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“Which type of macromolecule is most directly responsible for functions such as membrane transport, signaling, and many structural support roles in cells?”

“A molecule is large and polar, so it cannot pass directly through the phospholipid bilayer. Which structure would most likely help move the molecule across the membrane?”

“Which symptom would most likely occur in a person with this mutation? Researchers discover a mutation in a protein found in the membranes of certain intestinal cells. Normally, this protein helps move nutrients from digested food into the cells lining the intestine. People with the mutation are still able to digest food normally, but many nutrients remain inside the intestine instead of moving efficiently into the body.”

Which statement best explains why phospholipids and membrane proteins are both necessary for plasma membrane function?

Which type of bond forms when electrons are shared unequally between atoms?

“During starvation, stored fats are broken down into smaller molecules to release energy. This process is:”

“Which organelle modifies proteins, including adding carbohydrates to some proteins, before sorting and packaging them for transport?”

Which statement best explains why the hydrophobic portions of phospholipids face inward in a plasma membrane?

“Which statement best demonstrates the concept of emerging functions in this scenario? Researchers discover a mutation in a protein found in the membranes of certain intestinal cells. Normally, this protein helps move nutrients from digested food into the cells lining the intestine. People with the mutation are still able to digest food normally, but many nutrients remain inside the intestine instead of moving efficiently into the body.”

“During exercise, which organ systems work most directly together to increase oxygen delivery to tissues?”