Everything on earth is made up of a fundamental particles that is impossible to see with the naked eye this particle is called the atom. There a over a 100 atoms or more in science. At the center of the atom is the nucleus which contains protons and neutrons. Electrons can be found moving around the orbitals or energy levels , while most of the area outside the nucleus is empty space .
Most of the mass of an atom is concentrated at the center of the nucleus.
Atoms are made up of three subatomic particles called
1. Protons
2. Neurons
3. Electrons
protons - has positively charge particles with a charge
of +1
Neutrons- has no charge it is neutral, 0 charge.
Electrons- has a negative charge particles with an charge of -1.
Relative mass of a particle is the mass compared to the mass of a proton
Relative charge of a particle is the charge compared to the charge on a proton.
Atom is a basic unit of matter have proton and neutron containing nucleus at the center and surrounding electrons.
What do you mean by atom ?
Atoms are the smallest and basic units of matter.
A negatively charged electron which surround the nucleus of the atom moving around the orbitals or energy levels.
The nucleus does not change during chemical reactions, only in nuclear reactions it will change.
In nucleus equal number of protons and neutrons, atomic number is the number of protons and atomic mass is made of the sum of protons and neutrons.
Relative mass of a matter is the mass of a proton while Relative charge of a matter is the charge on a proton.
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Look up at the night sky and just wonder. Then tell me what you wondered about.
I wonder what sort of stuff happens up there that nobody is aware of. All the different kinds of possibilities. And if there is life, then what would they be doing and how are their ways of life?
Describe ways in which a healthy artery differs from an artery affected by coronary heart disease
Name two social changes which take place during adolescence.
Social changes in adolescence
Young people are busy working out who they are and where they fit in the world. You might notice your child trying out new things like clothing styles, music, art or friendship groups. Friends, family, media, culture and more shape your child's choices in these years.
Social changes in adolescence. Young people are busy working out who they are and where they fit in the world.
What is Adolescence?Adolescence, which lasts from ages 13 to 19, is the period between childhood and adulthood.
Adolescence's physical and psychological changes frequently begin earlier, between the ages of 9 and 12, during the preteen or "tween" years.
Teenage years can be a time of confusion and discovery. As adolescents develop their sense of self, they may have to make challenging decisions regarding their academics, friendships, sexuality, gender identity, use of drugs and alcohol, and independence.
Therefore, Social changes in adolescence. Young people are busy working out who they are and where they fit in the world.
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If the percent concentration is equal both inside and outside a cell, water does not move into or out of the cell?
What would you need to know to determine the total amount of photosynthesis going on in the canopy and near the forest floor? Why?
Answer:
you would need alot of water and soil
Explanation:
When blood glucose levels are high and the glucose is not utilized for cellular respiration, the human body will store this glucose in the liver and muscles. In what form is this glucose stored?
A) glycogen
B) maltose
C) starch
D) sucrose
When blood glucose levels are high and the glucose is not utilized for cellular respiration, the human body will store this glucose in the liver and muscles. In what form is this glucose stored?
A) glycogen
B) maltose
C) starch
D) sucrose
Answer:
a and d ok
Explanation:
hello
What conditions were necessary for the first matter to form in the Universe?
Explain why
Answer:
hydrogen and helium couldn't form until the universe had cooled enough to allow their nuclei to capture electrons, about 380,000 years after the Big Bang. Within about 3 minutes after the Big Bang, conditions cooled enough for these protons and neutrons to form hydrogen nuclei.
Explanation:
how do ivasive species impact the carrying capacity of ecosystems?
Helpp ASAP !!!!!
Answer:
Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
How is DNA expression regulated in individual cells?
Answer:
Gene regulation can occur at any point during gene expression, but most commonly occurs at the level of transcription (when the information in a gene's DNA is transferred to mRNA). Signals from the environment or from other cells activate proteins called transcription factors.
Explanation:
Gene regulation can take place at any stage of gene expression, although it often happens during transcription when the data from a gene's DNA is converted to mRNA.
What is gene regulation?Proteins known as transcription factors are activated by signals from the environment or from other cells.
Limiting the amount of mRNA that is generated from a certain gene regulates transcription.
Eukaryotic gene expression is regulated by the nucleus-based mechanisms of transcription and RNA processing and the cytoplasm-based activities of protein translation.
Therefore, the translation of mRNA into proteins is regulated by post-transcriptional processes, which constitute the second level of regulation.
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How are decomposers important to the health of an ecosystem?
A. Decomposers recycle nutrients.
B. Decomposers convert solar energy to chemical energy.
C. Decomposers provide the foundation for the food web.
D. Decomposers are parasites.
Answer:
Decomposes recycle nutrients
Explanation:
Ape-x
i will mark as Brainliest if answered
Answer:
5.e glycerol and fatty acids
6.a C:H:O
For each picture shown, choose the level of organization depicted.
Answer:
1. cell
2. organ system
3. tissue
4. organ
Explanation:
I had the same question and got these answers and they were registered as correct
Hopefully this helps you
pls mark brainlest
1. cell
2. organ system
3. tissue
4. organ
What is cell?"A cell is defined as the smallest, basic unit of life that is responsible for all of life's processes.” Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life
What defines an organ system?An organ system is defined as a group of organs that work together to perform bodily functions. For example, the organs in the gastrointestinal (GI) system each play a unique, important role in food digestion.
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(b) Describe how a student could test cow's milk to show whether it contains protein
different types of carbohydrate.
To show that cow milk contains protein and different types of carbohydrate,food tests should be carried out by the student.
Carbohydrates (sugars) are the main sources of food through which the body derives energy from.
The various types of carbohydrate are the simple sugars, complex sugars and starch.
Proteins are the main body-building substances which are necessary for the maintenance of health.
The cow milk contains proteins and a type of carbohydrate called lactose which is an example of complex sugar.
To test for protein in milk, xanthoproteic reaction test should be carried out by the student. The procedure includes:
To the milk solution add a few drops of concentrated nitric acidA white precipitate forms, which turns yellow on heating.Cool the contents and add a few drops of ammonia solution.The colour of the precipitate deepens to yellow indicating presence of protein in the cow milk.To test for carbohydrate in milk, a test for complex sugar should be carried out by the student. The procedure includes:
Add milk solution and hydrochloric acid into a test tube. Place the test tube inside a boiling water-bath.The acid hydrolyses the complex sugar to simple sugars.Fehling's test is then carried out on the simple sugars that are formed which are glucose and galactose.An orange-red precipitate indicates a positive result.Learn more here:
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Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of the decomposition are hydrogen (H2) and oxygen (O2).
Which of these changes to the cell would cause the greatest reduction in the activity of catalase?
A)
a decrease in the concentration of hydrogen and oxygen
B)
an increase in the concentration of hydrogen peroxide
C)
an increase or decrease in pH beyond normal range
D)
a return of pH to the normal range
Answer:
B an increase in the concentration of hydrogen peroxide.
Explanation:
Write the classification of bamboo as per hierarchy and it’s characteristics
Explanation:
kingdom - plantae
Divison - Magnoliophyta
Class - Liliopsida
Order - Poales
Family - poaceae
Genus - Chusquea
Species - C. antioquensis
They have fibrious root system.
What element is always present in a nucleic acid but is never present in a carbohydrate or amino acid
Carbon Sulfur
Proteins Always Sometimes
Carbohydrates Always Never
Nucleic Acids Always Never
Lipids Always Never
How do consumers use the sun to get their energy?
What are the functions of sugars
Answer:
the provide the energy u need
Explanation:
Which best describes the relationship between temperature and dissolved oxygen in a lake?
As temperature increases, dissolved oxygen increases.
As temperature increases, dissolved oxygen decreases.
As temperature decreases, dissolved oxygen decreases.
A change in temperature has no
effect on dissolved oxygen.
Explanation:
Air and Water Temperature Increases
For example, increases in water temperatures are expected to result in the following: Lower levels of dissolved oxygen due to the inverse relationship that exists between dissolved oxygen and temperature. As the temperature of the water increases, dissolved oxygen levels decrease.
Early scientists believed the earth was around 6,000 years old. What do scientists
currently believe?
Answer:
they now also believe that earth is 6000 years old
Explanation:
5(x + 6) - 2x = 3(x + 10)
Answer:
5(x + 6) - 2x = 3(x + 10)
or 5x + 30 -2x = 3x + 30
0r 0=0
Explanation:
Answer:
x=0
Explanation:
5x+30-2x=3x+30
combine like terms subtract 3x from both sides and 30 from both sides
5x-2x-3x=30-30
-6x=0
divide both sides by -6
x=0
Which best defines homeostasis? modifying the external environment maintaining a stable internal environment controlling what enters and exits the cell movement of materials into the cell
Answer:
B. maintaining a stable internal environment
Explanation:
Took the test :)
Answer: yes its B
Explanation:
Fox is related to cunning, as leaf is related to
1. Calcium
2. hub
3. sap
4. crump
When writing a hypothesis in this class, an if... and... then... statement is
used. What is written after the if?
Controlled Variable
Independent Variable
Dependent Variable
Constant
What is endocytosis?
a. Osmosis
b. Particles in the nucleus
c. The cell taking in molecules
d. DNA
Answer:
c. The cell taking in molecules
Explanation:
Which equation has water as a reactant in chemical reaction?
Answer:
Na + H2O NaOH + H2 is the ans
Photosynthesis is the main source of energy for these
eukaryotes. This multicellular organism has cell walls
around all of its cells. .
and cell membranes around all lf its cells
What is homeostasis? What is an example of homeostasis?
Answer: the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
Explanation: one of the most familiar examples of homeostasis Body temperature control in humans
plz mark brianliest
Answer:
Homeostasis is the ability of the body to maintain a stable internal environment despite changes in external conditions
I am terribly sorry that this is only the definition of homeostatis... I can't think about much science right now, it is very late where I am at the moment. Good night, and have a great scientific life.
What is cleisthenes in 2000 BCE - Ancient Greece
Answer:
Cleisthenes Greek was an ancient Athenian lawgiver credited with reforming the constitution of ancient Athens and setting it on a democratic footing in 508 BC.
Explanation:i dont have one
8
During cellular respiration, the bonds of food molecules are broken, so energy can be released to fuel other cellular processes. In
order for this to occur, which of the following statements must be true?
tho honds of the fond molecules.
Answer:
B.) New compounds with lower-energy bonds must be formed when the high-energy bonds in food molecules are broken.
Explanation:
I hope it helped