What is a sheet-like layer of cells with no extracellular matrix in between?
A. Connective tissue
B. Adhering junction
C. Tight junction
D. Basement membrane
E. Epithelial tissue
Answer: E
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____ square is a useful diagram to show the results of a F1 x F1 cross
Fill in the blank with the appropriate word.
Judah Folkman used which model to discern the relationship between tumor growth and angiogenesis?
A) rabbit eye B) thymus tissue C) bone marrow D) mouse skin E) in vitro cells
Which statement is true?
a. Feathers are waterproof because they secrete cellulose. b. Trabeculae are small bones found in the wings. c. Both beaks and feathers are composed of keratin. d. Feathers help to radiate excess body heat.
A single eukaryotic gene can produce two different forms of a protein, one that is membrane bound and one that is secreted. Which of these mechanisms allows a single gene to produce two different proteins from one primary transcript?
A) alternative splicing B) gene divergence C) gene duplication D) exon shuffling E) gene rearrangement