plz answer this true or false??

Answer:

Estrogen

Explanation:

Estrogens are a group of hormones that play an important role in the normal sexual and reproductive development in women.

Estrogen is responsible for the development of these characteristics in the female. Therefore, option (A) is correct.

Estrogen, also known as oestrogen, is a class of sex hormone that is responsible for the growth and regulation of the female reproductive system as well as secondary sex characteristics. Estrone, estradiol, and estriol are the three primary endogenous estrogens that are responsible for the majority of the hormone activity associated with estrogen.

The growth, development, and physiological functioning of the human reproductive system are all controlled by estrogen. In addition to affecting the neuroendocrine and skeletal systems, this hormone also affects the adipose and cardiovascular systems. Estrogen is a vital component of the male and female reproductive systems and is primarily manufactured by the ovaries in females and the testes in males.

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Answer:

A es la respuesta

Explanation: Espero que esto haya ayudado :)

Answer:

loops

Explanation:

.......................

Answer:

there should be some options...right?

Answer:

Liquid volume is usually measured using either a graduated cylinder or a buret. As the name implies, a graduated cylinder is a cylindrical glass or plastic tube sealed at one end, with a calibrated scale etched (or marked) on the outside wall.

Beakers and Flasks.

Graduated Cylinders.

Burets.  

Pipets.

Explanation:

Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.

Answer:

Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.

Answer:

In some nuclear reactors, water is used as a coolant. If this cooling mechanism fails, the temperature in the reactor core can rise dangerously high. The most dramatic such 'meltdown' was the Chernobyl disaster of 1986.

El tipo de estrofas que componen este poema son cuartetos y tercetos.

En los poemas, una estrofa representa una seria de líneas que forman una unidad. Está unidad se puede reconocer porque:

Además, las estrofas se clasifican de acuerdo a su número de líneas o versos. Esta clasificación incluye:

De acuerdo a lo anterior, el poema anterior tiene dos cuartetos y un terceto.

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Answer:

c. water and solutes are transported from the tubular fluid, across the tubular epithelium, and into the peritubular fluid.

Explanation:

Answer:

2 weeks to a month

Explanation:

when new skin cells are made, they move from the bottom of the epidermis to the top of the epidermis. This takes about 2 weeks to a month. As the new cells move up, old cells near the top die and rise to the surface of the skin.

The dead cells are what we see on our skin every day.

Answer:

C

Explanation:

Answer:

Explanation: Electrophoresis displays the entire DNA sequence, whereas fingerprinting allows you to quickly identify someone. But they have one thing in common: they are both so distinctive that it is nearly impossible for two persons to have the same fingerprint/DNA sequence.

4th- being more adaptive to the surroundings

Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own. Therefore, the correct option is (C).

Therefore, the correct option is (C).

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Question:

Which of the following statements best compares reproduction in viruses with reproduction in single-celled protists?

A. Viruses reproduce by releasing spores; single-celled protists reproduce by dividing in half.

B. Viruses require large colonies to reproduce; single- celled protists reproduce as individual cells.

C. Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own.

D. Viruses form haploid gametes when they reproduce; single-celled protists form diploid gametes when they reproduce

Answer:

A

Explanation:

Answer:

yes that's true

Explanation:

pls mark brainliest

Answer:

False, it can also be caused by mutations.

Answer:

there are 2 offspring parent have

The statement 'more new species have evolved in coral reef habitats than in most other types of habitats.' is accurate. A coral reef is a hotspot of biodiversity.

A coral reef is a marine ecosystem composed of organisms (i.e., corals) that form a wall together (i.e., reef-building corals).

These reefs consist of many colonies of coral polyps, which held together by a calcareous material (i.e., calcium carbonate)

A coral reef is a hotspot of biodiversity because there are many different species that live and evolved in this type of habitat.

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Answer:

'more new species have evolved in coral reef habitats than in most other types of habitats.'

Explanation:

trust

Gun

Explanation:

it has caused many to die, yes the government brought that to help with security but it has gotten into Tue hands of those that have no value for human life. Take the case of the Boko harm in surgery in Nigeria, all of them are armed with Ak47's and they use it to kill innocent Nigerians not only that there are series of cases of accidental shootings AND that's how a life is lost. You can't really argue with me considering the fat that life is priceless. thank me later

Answer:False

Explanation: right on Edge

The statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true, as urban anomie theory suggests that the impersonal nature of city life leads to the breakdown of social bonds.

According to this theory, the fast pace of urban life, the diversity of populations, and the emphasis on individual achievement can lead to a weakening of social ties and a breakdown of social norms and values. As a result, individuals may feel disconnected from others and from society as a whole, leading to a sense of alienation and a lack of meaning in their lives. This sense of normlessness and detachment can extend beyond situations that require social involvement, such as interactions with neighbors or participation in community events, to other aspects of daily life.

Hence, the statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true.

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Answer:

En conjugación, el ADN se transfiere de una bacteria a otra. Después de que la célula donante se acerca al receptor mediante una estructura llamada pilus, el ADN se transfiere entre las células. En la mayoría de los casos, este ADN está en forma de plásmido. Explanation:

Answer:

sister chromatids

Explanation:

Suppose that a cell is unable to replicate its DNA, the structure that will not be present in the cell is sister chromatid.

