There are a number of chromosomes on a given gene; all of these actively code for proteins.
chromosomes contain many genes; not all genes are actively coding.
dna contains a number of segments that code for specific proteins; these segments are chromosomes.
the segments of genes found on chromosomes are made of rna, which codes for protein synthesis.

Which describes the effect of prolonged stress on blood pressure? it causes blood pressure to decrease. it has little or no effect on blood pressure. it causes the heart to pump with more force. it causes blood pressure to increase.

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses. b) the infected individuals happened to be infected with all three virus types. c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly. d) the human was likely infected with various bacterial strains that contained all three rna viruses.

How do you imagine the heart of a person with prolonged high blood pressure might look different from the heart of someone with normal blood pressure?