The brain and spinal cord are formed from

a. the notochord, which forms from endoderm

b. the neural tube, which forms from mesoderm

c. the neural tube, which forms from ectoderm

d. the notochord, which forms from mesoderm

A plant cell is placed in a freshwater solution. When it swells with water, filling it's vacuole, we say that it has A) crenated B) plasmolyzed C) lysed D) become turgid

Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration?

Which of the following statements is false?

Mutation, genetic combination, and gene flow all add what to a population? A.) genetic variation B.) genetic uniformity C.) evolution D.) natural selection

Why do deep-ocean vessels have very thick windows and walls?

All of the following are functions of the peripheral nervous system except it interprets signals from the external environment it sends signals to the internal organs it receives messages from the central nervous system it sends messages directly to

which of the following is a energy consuming process a. excretion b. anabolism c. both a and b d. catabolism

Describe what it means for a field of study to be considered a science

Why are organisms that have organs classified as more complex than organisms without organs?

What is the final energy source that the muscles need in order to move? fat, sugar, ATP, or glycogen