Answer:
<u>
They have hydrophilic heads and hydrophobic tails.</u>
Explanation:
Phospholipid membranes are comprised of a chain of lipids. These typically are arranged in a bilayer; the hydrophilic lipid heads are polar, and face outwards, while the hydrophobic tails are polar facing inwards.
The membranes are selectively permeable, and only allow the movement of small, non-polar molecules through the bilayer.
Answer:
C.
Explanation:
It is an output directly into the water.
The first steps of catabolism generally take place in the cytosol.
Glycolysis and pentose phosphate pathway are metabolic process that occurs inside of the cytosol. Other catabolic processes such as the citric acid cycle, electron transport chain, and oxidative phosphorylation all take place in the mitochondrial membrane.
The answer to this question is pyruvic acid.
This process is also known as the Embden-Meyerhof or glycolytic pathway and is undoubtedly the most common pathway for glucose degradation to pyruvate in the second stage of catabolism. It is found in all major groups of microorganisms and functions in the presence or absence of oxygen. Glycolysis occurs in the cytoplasmic matrix of prokaryotes and eukaryotes.
The pathway as a whole is divided into two parts: The initial 6 carbon stage and secondly, the 3 carbon stage.
One of the products, glyceraldehyde 3-phosphate, is converted directly to pyruvic acid in a five step process.
