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SSSSS [86.1K]
3 years ago
7

4. Which of the three major types of membrane receptors is often used by bacteria to cause infections?

Biology
1 answer:
vodka [1.7K]3 years ago
4 0

Answer:

on channel-linked receptors, G-protein-linked receptors, and enzyme-linked receptors.

The ability of cells to communicate through chemical signals originated in single cells and was essential for the evolution of multicellular organisms. In multicellular organisms, cells send and receive chemical messages constantly to coordinate the actions of distant organs, tissues, and cells. Cells can receive a message, transfer the information across the plasma membrane, and then produce changes within the cell in response to the message. Single-celled organisms, like yeast and bacteria, communicate with each other to aid in mating and coordination. Cellular communication has developed as a means to communicate with the environment, produce biological changes, and, if necessary, ensure survival.

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4. Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. If t
lisov135 [29]

Answer:

The correct answer would be:

  • Genotype ratio: 1 (PP) : 2 (Pp) : 1 (pp)
  • Phenotypic ratio: 3 (polka-dot tails) : solid colored tail

The genotype of both parents is Pp (heterozygous).

Thus, both the parent would produce two types of gametes which are P and p.

The cross would result in the production of offspring with three types of genotype PP, Pp, and pp in 1:2:1.

Offspring with PP and Pp will have a polka-dotted tail as it is the dominant trait.

Thus, the phenotype ratio would be 3 (polka-dotted tail) : 1 (solid colored tail).

3 0
3 years ago
In eukaryotes , DNA is found in the cytoplasm of the cell
Paladinen [302]
In eukariotes, cells that have a neculeus, the dna is found in the neculeus, not the cytoplasim so that is false... I dunno if that is what u were asking...
5 0
3 years ago
Why is it important to prevent thermometer from resting no the bottom of the test tube?
Mariana [72]

Answer:

It's important to not touch the sides or the bottom of the test tube with the thermometer because touching it to the sides or bottom of the test tube fractures the glass and does not allow for correct temperature measurements.

8 0
3 years ago
Meaning of transparent<br>​
Charra [1.4K]

fine or sheer enough to be seen through

5 0
3 years ago
Read 2 more answers
Laika Bargain is shopping with her 3 year old son Nota. Nota is running around the store pulling cans of the shelf and endangeri
Rasek [7]

Answer:

The most likely cause of Nota’s pain is shoulder dislocation/ subluxation.

Explanation:

When Laika picked Nota up by the right arm and lifts him, the shoulder was in abduction and external rotation, which favours shoulder dislocation. This was supported by the loud popping sound, guarding of right arm and pain, which is severe in nature.

6 0
3 years ago
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