary tract infection, with a course of antibiotics, but unfortunately the infection does not clear by the end of the treatment. Testing reveals the bacteria are resistant to the antibiotic administered to the patient. Is this an example of evolution? Why or why not? How do you explain the resistant bacteria? Please explain in a paragraph, a minimum of 4-5 sentences. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

Individuals with sickle cell anemia have a single point mutation that changes one amino acid on the surface from glutamate to valine. Glutamate has a hydrophilic R group, and the change to valine causes hemoglobin molecules to stick together at that location, producing this harmful disease. Without needing to memorize the properties and structure of valine, from this information and your knowledge of amino acids, you can predict that valine ______. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

The COVID-19 pandemic has been characterized by a continual series of variants, with each new variant displacing the previous one. For example, in the first half of 2022 in the U.S., we saw the Omicron BA.1.1 variant be displaced by BA.2, which was then displaced by BA.2.12.1, which in turn was displaced by BA.4/BA.5, with BA.5 becoming dominant in July. Is this an example of evolution? Why or why not? Please explain in a paragraph, a minimum of 4-5 sentences. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

Non-scientists regularly use the word “theory” in a very different manner than scientists. You may have heard examples of this when watching the news. As a (made up) example, a newscaster might say something like “scientists think eating chocolate might make us live longer; their theory is that antioxidants in the chocolate reduce cellular damage from oxidative stress”. In this context, their use of the word “theory” actually refers to a ______. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

You view a single-celled organism using a microscope and determine that it does not have a nucleus. You can therefore be sure this organism could belong to which domain(s)? Please choose all appropriate possibilities. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

Erwin Chargoff used paper chromatography to discover that in DNA, the amount of guanine equals the amount of cytosine, and the amount of adenine equals the amount of thymine. This discovery later helped James Watson and Francis Crick determine the structure of DNA, because it suggested ______. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

Polar molecules and ions stay in solution in water because they are [name1], whereas nonpolar and uncharged compounds do not dissolve in water because they are [name2]. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

Compare and contrast DNA and RNA by matching each term with its best description. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.

Protein secondary structure results from ______. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed.