<h2>
Hey Emma Here<em>
!</em></h2>
Answer:
Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.
<h3>Bye Have A Nice Day<em>!</em></h3>
C. Desert
A. The tilt of the Earth's axis as it circles the Sun.
Phospholipids have phosphate group heads that are hydrophilic while the fatty acid tails are hydrophobic.
They are able to form cell membrane as they automatically arrange themselves in the required pattern in water because of these properties.To form membranes, these line up next to each other with their heads on the outside of the cell and their tails on the inside. A second layer of phospholipids also forms with heads on the inside of the cell and tails facing away.
In this way a double layer is formed with phosphate group heads on the outside, and fatty acid tails on the inside. This double layer, called a lipid bi-layer, forms the main part of the cell membrane.
Answer:
One allele of tallness form one of the parent and one allele for dwarfness from another parent.
Explanation:
Mendel took two plants one was homozygous dominant(TT) for height trait and the other was homozygous recessive(tt) for height trait. The homozygous dominant individuals was tall and recessive was short.
So when they are crossed during fertilization the offsprings got one allele for tallness from the homozygous dominant parent and one allele for shortness from the homozygous recessive parent.
T T
t Tt Tt
t Tt Tt
So all the offsprings are heterozygous for the height trait that means all the individuals will be tall in appearance as they have one dominant trait for tallness.
There are several types of stem cells that can be used for different purposes.
- Embryonic stem cells. Embryonic stem cells come from human embryos that are three to five days old. ...
- Non-embryonic (adult) stem cells. ...
- Induced pluripotent stem cells (iPSCs) ...
- Cord blood stem cells and amniotic fluid stem cells.
