the spinal cord stops elongating at about __________ years of age.
Answers
The spinal cord stops elongating at about 4 years of age. The spinal cord is a vital part of the human nervous system, functioning as the primary conduit for transmitting information between the brain and the rest of the body. It is composed of a bundle of nerves that extend from the base of the brain down to the lower back, and it is protected by the vertebrae of the spinal column.
During early development, the spinal cord and the vertebrae grow in tandem. However, as children age, their spinal columns continue to elongate, but the spinal cord does not. This is because the spinal cord reaches its full length by approximately 4 years of age. At this point, the spinal cord is considered to be fully mature, and its growth ceases while the spinal column continues to grow throughout adolescence.
This difference in growth rates results in the formation of the cauda equina, a bundle of spinal nerves that extend below the spinal cord's termination point. These nerves continue to grow as the spinal column elongates, allowing them to maintain proper connections with the lower extremities.
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Related Questions
what type of bonds hold the nitrogenous bases together in dna
Answers
Answer:
Glycosidic bondExplanation:
The glycosidic bond in DNA is the nitrogen-carbon coupling in between the 9′ nitrogen of purine bases (Adenine/Guanine) or the 1′ nitrogen of pyrimidine bases (Cytosine/Thymine) as well as the 1′ carbon of the deoxyribose sugar group. The synthesis of nucleoside arises from the binding of the nitrogenous base to the deoxyribose sugar via N-glycosidic linkage.
Identify the organisms that do not directly obtain energy from the sun. What do you call these organisms?.
Answers
Heterotrophs must rely on the energy of other living things, but autotrophs can generate their own energy from the sun.
What is the name for organisms that derive their energy from the sun and do not require the consumption of other organisms?An organism that has the ability to manufacture food on its own by utilising chemicals, light, water, or carbon dioxide is known as an autotroph. Autotrophs, which make their own nourishment, are frequently referred to as producers. The most well-known type of autotroph is a plant, although there are numerous other varieties of autotrophic organisms.
What living things derive their energy from the sun directly?Autotrophs. Autotrophs are living things that get their energy from the sun or from chemical reactions. Often referred to as producers, they create organic molecules from simple inorganic substances and energy.
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Please HELP! (also just need the answer)!!!!
A student observes that she's always sleepy shortly after eating lunch, and she wants to be able to pay better attention in her mid-afternoon class. She tried doing 10 jumping jacks just before the class, but still felt sleepy around the middle of the class. The next day, she tried sipping water throughout the class and found that she could pay attention until the end of the class. The student now brings a water bottle to class.
Identify how this student applied the scientific method to solve her problem.
Answers
Answer:
Explanation:
The scientific method
1. Make an observation.
2. Develop a hypothesis.
3. Test hypothesis by trying different experiements.
4. Collect data.
5. Determine if hypothesis is supported by data.
Observation Felt sleepy after eating lunch.
Hypothesis 1: Student wanted to be more alert for afternoon class and hypothesized exercise might make her feel alert to pay better attention in class.
Experimentation and data collection: Tried exercising before class to alleviated sleepiness but still felt sleepy.
Hypothesis 2: Student wanted to be more alert for afternoon class and hypothesized drinking water during class might make her feel alert.
Experimentation and data collection: Tried drinking water during class and discovered she felt more alert and was better able to pay attention in class.
Hypothesis supported through experimentation and data. Tried exercising and found it did not work. Tried drinking water and discovered it worked.
c.What happens to the atomic number as you move right on the periodic table?
Answers
Answer: the atomic number will increases
Explanation:
In a group of Syrian hamsters, some individuals have straight fur and others have wavy fur. In this group, the gene for the fur texture trait has two alleles. The allele for wavy fur (f) is recessive to the allele for straight fur (F).
Complete the Punnett square below to show all possible genotypes of the offspring from a cross between two Syrian hamsters.
Answers
Answer:
Therefore the genotype would be;FF 25% Homozygous straight furff 25% Homozygous wavy furFt 50% Heterozygous mixExplanation:
Genotype describes the combination of alleles that an individual has for a certain gene
-----hope it helps =)
Which phylum of protozoa contains organisms that are non-motile, obligate intracellular parasites?.
