Endosperm is:
A. sperm after it has entered the archegonium
B. sperm produced internally within antheridia
C. sperm cells enclosed within pollen grains
D. tissue stored in seeds that provides nutrition for embryos
E. sperm produced at the end of the flowering season
D. tissue stored in seeds that provides nutrition for embryos
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Is a virus considered alive?
A. Yes, it possesses all of the requirements for life. B. Yes, it possesses enough of the requirements for life to be considered living. C. No, it does not possess any of the requirements for life. D. No, it does not possess all of the requirements for life.
The recombinant virus assay (RVA) uses which type of amplification methodology?
a. Transcription-mediated amplification (TMA) b. Nucleic acid sequence-based amplification (NASBA) c. Strand displacement amplification (SDA) d. Reverse transcription polymerase chain reaction (RT-PCR)
In which organ does the smooth ER inactivate drugs and harmful metabolic byproducts?
a. brain b. kidney c. liver d. heart e. spleen
What is the function of the nuclear pore complex found in eukaryotes?
A) It regulates the movement of proteins and RNAs into and out of the nucleus. B) It synthesizes the proteins required to copy DNA and make mRNA. C) It selectively transports molecules out of the nucleus, but prevents all inbound molecules from entering the nucleus. D) It assembles ribosomes from raw materials that are synthesized in the nucleus.