why erector muscles contract in regularing body temperature at cold temperature ?
Answers
Answer:
Erector muscles contract in regularing body temperature at cold temperature because causing body hairs to stand on end.
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When a sodium atom loses an electron to a chlorine atom and a molecule of sodium chloride is formed this is an example of the formation of what type of compound?
It's called a _______________ compound.
Answers
Answer:
Ionic compound
Explanation:
This is because Na which is a positive ion transfers an electron to CL which is a negatively charged atom to form a compound
Last electron level that has an electron in it.
Group of answer choices
Valence Level (Shell or Cloud)
Atom
Electrons
Atomic Symbol
Answers
Answer:
Option 1
Explanation:
Valence shell/level/cloud is the last shell that has any electron(s) in it. It is usually called the outermost shell.
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Hope this helped!
~AH1807Peace!How should you test a hypothesis
Answers
I hope this helps :)
explain how enzymes catalyst chemical reactions.
Answers
Answer:
Enzymes lower the activation energy of a reaction so it can happen more quickly.
Explanation:
I have a few biology questions!
2. What statement about crossing-over is true?
a. The genetic variability of the off spring is reduced.
b. It occurs during meiosis.
c. Genes located far apart on a chromosome are less likely to be separated.
d. It occurs between chromosomes that are NOT homologous.
4. The lac genes are turned off when
a. lactose is present.
b. RNA polymerase binds to the promoter.
c. the repressor binds to the operator.
d. RNA polymerase binds to the repressor.
10. Which of the following is NOT a factor that affects photosynthesis?
a. temperature
b. water availability
c. light intensity
d. heterotroph availability
12. In the Krebs cycle, pyruvic acid is
a. generated so that glycolysis can continue.
b. broken down into carbon dioxide.
c. used to convert ATP into ADP.
d. broken down into glucose.
Answers
Answer:
2)a
4)a
10)d
12)b
PLEASE HELP ASAP ILL GIVE YOU BRAINLEST
explain what density is. How is it different from weight and mass?
Answers
Hey there! I'm happy to help!
Density is how much mass there is per amount of space. The formula for it is mass divided by the volume. How much mass is there per (per means divide) amount of space?
Think of it like a room in a house. If the room only has one person, it isn't going to be very dense with people because there is only one person in the entire room. If there were 100 people, it would be very crowded in that room and the whole room would weigh a lot more. If we make our room the size of a huge convention hall though, 100 people wouldn't make it very crowded,. and it would be less dense. So the amount of people (mass) and the size of the room (volume) affect density.
In that sense, density is kind of like how crowded a thing is.
A hollow watermelon has less density than one that isn't because a watermelon that isn't hollow has more substance inside of it (more mass).
Mass is a factor of density because it measures how much of something there is. It can be related to the people in the room.
Weight is mass but with gravitational influence. A watermelon in space is going to weigh less than a watermelon on Earth because in space there is no gravity and it is floating around, but it will still have the same density just like our room full of people would still be crowded even if the people weighed nothing and were floating around.
On Earth though, we measure mass with terms like pounds, kilograms, etc. We use the term mass over weight because it is more scientifically accurate when calculating density.
Have a wonderful day and keep on learning! :D
Isabel is researching the effects of deforestation using online sources. She finds an environmental study on the relationship between deforestation and local weather.
Which of the following characteristics should this study have in order for its results to be considered valid?
1. Empirical observations
11. Evidence that can be replicated
III. Outcomes that don't change with new experimentation
OI and 11
O II and III
O I and III
O I only
Answers
Answer:
ll and lll
Explanation:
I did the math
The characteristics that the study have in order for its results to be considered valid are:
Empirical observationsOutcomes that don't change with new experimentation.Since Isabel is carrying out research and found an environmental study on the relationship between deforestation and local weather, it's important that the material should be valid in order to be accepted.
Therefore, to be valid, it should have the feature of an empirical observations and the outcomes should not change with new experimentation.
Empirical observations simply means the observations that are derived from experiments or based on experience.
In conclusion, the correct option is C.
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The study and manipulation of DNA on a molecular level is known as
A biochemistry.
B genomes.
C molecular genetics.
D evolution.
Answers
Answer:
It is known as molecular genetics
Answer:
C. The study and manipulation of DNA on a molecular level is known as molecular genetics..
Why do minerals that have the nonsilicate crystalline structure called closest packing have high density?
Answers
Answer:
The native elements of a nonsilicate crystal have very high densities because their crystal structures are based on the packing of atoms as close together as possible.
Is the cell wall found in eukaryotic(plant-animal) or prokaryotic?
Answers
Answer: Prokaryotic
Explanation:
Which age structure is most likely for a population that has not completed the demographic transition?
a. 50 percent of people below age 15
b. 15 percent of people below age 15
c. 5 percent of people aged 10–14
d. 10 percent of people aged 50–54
Answers
what is the method of transport used by single celled animals and small, thin aquatic animal
Answers
Answer:
Most animals and plants consist of different types of cells organised as tissues, organs and systems. The human respiratory system is a body system adapted for efficient gas exchange.
hope it helps mark me as brainliest please
Explanation:
10. Which of these statements is correct about the circulatory system?
It transports hormones
Capillaries have thicker walls than veins Systemic circulation carries blood to and from the lungs
All are true
Answers
Answer:
all are true mark brainleast plz pleasepls answer this guys
Answers
Answer:
D.None of the Above
Explanation:
Hope it helps you
apakah satu-satunya bahan yang wujud secara semula jadi dalam ketiga-tiga keadaan jirim?
