What nitrogen base is present in dna but absent in rna?

This has been reduced in size usually over time and has less important functions in some related organisms than in others

A child tosses a ball straight up into the air. When is the ball's potential energy the greatest? A. when it reaches the top of its flight B. when it first leaves the child's hand C. when it approaches the top of its flight D.

6 Carbohydrates, such as glucose, are excellent sources of immediate energy for living organisms. More complex carbohydrates, such as glycogen and starch, can also be used for the long term storage of energy.

Which describes step three of a muscle contraction? A: The sarcomere lengthens. B: The space between sarcomeres increases. C: Actin and myosin are partially overlapped. D: Actin and myosin are completely overlapped.

Which structure of a protein is the amino acid sequence? A: Secondary B: Quaternary C: Primary D: Teriary

What is the stinging organelle of paramecium that assists it in capturing large prey?

Is a tarantulas a producer, an herbivore, a carnivore, a scavenger, or a decomposer.

What role do ribosomes play in carrying out genetic information?

When does fermentation occur?

Where in the cell is dna located