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:
Ascending branchThe 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.
Descending branchOnce 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.
What could be a human factor that could cause algae blooms?
(THIS IS 8th GRADE EARTH SCIENCE)
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.
The nucleus contains______
Answer:
If you're talking about the cell: The nucleus contains the cell's chromosones
If you're talking about the atom: The nucleus contains protons and neutrons.
Explanation:
Have a good day :)
2. Which of the following is NOT a mutagen?
radiation
cosmetic products
carcinogens
organic food
Answer:
Organic Food
Explanation:
Brainlest please!!
1. Which characteristic is shared by all prokaryotic and eukaryotic organisms?
A. the ability to reproduce asexually
B. the ability to make their own food
C. the need for a source of energy
D. the need for oxygen for respiration
Answer:
I am not sure but I believe it's c.the need for a source of energy
The characteristic is shared by all prokaryotic and eukaryotic organisms are that they need for a source of energy as to maintain the cell processes.
What is the difference between the prokaryotic and eukaryotic organisms?
The number one difference among those sorts of organisms is that eukaryotic cells have a membrane-certain nucleus and prokaryotic cells do not. The nucleus is wherein eukaryotes save their genetic information.
Mitochondria, for example, are organelles that offer eukaryotes with maximum in their power through generating power-wealthy molecules known as ATP. Prokaryotes lack mitochondria and as an alternative produce their ATP on their mobile floor membrane.Both eukaryotic and prokaryotic organisms get the power they want to develop and keep everyday cell characteristic thru cell respiratory. Cellular respiratory has 3 foremost stages: glycolysis, the citric acid cycle, and electron transport.
Read more about the respiration:
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True or False: Samples that represent as much of the whole population as possible provide stronger evidence.
True or false plants help produce carbon compounds through photosynthesis
The state of Illinois has a law that requires 25% of electricity in the state 2 be produced by renewable energy sources by the year 2025. This law is an example of
a. Green pricing
b. A renewable portfolio
c. An Energy Star promotional program
Answer:
b. A renewable portfolio
Explanation:
A renewable portfolio refers to the policies that are designed to increase the use of renewable energy sources for electricity generation. These renewable energy sources such as water, wind and solar radiation etc are used for the generation of electricity and also to reduce pollution in the environment. These renewable energy sources are present unlimited or in huge amount in our environment so its usage is beneficial for both humans and environment.
how genes control many of the characteristics of the organisms? answer asap pls
Answer:
To summarize, two things determine the traits an organism has: its genotype and the dominance or recessiveness of the alleles it has. Some traits, like flower color in peas, are controlled by a single gene, but ultimately many if not most traits in an organism are controlled by more than one gene
Explanation:
if you know you have 32% adenine you can figure out the percent of cytosine?
please hurry
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
Ips
Select all that apply. Lymph nodes are located in
the
groin.
blood.
neck.
arms.
armpits.
Answer:
Lymph nodes are located in the groin, neck, and armpits
Explanation:
They are small bean-shaped things in your body that help filter blood and in some severe and very rare cases prevent cancers
DNA replicates by breaking the bonds between its two strands, after which each strand?
A.grows to double length.
B.synthesizes a new strand
C.takes a spiral appearance
D.winds back upon itself
Answer:
i think its B
Explanation:
good luck and may the Lord bless you
A bacterium is made of _____ cells.
Answer:
prokaryotic cells
Explanation:
What happens during translation? *
A.) The cell uses information from mRNA to produce proteins.
B.) tRNA is made from mRNA.
C.) mRNA is made from DNA.
Answer:
What happens during translation? tRNA is made from mRNA.
Explanation:
Option B) is your answer. Have a great day.
Select the correct answer.
In January, Earth is closest to the Sun in its orbit. Yet the Northern Hemisphere experiences winter. Which statement explains this phenomenon?
A.
Earth completes one precession cycle in January every year.
B.
The Northern Hemisphere is located at high latitudes.
C.
The Northern Hemisphere is tilted away from the Sun.
D.
The eccentricity of Earth’s orbit is high in January.
E.
The obliquity or tilt of Earth is greater than 23.5° in January.
Answer:
C. The Northern Hemisphere is tilted away from the sun
In January, Earth is closest to the Sun in its orbit, yet the Northern Hemisphere experiences winter because the Northern Hemisphere is tilted away from the Sun; this is option C.
What is Earth's axis tilt?The Earth's axis is tilted at an angle of approximately 23.5 degrees relative to the plane of its orbit around the Sun. This tilt is the primary reason for the seasons on Earth. As the Earth orbits around the Sun, the orientation of its axis relative to the Sun changes, resulting in different parts of the planet receiving varying amounts of sunlight throughout the year. When the Northern Hemisphere is tilted away from the Sun, as it is in January, the Sun's rays hit the Earth at a lower angle, resulting in less direct and less intense heat and light. This means that the Northern Hemisphere receives less sunlight and experiences colder temperatures, resulting in winter.
Hence, in January, Earth is closest to the Sun in its orbit, yet the Northern Hemisphere experiences winter because the Northern Hemisphere is tilted away from the Sun, which is option C.
Learn more about the Earth's axis tilt here.
