The cell membrane. (It also could be cytoplasm because it supports the organelles. But I think it is the cell membrane because it says barrier, and the cell membrane is the cell's barrier between it and the outside of the cell.)
The cell membrane is the outer most layer of the animal cell. It is selectively permeable, so it lets good things in and keeps bad things out. It also helps larger things that the cell needs to get in such as glucose by the process of endocytosis.
Answer:
- Crystallization (cooling or solidification)
- Erosion and sedimentation (lithification, burial and deposition)
- Metamorphism (Melting due to heat and pressure)
Explanation:
In rock cycle, there are three important processes that changes one type of rocks into another type. Those processes are:
- <u>Crystallization:</u> It is a process that takes place under the earth surface where magma cools down and is hardened to form igneous rocks. This process is also called freezing of rocks.
- <u>Erosion and sedimentation:</u> The rocks on the surface of earth are broken into smaller fragments called sediments that are formed by weathering of rocks. These sediments are then carried either by wind or water to different places and settles at some place to form another type of rock named sedimentary rocks.
- <u>Metamorphism:</u> Metamorphism takes place under the earth surface where extreme heat changes the mineral texture of the rock but does not melt it. such rocks are named as metamorphic rocks.
Answer:
The chance that their <u>child will not be able to roll his tongue will be zero</u>.
The chances to have a child with tongue rolling ability is 100%.
Explanation:
In complete dominance, a dominant gene completely manifests over a recessive gene. If tongue rolling is a dominant trait, this means that the gene that expresses this trait is dominant over the recessive one that does not allow the person to roll the tongue.
If the gene for tongue rolling is called T, then a person that is homozygous dominant for this trait will have the following genotype: TT. If the person is heterozygous for this trait, the genotype will be Tt. And if a person is homozygous recessive for the trait, this person´s genotype will be tt.
When two homozygous dominant individuals mate, their chances to have a child with tongue rolling ability is 100%.
This is:
Parental) TT x TT
Gametes) T T T T
Punnet Square) T T
T TT TT
T TT TT
F1) Genotype: 100% TT, or 4/4 TT
Phenotype: 100% Tongue rolling capable.
Answer:
I go with C which says the dark mice are hard to be seen against the dark. Because of this the dark mice lived to reproduction age and reproduce more dark mice.
The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells.
