Which of these mechanisms exerts gene control by suppressing transcription in eukaryotes?

A) acetylation of histone proteins B) methylation of DNA C) action of activator proteins

About one year is required in the gymnosperm: 1. to develop the egg 2. to grow the male and female cones 3. between pollination and fertilization 4. between fertilization and germination

A California biotechnology firm submitted a tomato that will not rot for weeks to the U. S. Food and Drug Administration. It designed such a fruit by changing the genetic structure of the tomato.

Which nitrogenous base is part of an RNA molecule but not a DNA molecule?

How do observations relate to hypotheses? Check all that apply. Observations leading to a hypothesis come from prior knowledge or research. Observations leading to a hypothesis come from the same experiment.

Explain how a small amount of chlorofluorocarbons can destroy a large amount of ozone.

5 food chains in florida?

Which statement best describes heredity? Inherited traits are coded for in an individual's DNA. Individuals are born with acquired traits. Inherited traits are the result of learning, experiencing, and making choices.

Which of the followijng is not type of bacteria that can cause illness a) aerobic bacteria b) anaerobic bacteria c) facultative anaerobic bacteria d) depilitative bacteria;

What are the two part of a solution

Which statement about the scientific method is true? -The scientific method involves developing and testing conclusions. -The scientific method is a linear approach to accumulating scientific knowledge.