Which of the following can regulate gene expression in eukaryotes?

A transcription factor

b plasmids

c lipids

d lac operons

What might be the reason why the bromobenzene substrate is added to the reaction flask in two portions rather than all at once?

In general which step ofvthe scientific method is generally follows a hypothesis

Does Mitosis ever stop in cells? Explain your answer

A student wants to compare three population of buffalo. Population A has 25 buffalo in 1 km2. Population B has 10 buffalo in 0.5 km2. Population C has 50 buffalo in 5 km2. Which population of buffalo has the lowest population density?

Which characteristic do all protists have? A They all make or consume food. B They all survive in any environment. C They are all unicellular. D They all have flagella.

Select the expression that is equal to (9c+3) - (5x-7) 14x-4 14x + 10 4x-4 4x + 10

What is the term for the net force directed toward the center of an object's circular path? a. circular force c. centripetal force b. centrifugal force d. orbital force Answer:c. centripetal force

Stephan predicted that the seeds will start to grow faster if an electric current traveled through the soil in which they were planted. Is it A. Recognize a problem. B. Form a hypothesis C. Test the hypothesis with an experiment or D.

Carbohydrates may form larger carbon-based macromolecules by combining with which elements? A. sodium, potassium, nitrogen B. nitrogen, sulfur, phosphorus C. potassium, sodium, sulfur D. silicon, phosphorus, sodium

Will a person with cycloplegia have difficulty with near or distance vision? Explain