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Which of the following molecules has the following properties:   1) It is found on a cell membrane as a vesicle is getting ready to bud off.  2) It functions by squeezing the connection between the initial membrane and the budding vesicle so that the vesicle can break away from the membrane.

This is question 2 of the 2 questions mentioned above:   In the same original cell, what would happen if instead of the RTK mutation above, ALL the ras molecules had a specific mutation so that they could NOT hydrolyze GTP? (To be clear, this cell has the ras mutation but no RTK mutation)

Name any single actin binding protein (2 points) and provide the function of that protein (2 points).

4.2 Wat is Siswe se mening oor skaatsplankry? (1)

2.5 Watter stelling is korrek?

For each of the three cytoskeletal systems (microtubules, intermediate filaments, and microfilaments) answer the following 5 questions…each answer is worth 1 points, and should only need 1-4 words for each.   A Microtubules: A1       what is the structural building block used to make the polymer in a cell? A2       What nucleotide is bound to the structural building block listed above? A3       Once the polymer is made in  cells, does the polymer have polarity? A4       What motor proteins (if any) move along the polymer? A5       In what direction (s) do the motors above move?   B Intermediate filaments: B1       what is the structural building block used to make the polymer in a cell? B2       What nucleotide is bound to the structural building block listed above? B3       Once the polymer is made in  cells, does the polymer have polarity? B4       What motor proteins (if any) move along the polymer? B5       In what direction (s) do the motors above move?   C Microfilaments: C1       what is the structural building block used to make the polymer in a cell? C2       What nucleotide is bound to the structural building block listed above? C3       Once the polymer is made in  cells, does the polymer have polarity? C4       What motor proteins (if any) move along the polymer? C5       In what direction (s) do the motors above move?

Which of the following statements about lactic acid and muscle fatigue is false?

Bonus When climbing stairs, the gluteus maximus and hamstring group muscles work as antagonists.

Which of the following types of joints is monaxial, but capable of only rotation?

Creatine phosphate (CP) functions within the muscle cells by: