What two things can never change for atoms of a certain element? (make sure you select both!)
A. atomic number
B. number of protons
C. number of neutrons
D. number of electrons

Answers

Answer 1

Answer:

A. Atomic number

B. Number of protons

Explanation:

Protons and electrons are what defines elements. If the number of protons or electrons was changed, you would have a completely different element.

The atomic number of an atom is the number of protons within its nucleus. Again, if you changed the atomic number, you would no longer have the same element.

Neutrons can be added or taken away from an element while keeping that elements properties. Atoms of the same element that differ in neutrons are called isotopes. Isotopes also differ in atomic mass from other atoms of that element, as the atomic mass of an atom is the amount of neutrons AND protons in its nucleus.

Electrons can also change in an atom. Atoms will lose and gain electrons when in contact with other atoms. An atom that loses an atom will have a positive charge (more protons than electrons), while atoms that gain an atom will have a negative charge (more electrons than protons). These are called positive and negative ions. You will likely learn about these later.

Important Vocabulary:

Atomic number: the number of protons an atom hasAtomic mass: the number of protons and neutrons an atom has (this defines the mass of the atom)Isotopes: atoms of the same element with different amounts of neutrons (these will also differ in atomic mass, see atomic mass definition)

Related Questions

Parents and their offspring are usually very similar, but always slightly different. For example, certain moths can have offspring with either dark or light wings. Almost everything else about the moths is nearly identical, but the wing color and pattern may look very different. If the moths live in a forest with trees that have very dark bark, which newborn moth would have a survival advantage, the light winged moth or the dark winged moth? A) The dark winged moth, because its color will help it fly away from predators. B) The light winged moth, because its color will help it fly away from predators. C) The dark winged moth, because its color will help it blend with the environment. D) The light winged moth, because its color will help it blend with the environment.

Answers

Answer:

The answer is A.

Explanation:

Moth with dark wings under the tree with dark bark have a higher chance of surviving as its wings protect them from predator due to similar colour features.

Answer:The answer is C.

Explanation:If the bark is dark, then a dark winged moth will blend.

1. Each person's DNA contains certain genes that code for specific traits. List at least 15 traits that make up your body's appearance. Your traits are things like eye color, arm length, or foot size

Answers

Freckles, hair color, complexation, hair line, dimples, ect.

Answer/Explanation:

HeightHair colorEar lobe shapeSkin colourHair line (widow's peak)Eye shapeHair textureDimplesCleft chin (butt chin)FrecklesNose shapeLength of second toeTeeth gapsBent vs straight pinkyPosition of eyebrows

Variation in DNA alters the sequence of genes that control many physical traits. Above are examples of traits where some of the genes controlling the traits are known

Why are you white? /j

Answers

Answer:

Michael Scott's Dunder Mifflin Scranton Meredith Palmer Memorial Celebrity Rabies Awareness Fun Run Pro Am Race for the Cure

Explanation:

Which of the following is a main difference when comparing an animal cell and a plant cell?




Plant cells lack cell walls and form fixed shapes.


Animal cells have chloroplasts and mitochondria.


Animal cells lack cell walls and are irregular in shape.


Plant cells have one vacuole, produce chloroplast, but do not have mitochondria.

Answers

Answer:

I think the answer is animal cells lack cell walls and irregular in shape animals do not have chloroplast because they do not manufacture their own food so chloroplast is only found in plants plants have cell walls

Answer:

its C

Explanation:

What are bio molecules?

Answers

Answer:

a molecule that is produced by a living organism.

Explanation:

hope this helps

please mark me brainliest

The total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that:_______

a. The total volume of plant cells is often significantly greater than the total volume in animal cells.
b. The most reasonable explanation for this observation is that plant cells have a much more highly convoluted (folded) plasma membrane than animal cells.
c. Animal cells are spherical, whereas plant cells are elongated. plant cells are capable of having a much higher surface-to-volume ratio than animal cells.
d. Plant cells contain a large vacuole that occupies much of the volume of the cell.

Answers

Answer:

d. Plant cells contain a large vacuole that occupies much of the volume of the cell.

Explanation:

The vacuole is a membrane-bound organelle which is often found in plant and fungi cells, as well as in certain bacteria, protists and animal cells. The vacuole is filled with water that forms a solution containing inorganic and organic compounds. The size of the vacuole may vary depending on the requirements of the specific cell type. In plant cells, vacuoles often occupy an important fraction of the overall cell volume and play key roles during growth and development, influencing diverse cellular functions ranging from photosynthesis to transpiration.

What happens to the Volume of gas when Thermal Energy changes?

Answers

Answer:

It increases.........

Answer: At high temperatures, the gas turns into a plasma

Explanation:

When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases.

An element in a similar period to carbon would be______.
A. chlorine
B. magnesium
C. hydrogen
D. fluorine

Answers

Answer:

D

Explanation:

fluorine

How is a protein's shape related to its function?​

Answers

Answer:

"A protein's specific shape determines its function. If the three-dimensional structure of the protein is altered because of a change in the structure of the amino acids, the protein becomes denatured and does not perform its function as expected."

Explanation:

Just finished my research, I hope the answer above can help you

All healthy, highly productive ecosystems provide which of these essential ecosystem services that involve gases in the atmosphere?

A. Increasing carbon dioxide levels in the atmosphere by the action of plants and animals.
B. Removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms.
C. Removing water vapor from the atmosphere and using it to support plant growth.
D. Removing methane from the atmosphere and storing its carbon and hydrogen in the tissues of organisms.

Answers

Answer:

All healthy and highly productive ecosystems provide the essential ecosystem services that consist in removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms (option B).

Explanation:

The carbon cycle involves the path that this element has between the biosphere and the atmosphere.

As part of the carbon cycle, the carbon dioxide (CO₂) produced by the combustion of fossil fuels or organic matter and by the elimination of animals passes into the atmosphere, and must be removed.

Photosynthesis removes CO₂ from the atmosphere and converts it into organic compounds that are stored in plants. Plants, vegetables and fruits consumed by animals contain carbon that is incorporated into other living beings.

In a healthy and efficient ecosystem, CO₂ is removed from the atmosphere to become part of living beings, as organic matter.

The other options describe processes that are not related to the actual question formulation:

    A. Atmospheric CO2 does not increase due to the action of plants.

    C. Water vapor is not removed to contribute to plant growth, but rather the plants absorb water from the soil.

    D. Methane is not removed from the atmosphere or incorporated into living systems.

How does dr. Abooker hope to apply has work to human health

Answers

He works to be a doctor

what is the order of atp-adp cycle​

Answers

What the person above said.

Complete the following table that lists the effects of changes in membrane permeability and extracellular concentration for different ions: You should be able to predict the effect that each condition will have on the resting membrane potential. The membrane potential might be expected to depolarize (D), hyperpolarize (H) or not change (NC).IONS Chargepermeability (resting) Increase membrane permeability Increase extracellular concentrationsodium potassium chloride calcium

Answers

Trippie Redd the god for life

Please help me with this bio work thanks

Answers

There are more than 20 amino acids

Proteins are made up of carbon, hydrogen, oxygen, and nitrogen (I like to remember CHON)

Protein monomers are amino acids

Covalent bonds link amino acids to form polypeptides

Enzymes are a type of protein that control the rate of reactions


I’ll fit the description of protein folding in another comment!

4. If the lab technician mistakenly added glucose instead of lactose in the medium, how
would the results and your interpretation of the results differ?

Answers

the it should equilavalent to the length and tinted the rim of it

What statements accurately describe matter? Check all that apply

Answers

The answer fam is........ Matter is made up of atoms, atoms cannot be divided If you have those answers then it's them my guy..

Answer:

matter is anything and everything. matter is what takes up space or anything has any amount of volume in it.

Explanation:

example of matter would be anything from a microscopic cell, to your pencil, to the ocean, etc. anything that takes up any amount of space.

___ is the type of active transport that moves large molecules into the cell​

Answers

the answer is: endocytosis :)
The answer is Endocytosis.

The coyote will become the apex predator and

greatly reduce the populations of foxes.

Gray Wolf

Elk

The coyote population will decrease because t

he gray wolf is the

coyote's main competition for food sources.

Insect

Beaver

Coyote

O

If another wolf is introduced to fit the same ni

che, the coyote population will decrease.

FOK

Plant

Fish

4.

As the number of coyotes increase, the numbe

r of beavers will decrease.

Observe the food web shown above. If the gray wolf became extinct,

what conclusion about the coyote population would not be valid

based on the relationships shown in the food web?

CLEAR ALL

Answers

Answer:

No, coyote will not become the apex predator.

Explanation:

No, coyote will not become the apex predator but greatly reduces the populations of foxes in order to reduce competition for available resources. Yes, The coyote population will decreases because t he gray wolf kills coyote to avoid competition for food resources. If another wolf is introduced to fit the same ni che, the coyote population will decrease because the wolf feeds on coyote. As the number of coyotes increase, the number of beavers will decrease because coyote feeds on beaver. If the gray wolf became extinct,  the coyote population increases in that location due to no predator.

organisms may contain up to five levels of organization within their bodies. which level of organization is best represented by the liver

Answers

Answer:

Among the five levels,Liver shows third level of organisation. The 5 organisations in our body are cells--Tissues--Organs--Organ system--Human body.

