Answer:
Heterogeneous mixtures are substances not mixed together.
Explanation:
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Answer:
Carbon dioxide, methane, and water vapour are the most important greenhouse gases.
Answer:
(a) can be used to bend epithelial sheets into tubes.
Explanation:
The adherens junctions are cell-cell adhesions localized in places exposed to abrasion or mechanical stress, close to the apical membrane in epithelial cells is one of these locations. Some of their functions are the initiation and stabilization of cell-cell adhesion, <em>they join the actin cytoskeleton to the plasma membrane to form adhesive contacts between cells that contribute to the folding and bending of epithelial sheets,</em> therefore they can mediate adhesion and signaling.
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answer: please refer to my word document which i wrote and attached in my answer.i hope it helps you i am so sorry if it wasnt what you wanted. PLEASE DOWNLOAD MY DOCUMENT AND OPEN IT YOU WILL FIND MY WORK .I ALSO ADDED A DIAGRAM OF THE DIGESTIVE SYSTEM TO HELP YOU UNDERSTAND MORE.
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Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms.
(At some point, a eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion. Eukaryotic cells containing mitochondria then engulfed photosynthetic prokaryotes, which evolved to become specialized chloroplast organelles).
