Answer the following statements true (T) or false (F)
1) Plasmids are created exclusively in research laboratories and do not occur naturally.
2) Bacteria that live in extreme environments, such as thermal vents on the ocean floor, have evolved genes that allow them to use the resources within that environment.
3) All the genes in a species' core genome are located on the bacterial chromosome, whereas the genes of the pangenome are carried on plasmids.
4) Mapping genes by conjugation can be performed by interrupted-mating experiments in which conjugation is physically disrupted at 1-minute intervals.
5) Scientists can identify the gene mutated in a bacterial auxotroph by transforming the cells with a genomic library in which fragments of the auxotroph's genome have been cloned into plasmids.
6) Multidrug resistance is not a major health concern because new antibiotics are easily and frequently identified.
1) FALSE
2) TRUE
3) FALSE
4) TRUE
5) FALSE
6) FALSE
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In skeletal muscle, calcium ions are stored in the sarcoplasmic reticulum.
Answer the following statement(s) true (T) or false (F)
Which is NOT a checkpoint in the cell cycle?
A. the transition from G1 to S phase B. the transition from G2 to M phase C. the transition from M phase to G1 D. the beginning of M phase E. All of these choices are checkpoints in the cell cycle.
A protein that becomes marked in a sequence called the destruction box and is degraded by proteasomes is
a. tubulin. b. cyclin. c. Ras. d. cAMP-dependent protein kinase.
The greater diversity of mangrove forests in the Indo-West Pacific region compared to similar forests in the Atlantic-Caribbean region may be attributable to:
A) plant taxa invading mangrove habitats more frequently, possibly due to greater isolation of mangrove habitats. B) a much larger area of suitable mangrove habitat in the Indo-West Pacific region.