A molecule called blank carries the genetic code from the nucleus into the cell cytoplasm

Match the cell adhesion or junction with the appropriate choice. Drag the terms on the left to the appropriate blanks on the rig

pav-90 [236]

Answer:

The missing options are:

A) protein subunits associated with gap junctions.

B) a type of adhesive junction connecting an epithelial cell to the basal lamina.

C) collection of fibrous intracellular attachment proteins.

D) create a permeability barrier.

E) button-like points of strong adhesion between two cells.

F) hollow cylinders associated with gap junctions.

G) type of adherens junction connecting cells with the extracellular matrix.

H) intermediate filaments associated with plaques.

I) collection of adherens junctions particularly associated with epithelial cells.

J) type of adhesive junction containing actin microfilaments.

K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms.

L) point of cytoplasmic contact between two cells.

M) anchors cytoskeleton of one cell with that of a neighboring cell.

Set of answers are:

A) protein subunits associated with gap junctions. Conexin

B) a type of adhesive junction connecting an epithelial cell to the basal lamina. Hemidesmosome

C) collection of fibrous intracellular attachment proteins. Plaque

D) create a permeability barrier. Tight junctions

E) button-like points of strong adhesion between two cells. Desmosome

F) hollow cylinders associated with gap junctions. Connexons

G) type of adherens junction connecting cells with the extracellular matrix. focal adhesion

H) intermediate filaments associated with plaques. Tonofilaments

I) collection of adherens junctions particularly associated with epithelial cells.

J) type of adhesive junction containing actin microfilaments. Adherens junctions

K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms. Cell junctions

L) point of cytoplasmic contact between two cells. Gap junction

M) anchors cytoskeleton of one cell with that of a neighboring cell. Adhesive junction

Explanation:

Connexin: is a transmembrane protein that forms the gap junctions, they are also called gap junctions proteins.

Hemidesmosome junctions: these types of junctions are in the epidermis, specifically between the epithelial cells and the basal lamina of the epidermis.

Plaque: they are part of the adherens junctions, they are fibrous proteins that are attached to certain points of the extracellular matrix.

Tight junctions: are junctions between two epithelia, they are very restrictive and do not allow the passage of soluble molecules creating a permeability barrier.

Desmosomes: are very strong cell to cell junctions on the lateral sides of plasma membranes. They are in tissues that are under mechanical stress, such as the cardiac muscle.

Connexons: is a pore made of six connexin proteins in a gap junction. Connexons are the ones that connect two cells in gap junctions.

Focal adhesions: They connect the extracellular matrix with the cell, regulatory signs and mechanical force is transmitted through them.

Tonofilaments: tonofilaments are the ones that are associated with a plaque in adherens junctions, they are in epithelial tissues.

Adherens junctions: are cell to cell junctions where the cytoplasmatic face is connected to the actin cytoskeleton. They appear as spots forming the plaque or as zonula adherens, which are actin bands around the cell.

Cell junctions are protein complexes that connect two cells that are next to each other or a cell with the extracellular matrix. They have a lot of functions, such as pas information from cell to cell, or the exterior, form a barrier, synchronize cells, etc.

Gap junctions: are connections between the cytoplasm of two cells, molecules and, ions pass directly from one cell to the other.

8 0

3 years ago

Red-flowering snapdragons are homozygous for allele R1. White-flowering snapdragons are homozygous for allele R2. Heterozygous p

lana [24]

Answer:

a) 1/2 red, 1/2 pink; b) all pink; c) 1/4 red, 1/2 pink, 1/4 white; d) 1/2 white, 1/2 pink

Explanation:

The flower color trait in snapdragons shows incomplete dominance: the heterozygous genotype produces an intermediate phenotype between the two different homozygous genoytpes.

The possible genotypes and phenotypes are:

R1R1 : red
R1R2: pink
R2R2: white

The R1R1 individual only produces R1 gametes. The R1R2 parent produces 1/2 R1 gametes and 1/2 R2 gametes.

For that reason, the F1 will be:

1/2 R1R1 (red)
1/2 R1R2 (pink)

The R1R1 individual only produces R1 gametes. The R2R2 parent only produces R2 gametes.

For that reason, the F1 will be :

100% R1R2 (pink)

Both parents are heterozygous. This is a monohybrid cross, and from Mendel's Laws we expect the following offspring:

1/4 R1R1 (red)
2/4 R1R2 (pink)
1/4 R2R2 (white)

The R1R2 parent produces 1/2 R1 gametes and 1/2 R2 gametes. The R2R2 individual only produces R2 gametes.

For that reason, the F1 will be:

1/2 R2R2 (white)
1/2 R1R2 (pink)

8 0

2 years ago

A woman gives birth to a set of fraternal twins: a girl and a boy. She also passes on a color-blindness gene. Which of the child

Eva8 [605]

b. the male is more likely

7 0

3 years ago

Which is an example of a predator adaptation?

Leokris [45]

The answer is D It’s the only one that has anything to do with a predator doing the adapting

5 0

3 years ago

Could there be a frameshift mutation that would not affect the

dusya [7]

Answer:

no, because it would have to be a perfect process, and changing would end in a mistake.

Explanation:

(detail) It would be unlikely, because a frameshift mutation shifts every nucleotide down one, so several amino acids in the protein are likely to be changed. However, if a frameshift mutation occurred near the end of the DNA sequence, the protein could have minimal changes to its structure and function.

7 0

2 years ago