What is cartilage composed of?

osteocytes and calcium phosphate

collagen fibers and osteocytes

osteocytes and glycoproteins

chondroitin and calcium phosphate

chondroitin and collagen fibers

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.