A human liver cell is very different in structure and function from a nerve cell in the same person. This is best explained by the fact that

Which organism has the following characteristics: Cell wall, autotrophic, unicellular, and eukaryotic. What kingdom does it most likely belong in

Name at least one way that forests are economically valuable and one way that they are ecologically valuable.

What are spinal nerves?

Which statement is least likely to support the Endo symbiotic theoryk

In 2002, Trask et al. published a study showing that a high frequency of HIV transmissions in Lusaka, Zambia occurred between marriage partners.

Which of the following brings amino acids to the ribosome for use in translation? 1. rRNA 2. tRNA 3. mRNA

What is the process which cells in your body become different types of cells?

Which of the following statements shows an example of operant conditioning? A.) A chicken learns that if it pecks on a button, a food pellet will be released into its cage. B.) Pavlov taught a dog to salivate every time it heard a bell. C.

A scientist has several specimens from the same time period from several thousand years ago. Which two specimens should he study so that he can learn about the amount of rainfall at that time and the kinds of plants that grew then?

Which is a characteristics of both plants and animals A. life cycles B. learned behaviors C. Produce their own food D. Reproduce using seeds