How can Leptospira interrogans be distinguished from other spirochetes?
A. It stains purple with the Gram stain.
B. One end of the bacterium looks like a question mark.
C. It is highly motile.
D. It can be found in multiple locations in the body.
E. It cannot be cultured on laboratory media.
Answer: B
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Filtration occurs in which section of a mammalian nephron?
a. glomerulus in the Bowman's capsule b. loop of Henle c. proximal tubule d. distal tubules e. peritubular capillary
The only way to meet the resource needs of future generations is through ____
a. sustainable resource use b. biological magnification c. creating conservation hotspots d. clear cutting and mining
e. increasing use of nonrenewable resourcesA person who cannot make enough of the plasma protein ________ might have problems with water balance
Fill in the blank(s) with correct word
Answer the following questions true (T) or false (F)
1. A population of salamanders migrates from a sand beach to a pebble beach and evolves over many generations from a solid color to speckled coloration. This process is called stabilizing selection. 2. If a species of bird with an intermediate beak size evolves into two varieties, one with large beaks and one with small beaks, this could result from disruptive selection. 3. Even through they are separate species, lions and tigers can interbreed.