Which statement is true?
a. Roots are well preserved in the fossil record.
b. Bryophyte rhizoids are larger and stronger than roots.
c. Vascular tissue appears to predate roots in plants.
d. The primary purpose of roots is water storage.
c. Vascular tissue appears to predate roots in plants.
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Samantha drank a lot of alcohol over many years and now suffers from this fatty degeneration of the liver
A) Large intestine B) Stomach C) Esophageal cancer D) Appendix E) Mouth F) Salivary glands G) Rectum H) Cirrhosis I) Gallbladder J) Small intestine
Which of the following is not a function of the complete digestive tract? a. Food enters and wastes leaves through the same opening
b. Mechanically moves digested material to the next segment. c. Breaks down food mechanically. d. Absorption of digested material through the lining of the gut. e. Secretion of digestive enzymes.
The structure that absorbs nutrients from the small intestines and delivers the nutrients in the blood to the liver is the
A. hepatic portal vein. B. hepatic portal artery. C. renal vein. D. None of the choices are correct.
In Southern blotting, DNA molecules are immobilized on
A) silicon chips. B) nitrocellulose membranes. C) agarose. D) gold beads. E) paper.