Biology, 20.11.2020 20:40 Nessakona1
What is the function of the protein keratin?
to provide support and structure for cells in hair, skin, and nails
to fight infections caused by bacteria and viruses
to increase chemical reaction rates in the digestive system
to transmit chemical signals throughout the body
Answers: 2
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Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?
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Which of the following is not a defining characteristic of plants?
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The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen
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What is the function of the protein keratin?
to provide support and structure for cells in hair, sk...
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