essay on atoms molecules and matter

Answers

Answer 1

Answer:

Atoms are typically made up of three main parts: protons, neutrons and electrons. Think of the protons and neutrons as together forming a “sun”, or nucleus, at the center of the system. The electrons orbit this nucleus, like planets. If atoms are impossibly small, these subatomic particles are even more so.

Molecules are groups of atoms clumped together by chemical bonds. They are also distinguished from ions by their lack of electrical charge.

H20 is a molecule, N2 is a molecule even O3 is a molecule.

Matter is basically anything that takes up space and that has mass. All physical objects have matter. The original stated of matter are solid, Liquid, And gas.

Explanation:

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Related Questions

The dental assistant is taking the vital signs of a 62 year-old woman who has severe toothache, Her temperature using the digital thermometer is 101 F. Her blood pressure is 100mm Hg systolic over 70 mm Hg diastolic.Her pulse reading is 75 beats per minute. Which vital signs taken by the dental assistant are not within the normal range? What is the likely cause of the abnormal reading? What characteristic of a digital thermometer should the assistant keep in mind when using it ? How should the dental assistant respond to this information about the patients vital signs?​

Answers

The vital signs taken by the dental assistant that is not normal  in the temperature results of the patient.

The normal temperature range is from 97 F to 99 F in adults. Any value obtained which is above 100F is considered as abnormal.

    2. The likely cause of the abnormal reading is fever

The symptoms of the severe toothache includes the following:

fever (above 100F) and headachesever pains when pressure is applied to the tooth.swelling of gum surrounding the affected tooth.

   3. The characteristics the assistance needs to keep in mind while using the digital thermometer is the timing of the thermometer. Digital thermometer reading is taken after 40 seconds of insertion. this is not so with the normal mercury thermometer.

   4. The dental assistance needs to notify the dental doctor concerning the abnormal temperature of the old woman. this will help in further diagnosis to be carried out towards the treatment of the severe toothache.

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a- Los organismos quimio autótrofos realizan la fotosíntesis. ( )

b- Las sustancias nutritivas ingresan a la célula por el citoplasma. ( )

c- La nutrición es el conjunto de reacciones químicas que ocurren en el citoplasma
celular. ( )

d- La excreción es una etapa de la fotosíntesis. ( )

e- Todos los organismos realizan la función de nutrición. La respiración hace parte del
proceso de nutrición. ( )

f- Durante el proceso de nutrición hay eliminación de desechos tóxicos. ( )

Answers

Answer:

Konica Minolta

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ksh barkha singh

onichan baka bi

How is the Nucleus like a brain?

Answers

Answer:

The nucleus contains the DNA of the cell which can be thought of as the brain of the cell.

The nucleus responds to stimuli via receptors which can be primary or secondary. Basically, an external ligand (hormone, protein, nutrient, etc) binds to the surface receptor of a cell, this, in turn, causes the receptor to release a messenger (most of the time circular AMP (cAMP)) which binds to a secondary receptor which is either directly inside the nucleus or on the nuclear envelope. Finally. the portion of the DNA which is responsible for the protein to respond to the ligand is activated and begins transcription.

The activated DNA section (gene) produces mRNA which in turn produces a protein in response to the ligand.

On top of this, the entire cell cycle of rest, growth, and division is controlled by the nucleus.

Living things also display ? Which means they are arranged in an orderly way

Answers

Answer:

yes this is true. they should be placed in a neat and tidy order so it is easy to find them when needed

Explanation:

What is the rule for making a atom positive/+ion?​

Answers

Answer:

Ions are formed when the number of protons in an atom does not equal the number of electrons. If more protons are present, the ion is positive and is known as a cation; if more electrons are present, the ion is negative and referred to as an anion.

Explanation:

Match the following definitions to their correct terms.

1. any chemical compound that contains carbon
organic
2. a liquid that acts to dissolve or suspend substances
solute
3. a chemical compound that doesn't contain carbon
inorganic
4. a substance that is dissolved in a liquid
solvent

Answers

Explanation:

1.Organic compounds

2.the solvent

3.An inorganic compound

4.the solute

Many people are proponents of using nuclear power instead of burning coal to generate electricity what is an environmental disadvantage of using nuclear power

Answers

Answer:

sdakhBmkhjsbaK>HJB

Explanation:

sakjZBCK.jh

10. Name the type of tissues present in the following structures.
a. Hair follicles and nails

Answers

Answer:

Keratinocytes

Explanation:

Keratinocytes (ker-uh-TIH-no-sites) make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.

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Scientific laws can be thought of as general descriptions of what we see happening around us.

true or false?

Answers

Answer is TRUE

Scientific laws can be thought of as general descriptions of what we see happening around us.

What enzyme breaks down starch in your saliva?
pepsin
trypsin
lipase
amylase

Answers

Answer:

D

Explanation:

It is the amylase, or rather alpha-amylase

what were necessary for a person to be happy and healthy?
What could happen to a person to make him ill? What
could be done to cure him?

Answers

Answer:

A person needs to have a quality and stress-free life to be happy and healthy.

A person will be ill if he/she is physically and mentally ill.

A  person should be physically, mentally, and socially fit and fine to be cure.

Modern inventions and discoveries:
A.support Scripture and creation
B. support the idea of evolution
C. do not relate to Scripture
D. falsify Scripture

Answers

Answer:

B

Explanation:

Removing groundwater for drinking water will stop the water cycle.

True
False

Answers

The answer is false

False, removing groundwater for drinking water will not stop the water cycle.

Groundwater, in essence means water present and existing beneath the rock surface. They are stored in the tiny pores of the rock below the earth surface.

Groundwater are the sources of fresh water resources.

Rock are drilled with machine to get access to the groundwater.

Groundwater are naturally replenished through precipitation, from rivers, lakes and other water bodies.

In conclusion, Groundwater form part of the water cycle because after the use of water, its eventually evaporates to the cloud and discharges back into the ground through the rain, rivers, lakes etc.

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_________ feed on dead matter, causing it to decay while ________ feed on already decaying matter.
A. Decomposers, Consumers
B. Saprobes, Detritivores
C. Producers, Consumers
D. Detritivores, Consume

Answers

Answer:

Decomposers, Consumers

Explanation:

Answer:

B) Saprobes, Detritivores

Explanation:

Saprobes derive their nourishment from nonliving or decaying organic matter.

Detritivores feed on dead, organic material and play an important role in the breakdown of organic matter from decomposing animals and plants.

the foot is ___ to the nose

Answers

Answer:

below

Explanation:

what are the options?

Compared to developing nations, developed nations have
a. lower health standards
b.greater wealth.
c. faster-growing populations.
d. less social services.

Answers

Answer:

b greater wealth is the correct option.

How is biotechnology useful for society?

Answers

Answer:

Hope it will help you!

Explanation:

Like all technologies, biotechnology offers the potential of enormous benefit but also potential risks. Biotechnology could help address many global problems, such as climate change, an aging society, food security, energy security and infectious diseases, to name just a few.

Modern biotechnology enables us to combat debilitating and rare diseases, minimize our environmental impact, feed the needy, use less and cleaner energy, and create safer, cleaner, and more efficient industrial manufacturing processes.

Desarrollo de los Depósitos ricos en carbono?

Answers

Answer:

yes

Explanation:

with the help of a simple sketch ., describe a typical meristematic cell.

Answers

Answer:

Meristematic tissue has a number of defining features, including small cells, thin cell walls, large cell nuclei, absent or small vacuoles, and no intercellular spaces. The apical meristem (the growing tip) functions to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.

Explanation:

I'm not sure but hope it helps.

Which of the following would require an input of energy? Question 5 options: a)  diffusion b)  filtration c)  osmosis d)  vesicular transport​

Answers

Answer:

Which of the following would require an input of energy? Question 5 options: a)  diffusion b)  filtration c)  osmosis d)  vesicular transport

Explanation:

vesicular transport

Vesicular transport is the process that would require an input of energy.

Vesicle-mediated transport is the transport process that involves vesicles or vacuoles that form from or fuse with the cell membrane.

Transport vesicles interact indirectly with microtubules through proteins that have the ability to move and are known as dyneins and kinesins. These proteins transform the energy of ATP into movement in a certain direction.

The transport vesicles use microtubules to travel directly and quickly to their destination.

It can be done in two parts:

Exocytosis: when a vesicle reaches the cell surface, its membrane fuses with the cytoplasmic membrane and expels its contents to the outside.

Endocytosis: the material that will be incorporated into the cell induces an invagination of the membrane, producing a vesicle that encloses the substance.

Therefore, we can conclude that vesicular transport is the process that would require energy which is obtained from the transformation of ATP.

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Describe the structure and function of bone.

Answers

Answer:

Bone is a mineralized connective tissue that exhibits four types of cells: osteoblasts, bone lining cells, osteocytes, and osteoclasts [1, 2]. Bone exerts important functions in the body, such as locomotion, support and protection of soft tissues, calcium and phosphate storage, and harboring of bone marrow

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What is cell ? What are the functions of cell ?​

Answers

Answer:

in biology, the smallest unit that can live on its own. and that makes up all living organisms and tissues of the body . a cell has three main parts ; the cell membranes , the nucleus, and the cytoplasm.

Explanation:

functions of cell are :

they provide structure for the body, take in nutrients from food, convert those nutrients into energy and carry out specialized functions. cells also contain the body's heredtary matera amd can make copies of themselves. cell have many parts each with different function.

A cross between two heterozygous organisms results in a phenotypic ratio of:
1:1:1:1
4:0
1:3
1:2:1

Answers

Answer:

3

Explanation:

the answer is 1:3 ‎‎‎‎‎

liguid which do notwet the glass surface from a cinvex meniscus true or false ​

Answers

Answer:

True

Explanation:

Mercury does not wet glass - the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass.

plsss helpppppppppppppppppp

Answers

Answer:

100cm^3

Explanation:

ml=cm^3 so 100 cm^3

Cells that move around as the formless Protista amoebas do are called what?

Answers

Answer:

protists

Explanation:

Protists are the cells that move around

Which of the following statements about eukaryotic RNA is true?
O -A small cap of extra nucleotides is added to both ends of the RNA.
O -The modified RNA molecule is transported into the nucleus.

-Exons are spliced together.

-Introns are not transcribed from DNA to RNA.

Answers

Answer:

A small cap of extra nucleotides is added to both ends of the RNA

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The statement 'exons are spliced together' is TRUE. The exons are the coding regions of genes.

RNA splicing is a eukaryotic mechanism by which non-coding sequences of genes called 'introns' are removed from the precursor messenger RNA (pre-mRNA), whereas protein-coding sequences called 'exons' are spliced together.

These gene coding sequences (exons) are spliced together by a macromolecular complex known as the spliceosome.

In consequence, a pre-mRNA is converted into a mature mRNA, which is subsequently used for protein synthesis.

In conclusion, the statement 'exons are spliced together' is TRUE.

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models can represent things that are too far away or to small to see

true or false?

Answers

true! hope this helps :)

Answer:

True

Explanation:

Each molecule of ammonia (NH3) is made up of one nitrogen atom and three hydrogen atoms. Which term best describes ammonia?

A. heterogeneous mixture

B. element

C. homogeneous mixture

D. compound

Answers

Answer:

D.compound

Explanation:

Ammonia is a compound

Each molecule of ammonia (NH3) is made up of one nitrogen atom and three hydrogen atoms. the term best describes ammonia is- option D. compound

Ammonia is an inorganic compound made up of a single nitrogen atom covalently bonded to three hydrogen atoms.

Ammonia gas can be dissolved in water and is called aqueous ammonia.household liquid ammonia is a hmogenous mixture but not natural ammonia gas, it is an inorganic compound.there is a covalent bond present between hydrogen and nitrogen atoms.

Thus, the correct answer is - D. compound

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Describe briefly two level of cell organization in living arganism giving an example of each type

Answers

Answer:

cell,tissue,organ system

Explanation:

a cell is the smallest and functional unit of a loving organism which can carry out all life process.a cell may be unicellular multicellular

tissue: is a group of similar cell which perform the same function e.g sclerenchyma and parenchyma in plants

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