How many chromatids does a chromosome have before dna replication?

Which of the following would not occur if the accessory organs of the digestive system were not present? A. Carbohydrate absorption in the intestine B. Water absorption in the intestine C. Bile production D. Pepsin production

Which are characteristics of fungi? Check all that apply. live in warm environments usually made of hyphae usually reproduce with spores usually autotrophic usually found in deserts live in damp environments

Which discovery did not contribute to cell theory? All living things are made of cells. All cells require ATP for energy. Cells are the basic unit of function in living things. All cells come from other cells.

Teratogens: select one: a. are environmental agents that can harm the embryo or fetus. b. are most damaging during the fetal period of development. c. are only those substances the mother's body produces. d.

What are three events that build up land through the constructive process?

In frogs muscle tissue is usually grouped into large

after the brain receives information from the body's sensory receptors, what is the next step in responding to this information?

What does the endosymbiont theory explain about the origins of plant and animal cell

Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1 if the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by

What is the average for the following measurements 7.1 g, 9.8g, 2.3g, 8.5g, 7.4g, 5.7g