1. what makes up sides of the ladder of a DNA molecule?

2. how is a RNA different from a DNA?

3. what role does RNA play in cell life

4. what are the three kinds of RNA and what does each do?

5. what can cause mutation?

How many alleles can be carried in each gene? a. one c. three b. two d. four

Griffith's experiments with S. pneumoniae were significant because they showed that traits could be transferred from one organism to another. What else did he find that was significant? a. Heat kills bacteria. b. A virus made the bacteria pathogenic.

A person does not use chronology in day-to-day life

How could a change in an abiotic factor such as sunlight affect an ecosystem?

The birds that were eating at the bird feeder initially flew away when the shadow of Charlie's kite passed over the feeder.

Which of these was not characterized of the first cells on Earth? A. anerobic B. prokaryotic C. single-celled D. contained organelles

Where would you expect to find green algae? Choose three answers. A. in the shadow of a cactus B. between the grasses in a marshy pond C. in a dark hollow in a rainforest D. in a shallow ocean lagoon

A diamond has a density of 3.5 g/cm what is the mass of a diamond with a volume of 3.0cm

Bone remodeling during which a client's osteoclasts resorb bone

How many homologous chromosome alignments are possible for independent assortment during meiosis? one two three four