Which of these cells of the dermal tissue of plants prevent water loss and control gas exchange?

o phloem cells

O companion cells

O parenchyma cells

guard cells

Explain how is the process of photosynthesis central in sustaining life on Earth?

Is DNA made by connecting fragments of DNA with desired traits from different DNA sources.

How is matter conserved in the water cycle? a. Water absorbs energy and later releases the same amount of energy. b. People manage water resources, such as wells, so they do not run out of water. c.

Which of the following does not generally have the effect of increasing biodiversity

The Human Genome Project is devoted to mapping the general DNA sequence of our species. This could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases.

The cell membrane has many proteins embedded in it. These proteins have many different functions ranging from transport of materials to cell surface identity markers. True False

The secretions of the gallbladder, liver, and pancreas enter the

How do you think a DNA molecule makes a copy of itself?

Which type of molecule is fat? lipid carbohydrate protein nucleic acid

Explain how differences in the niche requirements of organisms can contribute to community patterns such as zonation