What organisms don't have organelles?

Which is the most accurate way to read a graduated cylinder?

Igneous rocks are formed from magma that has cooled and solidified. These rocks are found near plate boundaries with intense thermal energy from within Earth.

Glycine is a highly conserved amino acid residue in proteins (i. e., it is found in the same position in the primary structure of related proteins). Which of the following reasons is the most likely explanation for this observation

Leon has procrastinated, and is cramming in an attempt to memorize a great deal of material for his final exams. Finished at last, he goes to bed. Unfortunately, his next-door neighbor has a noisy, barking dog.

We are trying to determine the possible modes of inheritance for some particular human disorder. We have a very small pedigree for this disorder.

What is the stimulus that causes the ear to respond as sense organs?

Experimental inquiry: what can you learn about the process of science from investigating a cricket's chirp?

The production of pink flowered plants from a cross between a red flowered plant and a white flowered plant is an example of A) multiple alleles. B) complete dominance. C) incomplete dominance. D) codominant inheritance.

List three examples of physical properties.

Which of these is true of the cytoplasm of an unfertilized egg? see concept 18.4 (page 380) ?