Indique si los sistemas son abiertos, cerrados o aislados:
1. Gas que se expande en un cilindro provisto de un embolo.
2. Caldera de una máquina térmica
3. Cohete .
4. Vaso con agua .
5. Termo lleno de agua caliente
6. Estadio .
7. Una planta desalinizadora de agua de mar .
8. Helio contenido en un globo que se calienta bajo la acción de la radiación solar. .
9. Lata de gaseosa dentro de una cava de icopor o de anime .

answer; ///(b) it is composed of four protein chains and four heme groups;

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )