Answer:
The correct statement concerning the cell membrane lipid molecules is that "energy is not expended during diffusion" (Option d)
Explanation:
Biological membranes are formed by two lipidic layers arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, and their hydrophobic tails against each other. Membranes are fluid, which means that molecules that form it have the capability to move through it.
Lipids can easily change places with other neighbor lipids by <u>lateral diffusion</u> in the same layer. This is passive diffusion, which means that it does not need energy to happen.
Lipids can also diffuse transversally to the other layer, but this kind of movement is not as easy as lateral diffusion.
There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.
Through this lipidic bilayer, there is also a passive transport of some particles from one side of the cell to the other which happens because of concentration differences.
The answer is true
The hint is "point-source"
Temperature is related to heat by science
The DNA of the samples is isolated, and then the mapping is carried out, which is done by equipment called "DNA Sequencers". With this, it is possible to compare the genomes and conclude to whom the hair belongs.
<h3>DNA in the hair?</h3>
In the case of hair, researchers can rely on these two types of DNA (nuclear and mitochondrial). However, according to the Easy-DNA Laboratory, a hair that is cut, unfortunately, does not contain any valid DNA nucleus. However, when the hair still contains the hair bulb (hair root) it is possible to extract the nuclear DNA, because in that region we have thousands of hair forming cells (keratinocytes).
With this information, we can conclude that the DNA can be analyzed and compared, arriving at who committed the bank robbery.
Learn more about DNA in brainly.com/question/264225
Answer: Abruptio<span> placentae; Placenta Previa </span>
Abruptio<span> placentae or placental abruption is the premature separation of the placenta from the uterus. Individuals having this abruption of the placenta experiences bleeding, uterine contractions, and fetal distress.</span>
Placenta Previa, on the other hand, occurs when the placenta lies low in the uterus and partially or completely <span>covers the cervical opening (cervix)</span><span>. </span>
