Biosafety cabinets (BSC)
- BSCs have HEPA filters that can achieve 99.97% to 99.99% efficiency in filtering the most penetrating particles (0.3μm). This means that 0.3μm are the most difficult to filter.
Why is that so? Why is it easier to filter particles smaller and larger than 0.3μm?

Describe speciation of the galapagos island finches in terms of geographic isolation

First problem: for each of the following sequences, fill in the mrna sequence, the amino acid sequences, and the rrna anticodonsthat have been left blank.a) dna: atácga aatcgcgatcgcggcgattoggb) mrna: ? c)codon: ? d)anticodon: ? e)amino acids: ? second problem: see abovea) dna: titaoggccatgaggga a tagtig gillarib)mrna: ? c) codon: ? d)anticodon: ? e) amino acids: ? third problem: see abovea) dna: tacgggcctat acgctactactca tgsatcggb) mrna: ? c)codon: ? d)anticodon: ? e)amino acids: ?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes