Determine the number of protons, electrons, and neutrons present in an atom of calcium (Ca). Explain how you determined your answer using complete sentences.

Answers

Answer 1

Calcium has a number of 20 protons, electrons, and neutrons. Since it looks like the atoms has a charge to it so it has not gained or lost electrons the number of electrons hasn’t changed. Also the atomic number of the element (or the number 20) determines how many protons, neutrons, and electrons in an element without a charge.

Answer 2

Calcium has a number of 20 protons, electrons, and neutrons.

What are the functions of calcium?

Calcium is a mineral most often associated with healthy bones and teeth, although it also plays an important role in blood clotting, helping muscles to contract, and regulating normal heart rhythms and nerve functions.

Calcium is essential for building and maintaining healthy bones and teeth. Among other roles, it may also help manage blood pressure. It is best to obtain sufficient calcium through dietary sources.

Calcium is useful for the formation of bones and teeth in the human body. The body needs calcium in order to circulate blood, move muscles, and release hormones.

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Related Questions

Only answer if you have an answer to one of the questions. Thank you.

Answers

assuming maintains internal conditions means homeostasis, your body defecates and urinates any toxins from food or drink. this is because some food is harmful to your blood, heart, stomach, etc and can cause even more harm if they are not eliminated.
hope this helps!!! :)

A part of the periodic table is shown.
Which of the following elements is less reactive than the others? Beryllium (Be) Calcium (Ca) Lithium (Li) Magnesium (Mg)

Answers

Answer:

Beryllium (Be)

Explanation:

Remember periodic trends...

Period: reactivity decreases as you go from left to right

Group: reactivity increases as you go down the group

Beryllium (Be) is less reactive

Which is most likely a chemical property?
A) Oxidation state: the charge an atom has if it was bonded ionically to other atoms Different oxidation states indicate different abilities to bond with other atoms.
B) Melting point: the temperature at which a solid turns into a liquid. Different substances have different melting points.
C) Density: the amount of a substance that fits in a certain volume. Different states of matter of the same substance can have different densities.
D) Conductivity: the ability to transfer electrical charges. Conductivity is different in different substances.

Answers

Where is the word that represent chemical property like that toxicity,acidity, etc

Answer:The oxidation state

Explanation:

i’m just a little confused can someone explain ?

Answers

Basically, there is a presentation of types of food and the amount of those foods over 50 years in this graph. This means the graph is showing amounts of certain foods over the time period. I'm guessing that basing off of the the previous text you're just noting a change in the breaks of birds based off of the diet available to them at certain times. The adaptations and natural selection will explain the changes because due to certain limited and available foods the diet of the birds change.

noooooooooooooooooooooooooooooo

Answer these two questions

Answers

24. A (not so sure tho)
25. B ; because force is equal to the product of mass and acceleration

Hope this helps

You overheard a classmate in the hallway say the following statement.
???: it gets warmer when you move up the atmosphere because you are getting closer to the sun.”
Do you agree or disagree with him.
If possible could you explain why you agree or disagree it could help me a lot because I’m kinda confused.

Answers

I would say, no it gets colder because you become exposed to space where heat isn’t trapped in

i agree with him because hot air rises. if you lay on the floor it will be cooler, so it’s kinda a vice versa situation if what he says.

Compare the structures for genetics with every day objects. Must include the words: genes, DNA, chromosomes, and nucleus.

Answers

Answer:

Genes play an important role in determining physical traits — how we look —and lots of other stuff about us. They carry information that makes you who you are and what you look like: curly or straight hair, long or short legs, even how you might smile or laugh. Many of these things are passed from one generation to the next in a family by genes. Most cells have one nucleus. The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell. It tells every part of the cell what to do. It contains our chromosomes and genes. Chromosomes come in matching sets of pairs and there are hundreds (sometimes thousands) of genes in just one chromosome. The chromosomes and genes are made of DNA.

Identify the fluxes by which water leaves organisms of the biosphere and moves to other spheres.
condensation
evaporation
precipitation
transpiration
urination

Answers

i believe it is precipitation

I think the answer is precipitation

CONDUCTION, CONVECTION OR RADIATION . put the number by which one you answer

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21- conduction .....

10- Radiation ........

Please help will give brainliest if answer is backed up with two sentences!

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Answer:

Oxygen molecules from the air he breathe pass through his respiratory system and sent to his cells through a circulatory system. The digestive system of Ezra breaks the starch in the bread and protein in the cheese into necessary glucose and amino acids.

The chemical reaction takes place between glucose and oxygen to generate energy by Ezra's cells. The energy generated by the cell is released, so that Ezra have enough energy to play basketball.

Explanation:

I’m trying to ask a question sorry

Can you rank all 6 biomes by annual rainfall?

Answers

no. i can no do that

no i’m sorry we can’t do that

How do you use gene version in a sentence?

Answers

Answer:

That is quite a gene pool you two have

Explanation:

Answer:

You have your father's genes.

I couldn't think of anything else lol

The heart is an example of several similar tissues working together to do a specific job for an organism, which level of organization represents the heart?
А cell
B
tissue
C
organ
D
organ system

Answers

The answer would be C, and organ.

Which property can be used to identify a pure substance as an element?
А
only one shape
B
only one type of molecule
С
only one type of atom
D
only one color

Answers

Answer:

Explanation:

BECAUSE IT CARRYS MULTIPLE ATOMS

the answer is B: only one type of molecule

How does kidney failure prevent the excretory system from operating?

The bladder stops working.

Blood is not properly filtered, leaving waste in the blood.

It does not affect the excretory system.

The intestines stop working.

Answers

Answer: B. The blood is not properly filtered, leaving waste in the blood

Explanation: took the test

Who were carriers for of hemophilia in the royal family?

Answers

She is the carrier( the queen)

How can I describe the yearly temperatures of the Tundra biome?

Answers

Answer:

well..The arctic tundra has average winter temperatures of -34° C (-30° F) and average summer temperatures of 3° to 12° C (37°to 54° F).

Explanation:

hope this helps :) brainelsit?

The arctic tundra has average winter temperatures of -34° C (-30° F) and average summer temperatures of 3° to 12° C (37°to 54° F).

Proxima Centauri and the Sun are both main sequence stars, but Proxima Centauri is a red dwarf and the Sun is a yellow dwarf. Based on the information you charted, compare the characteristics of red dwarf stars and yellow dwarf stars.

Answers

Answer:

Red dwarfs are low-mass main-sequence stars. Yellow dwarfs are main-sequence (dwarf) stars with masses comparable to that of the Sun.

Sun is younger then proxima centauri as it is a red dwarf star whereas sun is a yellow dwarf. We now this as stars need hydrogen to burn and the older they get they get more red.

Read the following sentence:

"When you look at a basketball, what are you seeing?"

Why might the author have started the passage with this question?

a
to give the reader an object to visualize before examining the role of light
b
because the main idea of the passage is about basketball
c
because the author wants to use the example of basketball to explain electromagnetic radiation
d
to show how important the color orange is to electromagnetic waves

Answers

Answer:

Explanation: B because its talking about basketball

Answer:

I'm pretty sure A would be the answer

Choose the correct level of organization (smallest to largest) in the skeletal system. *
6 points
Osteocyte → Compact Bone Tissue → Femur →Skeletal System
Compact Bone Tissue → Osteocyte → Femur →Skeletal System
Compact Bone Tissue → Skeletal System → Osteocyte → Femur
Osteocyte →Compact Bone Tissue → Skeletal System→ Femur

Answers

I believe it is Osteocyte - Compact Bone Tissue - Femur - Skeletal System

It’s definitely the first one!

An organ within an organism accomplishes tasks. To engage in these tasks, an organ typically requires
energy provided by other organisms.
B
interaction with other organ systems.
С
communication with other organisms.
D
segregation from other organ systems.

