Use the Following to Answer the Questions Below

question 57

Multiple Choice

Use the following to answer the questions below:
On the left are characteristics of various reactions that occur in the chain elongation phase of fatty acid biosynthesis. Identify the step (1 through 4) of the chain elongation process to which each characterization applies using the response list on the right. Responses on the right may be used more than once or need not be used at all.

-CO₂ is a product.

• A) step 1
• B) step 2
• C) step 3
• D) step 4

---

Definitions:

Blood Flow

The circulation of blood within the circulatory system, which transports oxygen and nutrients to the cells and carries away waste products.

Continuous Capillaries

The most common type of capillaries, characterized by a continuous endothelial lining, allowing for the exchange of water, ions, and small molecules.

Simple Squamous

A single layer of flat cells, found in locations where processes such as filtration and diffusion take place.

Fenestrae

Small openings or pores, especially in the capillary endothelial cells, that allow for exchange of substances between the blood and surrounding tissues.