A student designed an experiment to test the effect of temperature on bacterial growth. He grew three different cultures of E. coli in three incubators at different temperatures. What was the independent variable in this experiment?

Amber fossils can be found in igneous rock the earth's core Sedimentary rock metamorphic rock

An organism's genetic code is determined by

What are possible effects of long-term environmental changes? Check all that apply. 1. adaptation 2. extinction 3. migration 4. speciation 5. starvation

A tadpole will losse its tail as it grows into an adult, wich cell structer in the tail of a tadpole cause this change to occur?

Centromeres split apart during what phase of mitosis

Witch organism would have the most similar traits

Write the least common multiple of 7 and 14

Each horizontal row in a pedigree chart represents a mating. a generation. several siblings. several characteristics.

Simpler communications and decreased miscommunications are associated with

What is the signal for a vesicle storing peptide hormone to move to the plasma membrane and release contents of vesicle? a. Activation of an integrin receptor b. Activation of a g-protein c. Activation of an enzyme linked receptor d.