Fibroblasts organize the collagen of the extracellular matrix by ______________
(a) cutting and rejoining the fibrils.
(b) processing procollagen into collagen.
(c) twisting fibrils together to make ropelike fibers.
(d) pulling the collagen into sheets or cables after it has been secreted.
(d)
You might also like to view...
Which one of these statements about the hereditary lineage of the Y chromosome is not correct?
A. Ninety-four percent of the Y chromosome consists of sequences in which genetic linkage is complete. B. Because of complete linkage, each hereditary lineage of Y chromosomes is separate from every other lineage. C. Mutations along any given Y chromosome are often lost over time. D. Each unique combination of nucleotides along a Y chromosome constitutes a Ychromosome haplotype. E. Mutations that occur along the Y chromosome are completely linked to any past or future mutations along that chromosome.
Molecules are made up of ______.
A. atoms B. cells C. organs D. organisms E. populations
where does the signal (in TR) come from and what does it produce?
What will be an ideal response?
The first land plants were bryophytes, which then branched into ferns, gymnosperms, and finally angiosperms. What advantage did gymnosperms have over ferns?
a. Gymnosperms produce pollen and do not require water to reproduce b. Gymnosperms go through alternation of generations c. Gymnosperms have a vascular system, which allowed them to grow taller d. The gymnosperms can grow larger gametophytes e. Gymnosperms can produce flowers and fruits to aid in seed dispersal