Answers
The phylum of protozoa that contains organisms that are non-motile, obligate intracellular parasites is Apicomplexa.
What is Apicomplexa?Apicomplexa contains many species that cause disease, including the Plasmodium species that cause Malaria.
Apicomplexa also sporozoan are the spore-producing phylum of protozoa. They are parasitic and lack contractile vacuoles and locomotor processes, they live within the body cavities or the cells of almost every kind.
Thus, this could be the answer.
Which phylum of protozoa contains organisms that are non-motile, obligate intracellular parasites? which phylum of protozoa contains organisms that are non-motile, obligate intracellular parasites? ciliates euglenozoa amoebozoa apicomplexa?
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16. In the context of the personality research methods, determining the effect of one or more variables on behaviour....
Answers
Answer:
an experiment
Explanation:
In the personality research methods, an experiment is the method determines the effect of one variable or more variables on the behavior. In personality research methods, we conclude that :
-- it can be stable as well as predictable
-- it is based on the behavior and the personality traits
-- it is resistant to the sudden changes
True or False: The chromosomes in sex cells have homologous pairs.
Answers
Answer:
True
Explanation:
Answer:
True
Explanation:
In body cells, most chromosomes are found in pairs that have the same structure and size. These homologous chromosomes carry the same genes. A homologous chromosomes pair may have different versions of the genes they carry. Once chromosome pair is made up of sex chromosomes.
Brainliest plzzzzzzz
The burrowing owl is found in dry, open areas such as grasslands, prairies, savannas, deserts, farmlands, golf courses, and other urban areas throughout most of western United States and Florida, Central America, and most of South America. It makes its home in burrows of other animals and primarily eats insects and small rodents. As humans build more cities, nearby burrowing owl habitats change due to destruction of burrows and loss of prey. Which is the least likely outcome of the habitat changes that are described?
Answers
Answer:
its population would increase
Explanation:
it says the least likely outcome which is the population increasing
Answer:
C
Explanation:
how does the nucleus contribute to the transcription and translation of genetic information into proteins.
Answers
Answer:
transcription and translation are known as gene expression. During the process of transcription, the information stored in a gene's DNA is passed to a similar molecule called RNA in the cell nucleus. A type of RNA called transfer RNA also known as tRNA assembles the protein, one amino acid at a time.
Before cells divide, they must replicate their entire genome. Explain why
replication of the genome prior to cell division is important.
Answers
Each time a cell divides into two daughter cells, its full genome is duplicated; for humans and other complex organisms, this duplication occurs in the nucleus. This minimizes the incidence of errors (mutations) that may greatly affect the resulting organism or its offspring. ...
HOPE THIS HELPED <3
Answer:
In order for all of the cells in your body to maintain a full genome, each cell must replicate its DNA before it divides so that a full genome can be allotted to each of its offspring cells. If DNA replication did not take place fully, or at all, the offspring cells would be missing some or all of the genome.
Explanation:
at which partial pressure of carbon dioxide did respiratory acidosis occur?
Answers
Respiratory acidosis occurs when partial pressure of carbon dioxide is increased. Respiratory acidosis is a state where the level of carbon dioxide (CO2) in the blood increases, resulting in a decrease in blood pH.
Acute and chronic respiratory acidosis are the two types of respiratory acidosis. The partial pressure of carbon dioxide in arterial blood (PaCO2) determines the severity of respiratory acidosis. It is the pressure exerted by carbon dioxide in the blood.
The normal range of PaCO2 is between 35 and 45 millimeters of mercury (mm Hg). When it goes beyond this range, respiratory acidosis occurs. Typically, respiratory acidosis occurs when PaCO2 is greater than 45 mm Hg.
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Two short-tailed cats are bred together. They produce three kittens with long tails, five short tails, and two without any tails. a. From these results, how is tail length in these cats inherited? b. Write out the genotypes paired with the matching phenotypes for the offspring to support your answer.
