A hydrogen atom shares electrons equally to form a [bond1] covalent bond with another hydrogen atom to form hydrogen gas, whereas an oxygen atom, because it is so electronegative, forms [bond2] covalent bonds with two hydrogen atoms to form water. 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.

In December 2020, a more transmissible variant of SARS-CoV-2 began dominating the coronavirus population in the U.K. This new variant, called B.1.1.7 or Alpha, was detected in September of 2020, taking just four months to become the dominant strain in the U.K. How does B.1.1.7 (Alpha) compare to the original strain in terms of fitness? 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.

Below are two common misconceptions about evolution by natural selection. Choose one of these two misconception and (1) explain why it is incorrect and (2) explain the correct evolutionary concept. Two common misconceptions (incorrect views) about evolution by natural selection: Evolution by natural selection is random, and random processes could not lead to structures as incredibly complex as those we see in living organisms Species alive today descended from other species alive today 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.

You isolate DNA from a culture of cells and find it contains 20% cytosine. At what percentages are the other three nucleotides found? 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.

SARS-CoV-2, the coronavirus responsible for the disease COVID-19, contains an RNA genome surrounded by a protein capsid (coat) and a lipid envelope (membrane). Its spike proteins enable it to bind to ACE2 receptors of epithelial cells, allowing it to gain entry. Once inside, the virus hijacks the cellular functions and effectively turns the cell into a virus producing factory, with the synthesis of viral genome and proteins allowing virus particles to assemble and exit the cell. This overall process is representative of what viruses in general accomplish when infecting cells. Based on this information and your understanding of the definition of life, are viruses alive? Please explain, including in your answer specific definitions of what it means to be alive, and addressing whether or not these apply to viruses. 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.

Evolution can best be defined as ______. 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.

How is oxygen delivered to the heart muscle?

A research study has two samples, each with n = 6, and the two experimental treatments used in each sample are being compared using an independent-measures t statistic. What is the df value for the t statistic in this study?

A researcher conducts a hypothesis test using a sample of n = 20 with M = 34 and s2 = 36 from an unknown population. What is the df value for the t statistic?

A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 participants. Which of the following designs would produce 20 scores in each treatment?