Joints are found only in the appendicular skeleton.

a. true
b. false


Answer: b. false

Biology & Microbiology

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Which of the following is incorrectly paired?

A) intrauterine insemination; donated sperm is placed in the woman's reproductive tract B) in vitro fertilization; fertilization occurs in a laboratory dish C) ICSI; DNA from an immobile sperm is injected into an oocyte D) GIFT; fertilization occurs in a laboratory dish

Biology & Microbiology

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 ______.

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

Biology & Microbiology

Which is (are) the principal substance(s) that

regulate(s) thigmotropism? a. auxin and ethylene b. gibberellin c. abscisic acid d. salicylic acid e. none of these

Biology & Microbiology

Which of the following statements is false?

A) There are more than 60 different kinds of amino acids present in cells. B) The R group of amino acids differs from one amino acid to another. C) Only around 20 amino acids are used in protein synthesis. D) Equal amounts of D- and L-amino acids are found in cells. E) An amino acid has an N-terminus, a C-terminus, and an R group.

Biology & Microbiology