Which of the following is true about molecules?
1. Composed of the two same atoms

2. Composed of two different atoms

3. H2O is an example of molecule

4. All of the above is true.

Answers

Answer 1

Answer:

4) All of the above is true.

Why?

When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. For example, when three oxygen atoms bond together, they form a molecule of ozone (O3). If a molecule forms from atoms of two or more different elements, we call it a compound. Every combination of atoms is a molecule. A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. This is because they are all made up of different types of molecules. Molecules are not only made up of different types of atoms but also different ratios. Like in the water example above, a water molecule has 2 hydrogen atoms and 1 oxygen atom. This is written as H2O.

Sorry for the long paragraph. I wanted to get my point across.


Related Questions

The Canadian lynx and the snowshoe hare have a predator-prey relationship. You will use two sets of population data and present them in a single graph.
Using the second picture below,label the x-axis ‘‘Year of Study’’.Label the x-axis with data listed in the first picture.(pls make sure that the grid your using is same as picture two below)


Based on the sizes of the numbers for each population, create a scale on the two separate y-axes. The snowshoe hare population ranges in size from 5000 to 95000. Label the y-axis on the left side of the x-axis as “Hare population (in thousands)." Number this y-axis from 0 to 100, in intervals of 10. The lynx population ranges in size from 500 to 6000. Label the y-axis on the right side of the x-axis as "Lynx population (in thousands)." Number this y-axis from 0 to 10, in intervals of 1.


Construct a line graph using the data from the first picture below.Use a different coloured line for each population.


Give your graph a title.Create a legend for your graph so it is easy to read.

Answers

Answer:

Here you go, mate. Good luck.

Explanation:

Help!!!!!! This is a review NOT a test!!!! Marking brainliest!!!!

Answers

answer:

i believe you are correct

good luck :)

hopefully, this helps

have a great day !!

Yes I think you are correct. That is the only answer that makes the most sense

Which is the best definition of weathering?
settling of Earth’s materials when water slows downb.swelling Earth’s materials as they soak up waterc.breaking up of rocks from wind, water, plants, or animalsd.transport of Earth’s materials by wind, water, or ice

Answers

Answer:

Breaking up of rocks from wind , water, plants or animals

Explanation:

this is called weathering

hope it helps

3. What is an anti-mycotic?​

Answers

In Wikidata. An antifungal medication, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis (thrush), serious systemic infections such as cryptococcal meningitis, and others.

Answer:

anti-mycotic or Antibiotic-Antimycotic is a type of solution that is most commonly added to cell culture media to basically prevent contamination by any various bacteria and fungi.

In pea plants the trait for tall height is dominant over the trait for dwarf height. Which letter should be used to represent the genotype for plant height?

D
F
L
T

Answers

Answer:

The correct answer is - T.

Explanation:

Normally, the representation of the trait in the genotype of inheritance pattern is the first letter of the dominant character of the particular trait. In this case, the trait of the height of the pea plant is tall and dwarf.

Tall plants are dominant over the dwarf plant, therefore, the letter T would be used to represent the genotype for the height of pea plant, the small letter of the particular letter would be used to represent the alternate allele of the trait.

Answer:

T :) ️‍^m^

Explanation:

When S strain bacteria were killed by being heated to 60C, then mixed with live strain bacteria and injected into mice, a greater % of
mice died than when the strain bacteria were heated to 100C. Can you propose an explanation for these observations?

Answers

Answer:

Due to live strain bacteria.

Explanation:

The first method cause more damage to the mice as compared to the second method because in the first method the killed bacteria were mixed with the live strain bacteria. This live strain bacteria causes diseases in the mice and eventually killed the mice while on the other hand, all the bacteria were killed due to very high temperature so that's why first method causes more damage than second one.

I NEEEEDDD HELP PLEASE

Answers

........................

