What sensitizes an individual to an allergen?

According to Chargaff's rule, base pairing in DNA should resemble which of the following? A = T; C = G A = C; T = G A = G; T = U A = U; C = G

According to the law of conservation of matter, in any food chain we know that A) the quantity of matter in producers and consumers is always equal. B) matter is created at the start of a food web and destroyed in the end.

Phase of photosynthesis where light energy is converted to atp

Which of the following best describes the climates of Europe and North America during the 1.8 million years of the Quaternary period? A. Hot and Dry B. Cool and Rainy periods followed by droughts C. Warm and Mild D.

Which of the following is true about light absorption in plants? Choose all that apply. many different pigments are involved in light absorption The green wavelength of light is the least important for plants Chlorophyll molecules mostly absorb

Name three characteristics of the cells that make up the muscle tissue in the heart.

Creationists criticize the idea of natural selection as a circular argument, or tautology, claiming "The fittest are those that survive, and survival is how fitness is defined." Why is our definition of natural selection not tautological? a.

Atoms combine to form what? A. elements b. proton c. molecules

A blastocyst is a group of cells that forms after a human egg is fertilized. The blastocyst consist of two types of cells. Some of these cells develop into all of the cells of a growing fetus. What do the other cells develop into? A.

Select the atoms that are likely to lose electrons to form cations: A. Iodine (I) B. Lithium (Li) C. Bromine (Br) D. Potassium (K)