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Luda [366]
3 years ago
13

In the digestive system, Vitamin B12 bound to intrinsic factor (B12-IF) is absorbed through the epithelium of the small intestin

e and delivered into the extracellular fluid on the basolateral membrane of the epithelium by a process called transcytosis. This process begins on the apical surface of the epithelial cell when the B12-IF binds to receptors, and is engulfed into the cell. What is the type of membrane transport at the apical surface of the epithelium?
Biology
1 answer:
Soloha48 [4]3 years ago
5 0

Answer:

Endocytosis.

Explanation:

Endocytosis may be defined as a type of cellular process by which the substance are brought into the cell. The phagocytosis and pinocytosis are involved in the endocytosis.

Since, the substance has been entered into the cell through transcytosis. The substance is engulfed after binding to its receptor and entered into the cell. This type of membrane transport is involved in the process of endocytosis only.

Thus, the answer is endocytosis.

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In cats, curled ears result from an allele, Cu, that is dominant over an allele cu, for normal ears. Black color results from an
just olya [345]

Answer:

Explanation:

Cross : ggCuCu X GGcucu --------Parents

F1 progeny : GgCucu

Two of the F1 cats mate :

Cross : GgCucu X GgCucu

Gametes :

Gg X Gg = GG, Gg, Gg, gg

Cucu X Cucu = CuCu, Cucu, Cucu, cucu

1/4 GG X 1/4 CuCu = 1/16 GGCuCu (black - curled ears)

1/4 GG X 2/4 Cucu = 2/16 GGCucu (black - curled ears)

1/4 GG X 1/4 cucu = 1/16 GGcucu (black - normal ears)

2/4 Gg X 1/4 CuCu = 2/16 GgCuCu (black - curled ears)

2/4 Gg X 2/4 Cucu = 4/16 GgCucu (black - curled ears)

2/4 Gg X 1/4 cucu = 2/16 Ggcucu (black - normal ears)

1/4 gg X 1/4 CuCu = 1/16 ggCuCu (gray - curled ears)

1/4 gg X 2/4 Cucu = 2/16 ggCucu (gray - curled ears)

1/4 gg X 1/4 cucu = 1/16 ggcucu (gray - normal ears)

Answer : (i). 9/16 black cats, curled ears; 3/16 black cats, normal ears; 3/16 gray cats, curled ears; and 1/16 gray cats, normal ears.

An F1 cat mates with a stray cat that is gray and possesses normal ears :

Cross : GgCucu X ggcucu

Gametes :

Gg X gg = Gg, Gg, gg, gg

Cucu X cucu = Cucu, Cucu, cucu, cucu

2/4 Gg X 2/4 Cucu = 4/16 GgCucu (black - curled ears)

2/4 Gg X 2/4 cucu = 4/16 Ggcucu (black - normal ears)

2/4 gg X 2/4 Cucu = 4/16 ggCucu (gray - curled ears)

2/4 gg X 2/4 cucu = 4/16 ggcucu (gray - normal ears)

Answer : (i). 1/4 black cats, curled ears; 1/4 black cats, normal ears; 1/4 gray cats, curled ears; 1/4 gray cats, normal ears.

6 0
3 years ago
Will a female only inherit a sex linked disorder if her father suffers from the same disorder, and if her mother is a carrier fo
muminat

Answer:

The female will not inherit a sex linked disorder if her father suffers rather "have chances or the disorder if the mother is the carrier" for the disorder.

Explanation:

A female has 2 X chromosome, which she got from her parents each. The females will get the disorder or the defective gene if the mother has defective X chromosome or if the father is carrying the same disorder from his father(grandfather). In both the cases the female will be the carrier and have chances to inherit the defect to the offspring. But the female will  not affect as the  male will. As the female has 2 X chromosomes, and hence the dominant X will compensate for the error in recessive X.

5 0
3 years ago
Which option explains why genes are sections of chromosomes, but chromosomes are not made up of genes?
Nitella [24]

Answer:

A chromosome is made of a very long strand of DNA and contains many genes (hundreds to thousands). ... The genes on each chromosome are arranged in a particular sequence, and each gene has a particular location on the chromosome (called its locus).

Explanation:

8 0
3 years ago
Describe the role of plants in the movement of water through the water cycle
Artist 52 [7]

answer:B ..............

6 0
3 years ago
Blood ph and cerebrospinal fluid ph are affected by carbon dioxide content. how does this enable the organism to sense a disturb
frutty [35]

The answer is B. The cardiac, respiratory, and vasomotor control centers are in the medulla. This means that the medulla controls heart rate, blood pressure, breathing, and the size of the body's blood vessels. They have chemoreceptors, pH sensing structures that detect levels of carbon dioxide in the blood and adjust the breathing rate accordingly.






3 0
3 years ago
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