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mote1985 [20]
3 years ago
8

What did the comparative study on chytridiomycosis teach scientists studying white-nose syndrome in bats?Select one:a. Humans we

re responsible for the spread of chytridiomycosis, but not white-nose syndrome.b. A novel fungal infection could spread to colonies and cause dramatic population crashes, as seen in the comparative study.c. Chytridiomycosis affected only certain amphibians, so the comparative study could not teach the scientists anything useful.d. White-nose syndrome affects bats but does not cause death in organisms like chytridiomycosis does in amphibians.e. It was probably not a fungal infection affecting the bats and scientists needed to look elsewhere for a cause.
Biology
1 answer:
Dvinal [7]3 years ago
7 0

Answer:. A novel fungal infection could spread to colonies and cause dramatic population crashes, as seen in the comparative study

Explanation:

fungal diseases of wildlife, amphibian chytridiomycosis and bat white-nose syndrome are diseases in bat that have emerged rapidly and unexpectedly over the past several decades.

These diseases have lead to unprecedented local and global decrease in population of amphibian and bat species the infection colonize their territory and pose serious threats to biodiversity and ecosystem stability due to loss of many of them.

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What is Biological method?​
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Methods or procedures that are used to study living things.
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2 years ago
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If each parent has two sets of genes and chromosomes, why do their offspring receive only one set from each parent?
bulgar [2K]

Answer:

Explanation:

porque una persona con dos alelos normales presentará un fenotipo normal, mientras que si las dos copias del gen son el alelo mutado que producen una enfermedad, el fenotipo expresará los síntomas característicos de esa enfermedad.

8 0
3 years ago
A bacterial infection of the periodontium that causes rapid attatchment loss and poor response to periodontal therapy has a grad
Art [367]

A bacterial infection of the periodontium that causes rapid attatchment loss and poor response to periodontal therapy has a grade of Aggressive periodontal disease

<h3>Periodontium </h3>

The cementum, gingiva, periodontal ligament (PDL), and alveolar bone make up the complex structure known as the periodontium. The periodontium's main purposes are to protect the underlying structures of the tooth from the oral microflora and to enable the tooth to connect to the bone.

An orthokeratinized or parakeratinized stratified squamous epithelium makes up the gingival epithelium. The gingiva, which has connective tissue and epithelial components, covers the supracrestal root surface and the alveolar bone. As it lines the gingival sulcus close to the tooth surface (enamel or cementum) and subsequently joins to it with hemidesmosomes, the gingival (oral) epithelium develops into the sulcular epithelium and junctional epithelium.

Learn more about periodontium here:

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7 0
2 years ago
Is blood clotting an example of a positive or negative feedback mechanism? Explain your answer based on the description of the m
serg [7]

Answer:

Blood clothing is an example of positive feedback.

This type of feedback mechanism is useful to the body because it multiplies the factor that intervenes in clotting accelerating the process.

If a toxin affects the molecules that signal for platelets the feedback will not be effective enough to produce clotting and the body will keep bleeding.

Explanation:

Blood clotting is an example of positive feedback due to the fact that when the vascular endothelium is damaged  platelets will go to this area and activate themselves once they are in contact with the collagen fibers of the damaged structure. When the platelets are activated they will release the contents that is stored in their granules. One of the contents is a Gq-linked protein receptor cascade,  that will increase the concentration of calcium in the platelets. Calcium activates protein kinase C, which, in turn, activates phospholipase A2 (PLA2). PLA2  will modifies  an  integrin membrane  increasing its affinity to bind fibrinogen. The activated platelets change their  shape , and the fibrinogen cross-links with the integrin membrane aiding  in  the aggregation of adjacent platelets. After this the coagulation cascade takes place. there are two pathways the extrinsic  and the extrinsic one.

The extrinsic pathway will be activated due to tissular factor released  by the platelets and the intrinsic pathway will be activated due to endothelial collagen. The final product of both pathways is factor x.

Factor x will transform prothrombin into thrombin will activate the conversion of fibrinogen into fibrin. Thrombin will form a net of fibrin that will the clot.

A cascade reaction is useful because every component of the cascade are related making a quick reaction once that one of then is activated and can activate other or more factors.

If a toxin affects the molecules that signals for platelets, platelets will not go to the damaged area and in consequence there will not be thrombin and fibrin to form the clot together with platelets.

7 0
3 years ago
In fruit flies, gray bodies (G) are dominant over black bodies (g), and red eyes (R) are dominant over orange eyes (r). Each ind
Sindrei [870]

Answer:

The predicted genotype of the offspring is GgRr.

Explanation:

The gray body is dominant over black body. The genotype of gray body is GG and the genotype of black body is gg. Red eyes are dominant over orange eyes. The genotype for red eye is RR whereas the genotype of orange eye is rr.

GGRR is crossed with ggrr, the offspring produced by this cross is GgRr with gray body and red eyes.

GGRR  ×   ggrr

 GgRr.

4 0
3 years ago
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