Is it true or false scientists must reapeat an experiment for it to be usefuk?

Which type of connective tissue is found in the papillary layer of the dermis and contains all of the cell types of connective tissue proper?

There is a gene in eukaryotes under the control of a transcriptional activator that ultimately regulates chromatin structure. This transcription factor requires dimerization to function.

What is an organisms niche determined by?

Desperation Here! Sternberg's theory of love includes: A) Infatuation B) Companionate love C) Romance D) All of the above

Which of the following is an example of human monosomy - Down syndrome, Klinefelter syndrome, Turner syndrome, none of the above

What is the main function of the large intestine? A. digestion of proteins B. absorption of nutrients C. breaking down complex carbohydrates D. removing water from undigested waste

Which type of environmental scientist is most likely to study how whales are affected by pollution? a. Hydrologist b. Toxicologist c. Ecologist d. Oceanographer

How did Francesco Redi disprove the idea of spontaneous generation? He showed that flies were not produced by meat. He showed that microorganisms are present in air. He showed that microorganisms cause disease. He showed that flies spread disease.

Of the millions of sperm who start the long journey to the egg, how many sperm are actually allowed to enter the egg?

A mineral leaves a gray trail when scraped against an unglazed porcelain plate. Which property of a mineral is being measured? A. luster B. streak C. color D. hardness