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3 years ago

Answer some of this questions about Hellen Keller start chap 3 please help me

Biology

1 answer:

Allushta [10]3 years ago

6 0

Chapter 3:
1. Her aunt created a doll out of towels and sowed eyes on the doll.
2. Dr.Alexander Graham Bell was a Scottish born scientist, inventor, engineer, and innovator who was credited with patenting the first practical telephone.

Chapter 4:
1. Because she is blind and deaf.
3. She lacks remorse/sympathy because she is blind and deaf and does not sense the environment.
4. When Miss.Sullivan arrived, Helen was taught to communicate through finger play. She was often frustrated and angry when she could not communicate.

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I’m kinda stuck on this question

Marrrta [24]

Answer:

Explanation:

smallest to largest is, monosaccharide, disaccharide, polysaccharide, took the test

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3 years ago

Earthquakes release seismic waves, which are waves of .... *

ratelena [41]

Answer:

<em><u>It would be soil, energy,and motion</u></em>

Explanation:

Because when there is an earthquake the tectonic plates are pushing upward. so that will cause the soil to come up then the energy beneath to make it move it there's also the motion as it shakes.

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3 years ago

A biologist working in a lab adds a compound to a solution that contains an enzyme and substrate. This particular compound binds

tigry1 [53]

Answer:

The correct answer is C) The compound is an allosteric inhibitor.

Explanation:

An inhibitor works in many ways, but this particular one binds to the allosteric site in the enzyme causing a decrease of the enzymatic activity. When this situation happens, the inhibitor doesn't bind to the active site, but it changes the enzyme's shape so it cannot work properly anymore.

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3 years ago

Do you think it would be possible to construct a pyramid where the number of carnivores was more than the number of herbivores?

kondaur [170]

Answer:

Explanation:

Pyramid is the use of graph to represents the flow of energy in each trophic level. There are five trophic level and each has its own energy level pyramid help to show the energy at each level.

Each energy level must have at least One tenth of the energy level of the organisms before itself, this indicates that the energy in the lower tropic level is higher than the trophic level above.

Hence, carnivores cannot be more than herbivores in a biomass they need enough of herbivores to survive in the biomass as the energy level moves from the herbivores to the carnivores.

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3 years ago

Describe the key chromosome behaviors during mitosis.

SIZIF [17.4K]

Answer:

Explanation:

During mitosis, the chromosomes are distributed equally in the resulting chromosome. The chromosome number was doubled in the S phase of the interphase and the cell is ready for mitosis. The chromosomes are more condensed and twisted in prophase. It is also double in length. During the metaphase, the chromosomes are arranged in the metaphase plate. The microtubules from the centriole attach to the centromere of each chromosome and pull them towards the pole.

Thus each chromatid pulls apart and migrates towards the poles. The nuclear membrane and nucleus disappear during mitosis. At the end of telophase, the daughter cells contain an equal number of chromatids as in the parent cell.

Sometimes the microtubules of centrioles do not function properly and fail to pull the chromosomes equally to the cells. Thus one of the daughter cells contains more chromosomes and another fewer chromosomes. This occurs in anaphase. This results in the non-disjunction of chromosomes.

Sometimes centromere splits transversely instead of longitudinal division. This results in the formation of 2 daughter chromosomes of unequal length. This is called the isochromosomes.

The number of chromosomes distributed in the daughter cells results in a normal cell or any genetic disorder. The main function of mitosis to produce daughter cells having an equal number of chromosomes present in the parent cell.

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3 years ago