i need help please i really don´t know

I Need Help Please I Really Dont Know

Answers

Answer 1

Answer:

It's B

Explanation:

I just looked up the answer.

Hope it helps.


Related Questions

Which type of cell division creates haploid cells?.

Answers

Answer:

meiosis

Explanation:

1. What is DNA?
2. how are nitrogen bases arranged in a DNA molecule?
3. what determines the inherited of an organism
4. what determines the inherited traits of an organism
5. how is RNA different from DNA

Answers

Answer:

1. a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.

2. is the pic

3. Genes Have Alleles

The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Animals have two copies of all their chromosomes, one from each parent.

4. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.

What structure is similar to the endoplasmic reticulum.

Answers

Answer:

The sarcoplasmic reticulum ( SR) is a membrane -bound structure found within muscle cells that is similar to the smooth endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca 2+ ).

Explanation:

Which diploid cells are produced by an embryonic germ cell?.

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Spermatogonla im pretty sure

Help me!!! 30 POINTS

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Answer:

12.5 m/s

Explanation:

Total distance traveled = 500m

Time car was moving = 40s

Avg speed in m/s = 500/40 = 12.5 m/s

Hope this helps!

A prokaryotic organism can be classified in the domain of.

Answers

Answer:

Archaea or the domain bacteria

Explanation:

Prokaryotic organisms belong either to the domain Archaea or the domain Bacteria; organisms with eukaryotic cells belong to the domain Eukarya. 5. Microorganism transfer genes to other microorganisms through horizontal gene transfer - the transfer of DNA to an organism that is not its offspring.

The erythrocyte (red blood cell) count increases after a while when an individual goes from a low to a high altitude because the ________.

Answers

The erythrocyte count increases after a while when an individual goes from a low to a high altitude because the concentration of oxygen is lower at high altitudes.

What are erythrocytes?

The erythrocytes are specialized red blood cells required to transport oxygen to all cells in the body.

This oxygen is fundamental for carrying out the process of cellular respiration by means of cells and tissues.

The amount of red blood cells in the bloodstream is dependent on the altitude at which the person lives.

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What is the difference between plants breathing and photosynthesis?​

Answers

The principal difference, however, between photosynthesis and respiration (plants breathing is called respiration) is that photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell.

hope it helps...!!!

other than co2 and water, state two conditions necessary for the synthesis of glucose in plants

Answers

Answer:

Sunlight and Chlorophyll
Explanation:

An examination of a marine sea star that had died after it was mistakenly placed in fresh water would likely show that it died because ________.

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An examination of a marine sea star that had died after it was mistakenly placed in freshwater would likely show that it died because it was so hypertonic to the freshwater that it could not osmoregulate

Hope that helps!

The relaxation of skeletal muscle relies on the activity of the ________, which decreases cytoplasmic calcium concentration.

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Answer:

biologic capsules

Explanation:

Height in humans generally shows a normal (bell-shaped) distribution. What type of inheritance most likely determines height

Answers

Answer:

polygenic inheritance

Explanation:

Mushroom, yeast, penicillian and bread mould are common example of fungi . Suggest the importance of each of them to human beings.​

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Answer:

See below ↓↓↓↓

Explanation:

Mushroom

They are also used for bioremediation, or cleaning up the environment. They’re able to break down oil and other environmental contaminants. Fungus can also help to make better compost.

Yeast

In food manufacture, yeast is used to cause fermentation and leavening. The fungi feed on sugars, producing alcohol (ethanol) and carbon dioxide.

Penicillin

Penicillin is an antibiotic used to treat certain types of bacterial infections

Bread mould

The molds that grow in your mold feed on the bread, cheese, and other foods. A mold produces chemicals that make the food break down and start to rot.

Which type or types of RNA contain a copy of the instructions that a gene carries

Answers

Which type of types of RNA contain a copy of the instructions that a gene carries

· 1. mRNA only

mRNA

Messenger RNA (mRNA) copies the genetic instructions from DNA in the nucleus, and carries the instructions to the cytoplasm.

What stage of meiosis is the picture attached showing? How do you know?

Answers

Answer:

Metaphase

Explanation:

spindle fibers attach to the chromosomes which line up along the the cell's mid planechromosomes align at the equator

Place the steps of meiosis l and lol into the correct order from top to bottom
anaphase l, telophase l, cytokinesis, metaphase ll, telophase ll , prophase l, metaphase l, interphase,anaphase ll

Answers

1- Prophase, Metaphase, Anaphase, Telophase+Cytokinesis
2-Prophase, metaphase, Anaphase, Telophase+Cytokinesis

I would suggest trying to make a a song with actions to help you remember

Of the 2. 5% fresh water found on earth, how much of it is frozen in polar ice?.

Answers

About 2.1% of all of Earth's water is frozen in glaciers. less than 1% is in all living plants and animals.

A heron is affected by many factors in its environment. What distinguishes the biotic factors from the abiotic factors

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Answer:

Biotic factors are living -- fungi, animals, plants, etc.

Abiotic factors are nonliving -- weather, water, rocks, etc.

Explanation:

What do we call the first organism in any food chain to get energy directly from a producer?.

Answers

The primary consumer is the first organism in any food chain to get energy directly from a producer.

What are primary consumers?

