Answer the question below. Then, explain why your answer is the best one. Why can't a starch molecule enter a cell right after a person eats a meal with starchy foods in it?
Because a starch molecule is too large to fit into a cell and needs to first be broken down into
smaller glucose molecules in the digestive system.
Because a starch molecule only stays in the digestive system and never leaves it to go into other
systems.
Because starch molecules first need to enter the respiratory system before they can get into
cells.

since electrons are negative the answer is neagtaive

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.