Question

question 2 1 pts phospholipids of the plasma membrane are arranged in a single layer with polar heads facing outwards. around a central layer of cholesterol. as a bilayer with their nonpolar tails sandwiched between the polar heads as a bilayer with their polar heads sandwiched between the nonpolar tails. question 3 1 pts this membranous organelle contains oxidase and catalase enzymes. golgi apparatus lysosome rough endoplasmic reticulum mitochondria peroxisome question 4 1 pts which type of junction is formed when membrane channels of adjacent plasma membranes adhere to each other? tight junction cell junction desmosome gap junction

Explanation:

• Question 2: Phospholipids in the plasma membrane form a bilayer. The polar heads face the aqueous environments (inside and outside the cell) and the non - polar tails are sandwiched between them due to their hydrophobic nature.
• Question 3: Peroxisomes are membranous organelles that contain oxidase and catalase enzymes which are involved in breaking down hydrogen peroxide and other oxidative reactions.
• Question 4: Gap junctions are formed when membrane channels (connexons) of adjacent plasma membranes adhere to each other, allowing for the passage of small molecules and electrical signals between cells.

Answer:

• Question 2: as a bilayer with their nonpolar tails sandwiched between the polar heads
• Question 3: peroxisome
• Question 4: gap junction