Which of the following statements about enzymes are true? Select all that apply. a)an enzyme yields a specific product, whereas a non-biological catalyst may produce more than one product, and side reactions may occur. b)reactions occur at the active sight, which usually consist of a crevice on the enzyme's surface. c)both non-biological catalysts and enzymes show reaction specificity. d)generally, an enzyme is specific for a substrate. for example, thrombin catalyzes the hydrolysis of the peptide bond between Arg and Gly.
Getting both the digene HPV Test and a Pap offers the most peace of mind for women 30 and older -- the age group that is most at risk of cervical cancer. If you do not have HPV and your Pap is normal, you can be confident you do not have abnormal cells that could develop into cervical cancer without being detected.
The American Cancer Society Guidelines for the Prevention and Early Detection of Cervical Cancer. 1  All women should begin cervical cancer testing (screening) at age 21. Women aged 21 to 29, should have a Pap test every 3 years. HPV testing should not be used for screening in this age group (it may be used as a part of follow-up for an abnormal Pap test). Beginning at age 30, the preferred way to screen is with a Pap test combined with an HPV test every 5 years. This is called co-testing and should continue until age 65. Another reasonable option for women 30 to 65 is to get tested every 3 years with just the Pap test.