Penelope is adding fractions while taking a math test. what part of her brain is at work?

Cerebrum it helps you think to solve problems and its also helps you read and write, and, learn. Hope this help you :)

69 is the correct math for the amino acids

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!