Answer:
B
Explanation:
The Ames test is a bacteriological technique commonly used to determine if a particular chemical or substance can cause mutations. To achieve this, researchers use bacteria (commonly <em>Salmonella typhimurium</em>) as this bacteria strain is unable to grow in a medium that does not contain histidine (a very important amino acid in the biosynthesis of proteins). If the studied substance is able to cause mutations, bacteria will mutate, and they will be able to grow on that particular media even if they don’t have histidine for their metabolism. Therefore, if there are colonies growing, the chemical being tested is mutagenic.
I hope this clarify your inquiry.
Answer:
B, Kristen can find out the sex of her fetus using ultrasound as early as 14 weeks but most doctors schedule an ultrasound at around 18 to 21 weeks
Glycolysis, a process in which the body breaks down glucose via enzymes, giving energy to the body
Answer:
Chemotherapy employs drugs to kill cancer cells. Cell-mediated immunity and cytokine activity are thought to be responsible for destroying cancer cells. OK-432 reduced ascites volume and tumor burden in 60% of patients.
Explanation: