Answer:
provide structure and support for cells. On a larger scale, they also allow the body to move. These proteins bind and carry atoms and small molecules within cells and throughout the body.
Answer:
Gravitropism is a tropism in which gravity is the stimulus
Explanation:
Answer:
facilitated diffusion
Explanation:
Facilitated diffusion is the process of movement of molecules or ions across a biological membrane via specific transmembrane integral proteins. Carrier proteins and channel proteins are involved in facilitated diffusion. The movement of molecules and ions in passive transport occurs due to a concentration gradient.
The correct answer is B. Two oppositely-charged ions
Explanation:
In chemistry, ionic bonds only occur between ions oppositely charged, this means one of the ions has to be positively charged and the other has to be negatively charged. This is because there is a natural attraction between particles with different charges and this leads to the formation of chemical bonds. Also, this bond implies the transfer of electrons between ions. In this context, this type of bond can only occur with oppositely-charged ions. Moreover, particles with the same charges either negative, positive, or neutral do not experience attraction and cannot form ionic bonds.
c) Some species are part of the human natural flora
Explanation:
Please refer to attachment for more information. I tried to write it here, but it was showing an error.
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