Transcription factors function to help move ribosomes along the mRNA
Indicate whether the statement is true or false
FALSE
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Today, the use of deep sea submersibles like ________ allows marine scientists to collect samples and observe the deepest habitats in the ocean
a. Sea Explorer b. Alvin c. Calvin d. Alistair
Plants and algae most recently shared a common ancestor 480 million years ago, and plants colonized land shortly after that. In sexual reproduction, an alga simply releases gametes into the water, and the current carries the sex cells to another individual. What adaptation arose in gymnosperms and angiosperms that allowed reproduction on dry land and over great distances?
A. development of stomata B. production of lignin C. development of vascular tissue D. production of pollen E. production of a cuticle
Which word best describes the structure of the cell membrane?
A.) bi-layer B.) rigid C.) impermeable D.) nonpolar
What part of the blastocyst will develop into the human embryo and eventually into a fetus?
A. archenteron B. inner cell mass C. chorion D. blastopore E. trophoblast