As (a)_____ can not pass through the non polar lipid bilayer, they require (b)____to facilitate their transport across the membrane.
(a) `{:((A),(B),"(C)"),("Non - polar","Polar","Transmembrane protein"):}`
(b) `{:((A),(B),"(C)"),("polar"," Non -Polar","Carrier protein"):}`
(c) `{:((A),(B),"(C)"),("polar"," Polar"," Transmembrane protein"):}`
(d) `{:((A),(B),"(C)"),("Non - polar","Non - Polar"," Carrier protein"):}`

Options

A. `{:((A),(B),"(C)"),("Non - polar","Polar","Transmembrane protein"):}`
B. `{:((A),(B),"(C)"),("polar"," Non -Polar","Carrirer protein"):}`
C. `{:((A),(B),"(C)"),("polar"," Polar"," Transmembrane protein"):}`
D. `{:((A),(B),"(C)"),("Non - polar","Non - Polar"," Carrier protein"):}`

Answer

To solve the question, we need to identify the correct terms that fit into the blanks based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Understanding the Nonpolar Lipid Bilayer**:
- The question states that something cannot pass through the nonpolar lipid bilayer.
- Nonpolar lipid bilayers are hydrophobic, which means they do not allow polar substances to pass through easily.

2. **Identifying (a)**:
- Since polar molecules cannot pass through the nonpolar lipid bilayer, we can conclude that (a) should be "Polar".
- Thus, (a) = "Polar".

3. **Identifying (b)**:
- The video mentions that polar molecules require assistance to cross the membrane. This assistance is provided by specific proteins.
- The transcript specifically refers to "carrier proteins" that facilitate the transport of polar molecules across the membrane.
- Therefore, (b) should be "Carrier protein".
- Thus, (b) = "Carrier protein".

4. **Finalizing the Answer**:
- Now we can fill in the blanks:
- (a) = "Polar"
- (b) = "Carrier protein"
- The completed statement reads: "As polar cannot pass through the nonpolar lipid bilayer, they require carrier protein to facilitate their transport across the membrane."

### Answer:
(a) Polar
(b) Carrier protein