The cognitive theory of dreaming proposes that dreaming occurs when the cerebral cortex synthesizes neural signals from activity in the lower part of the brain. results from the brain's attempts to find logic in random brain activity. requires that conscious experience during sleep be predominantly driven by internally generated stimuli. involves information processing and memory.

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.