Please help me with this!!

The Lygaeus mode of sex determination is the A. XY/XX scheme that is determined by the scheme.

The common mode of sex determination: XX/XY. Although the X chromosome is bigger than the Y chromosome and incorporates over 1300 genes, there have to be the presence of a Y chromosome so as for the male phenotype to be expressed. X chromatin in its inactivated shape is gift as a mass towards the nuclear membrane in girls is referred to as Barr frame because it became first named via way of means of Barr and Bertem (1949). These Barr our bodies are found in 40% of girls who're taken into consideration as chromatin wonderful and absent in men who're taken into consideration as chromatin negative.

Thus, the correct option is A.

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Answer:

Due to mutation of the HBB gene.

Explanation:

This causes a change in amino acids which are the building blocks of proteins.  Therefore the proteins stick together and form a fiber that changes the shape of the red blood cell making them more fragile.

Evidence that supports my explanation

People with Sickle cell anemia cannot contract malaria since they have low surface area for hemoglobin retention.

Relationship between the structure of the red blood cell and it’s function

It has a biconcave shape with a large surface area to increase space for parking hemoglobin.

How  the shape of the red blood cell affect its function in the case of sickle cell anemia

In the case of sickle cell anemia, the shape of the red blood cell becomes sickle like thus reducing the surface area for packing of hemoglobin.

Answer:

A. Blood is pumped into the aorta and the pulmonary trunk.

B. All of the above.

C. Through the aortic valve.

D. Resistance, stroke volume and heart rate.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Additionally, the right atrioventricular valve (AV) also referred to as the tricuspid valve is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

In conclusion, the following can be deduced;

A. During the ejection period of the cardiac cycle, the mammalian heart pumps blood into the aorta and the pulmonary trunk.

B. Cardiac output can be defined as the volume of blood that is being pumped by the mammalian heart through the left and right ventricle per unit time (minute).

C. The left side of the mammalian heart in all living organism pumps blood through the aortic valve.

D. The variables the cardiovascular system can alter to maintain blood pressure include the following; resistance, stroke volume and heart rate.

Copernicus's Heliocentric Model

Copernicus’s Heliocentric Model, This is known as the Heliocentric model where the Sun is placed at the centre of the universe (hence, the Solar System) and the Earth is, like all the other planets, orbiting it.The measurements were taken using the Michelson Doppler Imager (MDI) onboard NASA’s Solar and Heliospheric Observatory (SOHO). They calculated the radius of the Sun to be 696,342 km (432,687 miles) with a margin of error of only 65 km (40 miles).

Late the locations of the planets and stars: the ancient Greek geocentric model proposed by Ptolemy, Copernicus’ complete heliocentric model, and Brahe’s hybrid of these.

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Answer:

chemical

Explanation:

Answer:

biological

Explanation:

Answer:

Un nucleótido se forma por la unión de una base ___nitrogenada___, un azúcar llamada _____ribosa (en ARN) y desoxirribosa (en ADN)____ y un grupo __fosfato__​.

Explanation:

La información genética utilizada durante la sintesis proteica es almacenada en secuencias cortas de tres nucleotidos llamadas codones de mARN. Cada codon representa uno de los 20 amino ácidos utilizados para construir las proteinas.

Los nucleóticos son subunidades o monómeros compuestos por una molécula de azucar llamada ribosa (ARN) o desoxirribosa ADN), la que se encuentra unida a un grupo fosfato y a una base nitrogenada. La secuencia de nucleóticos en cadena se denomina polímero (compuesto por mas de dos monómeros). Diferentes nucleotidos unidos por sus extremos componen las cadenas de ADN y ARN.

Las bases nitrogenadas que se utilizan para la sintesis de ADN y ARN pueden ser agrupadas en purinas o pirimidinas.

ADN → Formado por bases → Adenina y Guanina → Purinas

                                             → Timina y Citosina → Pirimidinas

Adenina siempre se empareja con Timina, mientras que Guanina se empareja con Citosina.

ARN → Formado por bases → Adenina y Guanina → Purinas

                                             → Uracilo y Citosina → Pirimidinas

Adenina siempre se empareja con Uracilo, mientras que Guanina se empareja con Citosina.

Explanation:

A heterotroph is an organism that eats other plants or animals for energy and nutrients. The term stems from the Greek words hetero for “other” and trophe for “nourishment.” ... Examples include plants, algae, and some types of bacteria. Heterotrophs are known as consumers because they consume producers or other consumers.

Answer:

true

Explanation:

Answer: here you go

Also I like burritos

Answer:

d) the wall

Explanation:

a,b, and c are sources of light and the wall is a object

Natural selection is influenced by environmental factors that limit survival and reproduction, such as hard habitats or mate competition. Selective breeding is referred to as "artificial selection."

Breeding is a natural process of mating between two species, but selective breeding is an artificial process where people intervene and choose specific organisms to mate.

There are three differences between natural selection and selective breeding:

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The two molecules could differ which would explain the difference in their ability to pass through the artificial plant cell membrane because molecule A is smaller than molecule B.

There аre multiple fаcts thаt cаn justify thаt two molecules show the difference in their аbility to pаss through а membrаne:

Different molecules hаve different solubility depending upon the type of molecule аnd membrаne. So, the two molecules could differ which would explain the difference in their ability to pass through the artificial plant cell membrane because of the size of the molecules.

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Answer:

I think its B

Explanation:

I DK if I'm right bc I'm stuck on the same question

just get one wrong and if you get everything else right, it won't matter at all.

Scientists may be able to predict which species will become extinct by studying fossils. Fossils can be utilized to reconstruct pedigrees and identify family traits.

Scientists can use fossils to determine the time scale over which traits evolved. Scientists can utilize fossils to learn about the traits of ancient animals. Paleontologists compare the properties of species from different historical eras.

They use this information to try to understand how creatures evolved over millions of years Paleontologists classify fossils using physical characteristics that correspond to the Linnaeus system, and the organism then names the genus and species in Latin. A paleontologist collects as many fossils as possible from a rock or silt.

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Answer:

glucose (energy) from the sun they store some of it as a starch. I hope this helps you!

Explanation:

Answer: C) Does the cell have membrane-bound organelles?

Explanation: eukaryotes have a membrane bound nucleus while prokaryotes don’t.

hopefully it correct! it made more sense to me than the other ones :)

Fungi can be incredibly sophisticated multicellular organisms or single-celled critters.

They can be found in almost any location, but the majority of them prefer to dwell on land, primarily in soil or on plant matter, as opposed to the sea or fresh water.

The decomposers are a group that thrives in the soil or on dead plant matter and is crucial to the cycling of carbon and other elements. Some are parasites of plants that spread illnesses like canker, rust, scabs, and mildew.

Fungal diseases in crops can cause the farmer to lose a lot of money. A very small percentage of fungi can make animals sick. These include skin conditions that affect humans including athletes foot, ringworm, and thrush.

Therefore, Fungi can be incredibly sophisticated multicellular organisms or single-celled critters.

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The complete question is :

1.has positive and negative mating strands, 2. has erect fruiting body and 3.the first fungi to evolve, 4.lives in a varied habitat and exhibits all forms of nutrition. A. chytrid---------------------- and B. common mold-----------, C. sac fungi-------------------, D. club fungi------------------

Answer:

A

Explanation:

Answer: the first one.

Explanation:

It's generally long lived and harmful to living things.

Hope I helped

An example of how poaching affects biodiversity is selling baby gorillas at high prices.

Poaching is the illegal trade and killing of wild animals. Some of the animals and plants are sold as trophies and "folk medicines", others as pets and houseplants. The level of poaching cannot be overstated, as there are more tigers in captivity than in the wild. Killing wildlife is bad for biodiversity. Illegal hunting and trafficking of animals.

Poaching was once done by poor farmers to make a living and supplement their meager diet. He opposed the hunting privileges of nobles and monarchs.

Poaching, hunting, illegal shooting, trapping or taking of fish or plants from private property or any place where such practices are expressly reserved or prohibited by law. Poaching is a major existential threat to many wildlife species worldwide and a major cause of biodiversity loss.

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Complete question :

Although it is against the law, people hunt and capture mountain gorillas in Africa. They sell the baby gorillas for large sums of money. This is an example of which factor that affects biodiversity?

A. Pollution

B. Nonnative Species

C. Habitat Destruction

D. Poaching

Answer:They can take less baths or do the dishes by hand easy ways to reduce water usage

Explanation:

Answer:

hooking wire to one terminal battery

The phenotypic ratio of purple-flowered to white-flowered offspring will be 3:1. Hence 75% offsprings will be purple.

Genetics is the study of the genes, the genetic variation, and the heredity in the organisms. It is an important topic in biology because heredity is fundamental to organism evolution. In the nineteenth century, Gregor Mendel, a Moravian Augustinian monk working in Brno, was the first to do scientific study on genetics.

The study of genetics focuses on the effects of individual genes or groups of genes in health and disease. Understanding genetic variations and anomalies is critical for learning more about health promotion and disease prevention. In genetics, the phenotype is the set of observable traits or attributes of an organism. The term refers to the anatomy, developmental processes, biochemical and physiological characteristics, behaviour, and behavioural results of an organism.

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Answer:

True

Explanation:

I finish e2020! good Lucky

Answer:

fats and oils.

Explanation:

You may wonder how the heck a large animal like a cow gets any energy from grass. The answer lies in these microbes. As they digest the cellulose by way of fermentation, their metabolic pathways produce chemicals called volatile fatty acids (VFAs) or fat sources (oilseeds, animal, and vegetable oils).

Hope this Helps!!!

Answer:

Carbohydrates

Explanation:

I took the test and this was the right answer

Answer: A. Homologous structures occur in each fossil

Explanation: source: trust me broski

(Actually though trust me)

Answer:

No help is received in 30 minutes. A person with A type of Blood safely received type O Blood No.

Explanation:

O blood group people in the world is only few left 100 people in blood group O

In a diploid organism, two alleles for a particular gene are expressed and interact to produce physical traits. A species' observable characteristics are referred to as its phenotype.

The genotype is the genetic composition of an organism, which includes both the alleles that are physically expressed and those that are not. Mendel's hybridization studies show how phenotype and genotype differ from one another. For instance, the diploid genotypes of the plants in the P, F1, and F2 generations are related to the phenotypes that Mendel observed in his crosses between pea plants with different features. We shall utilize seed color as an example, which was Mendel's second feature of study. Two alleles of a single gene control the color of seeds.

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