The right answer is they are a major part of a food chain
An invertebrate is an animal that has no verbal spine or other internal bones. Insects, spiders, molluscs and crustaceans belong to this group. Their lifestyle, diet and habitat are very diverse. They live on land, in the sea or in fresh water. Some fly like insects. They are the prey of the upper trophic level.
<span>If a solution has a perfectly neutral ph, then it will have a pH value of 1. pH and hydronium ions are related in a logarithmic function. Therefore,
pH = - log (H+)
7 = - log (H+)
H+ = 10^-7 M
Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Answer:
Louis Pasteur demonstrated that cells can only arise from pre-existing cells.
Explanation:
The contributions of Louis Pasteur are one of the most remarkable in the history of humanity. Before Pasteur performed the experiments that revolutionized the cell theory, most people believed in the theory of <u>Spontaneous Generation</u>, which <u>stated living organisms could arise from non-living matter.</u>
However, in the 18th century, <u>Pasteur performed a series of experiments that disproved the theory of Spontaneous Generation</u>. By using using covered and non-covered flasks with broth, he demonstrated that cells were only able to grow in the broth if it was not properly covered, that is, if the air was exposed. This illustrated that cells couldn't arise from non-living matter but the opposite: cells can only arise from pre-existing cells. This was an extremely significant contribution to the cell theory.
<span>Hemophilia A is an X-linked recessive disease caused by a lack of a coagulant, or blood clotting agent, called factor VIII (factor 8). This is caused by a mutation in a gene on the X chromosome called F8. If a father is affected, his daughters will be carriers of hemophilia A and his sons will be unaffected. If a mother is an unaffected carrier, each daughter has a 1 in 2 chance (i.e., 50%) of being an unaffected carrier and each son has a 1 in 2 chance (i.e., 50%) of being affected with hemophilia A.</span>
Answer:
Nucleic acids, specifically DNA
Explanation:
Nucleic acids are macromolecules made out of units called nucleotides, each of these nucleotides is made up of three parts (you can identify them in the image I added):
- Nitrogenous base (nitrogen-containing ring structure)
- A five carbon sugar
- One phosphate group
Nucleic acids come in two varieties, DNA and RNA, in eukaryotes, DNA is broken up into a number of very long, linear pieces called chromosomes, these chromosomes contain tens of thousands of genes that provide information on how to make a particular product needed, <em>this means it holds cell information in a coded form.</em>
I hope you find this information useful and interesting! Good luck!