Which statement best describes the leaf structures of monocots and dicots? Dicots have narrow leaves with parallel veins, and monocots have broad leaves with a network of veins. Monocots have narrow leaves with parallel veins, and dicots have broad leaves with a network of veins. Dicots have narrow leaves with a network of veins, and monocots have broad leaves with parallel veins. Monocots have narrow leaves with a network of veins, and dicots have broad leaves with parallel veins.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

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