Primary immunodeficiency diseases
A) develop later in life.
B) are detectable close to birth.
C) may be caused by malnutrition.
D) are never associated with genetic defects.
E) are sometimes caused by severe stress.
B
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Charles Yanofsky helped decipher the genetic code working with the ________ biosynthesis genes in ________.
A) leucine; Salmonella enteritidis B) phenylalanine; Klebsiella pneumoniae C) tryptophan; Escherichia coli D) glycine; Serratia marcescens
Which process occurs in the nucleus in eukaryotic cells?
1.transcription 2.translation 3.protein synthesis 4.formation of polypeptide bonds
Four of the five features listed below are
characteristic of adult sea stars. Select the exception. a. spiny skin b. tube foot c. water-vascular system d. bilateral symmetry e. ampulla
__________ fills spaces between cells. Fill in the blank(s) with the appropriate word(s)