Two students are making models of cells in plants and animals. They
choose an expanding and shrinking
rubber band to show how one type of
cell acts. Which type of cell does the
A
rubber band best model?
O A. Muscle cells
O B. Epithelial cells
O C. Dermal cells
O D. Guard cells
O E. Nerve cells
HINT
SUBMIT

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.