What causes vertigo? What causes motion sickness?
What will be an ideal response?
A stroke, an inner ear infection, or loose particles in the semicircular canals cause vertigo, which is a sensation that the world is moving or spinning around.
Mismatched signals cause motion sickness. When the body's balancing system detects motion while the eyes see no motion, the mismatched signals can cause nausea.
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Indicate the order of the point mutations in the rII region.
Shown below are the maps of a series of rII- deletion strains (1–5). The deleted region is indicated as (......) and the intact region as ______. Note that strain 5 carries two different deletions.
1 ___________(...........)_______________
2 _________________(...........)_________
3 (.....................)_____________________
4 ________________________(................)
5 _____(..........)________________(.........)
rII- phage strains A-E have point mutations in the rII region. E.coli K(?) cells are coinfected with one phage that has a deletion and one phage that has a point mutation. The presence of wild-type progeny phage is assessed by the presence (+) or absence (o) of plaques.
A) CADBE
B) DEBAC
C) BADCE
D) ABDEC
E) CEADB
Additional question (answer with TRUE or FALSE) :
The test described here depends on recombination.
A newer method of reviving victims of sudden cardiac arrest, called ________ , relies only on chest compressions.
a. cardiocerebral resuscitation b. CPR c. defibrillating drugs d. cardiopulmonary resuscitation e. automatic external defibrillators
Besides cell walls, features often found in plant cells but not in animal cells are:
A) water-filled central vacuoles. B) cell membranes. C) spindle-shaped centrioles. D) mitochondria. E) nuclei.
In the correct order, what are the names of the fluid leaving the capillaries, going into the space between cells and then into the lymphatic capillaries?
A) lymph, plasma, and interstitial fluid B) lymph, interstitial fluid, and plasma C) interstitial fluid, lymph, and plasma D) plasma, interstitial fluid, and lymph E) plasma, lymph, and interstitial fluid