Which of the following can contribute to postoperative infections?
A) using syringes more than once
B) normal microbiota on the operating room staff
C) errors in aseptic technique
D) antibiotic resistance
E) All of the answers are correct.
E
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Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that _____
A) arthropods evolved before vertebrates did B) extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates C) ancestral arthropods must have been poorly adapted to aquatic life, and thus experienced a selective pressure to invade land D) vertebrates evolved from arthropods E) arthropods have had more time to coevolve with land plants than have vertebrates
The intracellular parasite Nanoarchaeum equitans has one of the smallest prokaryotic genomes. Why is the genome of N. equitans so small?
How is it possible that the genome of N. equitans contains more genes than that of Mycoplasma genitalium, which is actually 90 kbp larger? What will be an ideal response?
A gland that produces alkaline secretions that function to activate sperm and reduce the acidity of the female reproductive system. _____
A) Endometrium
B) Testis
C) Cervix
D) Uterus
E) Oviduct
F) Ovaries
G) Vagina
H) Seminal vesicle
I) Penis
J) Prostate gland
K) Vas deferens
L) Glans penis
Approximately ____ Y-linked genes have been discovered
a. 10 b. 20 c. 60 d. 80 e. 120