Carbohydrates
Explanation:
Judging by the content of her note, we can satisfactorily say that Nadia is taking notes on carbohydrates.
Carbohydrates are bifunctional families of organic compounds.
- Carbohydrates are naturally occurring organic compounds containing carbon, hydrogen and oxygen. The ratio of hydrogen to oxygen is 2:1.
- They are usually taken in as energy sources for the body.
- When reduced to simple sugars like glucose, they release their chemical energy.
- They are the main source of energy for the body.
There are two types of carbohydrates;
- Simple carbohydrates are made up of simple sugars like glucose.
- Complex carbohydrates are cellulose and glucose.
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Answer:
A tetrad is a four part structure formed during the prophase I of meiosis I which is formed by the homologous chromosomes which is composed of two identical chromatids.
The tetrad formation takes place when a proteinaceous meiosis-specific nuclear structures called synaptonemal complex is formed between two homologous chromosomes which mediates the tight associations of the homologous chromosomes.
The synaptonemal complex consists of two ladder like lateral elements which attaches the chromatin of the homologius chromosomes. The central region of the synaptonemal complex is composed of the transverse filaments and the central element which bridge the space between the the lateral elements.
This attachment of the chromatin to the synaptonemal complex mediates the chromosome pairing and form tetrad.
D
The name of the enzyme RNA polymerase
Answer:
about 5 billion years ago
Explanation:
Our solar system formed about 5 billion years a go from a dense cloud of interstellar gas and dust.
Answer:
More frequent and severe weather
Higher temperatures are worsening many types of disasters, including storms, heat waves, floods, and droughts. A warmer climate creates an atmosphere that can collect, retain, and drop more water, changing weather patterns in such a way that wet areas become wetter and dry areas drier.
