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3 years ago

What thing in our body decides the entry of foreign particle

1 answer:

6 0

The nose, mouth, ears and eyes decide the entry of foreign particles. Little children mostly acquire it because mostly children put their hands or stick their tongues on nearby objects which are mostly infested with bacterias and pathogens, sometimes these particles are harmful and sometimes they aren't.

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Which statement about vacuoles is true

Alinara [238K]

Answer:

vacuoles are larger in plant cells than in animal cells

Explanation:

3 0

3 years ago

A 450 kg horse starts a running. If the horse is accelerating at 1.2 m/s2,

hodyreva [135]

Answer:

Force of 540 Kgm/s^2 is closest to the net force acting on the vehicle.

Explanation:

Force is the change in momentum per unit time

This relationship is equivalent to product of mass and acceleration

Thus F = Mass * acceleration

Substituting the given values in above equation we get -

F = 450 Kg * 1.2 m/s^2

F = 540 Kgm/s^2

6 0

3 years ago

In addition to heating, cooling, cooking, providing transportation, and fueling engines, what is another major use for our natur

Alisiya [41]

Answer:Helping the plants grow.

Cleaning.

Building.

Explanation:

4 0

4 years ago

Read 2 more answers

If the supply of carbon dioxide stops in plant, what will happen to the process of

V125BC [204]

Answer:

All plants and animals on earth engage in a process called respiration. Respiration combines oxygen and the food created during photosynthesis to produce usable energy. One of the byproducts of respiration is CO2, this is the opposite of photosynthesis. It is not unusual for plants to stop taking in carbon dioxide to uptake small amounts of oxygen at night.

In the event that plants cease to take up CO2 all together, they will cease to convert sunlight into carbohydrates, and die. The death of autotrophs would lead to a chain reaction of the death of all higher order organisms. Mankind could survive on food stuffs on hand, but only for a very short time. It has been said that any western society, its members are just 3 meals away from revolution.

Social order would be completely lost during the initial food riots. Once the processed and packaged food supply is exhausted, it would be the law of the dying jungle. The strong and well armed would take from the weak and ill prepared. Livestock and game would be slaughtered as the next to the last food source disappeared. The shear volume of death would foul the water spreading pestilence and disease. In one or two years bands of humans would prey on other humans as they degenerate into cannibalism. There could be a few humans in protected bunkers and hideaways, but they too would eventually succumb to starvation or despair as the world died.

The fact that plants stopped converting CO2 into O2 would be of little consequence. Man would die of hunger 1000 years before oxygen was ever an issue.

3 0

2 years ago

A true-breeding plant with inflated pods and yellow pods is crossed with a plant that has constricted and yellow pods. Draw a

xenn [34]

Answer: Sysy × Sysy i.e. all are genotypically heterozygous, inflated, and yellow

Explanation:

Punnett squares are a diagrammatic means of determining traits of hybrid offspring produced via crosses in genetic breeding. The parental genotypes and phenotypes are usually known, and these typically follow standard Mendelian ratios and inheritance.

Mendelian genetics focus on trait inheritance, or heritability. These traits are packaged out into its own gamete, inherited by themselves and often show dominance, where one's effect may mask those of another trait.

These are called the Law of Segregation, Independent assortment and Dominance respectively.

For this cross...

Parent generation or P generation:

gametes: Y → pod color green dominant (Y), yellow recessive (y)

S→ pod size; inflated dominant (S), constricted recessive (c)

Assumptions...

True breeding plants are homozygous, with identical sets of alleles
The other parent is heterozygous, as it was not said to breed true

P generation: SySy × sysy

yellow, inflated × yellow, constricted

F1 generation: Sysy × Sysy ...(from punnet square)

phenotype: yellow, inflated × yellow, inflated

∴ all are genotypically heterozygous, inflated, and yellow

7 0

3 years ago