The tropical rain forest ecosystem near the amazon river contains hundreds of food chains. which term refers to the combination of all food chains within an ecosystem? food web trophic level primary food chain ecosystem

In rats, gene B produces black coat color if the genotype is B-, but black pigment is not produced if the genotype is bb.

Which element is the basis for all living things and can combine with other elements in many ways? phosphorus carbon oxygen sulfur

19. A plant is noticed to have curled leaves and stunted growth. Which nutrient is it most likely missing?

Why are glass cylinders preferred over plastic cylinders for conducting lab experiments? A) they are attractive and light B) they are cheap and abundant C) they are heat and chemical resistant

In general, colder temperatures would tend to reduce the fluidity of membranes. In response, cells can adjust the composition of their membranes to maintain the proper degree of fluidity.

What did darwin call the "preservation of favorable variations and the elimination of injurious variations"?

A mutation in GLUT4 changes the Kt value from 5 mM (wild type) to 3 mM (mutant). The velocity of glucose entry into a mutant cell would be higher than a cell expressing the wild type version at a blood glucose concentration of 5mM. A) TRUE. B) FALSE.

Hich of the following is an advantage of asexual reproduction? A. No mate is required. B. It increases genetic diversity. C. More time is required. D. More energy is required.

Question 18 Which term best describes the diagram below? Eye color Blood type . Hair color Growth

Why did mendels use characteristics that only had 2 options? how did this aid in the development of his theories?