Answers
Answer:
a) Cats show incomplete dominance which means the kitten can be born with full length tails, short length tails and without tails.
b) The genotype of the parent will be heterozygous (Tt ) and the kittens will be:
Genotype | Fenotype
-TT | (long tail)
-Tt | (short tail)
-tt | (no tail).
Natural selection occurs when organisms adapt to their environment and
Answers
Answer:
survive and produce more offspring
Explanation:
i took bioooooo :)
To dissect means primarily Group of answer choices to cut open all of the answers options are correct to expose to view to remove all internal organs
Answers
Answer:
to cut open and examine the internal structure or parts of a living organism or a thing.
To dissect means cutting open something to expose its internal parts and organs.
Here, correct option is A.
It is commonly used in science and medicine to learn more about the internal structure of living things. By dissecting, scientists and doctors can gain a better understanding of the structure, function, and even behavior of organisms.
Dissecting also helps to identify any diseases, deformities, or abnormalities that may be present in the organism. It is also used to study the effects of different treatments on different organs and tissues. Dissecting helps to determine the cause of any abnormalities that may be present and can provide valuable information for medical and scientific research.
Therefore, correct option is A.
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complete question is:-
To dissect means primarily Group of answer choices
A. to cut open
B. to expose to view to remove all internal organs
C. all of the answers options are correct
D. NONE
Compare and contrast the cell structures / organelles found in plant and animal cells
• list 3 organelle / structure plant and animal cells have that are the same
• list 2 organelles / structures plant and animal cells have that are different
Answers
Answer:
Explanation:I need to get some answers too
A ligand is observed to bind its receptor on the outside of the cell. As a result of this binding, a chemical process is initiated within the cytoplasm on the inside of the cell. The original ligand was most likely a
Answers
Answer:
Substrate inhibitor, activator or a neurotransmitter.
Explanation:
The original ligand was most likely a substrate inhibitor, activator or a neurotransmitter. A ligand is a small molecule that is able to bind to proteins by weak attractive forces such as ionic bond and hydrogen bonds etc. It also transmit signals in the process from one part to another part. It also act as inhibitor and activator of reactions in the process.
What two body systems is the urinary system connected to ?
Answers
Answer: your blood vessels and digestive system.
Explanation:
The urinary system works as a filter, removing toxins and wastes from your body through urine. It uses a series of tubes and ducts to pass this waste. These tubes are connected to your blood vessels and digestive system. Your urinary system helps the rest of your body work properly.
A small 50-kilogram canoe is floating downriver at a speed of 3 m/s. What is the cance's kinetic energy?
A.) 450J
B.) 225J
C.) 7500J
D.) 16.7J
Answers
What is one thing people can do to reduce the amount of carbon in theatmosphere?A. Plant more trees.OB. Drive longer distances.OC. Use more electricity.OD. Burn more fossil fuels.
Answers
Reduction of carbon in the atmosphere
Plants consume carbon dioxide (CO2) in the process of photosynthesis as a substrate to form their food, i.e, sugars such as glucose, following the formula:
6 CO2 + 6 H2O + light --
A zygote (the cell formed when an egg and a sperm cell initially fuse) is:
A) multipotent
B) pluripotent
C) totipotent
D) omnipotent
Answers
Answer: https://rb.gy/rb1nlh copy that into search browser
Explanation:
4.) What prompted the evolutionary adaptations that led to the diversity of
life found in the ancient oceans?
5.) How did animals adapt to protect them selves from the fierce predator
Anomalocaris canadensis?
6.) What is the significance of the development of the notochord, a flexible
rod of cells that supports the axis of the body?
7.) What did animals develop to adapt and survive in the new niche of fresh
water?
8.) Why is the kidney considered an evolutionary breakthrough?
9.) How did the development of the backbone assist in the transition form a
marine to a freshwater environment?
Answers
Some animals developed hard exoskeletons or spines as a form of physical protection from Anomalocaris canadensis.
What is evolution?Evolutionary progress and environmental changes led to a greater diversity in ancient ocean life. Over time, the waters' increased oxygen concentration and nutrient richness allowed for the evolution of more complex and diverse species.
