When do the fontanels typically close?
Answer: by 2 years of age
You might also like to view...
What is lost when acetyl-CoA enters into the Krebs cycle?
a. pyruvate b. coenzyme A c. fructose bisphosphate d. oxaloacetate e. citrate
Answer the following statements true (T) or false (F)
1.Veins are the vascular bundles inside of a leaf. 2.Root hairs increase the absorptive surface area of a root. 3.In woody plants, the vascular cambium produces xylem and the cork cambium produces phloem. 4.Chemicals that are vital to the metabolism, growth, and reproduction of plants are called essential elements. 5.Carbon, hydrogen, and oxygen only account for about 50% of the dry weight of a plant.
Many scientists believe that the evolution of multigene families, such as the genes for hemoglobin, is a result of which type of genetic rearrangement?
A) Duplication B) Deletion C) Inversion D) Reciprocal translocation E) Nonreciprocal translocation
Two major types of protein secondary structures are referred to as:
a. amino and carboxyl. b. ? helix and ? sheet. c. elementary and primary. d. residual and permanent. e. ionic and covalent.