12 Questions
Which process moves substances across the cell membrane from an area of higher concentration to an area of lower concentration?
Facilitated diffusion
Which process requires metabolic energy in the form of ATP?
Active transport
What is the major example of active transport mentioned in the text?
Sodium-Potassium Pump
Which process uses the energy provided by a concentration gradient established by the active transport of one substance to transport other substances?
Secondary active transport
What is the function of microtubules in the cell?
Supporting the cytoplasm, assisting in cell division, and forming essential components of certain organelles
What is the main function of intermediate filaments in the cell?
Supporting the cytoplasm and determining cell shape
Why do cells with a large energy requirement have more mitochondria?
To perform essential functions such as helping to support the cytoplasm and providing energy to the cell
What is the primary function of microfilaments in the cell?
Enabling the cells to shorten or contract
Where are ribosomal components produced?
Nucleolus
Which organelle is involved in protein synthesis and has attached ribosomes?
Endoplasmic reticulum
Where do ribosomes exit the nucleus from?
Nuclear pores
What is the main function of the Golgi apparatus?
Modify, package, and distribute proteins and lipids
Test your knowledge of facilitated diffusion and active transport, which are two important processes for moving substances across the cell membrane. Explore concepts such as carrier-mediated transport and the role of ATP in these transport mechanisms.
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