Among externalizing disorders, the biological factors that appear to play the greatest role in etiology are most commonly associated with Attention-Deficit/Hyperactivity Disorder (ADHD).
ADHD is a neurodevelopmental disorder characterized by persistent patterns of inattention, impulsivity, and hyperactivity that often manifest during childhood and can continue into adulthood.
Research suggests that genetics and neurobiology play significant roles in the development of ADHD. Twin studies have shown a higher concordance rate for ADHD in identical twins compared to fraternal twins, indicating a genetic influence.
Neurobiological studies have implicated abnormalities in brain structure and function in individuals with ADHD. Structural imaging studies have revealed differences in the prefrontal cortex, basal ganglia, and cerebellum, which are regions involved in attention, impulse control, and motor coordination. Functional imaging studies have also demonstrated atypical patterns of brain activity and connectivity in individuals with ADHD.
While biological factors are significant in the etiology of ADHD, it is important to note that other factors, including environmental and psychosocial influences, also contribute to the development and manifestation of the disorder. The interplay between genetic, neurobiological, and environmental factors is complex and multifaceted in understanding the etiology of externalizing disorders such as ADHD.
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What sentence best supports the statement that hormones are involved in the regulation of homeostasis?
A.
The hormone cortisol suppresses the immune system and is produced when the body is under stress.
B.
The hormone oxytocin promotes labor contractions of the uterus during childbirth.
C.
The hormone melatonin induces sleep and its production is slowed by exposure to light.
D.
The hormone erythropoeitin increases the production of red blood cells when oxygen levels are low.
Answer:
D
Explanation:
It is an homeostatic process
Material rising from the mantle reaches the surface at spreading centers.
A. True
B. False
Yes, It's true!
Explanation:
Material rising from the mantle reaches the surface at spreading centers.
A. True
B. False
A mRNA codon is AGC. The tRNA anticodon will be
Mitosis is done by your body cells. What types of cells do not undergo mitosis
Answer:
Sex cells/ gametes
Explanation:
Phineas and Ferb build a flying machine. They accelerate into the air in a
straight line, going from 0 m/s to 30 m/s in 3 s. Find their average
acceleration.
10
30 dived by 3 = 10
hope it helps
If you wanted to find an ant's stomach, where would
you look?
a. Inside its head
b. Inside its cephalothorax
c. Inside its thorax
d. Inside its abdomen
Answer:
d. Inside its abdomen
Explanation:
Hope this helps!
What is the structure of a virus?
Answer:
The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
A virion consists of a nucleic acid core, an outer protein coating or capsid, and sometimes an outer envelope made of protein and phospholipid membranes derived from the host cell. The capsid is made up of protein subunits called capsomeres. Viruses may also contain additional proteins, such as enzymes
Which of these contributes the most oxygen to our planet?
a. Photosynthetic fungi
b. The Amazon Rain forest
c. the National Forests
d. Phytoplankton
Answer:
D. Phytoplankton
Explanation:
The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize.
Have a wonderful day! <3
Answer:
D
Explanation:
this is because the ocean produces the most oxygen and most of that comes from plankton in the ocean
Without genetic variation, natural selection would not be possible. Explain why.
Answer:
Without genetic variation, natural selection is only able to grow the number of allelomorphs that previously exited in the population. Natural selection occurs through an interaction between the environment and the variability of the individual organisms making up a population. If every giraffe had the same neck length, there would be nothing to change and they would never have a long neck by now.
What happens during S phase?
Answer:
DNA is replicated
how are viroids different from viruses
Answer:
We are all familiar with the basics of viruses: These particles infect living cells and wreak havoc throughout the body. But viruses aren’t the only villains around causing chaos in living things. Other infectious agents called viroids and prions — which are also tiny but powerful — can take down both plant life and entire animals.
Viroids are free RNA molecules of low molecular weight without any protein coat, while viruses can have either RNA or DNA molecules encapsulated in a protein coat. Viroids are smaller in size than viruses.
Viroids not made of cells.
Viroids don’t transform energy.
Viroids can’t reproduce on their own.
When do populations increase?
Answer:
c
Explanation:
i have seen this before and i got it correct i dont know if it works with you?
Help!! Please!! I'll name you brainliest!!
Explanation:
the same as the charge on the ion.+1 +2-25. -1
plz mark my answer as brainlist plzzzz you get it helpful ☺️.
Hope this will be helpful to you.
A student knows the width and
length of a dresser. What else
should she measure so she can
calculate the volume?
A. Mass
B. Density
C. Height
Answer:
C. Height
Explanation:
The volume of a rectangle is Length x width x height.
The student has only measured the width and length so far, the only thing left to measure is the height.
The other answers don't make sense.
Hope this helps!!
- Kay :)
Answer:
c
Explanation:
Yall Im struggling, if u cant read it, the question is “why does a mountain climber need an oxygen supply at very high altitudes, even tho the air still contains 21% oxygen?
Answer: Because it is harder to draw breath in. And the cold
Explanation: At higher altitudes, it becomes more dangerous, and you can develop altitude-related illnesses such as HAPE and HACE. I read a book called Into Thin Air, and in the book the author goes into detail on the details/complications of climbing Mt.Everest and oxygen needs. Mountain climbers use canisters of oxygen called Supplemental Oxygen.
Plant life in wetlands is not
different from plant life In other areas.
True
False
Anyone know what is the answer pls ?
Answer:
1. Viruses 2. ? 3. Viruses 4. ? 5. Immunity 6. Vaccine
Explanation:
The EPA sets national air-quality standards for common air pollutants. The
data table shows the change in concentrations of these pollutants over time.
