Which of the following does DNA have that
RNA does not? (Check all that apply)

One sugar phosphate
backbone

Two sugar phosphate backbones

Uracil

Thymine

Single helix shape

Double helix shape

Answer:

prokaryotic cells

Explanation:

Answer:

Biodiversity is very essential to the health of an ecosystem.

Explanation:

Biodiversity is essential to the health of an ecosystem because biodiversity provides functioning ecosystems that provides oxygen, clean air, clean water, pollination of plants, pest control, wastewater treatment and many ecosystem services. The change of temperature of the environment greatly affect the organisms because the organisms needs specific environment for growth and development. Habitat change, climate change, invasive species, overexploitation, and pollution are the factors that affect biodiversity. These factors causes increase or decrease in the biodiversity of the ecosystem.

Answer:

it should say it on the answer box

Explanation:

Answer:

The effector organ is affected by the fourth structure of the reflex arc.

Explanation:

When talking about the reflex arc, we refer to the sequence of events that occur for the body to react to an external stimulus.

In general terms, the peripheric nervous system receives information from a stimulus coming from the external environment. This information is sent to the central nervous system, where it is processed. From the CNS, another signal is sent as a response to the stimulus. This mechanism is known as the reflex arc.

Five elements compose the reflex arc, which are receptors, three types of neurons, and effectors.

There are three types of neurons involved in the mechanism:

• Afferent or sensorial neurons

• Interneurons

• Efferent or motor neurons

Action:

The stimulus reaches the body and is received by the specialized sensory receptors. Information is received by these receptors and converted from stimuli energy (temperature, pressure, light, etc.) to action potential energy. Afferent neurons, placed in the dermis and epidermis, receive information from receptors, react and send the information to the central nervous system as nerve impulses.

Once the information reaches the central nervous system, it is processed by the interneurons that analyze it before sending a response. Interneurons manage many sensorial signals, evaluate and compare them, and send a motor response.

Efferent neurons receive information from the interneurons and are stimulated to carry these new signals from the central nervous system to the cells of the effector organs. The effector organ can be a muscle or a gland.

Finally, the target tissue responds to the stimulus as a contraction, if it is a muscle, or as hormones release if it is a gland.

Answer:

Organic Food

Explanation:

Brainlest please!!

Answer:

Your skin regulates your body temperature through blood vessels and through the process of sweating. The skin is in effect your body's thermostat. When you're out in cold weather, your skin triggers shivering so the blood vessels will contract and keep you as warm as possible.

Explanation:

I hope that this answer has helped you to more thoroughly understand your question asked. If you have any further questions, please do not hesitate to ask them below.        

Have a great rest of your day/night!

Answer:

3

Explanation:

now brainliest plsssssssssss

Answer: 18%

Explanation:

Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio

32% Adenine = 32% Thymine

32 + 32 = 64 100 - 64 = 36 36/2 = 18

18% of Cytosine and 18% of Guanine

Fertilizer Runoff

The excess nutrients provided by the fertilizer allow for rapid growth of algae and microorganisms. This fertilizer runoff can come from agricultural lands, or from residential areas.

Answer:

The Archean Eon was preceded by the Hadean Eon, an informal division of geologic time spanning from about 4.6 billion to 4 billion years ago and characterized by Earth's initial formation. Records of Earth's primitive atmosphere and oceans emerge in the earliest Archean (Eoarchean Era).

Answer:

the Hadean Eon

Explanation:

Answer:

D. Fill the ventricles.

Explanation:

The medical definition is "an anatomical cavity or passage especially : a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles."

Answer:

Hello There!!

Explanation:

The answer is D. Fill the Ventricles.

hope this helps,have a great day!!

~Pinky~

Answer:

En un concurso la probabilidad de ganar el premio A es 0,5 la probabilidad de ganar el premio B es 0,15 mientras que la probabilidad de ganar los dos regalos es de 0,05. Calcula la probabilidad de no ganar ningún regalo.

Answer:

1. Millipedes can find food easily under logs. 2. Millipedes can stay out of hot environments under a log. 3. Millipedes can stay away from predators under a log.

Answer:

You are more easily able to see the correlation between the two values

Explanation:

Answer:

no the carrying capacity of an ecosystem can't change

it is literally impossible hope it helps you have a good day please mark me as brain list

Answer:

No carrying capacity of an ecosystem doesn't change.

Explanation:

Each organism that lives there will have a different carrying capacity, one that interacts with everything around it. If the climate changes and the resources a particular animal needs for food drop, for example, that change in carrying capacity for one species will affect other populations in the area.

The word biology comes from the Greek word bios, meaning life, and logos, meaning study.

Answer:

i think its B

Explanation:

good luck and may the Lord bless you

Answer:

why do cells divide is mitosis

mitosis is understood to involve five phases

how many daughter cells produced in mitosis two

how many daughter cells produced in meiosis four daughter cells

A condition in which every cell in the body has an extra set of chromosomes is not compatible with life. In some cases, a change in the number of chromosomes occurs only in certain cells. When an individual's cells differ in their chromosomal makeup, it is known as chromosomal mosaicism .

