Developing embryos are found in the __________ of the female
a. uterus
b. oviduct
c. urethra
d. placenta
A
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Which of the following characteristics of eukaryotic gene expression regulation is also true in bacteria?
A. Posttranscriptional regulation is prominent because transcription is separated from translation in space and time. B. Transcriptional activation is associated with changes in chromatin structure. C. Many genes are regulated at the level of transcription initiation. D. The transcriptional ground state is restrictive.
Which of the following is considered the key innovation that started chordates along the evolutionary path that led to vertebrates?
A. a flexible rod to which muscles are attached, which allowed lateral movement of the back B. an internal endoskeleton C. a skin covering the entire body to prevent desiccation D. a hard shell encasing the body E. amniotic egg
Which of the following correctly describes the long-term responses of populations following the fire? a. The grasses eventually declined back to their original size and the other populations graduallygrew back to their original sizes
b. The grasses eventually grew back to their original size and the other populations eventuallydeclined back to their original size. c. All populations eventually declined. d. All populations eventually increased.
If you hear a researcher refer to a microbiome, what can you infer? Choose all that apply.
A. The microbiome inhabits a specific habitat. B. The microbiome lives within an animal's body. C. The microbiome includes a biofilm. D. The scientist has full genome sequences for the main microbial species. E. The microbiome includes multiple bacteria, archaea, fungi or protist species. F. The researcher has live cultures of the major species, to study in the lab.