Autoimmune diseases occur when the immune system is unable to discriminate "self" from "nonself."
Indicate whether the statement is true or false
TRUE
You might also like to view...
Hox genes are a family of transcription factors that regulate development throughout the animal kingdom. Studies of Hox genes in mice and Drosophila showed that many Hox genes are conserved between both species, and several Hox genes duplicated into new genes with novel functions within mice. Some Hox genes have even lost all function. Hox genes provide an example of which of the following? Check all that apply.
_____ orthologs _____ paralogs _____ heterologues _____ pseudogenes Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about homology? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Answer the following statements true (T) or false (F)
1. Damage to the seminal vesicles would prevent sperm from becoming motile. 2. Erectile dysfunction can be treated by drugs that increase levels of nitric oxide. 3. FSH stimulates the activity of Leydig cells and LH stimulates the activity of Sertoli cells. 4. A human female has the largest number of primary oocytes at the onset of puberty. 5. FSH secreted by the pituitary stimulates fluid secretion into the antrum of the follicle.
Which of the following is an example of the use of the binomial system devised by Linnaeus?
A. O157:H7 B. Escherichia coli C. Enterobacteriaceae D. Enterobacteriales
Striated muscle has light and dark bands. The light bands are called ________, whereas the dark bands are called ________
A) Z lines; M lines B) H zones; M zones C) A bands; I bands D) I bands; A bands E) M lines; A bands