Sister chromatid refers to replicated chromosome that are genetically identical.

Prior to every cell division, a cell must replicate its DNA in order to have an even distribution of genetic material in the daughter cells.

The result of DNA replication is sister chromatids, which carry individual identical DNA.

Therefore, if a cell is unable to replicate its DNA, the structure that will not be present in the cell is sister chromatid.

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Answer:

Explanation:

There are a few types of atoms that can be a part of a plant one day, an animal the next day, and then travel downstream as a part of a river’s water the following day. These atoms can be a part of both living things like plants and animals, as well as non-living things like water, air, and even rocks. The same atoms are recycled over and over in different parts of the Earth. This type of cycle of atoms between living and non-living things is known as a biogeochemical cycle.

All of the atoms that are building blocks of living things are a part of biogeochemical cycles. The most common of these are the carbon and nitrogen cycles.

Tiny atoms of carbon and nitrogen are able to move around the planet through these cycles. For example, an atom of carbon is absorbed from the air into the ocean water where it is used by little floating plankton doing photosynthesis to get the nutrition they need. There is the possibility that this little carbon atom becomes part of the plankton’s skeleton, or a part of the skeleton of the larger animal that eats it, and then part of a sedimentary rock when the living things die and only bones are left behind. Carbon that is a part of rocks and fossil fuels like oil, coal, and natural gas may be held away from the rest of the carbon cycle for a long time. These long-term storage places are called “sinks”. When fossil fuels are burned, carbon that had been underground is sent into the air as carbon dioxide, a greenhouse gas.

Recently, people have been causing these biogeochemical cycles to change. When we cut down forests, make more factories, and drive more cars that burn fossil fuels, the way that carbon and nitrogen move around the Earth changes. These changes add more greenhouse gases in our atmosphere and this causes climate change.

Carbon cycleThe Carbon Cycle

The element carbon is a part of seawater, the atmosphere, rocks such as limestone and coal, soils, as well as all living things. On our dynamic planet, carbon is able to move from one of these realms to another as a part of the carbon cycle.

Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.

Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.

Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.

Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration.

Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels. Of this massive amount, 3.3 billion tons stays in the atmosphere. Most of the remainder becomes dissolved in seawater.

Carbon moves from the atmosphere to the oceans. The oceans, and other bodies of water, absorb some carbon from the atmosphere. The carbon is dissolved into the water.

Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But since the start of the Industrial Revolution about 150 years ago humans have burned so much fuel and released so much carbon dioxide into the air that global climate has risen over one degree Fahrenheit. The atmosphere has not held this much carbon for at least 420,000 years according to data from ice cores. The recent increase in amounts of greenhouse gases such as carbon dioxide is having a significant impact on the warming of our planet.

Answer:

Third-level consumers are any organisms big enough to obtain energy by feeding off lower-level consumers. These are also called tertiary consumers. For example, in a forest ecosystem, snakes eat toads. Heron and large fish, such as bass and walleye, consume smaller fish, frogs and crayfish.

Explanation:

Answer:

The larger fishes like tuna, barracuda, jellyfish, dolphins, seals, sea lions, turtles, sharks, and whales are tertiary consumers  Explanation: They feed on the primary producers like phytoplankton and zooplankton, as well as secondary consumers like fish, jellyfish, as well as crustaceans.

I’ve posted a pic of the correct answers

According to the gene interaction that is operating in the trait determination, the phenotypic ratios of the progeny produced when test-crossing a dihybrid are: a) 4:12, b) 8:8, and c) 12:4

-------------------------

To answer these questions, the first thing you should notice by looking at the phenotypic ratios provided, is that there are two genes involved in the trait, and there is interaction between them.

Let us assume diallelic genes. A and B are the dominant alleles, while a and b are the recessive alleles.

In the three cases (a, b, and c), F1 individuals are dihybrid. Their genotype is AaBb.

Observing the altered phenotype proportions of the offspring can reveal which interaction is operating in the trait determination.

We can use the phenotypic ratio to determine the interaction, so:

When talking about epistasis, we are referring to an interruption.

The epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.

In Duplicate gene action, there are two genes involved in the expression of a phenotype, and the presence of at least one dominant allele is enough to produce the dominant phenotype. Phenotypic ratio 15:1.

So now, let us make the test-cross.

Note: You will see that the cross is the same in the three cases, but the phenotypic ratio changes according to the interaction.

Cross) dihybrid individual with h0m0zyg0us recessive one

Parental)           AaBb            x          aabb

Gametes)  AB, Ab, aB, ab             ab, ab, ab, ab

Punnett square)     AB            Ab            aB            ab

                 ab       AaBb        Aabb        aaBb        aabb

                 ab       AaBb        Aabb        aaBb        aabb  

                 ab       AaBb        Aabb        aaBb        aabb

                 ab       AaBb        Aabb        aaBb        aabb

F2) Phenotypic ratio

***Double recessive epistasis  ⇒  4:12

Both genes in recessive state inhibit the expression of the trait.

***Recessive epistasis  ⇒  8:8

In h0m0zyg0us recessive state, Gene A inhibits the expression of B.

***Duplicate gene action   ⇒  12:4

Only one dominant allele, either A or B, is enough to express the trait.

Phenotypic ratios:

a) 4:12 = 1:3

b) 8:8 = 1:1

c) 12:4 = 3:1

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