How are mutations prevented during dna replication? a. dna polymerase checks dna for errors. b. trna molecules check the amino acids for errors. c. sister chromatids check the order of the bases. d. three extra copies of all chromosomes are made.

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above