Why do cells need to carry out
cellular respiration?
A. to obtain water
B. to release the energy in food
C. to make copies of itself

Answers

Answer 1

Answer:

B

Explanation

They have to realease things somehow


Related Questions

Can anyone help me with my homework

Answers

Answer:

1) True

2) True

3) False

4) True

5)True

Why are the phosphorous and sulfur cycles considered to be sedimentary cycles? Use the word reservoir in your answer.

Answers

Answer:

The phosphorus cycle:  is a sedimentary cycle (unlike carbon, oxygen, and nitrogen),Phosphorus enters the biosphere almost entirely from the soil through absorption by plant roots.

The sulfur cycle is the collection of processes by which sulfur moves between rocks, waterways

Explanation:

Sedimentary cycles are the ones in which the reservoir is the Earth's crust.

Hope this helps!!

Which correctly lists the three elements that geologists measure to determine the age of an organism's remains?
argon, nitrogen, and carbon-12
carbon-14, nitrogen, and carbon-12
O nitrogen, potassium, and carbon-14
carbon-12, potassium, and argon

Answers

Answer:

I think that it will be option b. Carbon 14. Nitrogen. Carbon 12

Explanation:

They use something called carbon dating and its measured by the half life decay of the radioactive isotopes in carbon I believe

Answer:

Hi, there the answer is

carbon-12, potassium, and argon

Explanation:

During which eon did oxygen begin to build up the most in Earth’s atmosphere?

Hadean

Phanerozoic

Archean

Proterozoic

Answers

during the phanerozoic eon

Answer:

Proterozoic eon

1.What is the most variable class of RNA?

2.What is the main function of mRNA?

Answers

Answer:

1. mRNA

Explanation:

2. messenger RNA (mRNA) carries the protein blueprint from a cell's DNA to its ribosomes, which are the "machines" that drive protein synthesis.

neverminddddddddddddddddddddddddddddddddd

Answers

Answer: DUDEEEEEEEEEEEE

Explanation: Dude.. dude.. dude... dude....

Robert Hooke looked at a sliver of ______ through his microscope, where he noticed "pores" or "cells" in it. *

Answers

Answer:

cork

Explanation:

please mark this answer as brainliest

Resuelve el problema relacionado con las etapas del ciclo menstrual: "Si el día fértil de la polola de Luciano es el 09 de noviembre y ella tiene un ciclo de 28 días ¿ Cómo puede calcular el primer día de menstruación de su polola en ese mes y el período fértil? En la respuesta debes registrar: Primer día de menstruación, Día de ovulación y período fértil.

Answers

Answer: El primer día de la menstruación comenzaría el 26 de octubre y el período fértil es desde el 6 de noviembre hasta el día 9 (fecha de ovulación)

Explanation:

El ciclo menstrual está compuesto por cuatro fases: menstruación, fase folicular, ovulación y fase lútea.

Menstruación: Eliminación del revestimiento engrosado del útero (endometrio) del cuerpo a través de la vagina. El flujo menstrual contiene sangre, células del revestimiento del útero (células endometriales) y moco. La duración media de un periodo es de entre tres días y una semana.Fase folicular: Comienza con la menstruación y termina con la ovulación. La glándula pituitaria libera la hormona estimulante del folículo (FSH), estimulada por parte del hipotálamo. Esta hormona estimula al ovario para que produzca entre cinco y 20 folículos (nódulos o quistes diminutos), que se acumulan en la superficie. Durante la fase folicular, el folículo en desarrollo provoca un aumento del nivel de estrógenos. El hipotálamo, en el cerebro, reconoce este aumento y libera una sustancia química llamada hormona liberadora de gonadotrofina (GnRH). Esta hormona hace que la hipófisis produzca niveles elevados de hormona luteinizante (LH) y FSH. En el plazo de dos días, los altos niveles de LH desencadenan la ovulación. Ovulación: El óvulo es conducido hacia la trompa de Falopio y hacia el útero por medio de ondas de pequeñas proyecciones similares a pelos. La vida del óvulo típico es de sólo unas 24 horas. A menos que se encuentre con un espermatozoide durante este tiempo, morirá. Entonces, la ovulación consiste en la liberación de un óvulo maduro desde la superficie del ovario. Suele producirse en la mitad del ciclo, unas dos semanas antes de que comience la menstruación.Fase lútea: Durante la ovulación, el óvulo se desprende de su folículo, pero el folículo roto permanece en la superficie del ovario. Durante las dos semanas siguientes, aproximadamente, el folículo se transforma en una estructura conocida como cuerpo lúteo. Esta estructura secreta progesterona y estrógeno. Esta combinación de hormonas mantiene el revestimiento del útero engrosado, a la espera de que se adhiera un óvulo fecundado (implante). Si el óvulo fecundado se implanta en el revestimiento del útero, éste produce las hormonas necesarias para mantener el cuerpo lúteo. Esto incluye la gonadotrofina coriónica humana (HCG), la hormona que se detecta en un análisis de orina para detectar un embarazo. El cuerpo lúteo sigue produciendo los niveles elevados de progesterona necesarios para mantener el grosor del revestimiento del útero. Si no se produce el embarazo, el cuerpo lúteo se marchita y muere, normalmente alrededor del día 22 de un ciclo de 28 días. El descenso de los niveles de progesterona hace que el revestimiento del útero se desprenda (menstruación)

La duración media del ciclo menstrual es de 28-29 días, pero puede variar entre las mujeres y de un ciclo a otro. La duración del ciclo menstrual se calcula desde el primer día de la menstruación hasta el día anterior al inicio de la siguiente.

