CHM341-EXAM_5_Fall2025.pdf

Which muscle is the prime mover during elbow extension ? 

During a student’s dissection of the posterior lumbar region, they cut the aponeurosis of the erector spinae muscles away from the sacral attachment. What muscle should they expect to find DIRECTLY beneath the aponeurosis?

Free Response Question 1: A hybrid vehicle consumes gasoline at an average rate of 52.0 miles per gallon. What is the average gas mileage in km/L? How many km can the car travel on 15.0 L of gasoline? Enter your answers for parts A and B below. Include proper significant figures and units for your answers. Show your work and answers for this problem on your scratch paper. Upload the scratch paper within 30 mins of completing the exam. 

3.00 yards = ______ cm

Congratulations! You have completed the first exam. Please upload your scratch paper with the work for your free response problems using the Exam 1 Upload link in Canvas within 30 minutes of submitting this exam. Make sure your work is labeled with the proper free response question number. Circle your final answers and include units. These answers must match the answers you submitted above.   Upload all work in ONE PDF or JPEG file.    

Free Response Question 2: Proxima Centauri is the nearest star to Earth after the Sun. Proxima Centauri is on average located 4.25 light-years away from Earth. On average, how many kilometers apart are Earth and Proxima Centauri? A light year is the distance light travels in one Earth 1 year. 1 light year = 9.4607 x 1012 km On average, how far is Earth from Proxima Centauri in miles? Enter your answers for parts A and B below. Include proper significant figures and units for your answers. Show your work and answers for this problem on your scratch paper. Upload the scratch paper within 30 mins of completing the exam.

Cleavage of the zygote is defined as:

The first epiblast cells to undergo gastrulation become which of the following?

Which of the following structures is derived from the neural crest?