Which of the following does not show the law of conservation of mass?
a. 24g of mg burn in 32g o2 to produce 56g of mgo
b. 24ml of mg burn in 32ml o2 to produce 56ml of mgo
c. 2 atoms of mg react with 1 molecule of o2 to produce 2 units of mgo
d. 1 atom of mg reacts with 1 atom of o to produce a unit of mgo that contains 2 atoms

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not

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).

Explain the significance of meiosis in sexual reproduction