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Evgesh-ka [11]
2 years ago
7

Which structure helps in the facilitated diffusion of ions, polar molecules, or large molecules across the plasma membrane?

Biology
1 answer:
____ [38]2 years ago
6 0

Answer:

membrane proteins

In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers

Explanation:

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A carrier mother (XHXh) of hemophilia marries a normal father(XHY). *Use allele letter H What are the mothers and fathers genoty
ZanzabumX [31]

Answer: The mother of the man can be either XHXH or XHXh and pass her normal allele to the son and his father can be either XHY or XhY, he only passes his Y chromosome. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Explanation:

Hemophilia is an inherited bleeding disorder in which the blood does not clot properly. This can cause bleeding either spontaneously or after an injury.

<u>It is related to the X chromosome and it is recessive for females</u>, this mean they need both affected alleles to develop the trait. <u>Males only need one recessive allele because they only have one X chromosome</u>. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

If the mother is a carrier, her genotype is XHXh, being XH the normal allele and Xh the affected allele. She does not have hemophilia because she has a dominant allele. The father is XHY, so he does not have the disease because his only allele is normal (dominant)

The mother of the man can be either XHXH (she can only pass a normal allele) or XHXh and pass her normal allele to the son (in this case, the recessive allele is not inherited by chance.) His father can be either XHY or XhY, he only passes his Y chromosome which is not related to the disease. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

4 0
3 years ago
A person with darker skin produces more what ?
Brilliant_brown [7]
A person with darker skin produces more melanin. Those are the dark brown pigments that come from your skin, hair, or eye color.

Hope that helps. -UF aka Nadia
7 0
3 years ago
Read 2 more answers
What process occurs to in the first stage of celluar respiration
Irina-Kira [14]

What process occurs to in the first stage of celluar respiration?

The first stage is called glycolysis. Glycolysis is a process that uses sugar to create ATP molecules

7 0
3 years ago
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Homologous Structures Relate to...
ICE Princess25 [194]
The answer is,Different animals with similar structures:)
3 0
3 years ago
The Binding Immunoglobulin Protein (BiP) is a molecular chaperone that is essential for the translocation of secreted peptides i
Evgen [1.6K]

Answer:  Protein folding and oligomerization

Explanation:

Binding immunoglobulin protein (BiP) is a vital protein present in humans essential for the translocation of secreted peptides.

BiP is  a molecular chaperone which is present in lumen of ER (endoplasmic reticulum) which binds to the new protein and then translocat into the ER. The protein in ER is maintained under subsequent condition and important for protein folding and oligomerization (conversion of a  monomer or group of monomer into an oligomer).

Several other functions of BiP are:

  1. ER translocation
  2. ER-associated degradation (ERAD)
  3. UPR pathway

Hence,  BiP is a chaperone, it is important for protein folding and oligomerization.

7 0
4 years ago
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