Why is RNA necessary to act as messenger?

What are the ways businesses or industries contribute to the contamination of water?

A single gene affects color in a particular species of beetle. Red is dominant to black, so BB and Bb genotypes are red. Assume the population is at Hardy-Weinberg equilibrium, with equal frequencies of the two alleles.

What would happen if you set up a microscope so light with a blue wavelength is focused? the blue light would be surrounded by a halo. the red light would show a spherical aberration. the green and red light would be out of focus.?

Culture of klebsiella colonies is smooth, indicating the presence of a capsule. A culture of pseudomonas shows rough colonies. Based on this information alone, which species is likely to be more pathogenic?

Which of the following scientists proposed that conditions such as war, disease, or lack of food play a role in limiting population growth? Charles Darwin James Hutton Jean Baptiste Lamarck Thomas Malthus

In a, are (Y) and are (y). A=4 B=1 C=2 D=3

wall of the gut tube has layer of smooth muscle that run both circulary and longitudinally contraction of these muscles produces

Many toxins and poisons block certain enzymes in the mitochondria. For example, many fruits, including apricots, apples, plums, peaches, and cherries, contain seeds and pits that can cause the formation and release of the poison cyanide if they are

In a classroom system, the students produce an output of information on tests and homework. This information becomes an input for the grading part of the system. Which statement about the output of the students is true? A.

In two or more complete sentences describe how a dam placed in a river can act as both a constructive and destructive force.