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3 years ago

HAPPY NEW YEARS !!! CAN SOMEONE PLEASEEEE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST !!!

Biology

1 answer:

sp2606 [1]3 years ago

6 0

Answer:

According to the image shown, the country that most closely resembles the population pyramid by age is the United States (option A).

Explanation:

The population pyramid consists of a bar chart that groups the population by age and sex. Each sex is separated into two columns, while from the base to the top the ages are grouped from lowest to highest.

The pyramid by age shown in the image corresponds to a developed country, such as the United States, since the distribution of the population of infants and young people is proportional, being more acute in the advanced ages, acquiring the shape of a bottle.

The "bottle" shape of the population pyramid indicates a controlled birth rate, as well as good availability of basic and sanitary resources, characteristic of a developed country like the United States.

The other options are not correct because:

C and D. In developing countries such as Nigeria and Ethiopia, the birth rate is high - forming a broad base - and the resources available are limited, so there is a progressive decrease as the age groups are distributed, giving a true pyramid shape.

B. Italy, a European country, has a tendency to rhomboidal population pyramids. This is due to a predominance of adult, young and mature, population, low birth rate, good basic and sanitary resources.

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Globular proteins fold up into compact, spherical structures that have uneven surfaces. They tend to form multisubunit complexes

AURORKA [14]

Answer:

Elastase.

Explanation:

Collagen, keratin, and elastin are fibrilar proteins.

Elastin is a globular protein, actually an enzyme, that breaks down proteins, such as elastin. It is a protease. In humans, there are eight different genes for the production of elastase. Elastase also has an important immunological role .

3 0

3 years ago

You have a dish of mammalian cells in culture that are all about to enter mitosis (it is a synchronously replicating culture of

mihalych1998 [28]

Answer:

Option-A

Explanation:

RhoA is a protein which belongs to the Rho GTPase family proteins and related Ras superfamily. The Rho A protein is involved in the cell division before the cytokinesis as they are involved in the formation of cytokinesis structures like the actin-myosin rings and the contractile ring formation.

In the given question, if the drug inhibits the activity of RhoA, therefore, cytokinesis will be affected and the cell will complete all the stages of Mitosis except cytokinesis. The cells will be mostly observed in the telophase as cytokinesis will take place after that.

Thus, Option-A is correct.

6 0

4 years ago

Tetraploidy may result from:____.

siniylev [52]

Tetraploidy may result from

(c)lack of cytokinesis in mitosis and

(d) nondisjunction in mitosis in the early embryo.

<h3>What exactly are tetraploidy and triploidy? Tetraploids are they fertile?</h3>

Triploidy happens quite frequently, whereas tetraploidy is an uncommon chromosomal anomaly. In the first trimester, the majority of triploid embryos miscarry. The conceptus has a triploid karyotype in about 20% of first-trimester spontaneous abortions, according to the research. Chromosome duplication in a somatic cell of an early cleavage-stage embryo, a postzygotic event, is the most likely cause of tetraploidy. A rare diploid ovum may be fertilised by a similarly rare unreduced sperm.

Although the tetraploid form on the left is self-fertile, crosses with the parent diploid form result in sterility. It might then be broadly regarded as a new species, or at the very least the building blocks for the eventual emergence of a new species.

To learn more about Tetraploids, visit:

brainly.com/question/14978163

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4 0

2 years ago

Look at this definition: the inability to start a pregnancy after having unprotected vaginal intercourse for more than a year or

weeeeeb [17]

B. infertility is the correct answer

3 0

3 years ago

Read 2 more answers

Please select the word from the list that best fits the definition