Answer:
small molecules easily pass through the phospholipids in the cell membrane
 
        
             
        
        
        
I believe the answer is a and d and b not 100% sure
        
             
        
        
        
Answer:
50%
Explanation:
This question involves a gene coding for eye color in humans. The allele for brown eyes (B) are dominant to blue eyes (b). This means that blue-eyed individual will possess genotype: bb. 
According to this question, a blue-eyed man (bb) has children with a brown-eyed woman (B_) whose mother has blue eyes (bb). Since the mother of the brown-eyed woman has a blue eye, this means that the woman will be heterozygous for brown eye (Bb). 
Hence, the parents in this question will cross as follows: blue eyed man (bb) × brown-eyed woman (Bb). The offspring/children will have the following genotypes (see attached punnet square); Bb, Bb, bb, bb. 
Based on the question, 2/4 = 1/2 of the children will be heterozygous for the eye color trait. That is, ½ × 100 = 50%. 
 
        
             
        
        
        
Answer:
Carbohydrates
Explanation:
Carbohydrates are made up of carbon, hydrogen, and oxygen make up carbohydrates. These biomolecules are the primary sources of energy of living things, including humans. They are found in living organisms in the form of sugars, fibers, and starches. There are different types of carbohydrates like monosaccharides, disaccharades, and polysaccharide.