Emissions Reductions and Air Quality
Data period
Reduction
Pollutant
Improvement
(from/to)
in emissions (%) in air quality (%)
СО
69
85
Pb
99
98
1980 - 2014 NO,
55
60
0,
53
33
81
80
16
30
2000 - 2014
33
36
SO2
PM,
PM25
Which conclusion do the data support?
The data support the conclusion that reducing emissions leads to improvement in air quality for the common air pollutants monitored by the EPA.
What is EPA?The Environmental Protection Agency (EPA) is a federal agency of the United States government that was established in 1970 to protect human health and the environment. The EPA's mission is to ensure that all Americans have clean air to breathe, clean water to drink, and safe land to live and work on. The agency is responsible for setting and enforcing national standards for air and water quality, as well as for managing toxic waste and other pollutants.
The EPA also works with other federal agencies, states, tribes, and local governments to address environmental challenges, such as climate change, ozone depletion, and exposure to hazardous substances. The EPA uses a range of tools and programs, including research and development, regulation, partnerships, and education and outreach, to achieve its mission. The agency also provides information and technical assistance to help individuals, communities, and businesses protect the environment and public health.
Learn more about EPA, here:
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Answer:
B . With monitoring, the concentration of every pollutant has decreased
Explanation:
The vocal cords stretch across the opening of the larynx. True or false??
Answer:
True
Explanation:
Vocal cords are bands of smooth muscle tissue located in the larynx. When air passes through, the vocal cords vibrate.
What change caused the rate of population growth to increase around point C?
Answer:
point c
Explanation:
Match each description with the correct ecosystem.
This ecosystem experiences sudden changes in water level and temperature.
This ecosystem contains a mix of fresh water and salt water.
This ecosystem supports many plants, which provide food for schools of fish.
Answer:
1 - B or intertidal zone
2 - A or estuary
3 - C or neritic zone
Explanation:
These are the correct answers, I took the test on edge, have a great day!!
Answer: B, A, C,
Explanation:
I did it and got it right
match the choices with each box.
Answer:
1 is totipotent
2 is mutipotent
3 is pluripotent
4 is totipotent
5 is pluripotent
6 is mutipotent
Explanation:
I honestly dont know sorry if they r wrong
seasons work help needed please
Answer:
July
Explanation:
it is typically the warmest month of the year globally because the Northern hemisphere has more land masses than the southern hemisphere
A student tested food samples for the presence of various nutrients and recorded her findings in
the data table below. A"+" denotes that the nutrient was present in the sample. Adenotes that
the nutrient was absent. Use the student's data to answer the next 3 questions.
Nutrient
Glucose
Starch
Protein
Lipid
Sample 1
Sample 2
Sample 3
Sample 4
Based on the student's data, which food sample(s) would contain amino acids?
O sample 3
O Samples 1 and 4
O sample 2
O samples 2 and 3
Answer:
4mhky4stjs reste w test
Explanation:
hjentekrwjetbwtfhwtjt3j3tj
What thing controls the functions of the different cells ? (Hint it is inside the nucleus)
Answer:
DNA
Explanation:
It's the genetic material that writes up who we are.
But if it's discussing an organelle, then it's the nucleus.
Have a great day!
PLEASE HELP QUICKLY
Match each of the following to the correct organ system.
Lungs
Heart
Veins
Arteries
Stomach
Large intestine
Trachea
Small intestine
Muscles
Bones
Liver
Pancreas
Gall bladder
Kidney
Bladder
Choices are...
A. Skeletal System
B. Excretory System
C. Digestive System
D. Circulatory System
E. Muscular System
F. Respiratory System
Explanation:
1. stomach - Digestive
2. Brain - Nervous
3. Heart - Cardiovascular
4. kidneys - excretory
5. bone marrow - lymph
6. pituitary gland - endocrine
7. xylem- vascular tissue
8. bones - skeletal
9. Fallopian tubes - reproductive
hope this helps liine some up together i dont give whole answers just try to help ppl out, ill see what i can do thogh, dont quite undderstand can thee be more than one to go with the numbered ones?
PLS HELP IM TIMED!!
Fish eggs that are fertilized externally are typically clustered and covered in a thick, jelly-like substance.
What is most likely the function of this substance?
a) to protect the eggs and keep them consistently warm inside the parent's body
b) to protect the eggs and keep them safe from any harmful environmental conditions
c) to ensure that only a few of the eggs are fertilized by sperm since external fertilization is uncommon and risky
d) to ensure that only some of the eggs are fertilized by sperm so others can be fertilized internally
Answer:
Don't get me wrong but I think it's B
Explanation:
Answer:
The correct answer is B: to protect the eggs and keep them consistently warm inside the parent's body. It is correct on edge
Explanation:
Hope this helps and good luck:)
True or False.
A group of the same species of living things in an area is a population
Answer:
True.
Explanation:
A population is a group of organisms of the same species that live in the same area at the same time
Answer:
True!
Hope this helps.
1. What were the conditions on the planet when life began?
Answer: The early Earth had no ozone layer and was probably very hot. The early Earth also had no free oxygen. Without an oxygen atmosphere very few things could live on Earth. Anaerobic bacteria were probably the first living things on Earth.
HELP ASAP WILL GIVE BRAINLISET Which of the following describes the Cell Theory?
Group of answer choices
(A)All
(B)All living things are composed of one or more cells.
©Cells are the basic unit of life
(D)Cells are produced from existing cells
Answer:
C. Cells are the basic units of life.
Explanation: