Leaf abscission:a
occurs as a response to increased temperatures.
b. occurs as a response to dry conditions.
c. involves the formation of a tendril at the base of the petiole.
d. occurs year-round on deciduous plants.
e. does not occur in conifers.
B
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The whole-genome shotgun approach for collecting the data used to determine the nucleotide sequence of microbial genomes uses
A. powerful computers and specialized software and automated sequencing of random fragments of genomic DNA. B. automated sequencing of random fragments of genomic DNA. C. powerful computers and specialized software. D. Maxam Gilbert sequencing of cloned restriction fragments.
Which of the following organs of the endocrine system secretes several hormones and stores two
hormones produced by the hypothalamus? a. pituitary gland b. pancreas c. pineal gland d. adrenal glands e. thyroid gland
Which of the following is an incorrect pairing?
A. primary structure; amino acid sequence B. secondary structure; disulfide bridges C. tertiary structure; covalent bonds D. quaternary structure; two or more polypeptides E. secondary structure; ?-pleated sheets
Which of the following is the site of photosynthesis in cyanobacteria?
A) peroxisomes B) mitochondria C) photosynthetic membranes D) outer walls E) thylakoid lumens