1. Membranes surround and protect which of the following surfaces?
A. ball-and-socket synovial joints
B. internal cavities housing organs
C. cavities open to the outside world
D. all of the above
E. none of the above

Diseases may arise when proteins fail to fold correctly in their last stages of processing and/or are directed towards the lysosome rather than towards the cell membrane. cystic fibrosis is an example of this type of disease. in cystic fibrosis, a functional ion channel is sent to the lysosome for destruction rather than being sent to the plasma membrane. given this observation, the cellular component that is most likely the cause of the disease is the

Jamie is trying to become more active likes to run and lift weights but he feels the need to do more to get hidden burned up in work his heart doesn't have access to gym but has weights in living community with sidewalks can you come up with three different workouts for him that will him get into his target heart rate zone

1. imagine that you are a prehistoric artist and write a 350 to 500 word story explaining why you are an artist and what the purpose of your art is. be clear about what time period and location you are from. you may do research about prehistoric art, but be sure to include a bibliography if you do, and credit any direct quotes you use. 2. go to an art store and purchase some clay. now using only your hands, sticks, feathers, or other natural objects, create your own statuette or primitive tool. bake it in the sun or in a fire. if you can find natural pigments, you may color your work. take a digital photo of your finished work and send it in. use complete sentences and cite all of your resources.