Other molecules such as proteins, starch and sugar are simply too large to diffuse across the membrane. Sometimes, some of these large molecules are transported across the cell membranes by carrier proteins; this does not require energy and as a result is a form of passive transpor
The answer would be: <span>transgenic
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Bacteria can be altered to produce a specific protein by introducing a sequence of DNA into their genes. This bacteria is called genetically modified bacteria. Bacteria that producing insulin called transgenic because they have genes of other species transplanted on them.
The earth's surface features are constantly changing in a process known as weathering and erosion. Weathering would happen when rocks would break physically like frost shattering while erosion happens when sediments and rocks are moved from one place to another by agents like water, gravity, wind and ice. These two occurrences are the cause of the constant change of the Earth's surface.<span />
A scientist who studies living things is called a biologist