Answer:

the answer is 25%red 50%pink and 25% white

Explanation:

think of it like a box and make that box into 4 pieces put rw on top and rw on the side

What are 2 ways in which a xylem vessel is similar to an artery?​

Answers

Answer:

The xylem and phloem of plants are most similar to veins, arteries, and capillaries. ... In this sense, xylem are completely unlike the circulatory system. Even the sap that flows in a tree has no transport cells like red blood cells and white blood cells; it is a fluid containing loose sugars and nutrients.

The two ways where a xylem vessel is similar to an artery is explained below:

The following information should be considered;

The xylem and phloem of plants are mostly same to veins, arteries, and capillariesXylem are completely unlike the circulatory system. Even the sap that flows in a tree does not contain any transport cells such as red blood cells and white blood cells.

Learn more: https://brainly.com/question/1368131?referrer=searchResults

PLZ HELP I REALLY NEED HELP

Which of the following genotypes for human blood type shows alleles that are codominant?

A. AO (or IAi)

B. AB (or I4IB)

C. BB (or IBIB)

D. AA (or IAIA)

Answers

Answer:

B

Explanation:

The IA and IB alleles are codominant, and the i allele is recessive.

Individual organisms evolve over time.

true
or
falce

Answers

Answer:

False

Explanation:

Individual organisms don't evolve over time. This is because evolution is passed down to offspring over time.

Individual organisms don't evolve. Populations evolve. ... These individuals generally survive and produce more offspring, thus passing their advantageous traits on to the next generation. Over time, the population changes.

Phenylketonuria (PKU) is a disease that is caused by the mutation of a single gene. The mutation can cause several problems, such as mental ret*rdation, lightly colored hair and skin, and lower IQ.

The disease phenylketonuria is an example of how
A.
a single gene can only affect a single trait.
B.
multiple genes can affect a single trait.
C.
a single gene can affect multiple traits.
D.
all of these

Answers

Answer:

C ..A single affect multi traits

Answer:

C ..A single affect multi traits

Explanation:

explain the difference between mechanical weathering and chemical weathering. ​

Answers

Answer:

below

Explanation:

Mechanical weathering breaks rocks into smaller pieces without changing their composition. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.

When a warm front is approaching, what happens?
A. advancing cold air pushes up and over retreating warm air causing warm temperatures and mild rain
B. advancing warm air pushes up and over retreating cold air causing warm temperatures and mild rain

Answers

Answer:

The air mass behind a warm front is likely to be warmer and more moist than the one before the front. If a warm front is approaching, light rain or light winter precipitation is possible before and as the front passes. Behind the front, expect clearing skies, warmer temperatures and higher relative humdities.

Explanation:

(︶^︶)

B = Short b = Tall P = Mean p = Nice Look at the dihybrid punnett square carefully. How many of the offsprings are both tall and mean?
A) 4 out of 16
B) 8 out of 16
C) 3 out of 16
D) 12 out of 16​

Answers

Answer:

4 out of 16

Explanation:

A small group of deer are forced to leave the herd in search of a new habitat with more food. If the allele frequencies of the small group is identical to that of the large population, which of the following statements apply?

Read this question carefully!

1Points
A
Genetic drift has not occurred.

B
The bottleneck effect has happened.

C
The two groups will become different species.

D
The genetic variation of each group will be altered.

Answers

Answer:

the genetic varation of each group will be altered

In the case when the allele frequencies of the small group should be same to the large population so here the genetic variation for each group should be changed.

What is genetic variation?

It is the variation that shows the presenting of the differences with respect to the sequence of genes lies between the individual organism with respect to the species. Since the allele frequencies of the small group should be same to the large population so here the genetic variation for each group should be changed.

Learn more about allele here: https://brainly.com/question/18999457

What is true of the waste generated by nuclear power?

