When onion cells are placed in an isotonic solution, the red pigmented area of the cell ...

A) increases

B) decreases

C) increases and then decreases

D) does not change

The Atomic Theory offers an explanation of a small particle of matter, called the atom. What must be true for a scientific theory, such as the atomic theory, to be strong and well supported?

What is the main energy source?

Read the closing of a letter below. with sincerest and warmest regards Which word or words in the closing should be capitalized?

The diagram below represents a solar eclipse. The area in the full shadow is where a total solar eclipse occurs. Based on the diagram, which statement is correct? A.

How can data on one variable be displayed in categories? a. histogram c. pie chart b. line graph d. lab drawing

The main prey for the frogs in a certain pond are dragonflies. If the number of dragonflies is greatly reduced because of pesticide usage, how could the frogs adapt in order to survive?

When a male donkey is bred with a female horse, the offspring produced is a mule, which is healthy but sterile. Karyotyping experiments have revealed that horses and donkeys have different numbers of chromosomes, 64 for horses and 62 for donkeys.

If the genotype of both parents was Aa, what would be expected of the genotypes among their possible offspring?

Which of the following best identifies a physical digestive process? enzyme action heat formation peristalsis acid secretion

During the cell cycle, specifically g1 interphase, a cell must reach a sufficient size and produce enough atp in order to a. undergo mitosis. b. undergo cytokinesis. c. produce 2 daughter cells. d. replicate its chromosomes.