HOPE  THIS helps

Explanation:

Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.

[tex]\Large{\textbf{Mitosis:}}[/tex]

[tex]\Large{\textbf{Meiosis:}[/tex]

       The stages of Meiosis 1 are,

                                            (a) Prophase (which is sub-divided into 5 more  stages which are Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis)

                                             (b) Metaphase,

                                             (c) Anaphase,  

                                             (d) Telophase.

        The Stages of Meiosis 2 are, Prophase, Metaphase, Telophase and Anaphase which are same as mitosis.

     3. In meiosis, Cell divides twice.

     4. In meiosis, 4 daughter cells are produced.

     5. Yes, the chromosomal number in mitosis is reduced to half than normal i.e. 23

     6. In meiosis, the final result is 4 haploid cells. If meiosis occurs in male then these haploid cells will be called sperms, if it occurs in female then they are called Ova(egg).

Just to give you some insight knowledge of Meiosis Im adding some extra points

[tex]\Huge\textbf{Meiosis:}[/tex]

Meiosis is a special type of cell division, which occurs only in the germ cells during the process of development and maturation to form gametes. It consists of two successive cell divisions,

Meiosis 1 : First meiotic division, that reduces the NUMBER of chromosomes i.e. the parent cell is diploid(46 Chromosomes) and the daughter cells are haploid(23 Chromosome). It also causes genetic variation in the haploid by cross linkage.

Meiosis 2 : Second meiotic division (Meiosis II) starts with two haploid parent cells and ends with four haploid daughter cells. Meiosis 2 like Meiosis 1, does not reduce the NUMBER OF CHROMOSOME that means the forming 4 daughter cells are haploid and their number of chromosome remains the same as the parent. BUT Haploid cells that go into the meiosis 2 have MORE AMOUNT OF CHROMOSOME THAN USUAL, thus MEIOSIS 2 REDUCES the amount of chromosome rather than the number of chromosome.

The DNA of the primitive germs cells is replicated prior to the meiosis 1 only and there is no replication of DNA before Meiosis 2. The four final cells reulting from the two meiotic divisions are not only haploid(i.e. containing 23 chromosome) but they are also containing 1n amount of DNA so that when the gametes fuse together forming a zygote, both the amount and number of chromosome and DNA remains SAME.

[tex]\Large\text{Why is Meiosis Important?}[/tex]

Meiosis is essential for the sexual reproduction of eukaryotic organisms because it enables genetic diversity through recombination, and the repair of genetic defects.

It contributes in genetic reassorment which ensures the genetic diversity in the offsprings. The genetic reassortment takes place by following two mechanisms:

Answer:

Sólido, líquido, gas y plasma.

Explicación:

Materia son las sustancias que ocupan espacio y tienen peso. Hay cuatro estados de la materia, es decir, sólido, líquido, gas y plasma. Todos los materiales presentes en este universo en estos cuatro estados. Los estados de la materia cambian con el aumento o la disminución de la temperatura del material. si la materia sólida se calienta, se derrite y cambia a estado líquido y luego gaseoso mientras que, por otro lado, la temperatura decreciente conduce a la condensación y congelación de la materia que causa el cambio de estado gaseoso a líquido y sólido. El plasma está formado por un gas de iones, átomos o moléculas.

Answer:

true

Explanation:

the majority of mutations are neutral in their effects on the organisms in which they occur . beneficial mutations may become more common through natural selection. harmful mutations may cause genetic disorders or cancer :))

Answer:

A. chemical signals from the endocrine system can affect your mood

Answer:

Lava, according to Oxford Dictionary, is defined as

"hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this."

Explanation:

I hope this helps!

Answer:

lava is a hot molten liquid of coal of fire which are erupted during volcano eruption.it occurs naturally which temperature is high no one afford its temperature. almost all got dry.

Answer:

Astronomical unit usually refers to that unit which represents the mean distance starting from the center of the earth to the center of the sun. The distance from the sun to all the planets and other astronomical bodies are represented in the astronomical unit. It is denoted by AU. This unit is mainly used by the Planetary scientists and the Astronomers, as it is helpful in understanding the relative distance between two objects in the solar system.

Explanation:

Answer:

distance between stars  

Explanation:

The distance between the Earth and the stars is enormous. As a result, larger units like light-years are useful for expressing these distances. When a star is eight light-years away from the Earth, the light from that star takes eight years to reach us. To put it another way, the light that we see today originated from that star eight years ago.  

The astronomical unit usually refers to the unit that indicates the average distance between the earth's center and the sun's center. The astronomical unit represents the distance between the sun and all of the planets and other celestial bodies. AU is the abbreviation for it. Planetary scientists and astronomers mostly utilize this unit because it aids in determining the relative distance between two objects in the solar system.

Learn more about light-years

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Explanation:

When two tectonic plates slide past each other, the place where they meet is a transform or lateral fault. The San Andreas Fault is one of the best examples of lateral plate motion

Answer:

a

Explanation:

i dont know bro i wish i could help