Each tissue is an organized assembly of cells held together by cell-cell (more...) In epithelial tissue, by contrast, cells are tightly bound together into sheets called epithelia. The extracellular matrix is scanty, consisting mainly of a thin mat called the basal lamina, which underlies the epithelium.
C. Decomposers return nutrients to the soil.
C. Prokaryotes
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Answer:
Primary active transport.
Explanation:
Active transport may be defined as the movement of particles against the concentration gradient. This is the energy driven process that requires ATP to transport the molecules.
Two main types of active transport are primary active transport and secondary active transport. The calcium has been moved towards its region of higher concentration ( sarcoplamsic reticulum) from its region of lower concentration (cytosol), this transport is against the concentration gradient. The ATP is used by direct hydrolysis. Hence, it is the primary active transport.
Thus, the answer is primary active transport.
Air quality has an impact on the health of our lungs and the entire respiratory system. The cells of the lung tissue can be damaged by air pollutants such as ozone, metals and free radicals. Ozone can cause damage to the alveoli - air sac in the lungs where exchange of oxygen and carbon dioxide is produced.