A: increases greenhouse effect

B: causes air pollution

C: remains hazardous for a long time

D: creates acid rain
(this is science btw)

Answers

A or B I think, hope helps

Answer:

c

Explanation:

Brad was provided with a piece of bread and egg yolk. He wants to know which component is present in the given food. Suggest him the scientific procedures to find the right component present in each food item.

Answers

Answer:  Please see explanation column

Explanation:

Sample provided to Brad = a piece of bread and egg yolk

1. We know that Bread is a carbohydrate containing starch  

To investigate the presence of starch/ Carbohydrate  in Bread

Materials: Bunsen burner,test tubes, food product -Bread,iodine solution

Method

1. Place a sample of bread  into the test tube.  

2. Place a few drops of iodine solution on the bread

3. Take  observations.

4. Wait a few more minutes and note any other changes.

Observations

On addition of iodine to the bread , if we notice a blue-black  coloration,  we will conclude that the right component found in bread is starch /carbohydrate

The above procedure can also be confirmed using

-Molisch’s reagent–which gives us a purple or violet color ring on addition to the bread

- Fehling’s reagent  –which gives a Red precipitate to indicate  the presence of  in the bread

-Benedict’s reagent  –which gives  Red precipitate to indicate  the presence of carbohydrates in the bread.

-Tollen’s reagent – which gives us Silver mirror to  confirm the presence of carbohydrate in the bread.

2. We know that egg yolk contains protein,

To investigate the presence of Protein  in egg yolk using biuret test

Materials: Bunsen burner,test tube, food product -egg yolk ,   Aqueous copper sulfate solution

Method

1. Place a sample of egg yolk   into the test tube.  

2. Place a few drops of  Aqueous copper sulfate solution  on the sample of egg yolk

3. Note observations.

4. Wait a while and  note any other changes.

Observations

On addition of Aqueous copper sulfate to the egg yolk  , if we notice a violet coloration,we will conclude that the right component found in egg yolk is protein

The above procedure can also be confirmed using

Xanthoproteic test – which on addition of  Nitric acid to the egg yolk gives a Yellow coloration

Millions test – which on addition of  Mercuric sulfate in the presence of sodium nitrite and sulfuric acid to the sample of egg yolk gives  Brick red color solution confirms the presence of proteins.

Ninhydrin test – which on addition of  Pyridine solution of ninhydrin to the sample of egg yolk gives  Violet color solution confirms the presence of proteins.

In a dihybrid cross, if the genotypes of one the parents is BbTT, what genes would you put on the outside of the Punnett square?

Answers:

BT, Bt, BT, Bt

BT, BT, BT, BT

BB, bb, TT, tt

BT, BT, bT, bT

Answers

Answer:

BT, BT, bT, bT

Explanation:

According to Mendel's law of independent assortment, the alleles of a gene will separate into gametes independently of one another i.e. one allele of a gene does not hinder the separation of another. The separation occurs via meiosis in such a way that only one allele of a gene is present in each GAMETE.

These gametes are what forms the crossing basis in a punnet square. According to this question involving a dihybrid cross, the genotype of one of the parents is BbTT. The allelic combination of the gametes will be: BT, BT, bT, bT. These gametes will be put on the outside of the Punnett square.

Answer:

BT,BT,bT,bT

Explanation:

It's 50/50.

A molecule that can mix with water and a store for energy in the body

Answers

Answer:

Glucose

Explanation:

Glucose is a source of energy and it is stored in the body (in the form of glycogen) and it can also dissolve in water

Answer:

liver is the answer plllllllll

ONLY ANSWER IF YOU KNOW

What is the main function of the Krebs cycle?

A. To break glucose down into two pyruvate molecules
OB. To produce carbon dioxide for use in the thylakoid
O C. To produce large numbers of ATP molecules
O D. To provide molecules for the electron transport chain

Answers

Answer: O D. To provide molecules for the electron transport chain

Explanation:

Enzymes obtained by microbial process are mixed with detergents?​

Answers

Answer:

Enzymes obtained by a microbial process are mixed with detergents because it makes the cleaning process efficient. The addition of enzymes to detergents makes them efficient in removing dirt with an added advantage of being able to work at lower temperatures.

