Four of the five answers listed below are
functions of parenchyma tissue. Select the
EXCEPTION.
a. support
b. heal wounds
c. store food
d. conduct photosynthesis
e. secretions
A
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Based on the pedigrees that you have generated, does the inheritance of cystic fibrosis appear to be related to the sex of the offspring?
a. Yes b. No
(a) Describe by labeled diagram the structural components of the lac operon in E. coli
(b) State the function of the lac regulator gene. (c) State the function of ?-galactosidase in the lac system. (d) Show by diagram the manner in which lactose brings about transcription of the three structural genes of the lac operon. (e) Explain why certain mutations in the regulator gene (I-) of the lac system result in maximal synthesis of ?-galactosidase, permease, and transacetylase even in the absence of the inducer (lactose).
The organism in the accompanying figure is a representative of the:a
phylum Hemichordata. b. phylum Echinodermata. c. phylum Chordata. d. subphylum Urochordata. e. subphylum Cephalochordata.
A characteristic of arthropods that has allowed for their great success is the presence of ________
A) bilateral symmetry B) an endoskeleton C) a brain D) specialized segments