1. to get the materials it needs that move across its surface?

assignment: cell size exploration

cell length of one side area of one side of the cube
(l × w) surface area (area of one side × 6 sides) volume
(l × w × h) surface area / volume ratio of surface area to volume
(for example, 5: 1)
a 1 cm
b 2 cm
c 3 cm

refer to your data table to answer these questions.

1. what happens to the ratio of surface area to volume as the cell size increases without the cell changing shape?

what does a surface area/volume ratio of 6: 1 mean for the cell’s ability

2. what does a surface area/volume ratio of 3: 1 mean for a cell’s ability to get materials across its membrane, compared to the cell with a ratio of 6: 1?

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).