Explanation:

Hope this right.But if it's wrong,im so sorry...

Have a nice day

What keeps earths temperature suitable for life

Answers

Answer: The Earth has a suitable climate for the existence of all forms of life because of moderate amount of carbon dioxide, which is the driving factor for the survival of life forms. The temperature of planet Mercury ranges from 200°c below freezing to 375°c above. Hopes this helps. Can u pls pls pls mark me as brainliest

Explanation:

Were invertebrates more common? Did most organisms live on land or in the sea?

Answers

Answer:

Yes, invertebrates are common than vertebrates. Most organisms started off in the sea, then adapted to live on land.

Explanation:

In the past, the first animals were mostly invertebrates and lived in the water for a certain amount of time. Then, they developed the right body parts to be able to live on the land.

Answer:

invertebrates are animals with no backbone.

write the name of reproduction process that occurs in tapeworm?​

Answers

Answer:

Hermaphroditic Reproduction

Explanation:

See image for more

Depending on the species and circumstances, tapeworms can reproduce sexually or asexually. Proglottids, the several body segments that make up a tapeworm, are composed of both male and female reproductive cells.

What Hermaphroditic reproduction occurs in tapeworm?​

Some parasitic species, like the tapeworm, are both hermaphroditic and self-fertile, ensuring reproduction even if the parasite is the only member of its species present in the host.

Because tapeworms are hermaphrodites, each segment has both male and female reproductive organs. As the segment is pulled away from the neck, viable eggs will be released into the environment. When the segment is loaded with eggs, it separates from the adult tapeworm and is excreted in faeces.

Therefore, Hermaphroditic reproduction process that occurs in tapeworm.

Learn more about tapeworm here:

https://brainly.com/question/8663159

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Which organelles make up animal cells? pls i have an assignment in 1 hr

Answers

Answer:

Organelles in animal cells include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles

Explanation:

can someone give me a summary of dna replication?

Answers

Answer:

dna

Explanation:

DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.

DNA replication is the process by which DNA makes a copy of itself during cell division.


Franklin, Watson, and Crick's model of DNA shows a double helical structure where two strands of
DNA run antiparallel to each other. How does this structure cause the number of purines to equal
the number of pyrimidines as observed by Chargaff?
If adenine is on one strand, guanine must be on the other strand.
If thymine is on one strand, cytosine must be on the other strand.
If adenine is on one strand, thymine must be on the other strand.
If adenine is on one strand, cytosine must be on the other strand.
Pregunta 3
5 pts

Answers

Answer:

If Adenine is on one strand, thymine must be on the other strand.

Explanation:

(Thymine + Adenine) (TA) (AT)

(Cytosine + Guanine) (CG) (GC)

The processes involved with reproduction and nurturing a growing zygote
require energy use beyond normal maintenance. What is the best way certain
organisms reduce the energy costs of reproduction?
A. The parents each take turns nurturing the offspring.
B. They reproduce asexually.
C. They have multiple offspring in one pregnancy.
D. They reduce their gestation period.

Answers

Answer:

B. They reproduce asexually.

Explanation:

Asexual reproduction often known as abiogenetic multiplication requires just one parent organism and results in hereditary identical progeny (similar to a new copy). Since there is no blending of genetic data required and organisms don't have to invest energy finding a mate, populaces can increment quickly because of asexual generation. Thus, with the guide of asexual generation, the energy needed in the process associated with multiplication and nurturing is diminished contrasted with sexual reproduction.

HELP PLEASE OTS DUE LIKE IN AN HOUR!!!!!!!!!!

Answers

the first one's answer is : Nickel

and the second part's answer is : Green Kryptonite

Which field studies the DNA of living
organisms to understand their growth and
development?

Answers

Biochemists and Biophysicist
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