Answer:
there was no world war eleven
If you know how meiosis and mitosis work, this answer is actually quite simple. Here's a little recap on how meiosis and mitosis work before I dive into your question.
Mitosis:
Basically what mitosis is doing is replicating your cells. Mitosis uses somatic cells, otherwise known as skin/body cells. These are just your everyday cells in your body basically, except for sex cells. It's actually what dust is made of. In mitosis, you begin with 1 cell, that has 46 chromosomes. This cell then duplicates, and then divides, leaving you with 2 cells with 46 chromosomes each. Now as a repeat, these cells that have duplicated are IDENTICAL.
Now onto meiosis.
Meiosis:
Meiosis uses gametic cells, instead of somatic like mitosis uses. Gametic cells are sex cells (sperm and egg). In meiosis, you start out with a cell that has 23 chromosomes from mom, and 23 chromosomes from dad. This cell then duplicates and divides like in mitosis, and then divides a second time. What you are left with is 4 haploid daughter cells. These cells are NOT identical, because a whole lot of other stuff is also going on during this process in which I did not explain since this is the short version. Basically, the sperm and egg combine, and then produce genetically different sets of chromosomes from each parent.
I hope this helped clarify and answer your question. If you are still confused, I have included some of my biology notes on the topic which also includes some pictures if that helps you understand a little better. There are also a whole bunch of Youtube videos on meiosis and mitosis you can watch which can also help if you are still confused on these processes and why they are different and what is even going on during them.
Also, if you are wondering what my color coding means in my notes, pink/red is for vocab words/definitions and blue is just topics. I also used the blue and pink to differentiate between the chromosomes from your mom and from your dad.
Answer:
The ball and socket joint is the one that can perform all those movements.
Explanation:
Ball and socket joint, also know as spheroid joint are types of joints where the part of the bone that articulates with the other bone has a spheroidal shape or ball shape that fits in the depression of the other bone, which means that they are a synovial enarthrosis joint. It has a wide range of movements because it can move in the transverse, vertical, and sagittal axes. An example of this joint is the shoulder, between the scapula and the humerus.
Answer:
Decrease
Explanation:
Gene expression, which involves the production of useful gene products, occurs in two stages: transcription and translation. Transcription synthesizes a mRNA transcript by copying the information in the nucleotide sequence of a DNA. This mRNA sequence is then read during translation to synthesize amino acids (proteins) in a process called translation.
Translation is initiated when a transfer RNA (tRNA) binds to the binding sequence of the mRNA in the ribosome. However, gene expression (translation) in bacteria are regulated by short non-coding nucleotide sequences called small RNA or sRNA. sRNA's are regulators that inhibits translation by binding to the initiation site on the mRNA molecule, thus preventing the binding of the tRNA for translation to proceed.
If a sRNA binds to the binding site of a mRNA coding for an enzyme, it means the rate at which the enzyme (protein) will be produced will be low or not at all. Hence, there will be a decrease in the synthesis of that particular enzyme.
Answer:
A.it has a different number of protons.