In the above diagram, C represents ____
a. large diameter blood vessels
b. capillary beds
c. the zone of diffusion of gases and nutrients
d. the heart
e. capillary beds and the zone of diffusion of gases and nutrients
ANSWER: d
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What simple tissue composed of living cells is responsible for supporting rapidly growing plant parts such as young
stems and leaf stalks?
a. vascular tissue b. dermal tissue c. collenchyma tissue d. sclerenchyma tissue e. parenchyma tissue
Starting translation at the authentic (correct) start codon is essential for translation of the correct polypeptide
Errant translation starting at the wrong codon, or even at the wrong nucleotide of the start codon, may produce an abnormal polypeptide and result in a nonfunctional protein. Compare and contrast the mechanisms used by bacteria and eukaryotes to identify the authentic start codon during translation initiation.
Details of small internal cell structures are best visualized with a
A. Transmission electron microscope B. Bright-field microscope C. Dark-field microscope D. Scanning electron microscope E. Fluorescent Microscope
Neural crest cell originates from dorsal part of (i)________________. It migrates by undergoing (ii)________________ , followed by differentiation.
a) (i) neural plate, (ii) Epithelial-Mesenchymal Transition b) (i) neural tube, (ii) Epithelial-Mesenchymal Transition c) (i) neural plate, (ii) Mesenchymal-Epithelial Transition d) (i) neural tube, (ii) Mesenchymal-Epithelial Transition