The correct answer for the question "A student looks at a slice of tissue on an unlabelled microscope slide. the student concludes that the tissue is not from an animal because the cells in t<span>he tissue have" is D. Cell walls. When we compare animal and plant cells, only plant cells have cell walls. Cell walls are formed because of cellulose. </span>
A. Pressure receptors in the stomach walls signal fullness or emptiness
Atom, organelles, molecules, and cell
Im pretty sure the answer is d but not 100% sure
C
<em>[From ck12.org] </em><u>"An organ can be part of more than one organ system. For example, the ovaries produce hormones, which makes them a part of the endocrine system; the ovaries also make eggs, which makes them a part of the reproductive system as well."</u>
