12. It has been said that bacteria are essential for the existence of life on Ea

Question

12. It has been said that bacteria are essential for the existence of life on Earth. Which of the following would be the essential function served by bacteria? a) Control of insects b) Directly provide food for humans c) d) Cause disease e) Produce human growth requirements such as insulin Decompose organic material and recycle elements 13. Which of the following is not part of a study of microbiology? a) Bacteria b) Fungi c) Viruses d) Insects e) Helminths 14. Use this typical bacterial growth curve to answer questions TIME Which section shows a growth phase where the number of cells dying equals the number of cells dividing? a) A b) B c) C d) D e) A and C a B Which phase(s) of the graph illustrate(s) a logarithmic change in cell numbers? a) A and C b) B and D c) A and B d) C and D e) B 15.

Explanation / Answer

(12)

C.decompose organic material and recycle elements

(13)d.insects

Study of insects is called entomology

(14)c.C

C represents stationary phase where growth rate is exactly equal to the death rate

(15)b.B and D

B represents log phase of growth and D represents death phase where the number of viable bacterial cells decreases exponentially

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.