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inysia [295]
3 years ago
13

Researchers have discovered exactly how the Yersinia pestis bacteria that causes bubonic plague spreads through the body.p

Biology
1 answer:
masya89 [10]3 years ago
5 0

Answer: yersinia pestis spreads from a bubo or from the lungs into the bloodstream. It can also happen if the Y. pestis bacteria get into the bloodstream after a person has direct contact with the meat or blood of an infected animal.

Explanation:

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What are the three parts that make an amino acid?
Lesechka [4]
An amino acid is an organic molecule that is made up of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid.
6 0
3 years ago
Insect hormones and their receptors ________. A. act independently of each other B. are a focus in pest control research C. util
Leokris [45]

Insect hormones and their receptors are a focus in pest control and research. Hence, Option B is correct.

Some of the insect hormones such as ecdysone (molting hormone), JH (juvenile hormone) and their analogs can be used for biological  control of pests.

Option A: Hormone receptors are proteins that bind hormones and form hormone receptor complex to maintain cellular activities.

So Option A is incorrect.

Option B: Some of the peptide hormones used in pest control and research. So Option B is correct.

Option C: Peptide hormones interact with only cell surface whereas aminoacid derivatives and thyroid hormones directly interact with nucleus. so Option C is incorrect.

option D is incorrect.

Learn more on hormone receptor complex here:

brainly.com/question/15241630?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ4

3 0
1 year ago
which of the following levels of protein organization shows the complete 3D arrangement of the polypeptide chain
kherson [118]

Proteins are the macromolecules made of hundreds of amino acids. Proteins are most varied class of biological molecules and show the greatest variety of structures. Many have detailed three-dimensional folding patterns that result in a compact form, but others do not fold up at all and they are in random conformations. The function of proteins depends on their structure.

The secondary structure of protein fold together to form the 3D arrangement of a polypeptide chain that results into Tertiary structure which is a functional protein.    


4 0
3 years ago
Give two reasons why cells divide. Please help.
Dmitrij [34]
For growth, repair and differentiation
5 0
2 years ago
Read 2 more answers
Please tell me the answer ​
kaheart [24]

Answer:

1)the process being studied in the picture is transpiration I guess

3)the pot is covered with plastic sheet to trap the water (vapour) which is being evaporated

7 0
3 years ago
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