Three coins are tossed. Find the probability that you get EXACTLY two Heads.  Write ONLY your answer in the response box. Show your work which justifies your answer ON YOUR PAPER.

____________________________ occurs when reinforcers are added to environments independent of participants’ behavior. Regardless of participants’ actions at the time, these conditions are maintained on an ongoing basis, or presenting according to a fixed-time or variable-time schedule of reinforcement.

Imagine you work in a research lab that develops a drug that binds to the sigma factor, preventing it from its normal function. What impact would this drug have on a culture of bacteria? Copyright 2025 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.

Isabel’s Story:  When the group decides to name the boat, Isabel’s grandfather quietly says “The St. Louis.”  Why do you think this is important?  

What does the term Complete Blood Cell Count mean (CBC)?

Which nerve is NOT involved in both the flexion and extension of any joint in the forearm and hand based on the provided information about muscle innervation?

Which muscle of the Hip and Thigh is primarily responsible for abduction and medial rotation of the thigh but has its innervation not from the femoral nerve?

Which of the following is directly involved in the movement mechanics of the human torso but not primarily detailed in the external layer of the abdominal wall?

In the image shown, identify letter K

Cystic fibrosis is an example of a disease that involves a deletion mutation resulting in the loss of a single codon. This loss results in a protein that ______. Copyright 2025 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.