Answers
Answer:
air
Explanation:
air boleh wujud dalam keadaan gas iaitu wap air, keadaan cecair iaitu air dan pepejal iaitu ais
pllllllllllllllzzzzzzzzzzzzzzzzz help
Answers
Answer:
independent variable
Explanation:
control is what stays the same and dependent is the results from the changes made not sure if im 100% correct
12. Cows digest proteins into smaller molecules called peptides through the use of an enzyme called pepsin.
Aqueous solutions taken from the contents of a cow's stomach are found to have many more hydrogen ions
(H+) than hydroxide ions (OH-). A veterinarian is attempting to conduct an experiment that mimics protein
digestion and has the following four test tubes set up. Which would you expect to have the greatest
concentration of peptides?
(A) Test tube 1: protein and pepsin in water at pH 1.4
(B) Test tube 2: protein and pepsin in water at pH 8.2
(C) Test tube 3: protein in water at pH 7.6
(D) Test tube 4: pepsin in water at pH 1.7
Answers
(02.01 LC)
Which of the following is a risk for someone who chooses to abuse drugs?
O Increased risk of an accident while driving under the influence
Decreased risk of developing lung disease and some kinds of cancer
O Reduced chance of developing mental health disorders
O Reduced possibility of contracting sexually transmitted diseases
Question 20 Multiple Choice Worth 5 points)
(02.01 LC)
Answers
A person who chooses to take drugs has an increased risk of accidents from driving, hence option A is correct.
What is drug abuse?Overuse of alcohol, painkillers, or illicit narcotics. It could cause injury to one's body, relationships, or emotions. Drug addiction is a sickness that drives people to consume substances compulsively in spite of negative effects.
Abuse of drugs can lead to seizures, strokes, brain damage, lung illness, issues with memory, concentration, and decision-making, as well as rises in body temperature.
Additional signs and symptoms include a rapid pulse, dilated pupils, raised blood pressure, nausea or vomiting, and dilated pupils, in additional behavioral changes including agitation and poor judgment.
Therefore, increased risk of an accident while driving under the influence, hence option A is correct.
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Exosperm is the food storage tissue in an anthophyte seed that supports development of the growing embryo.
Please select the best answer from the choices provided
OT
OF
Answers
Answer:
the answer of this questions is ot
Explanation:
the answer is anove
How many body sections do insects have?
a.
one
b.
two
c.
three
d.
four
Answers
Explanation:
Option C answer is 3 three
Answer:
insects have three body sections
sound travels to your eardrum by way of the------?
Answers
Answer:
el conducto auditivo
Explanation:
Answer:
External auditory canal
Which of the following statements about the causes of mental illness is NOT true?
O It is not caused by poverty.
O It is not the result of personal weakness or deficits in personality.
O Experiences a person has as a child play no role in causing mental disorders.
It is not the consequence of poor parenting or bad behavior.
Answers
Answer:
experiences a person has as a child play no role in causing mental disorders.
Explanation:
because one person have to act as his/her age level.
The statement that is NOT true experiences a person has as a child play no role in causing mental disorders, the correct option is (c).
Childhood experiences can significantly influence mental health outcomes. Adverse experiences like abuse, neglect, trauma, or dysfunctional family environments can have long-lasting effects on an individual's psychological well-being. Research shows that these negative experiences can increase the risk of developing mental disorders later in life, such as anxiety, depression, and post-traumatic stress disorder.
Early intervention and support are crucial in addressing the impact of childhood experiences on mental health. Understanding and addressing these underlying factors can help individuals cope with their conditions and work towards recovery. Recognizing the role of childhood experiences in mental illness highlights the importance of a holistic approach to mental health care, emphasizing prevention and early intervention, the correct option is (c).
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The complete question is:
Which of the following statements about the causes of mental illness is NOT true?
a. It is not caused by poverty.
b. It is not the result of personal weakness or deficits in personality.
c. Experiences a person has as a child play no role in causing mental disorders.
d. It is not the consequence of poor parenting or bad behavior.
Sustancia formada por dos átomos de hidrógeno en la asados por uno de oxígeno
Answers
Answer:
El agua es una molécula simple, se produce cuando un par de átomos de hidrógeno y uno de oxígeno quedan atrapados juntos.
What is the basic unit of structure and function of all living organisms?
O mitochondrion
ODNA
nucleus
cell
Answers
Answer:
Cell
Explanation:
The cell is the basic unit of allllllll life on Earth. It is also the smallest thing that can still be considered 'living'. All the other choices (mitochondrion, DNA, and nuclelus) are parts of a cell, but can't be living structures on their own.
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What is the benefit to doing epidemiological studies?
A.) Patients do not have to unwillingly be exposed to harmful substances
B.) Patients are never exposed to harmful substances
Answers
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbb
do fertilizer also increase the number of bacteria as they do for plants, or do they increase when the decomposition of plants occur?
Answers
Answer:
my views
Explanation:
bacteria helps in the decomposition of wastes ,and after the decomposition of waste material by bacteria it leads to the creation of nitrogen's oxides and this nitrogen's oxides works as fertilizer which leads to the good crops and we don't need of any chemicals' made fertilizer
Answer:
Farmers can add nitrogen fertilizer to produce better crops, but too much can hurt plants and animals, and pollute our aquatic systems.
Explanation:
which part of a flower has pollen grain?
Answers
Cell theory applies to...
A. only cells that have cell walls.
B. all cells.
C. only to prokaryotic cells.
Answers
Answer:
a only cells that have cell walls
Explanation:
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the wight of a child taken over the first 18 years of their life by a type of
Answers
Answer:
what subject is this and do we need an equation for it
Explanation:
can someone plz help me
Answers
Answer:
ITS A
Explanation: BC I IS