Si consideramos que el primer día fértil es el 9 de noviembre y el ciclo es de 28 días, el primer día de la menstruación comenzaría el 26 de octubre y el período fértil es desde el 6 de noviembre hasta el día 9 (fecha de ovulación) Esto es porque la menstruación ocurre aproximadamente 14 días luego de la ovulación si el ciclo es de 28 días. Los días más fértiles son aproximadamente desde 3 días antes de la ovulación. Aunque en algunos casos, la fertilidad puede durar hasta dos días después de la ovulación.

Plz help ASAP!! No links or files or you’ll be reported.

Answers

Answer: Nephrons eliminate glucose and other waste from the body  or option C.

Which type of tree ends up dominating many landscapes over time because they will slowly make it harder for other types of trees to grow?

Question 5 options:

Shrubs


Conifer


Deciduous


Grasses

Answers

Answer: conifer

Explanation: I took a test with the same question and I got it right but other than that I have no explanation

Answer: conifer

Explanation: i took the quiz and got it right

hope it helps:)

true or false
almost all cells have a nucleus

Answers

Answer:

True

Explanation:

Almost all cells have a nucleus. Haemoglobin is red blood cell but has no nucleus, prokaryotes have plasmid and not a nucleus sooo... Yea

Los hidrocarburos se forman con la Unión de los elementos carbono e hidrógeno hay dos grandes grupos que son:

Answers

Answer:

Alcanos, alquenos y alquinos.

Explicación:

Los hidrocarburos se forman con la unión de los elementos carbono e hidrógeno, hay tres grandes grupos de hidrocarburos que son alcanos, alquenos y alquinos. Estos hidrocarburos se dividen en grupos según el tipo de enlace. Los alcanos son los hidrocarburos que contienen enlaces simples entre átomos de carbono, los alquenos tienen un doble enlace entre átomos de carbono, mientras que los alquinos contienen un triple enlace carbono-carbono.

All organisms need energy and
to live, grow, and reproduce. Both of these things cycle
through an ecosystem through its organisms.
sunlight
decomposers
matter
reproduction

Answers

Answer:

Sunlight

Explanation:

A symbiotic relationship in which one species benefits and the other is harmed is known as mutualism. predation. commensalism. parasitism.

Answers

Answer:

Parasitism

Explanation:

Example: Mosquitoes feed off the blood of a human and is benefitted, the human is harmed because the mosquitoe exposed he/she to malaria.

A symbiotic relationship in which one species benefits and the other is harmed is called parasitism. The parasite lives on the food of the host. Fourth option is correct.

What are different types of symbiotic associations?

In symbiosis, two organisms are present in close contact. There are different types of relationships seen in nature, such as mutualism, commensalism, parasitism, etc.

Mutualism occurs when two organisms, such as lichen, benefit from one another. Lichen is an association of algae and fungi. Algae makes food that is consumed by fungi, and fungi provide algae for a place to live.

In parasitism, one is the host, and the other is the parasite. An example is the tapeworm in the human intestine. Tape worms consume digested human food and harm humans by spreading their population. Here, the host is negatively impacted by the presence of parasites.

In predation, both are harmed as both are involved in the fighting. In commensalism, one party gets benefits while the other is not harmed by the association.

Hence, the fourth option is the correct answer, which is parasitism.

To learn more about the symbiotic association, refer to the following link:

https://brainly.com/question/22589174

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Question 14 (2 points)
A series of organisms listed in a way that shows which is a food source for another is
called a(n)
A
while an)
Ą
is made up of multiple connected energy paths in an ecosystem.

Answers

Answer:

a

Explanation:

the answer is a ecosystem

A Series of organisms listed in a way that shows which .....

Bees play a central role in the health of terrestrial ecosystems because they are vital
to the pollination of plants. The extinction of bees could cause the collapse of plant-
based terrestrial (land) ecosystems. Based on this description, bees can best be
described as a

A.native species
B.foundation species
C.keystone species
D.specialist species

Answers

Answer:

C

Explanation:

Bee can be described as a key stone speices

After a volcano erupts and destroys an ecosystem, a few organisms are able to begin growing from the decaying organic matter left behind. What do we call those organisms that are able to grow in little or no soil that first appear?

Answers

Answer:Pioneer species

Explanation: Pioneer species are the first species to live in an area after it has been destroyed as mentioned.

Certain mental problems are thought to be caused by not having enough
neurotransmitters. Why would a lack of neurotransmitters cause problems?
A. Neurons would not be able to receive sensory messages.
B. Neurotransmitters send signals from neuron to neuron.
C. Neurons would not be able to grow longer.
D. Neurons would not be able to move to new areas.

Answers

Answer:

B. Neurotransmitters send signals from neuron to neuron.

Explanation:

Lack of neurotransmitters may cause problems because neurotransmitters send signals from neuron to neuron.

The lack of neurotransmitters cause problems because neurotransmitters send signals from neuron to neuron. Therefore, option (B) is correct.

A neurotransmitter is a molecule that a neuron secretes to influence another cell at a synapse. Another neuron, a gland or muscle cell, or the target cell, could be the cell that receives the signal.

Your body cannot function without chemical messengers called neurotransmitters. Chemical signals, or "messages," are carried from one neuron (a nerve cell) to the next target cell by them. The following objective cell can be another nerve cell, a muscle cell or an organ.

Learn more about neurotransmitters:

https://brainly.com/question/9725469

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Chromosomes are SMALLER than genes and are found in DNA.
True
False

Answers

Answer:True

Explanation:

True, Chromosomes contain smaller units of genetic material called DNA.

8. The graph below shows the reaction rates of two different reactions. Which of the following statements could explain the difference in the two reactions? ​

Answers

Answer:

These two reactions have different reactants, bonding and catalysts.

Explanation:

The two reactions are different from one another due to fusion of different reactants as well as different products. These two reactions may have different types bonding i.e. covalent, ionic or metallic bond etc between their atoms. In these two reactions, different types of catalyst are used which helps in speedup the chemical reaction so we can conclude that these two reactions have different reactants, bonding and catalysts in their chemical reaction.

The phylum for invertebrate animals with jointed legs is Arthropoda.

Answers

The phylum Arthropoda contains a wide diversity of animals with hard exoskeletons and jointed appendages. Many familiar species belong to the phylum Arthropoda—insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water (Fig. 3.72).

Which type of tectonic plate interaction forms a mid ocean ridge?

Answers

Answer:

Divergent plate  

Explanation:

A semi ocean ridge is formed by the interaction of divergent boundaries. Around divergent plate boundaries, as additional sea floor is formed as the Earth's tectonic plates expand outward, half ridges form. Igneous material grows to the ocean bottom when the plates split, resulting in massive basalt volcanic activity.

two of the four principal classes of organic compounds are proteins and nucleic acids. what is the relationship between proteins and nucleic acids?

Answers

Answer:

Nucleic acids contain the genetic information to make proteins.

According to the diagram, during the last 40 million years, the structure of the horse’s foot has



lost its toes _


become smaller


grown toes


remained the same size

Answers

Answer:

gotten smaller

Explanation:

Investigate the optimal amount of foliage for the green,
long furred slinquettes' population.

Answers

Answer:

k

Explanation:

Explain the causes of the seasons

Answers

Answer:

weather

Explanation:

Earth has seasons because of its axis is tilted.Earths axis is always pointed in the same direction so different parts of Earth get the suns direct rays throughout the year.For example in summer the sun rays hit that region more directly than at any other time of the year. Have a good day

Although strychnine is colorless, it has a very strong bitter taste.

A.True
B.False

Answers

It’s True because I had this on a test


Punnett's Squares
These show the 2 alleles of each parent plant crossed with each
other and the resulting 4 possible offspring with T= tall, = short.
TT = dominant tall, 17 = recessive short, Tt = mixed hybrid
TT = dominant tall (genotype tall, phenotype tall)
Tt = mixed hybrid (genotype hybrid, phenotype tall)
tt = recessive short (genotype short, phenotype short)
Using the Punnett's Squares below, name the offspring of all possible parent combinations

Answers

Answer:

All answers are in the image

at what point did the climate began to fluctuate more severely ? (2 points )

Answers

Answer:

Due to greenhouse gases.

Explanation:

When the high emission of greenhouse gases occurs, the climate began to fluctuate more severely because greenhouse gases such as carbondioxide gas and methane etc block the solar radiation that is reflected back to space which is responsible for the change of climate. If there is more greenhouse gases are emitted in the atmosphere so there is more fluctuation in the climatic condition of earth atmosphere so we can conclude that greenhouse gases leads to fluctuation of climatic conditions more severely..

Which event came first? The age of reptiles Amphibians leave the water Trilobites are one of the dominant species on Earth Early humans arise on Earth​

Answers

Answer:

Trilobites are one of the dominant species on Earth

We know it's not D, the age of reptiles was just a "wee" bit before humans, and amphibians came after trilobites.

Answer

F1 development of the ozone layer

S2 sharks and trilobites abundant in oceans

T3 plants and animals colonize land

F4 dominance of reptiles >> dominance of mammals

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