Pentameric IgM activates complement up to 20-fold more effectively than does the hexameric form of IgM.
Answer the following statement true (T) or false (F)
False
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Let’s look at town A that has an average nightly temperature of 22 degrees Celsius. Some
species of pythons have been released by overwhelmed owners and are breeding in more southern locations. These snakes require a nighttime temperature no lower than 25 degrees Celsius. In how many years will the pythons be able to survive in town A?
a. in 60 years b. in 600 years c. in 1200 years d. in 1500 years
Female gonads are regulated by __________ hormone and luteinizing hormone. Fill in the blank(s) with the appropriate word(s)
Strobili are
a. gametangia. b. cone-shaped spore sacs. c. homospores. d. underground stems. e. horizontal stems.
Why is hydrogen oxidation widespread in the tree of life?
a. The hydrogen couple is extremely electronegative. b. Most microogranisms are aerobes. c. It is necessary to create reducing power. d. Phototrophs may be found in every domain.