Which of the following was used in the 1940s to analyze amino acids that make up proteins? A. Genetic engineering. B. Chromatography. C. Radioactive tracers. D. X-ray diffraction

a physical property is what an element of compound is made up of and what it can react with true or false

In female pigs, what will be the role of the mammary papillae

What little light there is in the deep ocean is provided by

A cell with 46 chromosomes inside itsnucleus goes through one round of mitosis and cytokinesis. How manychromosomes are inside each of the two resulting nuclei?

What is the best explanation for the microvilli on the apical surface of the proximal convoluted tubule (pct) ?

According to "Life Without Gravity," why can astronauts' muscles become weak? A. Without gravity, the blood is rerouted from the legs to the head. B. Without gravity, the body "grows" by as much as several inches. C.

What type of igneous rock has two distinct grain sizes indicating two stages of cooling

A certain type of diploid organism has 38 chromosomes. how many chromosomes would a gamete of this organism have?

Griffith, in his 1928 experiments, demonstrated that bacterial strains could be genetically transformed. The evidence that DNA was the "transforming principle" responsible for this phenomenon came later.

Is the organism Fern extinct