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What type of energy transformation takes place during cellular respiration?
Answer: The energy transformation that takes place during cellular respiration is the conversion of glucose (chemical energy) to another form of compound with high energy bonds (adenosine triphosphate) that can be readily used by the body. All energy on Earth comes from the sun.
Explanation:
Mitosis vs. Meiosis answer chart
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]
The cells undergo mitotic division to increase the number of cells to replace the worn out cells and for growth.In Mitosis, there are 4 stages, they are, Prophase, Metaphase, Anaphase and Telophase.In mitosis, cell divide once to form 2 daughter cells.In mitosis 2 daughter cells are produced.No, Chromosomal Number remains the same in mitosis i.e. 46.The final result of mitosis is two identical cells which are called daughter cells[tex]\Large{\textbf{Meiosis:}[/tex]
In meiosis, cells divide to produce gametes(i.e. sex cells) for the sexual reproduction.Meiosis occurs in 2 division i.e. Meiosis 1 and Meiosis 2(It is just Mitosis). The stages that are involved in these 2 division are 8.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:
During the prophase of meiosis 1, crossing over of genetic material between the homologous maternal and paternal chromosomes takes place which causes exchange of DNA fragments between the chromosome resulting is genetic diversity. During the anaphase of the first meiotic division, there is random distribution of maternal and paternal homologous chromosomes among the daughter cells which are produced as a result of meiotic division._____________________________________Best Regards,'Borz'
i need it fast
After chewing foods like rice, potato and bread, for a while, we can feel a mild
sweet taste. Give reason for this.
dude, you asked brainly the whole worksheet?? Do it yourself sreerag!!
Please I need major help! Help me please?!?
Darwin studied which animal to support his idea of the Theory of Evolution by Natural
Selection?
Answer: A visit to the Galapagos Islands in 1835 helped Darwin formulate his ideas on natural selection. He found several species of finch adapted to different environmental niches. The finches also differed in beak shape, food source, and how food was captured. brainliest??
Explanation:
"Darwin studied the beak morphology of Galapagos finches to support his idea of the Theory of Evolution by Natural Selection. He was fascinated by how every finch has a unique adaptive feature used depending on the relied resources in the environment, which is the main reason why he chose this animal to study in support to his theory."
Hope this helps! Lmk if it does :D
'having two sets of genes in the germ cells is possible' . clarify this statement with reasons
Answer:
that I have a a but this is the real account of Finn have a great day today with my mom said you didn't want me there was an amazing person I am so
What happened to the oil released offshore? What effect could this have on resource availability for organisms that live near or around the shore?
Answer:
Damaged the marine organisms.
Explanation:
The oil released offshore causes damaged to the organisms lives at that region of water because oil is a non-polar solvent which spreads on the sea flood can adversely affected the fish and other aquatic organisms. The resources which are available to the organisms are decreases which leads to lowers the growth of aquatic animals as well as adversely affected the marine ecosystem near or around the sea shore.
Answer:
When oil is released offshore it causes damage to the organisms that live at that area in the water. Oil can spread on the sea floor and can negatively and toxically affect all of the organisms in the water. The resources that these organisms have to survive are decreasing. This leads to a lower survival rate and growth of the organisms. The organisms aren't the only things that are affected because the nearby marine ecosystem they live in is also in danger. If oil spills continue like this, our survival rate is also at risk.
Explanation:
Hope this helps you.
Include in your answer how human activities are affecting biodiversity and how they influence the corn species’ population dynamics.
i dont know bro i wish i could help
GIVING BRAINLIEST!!!!!!
A student made a table to show information about the physical structures and organs of birds. What statement best describes how to correct an error in the table?
The feathers support the body.
The feathers help the bird move.
The ovaries produce the eggs.
The ovaries produce the sperm.
Help please!?!?!??!?!?????
Answer: A
Explanation: Hope this help :D
1. Elaborar resumen del texto sobre los estados de la materia( usar alguna estrategia: mapa mental, conceptual, historia, cuento)
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.
how does the skin increase body heat through metabolic rate?
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!
Como identificar un nucleotido del ADN
Answer:
By the build
Explanation:
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.
what explains the diffrence in traits between all living organisms remember it begins with v
Answer:
Variation explains the difference in traits between all living organisms.
Explanation:
Without variation it would be pretty impossible to notice any "differences" in traits, especially between living organisms.
What percentage of the offspring are green , if you crossed a heterozygous pea plant with another heterozygous
pea plant?
50%
O 75%
O 25%
O 100%
Answer:100 percent
Explanation: This is because if both P plants are heterozygous both of them are caring an equal amount of genes hence they have and are 100% P plant heterozygous
An allele arises in a population that helps individuals digest cellulose. While the allele starts in only one organism, it increases in allele frequency because it allows organisms that carry it to reproduce more. What is this an example of
ANSWER: A NATURAL SELECTION.
EXPLANATION:
When allele has direct effects on the organism and the environment, it is termed natural selection. It either affects an organism positively by causing more DNA reproduction, leading to the increase in allele’s frequency, or negatively by decreasing it .
However, this shouldn't be mistakened for genetic drift, where allele increase or decrease is established in the random organisms that survived.