Answer: 4
Explanation: There are 4 valence electrons in group 14, the Carbon group.
Let's discuss first about difference between micro- and macro-nutrients. Micronutrients are those which are needed in small quantities and their function is not that vast. But macronutrients are the ones which control all the metabolic cycles of the cell, so they are needed in large quantities. This is the basic difference between the two terms.
Proteins are macro-nutrients because they are needed in large amount, as they are involved in some of the most important functions of our body. For example, proteins act as enzymes, involved in immunity, maintaining homeostasis of the body, etc. That is why they are considered as macronutrients.
Answer:
1. The 2 bases forming each rung of the 'ladder' snap apart. This is caused by an enzyme that passes along the strands, 'unzipping' it
2. Spare nucleotides (in the nucleus of the cell) attach themselves to the 'broken rungs' to repair the break. Each repairing nucleotide is identical to the broken one
3. As each 'broken rung' is repaired, two 'ladders' form, that is 2 identical strands of DNA. The 'repairing' is really the process of replica
Explanation:
Hope this helps!
Answer:
D
Explanation:
Matthew is not expressing the trait because he must be carrying the recessive gene of Achondroplastic dwarfism compared to Jane who is a dwarf with the genotype Aa
<span>Prokaryotes have magnetite-containing structures, nucleoid (their version of a nucleus), fimbriae.
Animals have lysosomes.
Plant cells have chloroplasts (make the plant cells green, produce energy for plants), photosynthetic membranes (produce energy for plants), cell well.
Flagella can be found in prokaryotes and animal cells but for a simpler biology class, I would put it with prokaryotes.</span>