Answers

Answer:

I think that it is the first one :)

Explanation:

Pls pls tell me if im wrong, ill do my best to fix it

B. Interaction with other organ systems.

What is an organ ?

An organ within an organism performs specific tasks to maintain the overall health and function of the organism. To accomplish these tasks, an organ typically requires interaction with other organ systems within the organism.

For example, the digestive system works in tandem with the circulatory system to transport nutrients to the cells, while the respiratory system works with the circulatory system to deliver oxygen to the body. By working together, the different organ systems help to maintain the overall health and function of the organism.

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What is the passage mainly about?

a
different tools humans have invented to harness information
b
gamma rays and x-rays
c
electromagnetic waves and how humans utilize them
d
why waves have different wavelengths

Answers

Answer:

What is the passage?

Explanation:

Answer:Where is the passage D

7th grade science help pls

Answers

Answer:

Explanation: the genes carry what is needed to change, and the cells change due to what is happening in the genes

Answer:

with what

Explanation:

becuse how am i going to help

Please give me good luck I have a sciene test and I am not good at science

Answers

good luck! I’m sure you can do it :)

Answer:

* gives luck * :3

there ya go

Match each part of a flower with the correct description.
1. entire male part of a flower _ anther
2. entire female part of a flower _ filament
3. produces pollen _ stamen
4. sticky top of pistil _ pistil
5. connects stigma to ovary _ style
6. thin stalk connected to anther _ stigma

Answers

Answer:

1. stamen

2. pistil

3. anther

4. stigma

5. style

6. filament

I don’t know if 3, 5 or 6 is correct but i know 1, 2 and 4 is

Answer:

1 - stamen

2 - pistil

3 - anther

4 - stigma

5 - style

6 - filament

Describe a DNA mutation and how it can affect an offspring.

Answers

A DNA mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes. DNA mutations can affect an offspring can result in abnormal protein products. Mutations can also introduce new alleles into a population of organisms and increase the population's genetic variation.

Since all cells in our body contain DNA, there are lots of places for mutations to occur; however, some mutations cannot be passed on to offspring and do not matter for evolution. Somatic mutations occur in non-reproductive cells and won't be passed onto offspring. For example, the golden color on half of this Red Delicious apple was caused by a somatic mutation. Its seeds will not carry the mutation.
The only mutations that matter to large-scale evolution are those that can be passed on to offspring. These occur in reproductive cells like eggs and sperm and are called germ line mutations.

Only answer if you have an answer to the question. Thank you.

Answers

Answer:

A familiar example of homeostatic regulation in a mechanical system is the action of a thermostat, a machine that regulates room temperature.

Explanation:

Answer:

Humans' internal body temperature is a great example of homeostasis. When someone is healthy, their body maintains a temperature close to 98.6 degrees Fahrenheit (37 degrees Celsius). Being warm-blooded creatures, humans can increase or decrease temperature internally to keep it at a desirable level.

Explanation:

Forceful lifting of air along a cold front can lead to heavy rains and strong winds.

Is this true or false (trying to make sure my answer is correct so please answer if you don’t mind!)

Answers

Answer:

True

Explanation:

i’m not sure but i think true

HELPPPP ASAP!!!!! These are the last onesss

Answers

Question 2 has no motion question 3 is accelerating and Question 4 is decelerating

3. A
4. C
2. B
This isn’t biology

please help meh it's due in a hour and I'm prolly gonna fail science!! will give brainly to paragraph!

write a paragraph explain the relationship between a quasar and a black hole. using your own words, explain why this relationship might be of interest to astronomers.

Answers

Answer:

hey, this might not be much help but quasars are just galaxies while a black hole is just an invisable space that sucks all light and has VERY strong gravity. Astronomers will find this interesting because... omg am so sorry this is all I got :c I hope u pass this semester. Good luck dude

Explanation:

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