Eukaryotic Chromosomes are composed of DNA, Histone and Nonhistone Proteins Histones: H1 H2A. H2 B, H3, H4. The later 4 form nucleosomes(100 A)and thus called core histones. H1 plays a role in forming 300 A superhelix Histones are rich in basic amino acids Nonhistone proteins play a variety of functions
What is Packaging? 1. A definition of packaging Packaging is best described as a coordinated system of preparing goods for transport, distribution, storage, retailing, and use of the goods 2. The many things a package might be asked to do Packaging is a complex, dynamic, scientific, artistic, and controversial business function Fundamental function of packaging: contain protects/preserves transports informs/sells
Directions: This part is to test you listening ability. It consists of 3 sections Section a: Conversations Directions: In this section, you will hear 10 short conversations. At the end of each mersation, a question will be asked about what was said. Both the conversations and the questions will be spoken only ONCE. After each question there will be a pause During the pause, you must read the four choices marked A), B), C) and D), and decide
3.1 What is learning? Are they instances of learning? (1) A young child takes his first steps. (2) An adolescent male feels a strong attraction to certain females. (3) A child feels anxious when he sees the doctor coming with a needle. (4) Long after learning how to multiply, a girl realizes on her own that another way to multiply by 5 is to divided by 2 and multiply by 10(e.g. 428×5 can by figured as follows:428/2=214 ×10=2140)
