Sodium ions move into cells from areas of low concentration to areas of high

concentration. Which of the following processes is used to move the sodium

ions?

A. Passive transport

B. Active transport

C. Diffusion

D. Osmosis

A stream table is a tool used to show how water causes erosion. Water from the left side of the table is added to model a stream. Suppose a block of wood is placed under the left edge of the table.

List the primary two mechanisms that control the motility and secretion of the digestive system

A child has sickle cell disease (ss) but neither parents is ill. What must be true of the parents genotype

Which cell structure is correctly paired with its primary function?

On the challeneger scientists mission was to study organisms that live in the sea the depths of the oceans nd the

The relative location of four genes on a chromosome can be mapped from the following data on crossover frequencies Genes B and D Frequency of Crossover 5% Cand A 15% A and B 30% C and B 45% Cand D 50% Which of the following represents the relative

How can we use rocks to determine how an area used to look in the past?

What type of bonds connect the deoxyribose sugars to the phosphate group?

What are proteins made up of?

What are at least 5 important words associated with the water cycle? What do they mean? Why are they important?