If the bacteria

e. coli synthesizes dna at a rate of 100,000 nucleotides per minute and it takes 30 minutes to replicate the dna, how many base pairs are in the

e. coli chromosome?

Around a pond, there is a small population of turtles. Some of them have solid dark brown shells and some of them have yellow and brown shells with yellow spots. Spotted shells are dominant over solid shells.

The movement of a ciliated protozoan is controlled by a protein called RacerX. When this protein binds to another protein found at the base of the cilia, it stimulates the cila to beat faster and the protozoan to swim faster.

What happens if the pressure in an angler fish habitat decreases

Which of the following problems do immigration and emigration pose for demographers? a. Demographers must provide for more city services. b. Demographers cannot identify the age structure of immigrants. c.

People once believed that all planets and stars orbited around

Using a punnet square, cross a heterozygous grey mouse with a white mouse. (Grey is the dominant allele and white is recessive.) A) what percent of the offspring have grey fur? B) What percent of offspring have white fur?

Put the steps of muscle contraction in order from first (1) to last (5). The sarcomere shortens. Calcium ions are released by a nerve cell. The sarcomere is relaxed. Actin and myosin overlap completely. Actin and myosin are activated.

Explain how muscles are affected by space travel

The house fly, Musca domestica, has a haploid chromosome number of 6. How many chromatids should be present in a diploid, somatic, metaphase cell?

True or false: A substance will float in water if it has a mass greater than its volume