The solenoid structure is a term used to describe which of the following levels of chromosome condensation? a. 300nm-fiber
b. 10nm-fiber
c. 30nm-fiber
d. 1400nm-condensed chromosome

The correct answer is: c. 30nm-fiber.

Explanation:

Eukaryotic DNA molecules condense themselves in various steps to achieve a smaller size that will make it easier for the genetic information to be distributed when cell division happens.

This condensation generates different structures depending on the level of packing. The DNA double-strand without any condensation consists of a 2nm fiber. When this 2nm fiber is compacted with proteins called histones, a structure called nucleosome, with an 11nm fiber appears. These nucleosomes begin to pack themselves again, and this is how the solenoid is formed.

The solenoid structure consists of a 30nm fiber. While the nucleosome makes the DNA 7 times smaller, the solenoid can make it 40 times smaller.

lipid

explanation:

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.