-While Exploring a Sulfur Spring, a Scientist Finds a New

question 29

Multiple Choice

-While exploring a sulfur spring, a scientist finds a new organism. It is single- celled, lacks a cell wall, has a few internal membranes, and appears to have set up a symbiotic relationship with a species of free- living purple sulfur bacteria that are common in the spring. There are no other organisms within it. This new organism would be considered a(n)

• A) prokaryote.
• B) aerobe.
• C) eukaryote.
• D) living intermediate.

Identify the unique characteristics and body plans of sponges compared to other animals.

Describe the evidence supporting the bilaterians as a distinct clade and understand the concept of bilateral symmetry.

Understand the phylogenetic relationships among animal taxa, particularly the concept of sister groups and outgroups.

Explain the functional specialization of sponge cells and the significance of choanocytes.

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Definitions:

Total Revenue

The total amount of money generated by a company from its business activities, before any expenses are subtracted.

Fixed Costs

Expenses that do not change with the level of production or sales in the short term, such as rent, salaries, and insurance.

Variable Costs

Costs that vary directly with the level of production or sales, such as materials and labor.

Corporate Tax Rate

The percentage of a corporation's profits that is paid to the government as tax.