Biology MCQ The Cellular Level of Organization Calcium ions are typically kept at very low internal concentrations in cardiac muscle cells; however, calcium is stored in specialized organelles so that it is available to trigger contractions on a regular basis. How must calcium be transported out of the cytoplasm and into these organelles?

Calcium ions are typically kept at very low internal concentrations in cardiac muscle cells; however, calcium is stored in specialized organelles so that it is available to trigger contractions on a regular basis. How must calcium be transported out of the cytoplasm and into these organelles?

04:35 The Cellular Level of Organization

Calcium ions are typically kept at very low internal concentrations in cardiac muscle cells; however, calcium is stored in specialized organelles so that it is available to trigger contractions on a regular basis. How must calcium be transported out of the cytoplasm and into these organelles?

A) active transport
B) facilitated diffusion
C) passive diffusion
D) phagocytosis

Answer: A

Biology MCQ

Calcium ions are typically kept at very low internal concentrations in cardiac muscle cells; however, calcium is stored in specialized organelles so that it is available to trigger contractions on a regular basis. How must calcium be transported out of the cytoplasm and into these organelles?

Calcium ions are typically kept at very low internal concentrations in cardiac muscle cells; however, calcium is stored in specialized organelles so that it is available to trigger contractions on a regular basis. How must calcium be transported out of the cytoplasm and into these organelles?

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