Biology, 05.10.2019 15:50 chayaharroch03
Which of the following describes a way in which bacteria are harmful to humans?
a. some vitamins, such as vitamin k, are made by bacteria in the human gut.
b. some common foods, such as yogurt and swiss cheese, are made using bacteria.
c. some human diseases, such as cholera and dysentery, are caused by bacteria.
d. some medicines, such as erythromycin and tetracycline, are made by bacteria.
Answers: 1
Biology, 22.06.2019 00:40
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.
Answers: 1
Biology, 22.06.2019 02:30
What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.
Answers: 1
Biology, 22.06.2019 13:00
Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.
Answers: 3
Biology, 22.06.2019 17:30
In the first stage of the nuclear fuel cycle the spent fuel must be transported, processed, and disposed of properly. true or false
Answers: 2
Which of the following describes a way in which bacteria are harmful to humans?
a. some...
a. some...
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