The evolution of novel adaptations and living forms was also aided by the creation of fresh ecological niches and selective forces. As an example, the development of photosynthesis-capable organisms led to the production of oxygen, which later acted as a new source of energy for the earliest animal life.
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jane accidentally closed the car door on her finger. the nail on that finger eventually fell off and one year later that nail grew back distorted. what nail structure has possibly been permanently damaged?
Answers
Matrix nail structure has possibly been permanently damaged
A nail is a claw-like plate found at the tips of most primates' fingers and toes. Nails are similar to claws found in other mammals. Fingernails and toes are comprised of a polymer called alpha-keratin, which is a robust protective protein. Alpha-keratin is present in vertebrate hooves, claws, and horns.
The nail matrix is where your fingernails and toes begin to develop. The matrix generates new skin cells, which push away the old, dead skin cells, resulting in the formation of your nails. As a result, damage to the nail bed or illnesses affecting the matrix might impair the growth of your nails.
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Which of the following correctly describes the chemical reaction for cellular respiration?
F Glucose is broken down into water, Il water is used to convert oxygen to carbon
carbon dioxide, and energy
dioxide
G Carbon dioxide and water combine in the J Carbon dioxide is absorbed and oxygen
presence of sunlight to produce glucose is released
and oxygen
Answers
Answer:
the first one
Explanation:
cellular respiration= glucose + oxygen --> energy + water + CO2
Which organisms from Kingdom Animalia are invertebrates?
Select all correct answers.
worms
amphibians
jellyfish
sponges
Answers
Identical twins=fraternal twins, Identical twins raised together =/= identical twins raised apart, Adoptive child= adoptive parents
Answers
Identical twins are the result of a single fertilized egg splitting into two identical embryos. They share almost the same genetic makeup and are of the same gender.
On the other hand, fraternal twins are the result of two separate fertilized eggs, sharing about 50% of their genes, like any other siblings.
Identical twins raised together and identical twins raised apart may have different experiences that shape their personality, behavior, and cognitive abilities, leading to variations in their outcomes.
Though their genes are the same, environmental factors play a significant role in determining their development.
Twins raised together share similar environments, experiences, and parenting styles, while twins raised apart have different experiences and may have different life events that affect their development.
An adoptive child is one who is legally taken in and raised by a couple who is not biologically related.
The child's genetic makeup is different from the adoptive parents, and they may have different behavioral tendencies, talents, and abilities. The child's development may be influenced by their genetic makeup, prenatal environment, and early life experiences.
The adoptive parents may have to deal with unique parenting challenges as they may not know the child's complete medical history or family background.
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Pluto dwells on the inner edge of the
A. Oort Cloud
B. Main asteroid belt
C. Kuiper belt
Answers
To survive hunter-gatherers changed their environment bya.Burning the prairies to prevent trees from growing.B.Spreading plants to areas beyond where they originally grew.C.Both (a) and (b)d.Neither (a) nor (b)
Answers
non mendelian inheritance explain
Answers
Explanation:
Non-Mendelian inheritance refers to the inheritance of traits that have a more complex genetic basis than one gene with two alleles and complete dominance.
The diagram below shows a cell going through a certain phase of mitosis.
Which of the following best describes what happens during the phase of mitosis shown in the diagram?
Choose 1 answer:
Answers
Answer:
(Option A) Nuclear membranes begin to form around the cell’s genetic material.
Explanation:
In the given image, it can be predicted that the nuclear envelop reappears around the cell's genetic material. The correct option is A.
What is mitosis?Mitosis is the process whereby a cell replicates and then separates its chromosomes, creates two identical nuclei in prep work for cell division.
Mitosis is commonly accompanied by the equal division of the cell's contents into two daughter cells with identical genomes.
Mitosis occurs in the following stages:
The chromosomes shorten and thicken during prophase. Metaphase - Chromosomes align in the center of the cell. Chromatids separate at the centromere and move to opposite poles during anaphase. Telophase - The formation of two nuclei after nuclear envelopes reform around each chromosome group.The image is showing telophase of the cell division mitosis, which is indicating that the nuclear envelop is being formed around the genetic material of the cell.
Thus, the correct option is A.
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