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4 years ago

1. Explain how a bacteriostatic antibiotic is useful even if it does not result in the death of the pathogen.

Biology

1 answer:

AlexFokin [52]4 years ago

8 0

Answer:

1- the bacteriostatic effect refers to the fact that they stop the metabolism of pathogenic bacteria, which means that they do not reproduce, do not colonize and do not generate the disease.

Bacteria in order to trigger a pathogenic response need to comply with their metabolism and this does not happen in the bacteriostatic effect.

2- Broad spectrum antibiotics where the patient's life is at risk, difficulty swallowing or breathing, and in infections that involve many planes or we are facing an extremely complex buofilm.

Low-spectrum antibiotic, in mild, focal infectious diseases that do not compromise the systemic factor and are suspected of simple or little complex pathogens.

3-Through mechanisms and virulence factors that are transmitted between them. One mechanism is sporulation, the change of essential metabolite, among others.

4- Prevents the spread and resistance because it reduces the bacterial load of pathogenic bacteria that in the future could form bacteruphages.

Explanation:

Broad spectrum antibiotics cover many bacteria, that is, they kill many bacteria of different families and even characteristics, while low spectrum antibiotics are the opposite.

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A few months ago, there was a wildfire in a forest. Only a few plants and animals survived the fire. Currently, many trees that

Fittoniya [83]

Secondary succession

Explanation:

The type of succession in this forest is a secondary succession.

A secondary succession is from of succession that occurs in a place that lost it already established ecosystem.

It is succession in an area with soil already formed.

Primary succession is succession in a completely destroyed area that has lost its ecosystem components.

This kind of succession occurs in an area that a wildfire ravages.
The first set of plant to populate the area are usually short lived grasses.
Then shrubs and more vegetation grows.
With time, perennial forest trees surfaces and the forest is restored.
Secondary succession is faster

learn more:

Primary and secondary succession brainly.com/question/1603854

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3 0

3 years ago

Sort the following events into two categories:________.

Amanda [17]

Answers:

a) carcinogenic

b) anti-carcinogenic

c) carcinogenic

d) carcinogenic

e) carcinogenic

f) anti-carcinogenic

g) anti-carcinogenic

h) anti-carcinogenic

Explanation:

Cyclins are proteins that regulate the progression through the cell cycle, i.e., the transition of G1 to S phase. It is well known that high cyclin expression may lead to cell proliferation states, which is closely associated with cancer progression. Moreover, the blockage of cyclins may have an anti-carcinogenic effect by inhibiting the progression through the cell cycle. MAP kinases are serine/threonine kinases that regulate the progression through the cell cycle by phosphorylating a variety of substrates during cell proliferation. In consequence, phosphatases that inactivate MAPK kinases (i.e., by dephosphorylation) may have an anticarcinogenic effect. The p53 is a tumor suppressor protein involved in diverse cellular processes including DNA repair, cycle arrest and programmed cell death. This protein (p53) is activated by phosphorylation at target residues and phosphatases inactivate it, thereby the blockage of its degradation may have an anticarcinogenic effect. Oncogene activation (i.e., the expression of oncogenes), may alter diverse cellular processes including DNA replication, and thereby may lead to cancer development. The G-protein α subunit is a GTPase that hydrolyses GTP and thus has a major role in controlling the kinetics of the G-protein signaling cascade. Platelet-derived growth factor receptors (PDGFR) are kinase receptors that play roles in regulating cellular differentiation, cell proliferation and cell growth. PDGFR receptors are present on the surface of normal cells, however, it has been shown that mutations of the PDGFR genes that lead to their high expression lead to uncontrolled cell growth and consequently cause cancer (i.e., by increasing PDGF signaling).

5 0

3 years ago

How are Ionic bonds formed?

irinina [24]

Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charge

6 0

3 years ago

Read 2 more answers

Which of the following statements regarding absorption of monosaccharides is TRUE?

Otrada [13]

Answer:

A. Not all monosaccharides are absorbed by active transport is the correct answer.

Explanation:

Monosaccharides are simple sugar.
Glucose, galactose, and fructose are examples of monosaccharides.

They are the building blocks of disaccharides and polysaccharides.

Monosaccharides function is to produce energy.
Not all monosaccharides are absorbed by active transport because monosaccharides(galactose, glucose) are transported in the epithelial cells through protein carrier by secondary active transport and Fructose passes and absorbed entirely by facilitated diffusion.

6 0

4 years ago

Which cells of mammary glands secrete milk?

Lunna [17]

The basic components of a mature mammary gland are thealveoli (hollow cavities, a few millimeters large) lined with milk-secreting cuboidal cells and surrounded by myoepithelial cells. These alveoli join to form groups known as lobules. Eachlobule has a lactiferous duct that drains into openings in thenipple.

Hope it helps u

3 0

3 years ago