A 22-year-old previously healthy man presents complaining of a month of fever, red eyes, and joint pain. Physical exam reveals brownish-red macules with hyperkeratotic crusted centers on the palms of his hands. He was recently treated for chlamydial urethritis. What is the most likely diagnosis?
A. Coxsachkievirus infection.
B. Henoch-Schonlein purpura.
C. Kaposi sarcoa.
D. Reactive arthrits.

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

Give the biological term for: structures that display characteristics of living organisms only within living cells