Which statement is true?

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.

The part of the nephron provides initial filtering of the blood in the urinary system.

Choose thyroid, parathyroid, or the adrenal gland and choose one disease affecting this part of the en-docrine system.

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants