Question

Treponema pallidum is the single-celled organism that causes syphilis, an STD. This organism is shaped like a corkscrew & contains no nucleus or organelles. Plasmodium malariae is the single-celled organism that causes malaria. (They hitch rides on mosquitoes to infect people.) This organism is spherical with a nucleus & several different organelles. Treponema pallidum must be a ________ & Plasmodium malariae must be a ________.

a. prokaryote; prokaryote
b. prokaryote; eukaryote
c. eukaryote; eukaryote
d. eukaryote; prokaryote

Answer 1

Treponema pallidum, the organism that causes syphilis, is a prokaryote. Plasmodium malariae, the organism that causes malaria, is a eukaryote.

Step-by-step explanation:

Treponema pallidum is the single-celled organism that causes syphilis, an STD. This organism is shaped like a corkscrew and contains no nucleus or organelles, indicating that it is a prokaryote. In contrast, Plasmodium malariae is the single-celled organism that causes malaria. It is spherical with a nucleus and several different organelles, which classifies it as a eukaryote. Therefore, Treponema pallidum must be a prokaryote and Plasmodium malariae must be a eukaryote.