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sweets387 sweets387
wrote...
Posts: 29
Rep: 2 0
11 years ago
Jock suffered pain in his lower back because an intervertebral disk has ruptured. Likely where was the disk located?
   A. Between lumbar vertebrae.   
   B. Between sacrum and coccyx.   
   C. Between lumbar vertebrae and coccyx.   
   D. Between cervical vertebrae.   
   E. Between sacral vertebrae.
 
I am stuck between A and C


Which of the following is not characteristic of both desert and tundra?
   A. Few or no trees.   
   B. Usually occur far from the sea.   
   C. Low precipitation.   
   D. Plants have access to water only periodically.   
   E. Short growing seasons.

#43
If global warming were to reduce rainfall from 100 cm annually to 20 cm annually in an area of taiga at 30 degrees north latitude, what kind of ecosystem would replace the taiga?
   A. Deciduous forest.   
   B. Desert.   
   C. Arctic tundra.   
   D. Savanna   
   E. Grassland.

Question 41 of 60    1.667 Points
Alonso is studying a population of rare orchids and he is concerned about factors that may limit orchid numbers. Which of the following would be most likely to operate as a density-independent limiting factor?
   A. Aphids.   
   B. Sudden cold temperature.   
   C. Grazing.   
   D. People picking orchids.   
   E. Nutrient-limited soil.
Question 40 of 60    1.667 Points
Which of the following is an example of exponential growth over a two-year period from a starting point of 100 animals?
   A. 100>110>115.   
   B. 100>150>200.   
   C. 100>105>106.   
   D. 100>110>121.   
   E. 100> 150>175

Question 27 of 60    1.667 Points
Jock suffered pain in his lower back because an intervertebral disk has ruptured. Likely where was the disk located?
   A. Between lumbar vertebrae.   
   B. Between sacrum and coccyx.   
   C. Between lumbar vertebrae and coccyx.   
   D. Between cervical vertebrae.     
   E. Between sacral vertebrae.

Question 15 of 60    0.0 Points
Eunice is extracting interleukin-1 from tissue cultures. Under what conditions in an animal would interleukin-1 be produced?
   A. When complement attaches to antigens   
   B. When macrophages have engulfed germs   
   C. When cytotoxic T cells attack virus-infected cells   
   D. When helper cells recruit B cells


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sweets387 Author
wrote...
11 years ago
Question 14 of 60   1.667 Points
Jeanne has just caught a cold. Which immune component would likely not have an effect for one or two weeks?

 

   A. Dendritic cells   
 

   B. Interleukin   
 

   C. Macrophages     *
 

   D. Suppressor cells.   
 

   E. Lymphokine   
Question 17 of 60   1.667 Points
Larry has acidosis, a high level of hydrogen ions in the blood, due to failure of his kidneys to remove surplus hydrogen. What region of his nephrons are most likely malfunctioning?

 

   A. Hairpin loop.   
 

   B. Distal convoluted tubule.   
 

   C. Collecting duct.  *   
 

   D. Descending limb.   
Question 21 of 60   1.667 Points
Baldev has multiple sclerosis, a disease in which nerve cell insulation becomes faulty. If Baldev is having memory problems, what is likely failing?

 

   A. Interneurons.   
 

   B. Spinal motor neurons.   
 

   C. Oligodendrocytes.   *
 

   D. Dendrites.   
 

   E. Schwann cells.

   
Question 25 of 60   1.667 Points
Dirk noticed that his color vision was poor at night, presumably because he was dependent on rod cells. Why are rod cells light sensitive?

 

   A. There is a high ratio of ganglions to sensory cells.   
 

   B. They lie around the edges of the retina.   
 

   C. They lie in the sclera rather than in the retina.   *
 

   D. There is a high ratio of sensory cells to ganglions.   
 

   E. They do not require a blood supply

   
Question 29 of 60   1.667 Points
Which of the following would you classify as an endoskeleton?

 

   A. The ribs of a fish.   *
 

   B. The muscles of an earthworm.   
 

   C. The shell of a crab.   
 

   D. The shell of an armadillo.   
 

   E. The shell of a clam.

   
please check to see if I am right? I am not sure about these I am stuck on these please let me know your answers
wrote...
Educator
11 years ago
Jock suffered pain in his lower back because an intervertebral disk has ruptured. Likely where was the disk located?
   A. Between lumbar vertebrae.   
   B. Between sacrum and coccyx.   
   C. Between lumbar vertebrae and coccyx.   
   D. Between cervical vertebrae.   
   E. Between sacral vertebrae.

Rightwards Arrow Between lumbar vertebrae.
wrote...
Educator
11 years ago
Which of the following is not characteristic of both desert and tundra?
   A. Few or no trees.   
   B. Usually occur far from the sea.   
   C. Low precipitation.   
   D. Plants have access to water only periodically.   
   E. Short growing seasons.

Rightwards Arrow Plants have access to water only periodically

I'd guess this, but not 100% sure.
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