What are two reasons why the terrestrial planets formed closer to the sun after the supernova event that initiated the formation of the solar system? a.) they are made of denser objects, which can condense at relatively high temperatures. b.) they contain lightweight materials that condense in areas of relatively low radiation. c.) they are made of heavier elements, which have a stronger gravitational attraction to the sun. d.) they are relatively small in size, so the sun’s gravity has a strong influence on them. e.) they have gaseous surfaces, which is ideal in those areas of high radiation near the sun.

A & C

Explanation:

During creation of the solar system, the materials with  higher melting and boiling point within the nebulae were able to coalesce close to the sun because they are less volatile. These materials also happen to be denser. Denser materials have more mass and therefore pulled on more by the gravitational forces of the sun. The more volatile material such as gases was able to coalesce further from the sun –where the gases can cool below boiling and melting points-  to form the gas giants such as Jupiter.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set