Question 10 of 10
Three servants were punished after they tried to escape. Two were white, and
one was black. The white servants had their contracts extended; the black
servant was ordered to serve for the rest of his life. Why were the
punishments different?
A. Because of the initial length of the servants contracts
B. Because of the servants' race
O C. Because of the servants different skills
D. All of the above
SUBMIT

Answers

I would say either A or B

HURRY PLEASE
Which event is most likely to produce air pollution that would be harmful to human health?
1. the spread of a forest fire to several thousand acres
2. steam rising from a grate in a sidewalk
3. the release of steam generated at a nuclear power plant
4. water evaporating from the surface of a swimming pool

Answers

Answer:

Number 1

Explanation:

The smoke from the fire will go everywhere and shortly but surely cause air pollution. hope this helped

Answer:

The spread of a forest fire because it would kill the trees that are producing a mass amount of oxygen for us to use. The Amazon rainforest for example makes up  a whole 30% of Earth's entire oxygen supply.

Explanation:

what’s the answer to this question?

Answers

A. Golgi Apparatus
B. Vacuole
C. Mitochondria
D. Nucleus
E. Cell wall? it's either the cell wall or membrane

Which process makes it possible for all the major organs of the body to be formed by week 10 of human
development?
O growth
O fertilization
O self-renewal
O differentiation

Answers

Answer:

Differentiation

Explanation:

The process that makes it possible for all of the body's major organs to be formed by the tenth week of gestation is known as differentiation.

Differentiation because it is the process in which less specialized cells undergo maturation to become more distinct in form and function.

In a nuclear reaction, the fuel pellets are split using what ? This also causes a chain reaction

Answers

Answer:

A nuclear reactor is driven by the splitting of atoms, a process called fission, where a particle (a 'neutron') is fired at an atom, which then fissions into two smaller atoms and some additional neutrons. ... Two examples of nuclear fissioning of uranium-235, the most commonly used fuel in nuclear reactors.

Explanation:

If the top level consumers were eliminated from a food web would the populations in the levels below them increase without bounds

Answers

Answer:

That isn't true

Explanation:

That is not true bc if the top level consumers were removed from the food chain, then the level below would become the top level of the food chain. If that happened then the level below the NEW top level of the food chain would still be getting eaten and the food chain still goes on, just with one missing level.

Hop this Helps!

<3

As temperature changes, how does the movement of particles change? Why does this happen?

Answers

Answer:

As temperature changes particles movement slows down, because they are not used to certain temperatures.

Explanation:

4. During which part of Interphase does the cell grow?

Answers

Answer:

during the interphase or G1 phase or G2

Explanation:

the cell spends most of there lives there until it makes duplicates

Which of the following is NOT a difference between normal cell division and cancer
cell division?
O Normal cells recognize signals that tell them to stop and start the cell cycle, but cancer cells
do not
Normal cells can invade other tissues, but cancer cells cannot
In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated
O Normal cells communicate with each other, but cancer cells do not

Answers

B.Normal cells can invade other tissues, but cancer cells can not.

In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated. This is not a difference between normal cell division and cancer cell division. Thus, option B is correct.

What is Apoptosis?

Apoptosis is the process in which cells are destroyed or killed for the purpose of controlling their development and growth. The normal cells follow this process but the cancer cell do not response to it and keep growing.

Normal cells can invade other tissues, but cancer cells cannot. In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated.The difference between a normal cell and a cancer cell is that a normal cells undergo while cancer cells don't Also, normal cells respond to signals while cancer cells don't.

Cancer cells are grow in the absence of signals telling them to grow. Normal cells only grow when they receive such signals. Ignore signals that normally tell cells to stop dividing or to die which is the process known as programmed cell death.

Therefore, In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated. This is not a difference between normal cell division and cancer cell division. Thus, option B is correct.

Learn more about cancer on:

https://brainly.com/question/8590464

#SPJ2

Which food items can be broken down mostly into amino acids

Answers

Answer:

all bc it is

Explanation:

what would happen if the body kidney failed
A.the body with not be able to produce enough blood
B.the body will not be able to get rid of waste products made by cells
C.the body will not get sufficient amount of clean water
D.the body will not be able to dispose of carbon dioxide in the blood

Answers

Answer:

b

Explanation:

the kidneys clean out waste in your body

Answer:

The answer is B. The body will not be able to get rid of waste products made by cells.

Good luck :)

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