What is the modern term for what Darwin called "descent with modification"?
Answer: Evolution
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Metabolism refers to only those reactions that release energy.
Answer the following statement true (T) or false (F)
Sharks are able to survive having high levels of urea in their cells because
a. urea stabilizes proteins. b. urea does not affect proteins. c. trimethylamine oxide counteracts the negative effects of urea. d. urea counteracts the unfolding of proteins by trimethylamine oxide. e. urea unfolds proteins that were improperly folded by trimethylamine oxide.
What is the closest parallel in animal structural levels of complexity to the branches, buds, flowers, seeds, and fruits of flowering plants?
A. Subcellular, specialized organelles. B. Bone cells, muscle cells, skin cells, nerve cells. C. Muscle tissue, connective tissue, nervous tissue, epithelial tissue. D. Heart, lungs, stomach, kidney, reproductive organs. E. Digestive system, reproductive system, skeletal system.
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.