Primary consumers are the set of organisms that dey direct energy from the producers which are grass. They are called herbivores because they feed on plants. Examples of herbivores or primary consumer are sheep,goat, cattle and so on. They get their direct energy from plants.

Therefore, The primary consumer is the first organism in any food chain to get energy directly from a producer.

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Answer: It’s Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms.

Explanation:

What do geologists think happened during the last ice age? A. The Siberian land bridge was covered in water B. Glaciers retreated worldwide C. A mass extinction occurred D. Sea levels dropped 300 feet

Answers

Answer:

D

Explanation:

Just got it right on my quiz :)

Geologists believe that during the last ice age, glaciers advanced and retreated worldwide, resulting in changes in sea levels and climate. So, the correct option is B.

Who are Geologists?

Geologists are scientists who study the Earth, its composition, structure, processes, and history.

During the last ice age, which lasted from about 115,000 to 11,700 years ago, Earth's climate was much colder than it is today. Geologists believe that a variety of factors contributed to the ice age, including changes in Earth's orbit, atmospheric composition, and plate tectonics.

One major feature of the last ice age was the formation of massive ice sheets and glaciers, which covered much of the Northern Hemisphere. These ice sheets were up to 3 miles thick and covered Canada, Greenland, and parts of the northern United States and Europe. As a result, sea levels dropped by as much as 300 feet, exposing land bridges between continents and allowing humans and animals to migrate across them.

Another feature of the last ice age was the occurrence of periodic "ice ages within an ice age" known as stadials. During these stadials, temperatures in some regions of the world dropped by as much as 20 degrees Celsius, leading to widespread glaciation, droughts, and other environmental changes.

Overall, the last ice age was a complex and multifaceted period in Earth's history, and scientists continue to study it to better understand the mechanisms that drive climate change on our planet.

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What makes fingerprints individual? How do scientists match a fingerprint to a specific person?

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Answer:

ridge characteristics, which are ridge endings, enclosures and other details. Identical fingerprints not only show the same ridge characteristics, but they show them in the same location on the finger.

Explanation:

Are oomecytes harmful to humans?

Answers

Answer:

Human diseases caused by fungi include valley fever and several infections common to AIDS patients. In addition, in water environments, oomycetes cause destructive diseases in people and animals. For example, they attack the legs, eyes, and brains of rice farmers in Southeast Asia, and they destroy spawning salmon

Explanation:

Both parents have one copy of a dominant allele for Gene 87 and one recessive allele for Gene 87. What is the chance that their children will inherit the recessive condition (i.e., two copies of Gene 87)

Answers

If you do a punnet square with one dominant one recessive for each parent, you’ll have a 75% chance

Extinctions that occur at a moderate rate and continuously open a limited number of opportunities for the origin of new species and new niches are known as __________ extinctions

Answers

Extinctions that occur at a moderate rate and open a limited number of opportunities for the origin of new species are known as background extinctions.

What are background extinctions?

Extinction is the physical disappearance of one given species and/or population in an ecosystem.

The term 'background extinctions' makes reference to the extinction that does not generate new niches in an ecosystem.

Background extinctions are well known because they do not contribute to the emergence of biodiversity.

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The body structures that enable reproduction are the.

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The body structures such as ovaries, testes, and external genitalia enable reproduction.

The body structures that enable reproduction are the reproductive organs or reproductive systems.

In males, the reproductive organs include the testes, epididymis, vas deferens, seminal vesicles, prostate gland. These organs produce and deliver sperm cells for fertilization.

In females, the reproductive organs include the ovaries, fallopian tubes, uterus, and cervix. The ovaries produce eggs (ova) and release them into the fallopian tubes, where fertilization can occur. The uterus provides the environment for the development of a fertilized egg into a fetus, and the cervix connects the uterus to the vagina.

Additionally, both males and females have accessory reproductive structures that support the reproductive process. These include glands that produce reproductive fluids (such as semen and vaginal fluids), as well as structures like the breasts, which play a role in breastfeeding.

Overall, the reproductive organs and systems in males and females work together to enable the processes of fertilization, gestation, and childbirth, allowing for the continuation of the species.

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Which chamber of the heart directly receives oxygenated blood from the lungs?.

Answers

Answer:

left atrium is the correct answer

In binomial nomenclature the first name is the _______ and the second is the ________.

Answers

Answer:

specific epithet.

Explanation: The binomial nomenclature system combines two names into one to give all species unique scientific names. The first part of a scientific name is called the genus. The second part of a species name is the specific epithet.

Answer:

In the binomial nomenclature the first name is called the genus and the second is called the specific epithet.

Explanation:

How does an increase in a deer population that feeds on plants affect the animals and plants in a certain environment

Answers

Answer down below:

If a deer population starts eating all the plants in a specific area, the plants, of course will kill the plants. But also, once all the plants will run out, all the organisms and deer will eventually die out.

Which biologic agent consists of protein-coated ribonucleic acid (RNA) or deoxyribonucleic acid (DNA) and requires a host cell

Answers

Answer:

Virus

Explanation:

A virus is a small collection of genetic code, either DNA or RNA, surrounded by a protein coat. A virus cannot replicate alone. Viruses must infect cells and use components of the host cell to make copies of themselves.

A process in which dna has the unique ability to make an exact copy of itself.

Answers

Answer:

DNA replication

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