Chemistry Middle School

Which statement is true about DNA?

Group of answer choices

. DNA contains genes that hold specific traits for an organism.

Organisms create their own DNA sequence that is not like their parents.

DNA is an exact copy from parent to offspring.

DNA is not necessary for an organism to reproduce.

Answers

Answer 1
It is the first option. DNA is kind of like code. It is a specific formula made for the production of offspring. The thing to notice is that when two animals meet their DNA mixes and makes a entire new layout. Basically every DNA sample is different, much like a fingerprint or even a snowflake. In conclusion the answer is option A. Have a great day!
Answer 2
the answer to ur question is A

Related Questions

Every organism requires a set of instructions that specifies its traits. Which statement BEST describes the hereditary information in a cell?
pls help
A gene, but not DNA, is passed on to the next generation.

Each chromosome contains a single gene.

Genes are located on the chromosomes.

A gene, but not a chromosome, is made of DNA.

Answers

Answer:

the only option that is correct is the third

Explanation:

the second isn’t correct because they contain strands of thousands of genes. The first isn’t correct because they are both passed on. The last one isn’t correct because they are both made up of DNA

The third one is the correct answer

What is coevolution? *
A. When two species evolve in response to each other
B. When 2 sub group of the same species evolve at the same time
C. When the environment and the animals within the environment evolve at the same time

Answers

Answer:C

Explanation:

I would say it’s option A.

Hope this helped and have a nice day :)

True or False?

Density of ocean water is not affected by salinity (salt content).

Answers

Answer:

false

Explanation:

Answer: yes it its true.

Explanation:  I just see that in a exam

what three-letter code tells that the protein is complete?

Answers

Answer:

here we have UGA as the stop codon, the other codons are UAG & UAA. It's the portion of the instructions (our RNA) that tells us that the protein strand production stops there.

UGA ....................

please help answer both and ill give brainiest.

Answers

Answer the air mass in question 1 would be humid and hot shan owing that it is on the ocean

and the air mass in region 2 would be cold because of the mountains restricting the airflow causing it to be cold.

Region 1 is water and it would be warm. I was expect the air mass to be rain. Region 2 is land and it would be cold. I would expect the air mass to have snow,

your alien friend from planet xenon is visiting and wants to learn how to breed pea plants you show your friend a recent batch of pea plants with purple flowers that you grew by crossing plants that had purple flowers with plants that had white flowers your friend is confused as to why your plants all have purple flowers how would you explain in the simplest way possible what happened

Answers

Answer:

The purple flowers were probably was dominate allel and the white flowers were recessive.

Explanation:

HElp i will give you brainliest

Answers

Answer: Mass

Explanation:

Answer: masses

Explanation:

NO LINKS
air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclude that air?
A.is a pure substance.

B. is a mixture of at least two gases.

C. consists of different states of matter.

D. consists of components that are chemically joined.

Answers

B because there is 2 gases in the air that we know of because of the text

What is the SI unit for weight? NO LINKS I will give brainliest
(and no its not kg)

Answers

Answer:

I think it is Newtons.

It’s Newtons or kilograms

What type of chart is used to help organize study and predict genetic inheritance?
(16.5 Points)

Punnett square

flow chart

graph

diagram

Answers

The answer is punnet square
punnet square is correct

The Koppen Classification System splits the world into 5 climate zones.

What was used to determine these 5 different zones?

There are 3 correct answers.

Vegetation

Temperature

Animal life

Precipitation

Water Quality

Answers

Answer:

animal life

temperature

vegetation

Explanation:

I believe this is right

Animal life, vegetation, and temperature?

PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
~Read the article excerpt then respond to the question below.~
"Scientists make synthetic substances by arranging atoms and molecules in the lab. They use what they know about different types of atoms and molecules to arrange them and make the kinds of substances they want.
Synthetic medicines aren’t any different at the atomic level from the natural medicines found in the rainforest. After all, molecules are just molecules—whether they’re made in nature or in a lab, the same types of atoms arranged in the same ways always form the same molecules that behave in the same ways."

At the atomic level, are synthetic medicines different from natural medicines?
Explain your thinking.

Answers

Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.

Although herbs medicines are less potent in comparison to synthetic drugs in some cases but still these are considered less toxic or having less side efffect in contrast to synthetic drugs. The ultimate norm for any medicine is their non toxicity effectiveness etc.

(a) What human activity is responsible for the formation of smog and acid rain? (b) What kinds of harm does photochemical smog cause? (c) Do you think that photochemical smog levels are high during the winter or during the summer? Explain.

NO FILES OR I REPORT >:-((

Answers

Answer:

Explanation:

a) Air pollution

b) It can cause climate change, respiratory problems etc

c)Winter. More energy is being used in the winter to heat  homes, offices, businesses etc.

Chemists predict the geometry of molecules based on the repulsion of electron pairs. Molecules can be represented by the general formula AXY, where Y is the number of peripheral atoms. We would expect the geometric shape of a molecule represented by the formula AX3 to be

A) linear.

B) tetrahedral.

C) trigonal planar Eliminate

D) trigonal bipyramidal

Answers

Answer:

i think b

Explanation:

B- tetrahedral should be the answer

Which two minerals can be scratched by a knife but not copper coin?

Answers

calcite and fluorite <33

We can drink water straight from the ocean without purifying it.



True

False

Answers

False. The water would be toxic without purifying it before drinking.

False just common sense.

Based on the pedigree, how many offspring from this cross had the recessive phenotype?

(17 Points)


one


two


three


five

Answers

It really depends on the partner of the recessive phenotype. But 2

Answer:

two

Explanation:

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