Assume that a DNA double helix contains 100 base pairs (one pair is A-T or C-G) and there are 45 cytosines.
a. How many guanines are there?
b. How many adenines are there?

Answers

Answer 1

Cytosine(C) binds with Guanine(C)

Adenine(A) binds with Thymine(T)

a.From here we can deduct that there are the same number of nucleotides of guanine that as cytosine=>G=45 base pairs

b.2A=100-G-C

   2A=100-90 2A=10 A=5 base pairs


Related Questions

A pollen grain is:

a. the male reproductive structure of the seed plant.

b. the female reproductive structure of the seed plant.

c. the male reproductive structure of algae.

d. the female reproductive structure of algae.

Answers

A is the answer to this question

Una planta de jardín presenta dos variedades: una de flores rojas y hojas alargadas y otra de flores blancas y hojas pequeñas. El carácter color de las flores sigue una herencia intermedia, y el carácter tamaño de la hoja presenta dominancia del carácter alargado. Si se cruzan ambas variedades, ¿Qué proporciones genotípicas y fenotípicas aparecerán en la F2? ¿Qué proporción de las flores rojas y hojas alargadas de la F2 serán homocigóticas?

Answers

Answer:DA FAW>K

Explanation:

Products enter a reaction and reactants come out of a reaction true or false?

Answers

Answer:

[tex]\boxed {\boxed {\sf False }}[/tex]

Explanation:

In a chemical reaction, the products are produced. The reactants are the substances that react.

In a chemical reaction equation (with the arrow pointing right) the reactants are on the left and the products on the right.

[tex]reactants \rightarrow products[/tex]

The reactants enter and the products come out.

So, the statement given - products enter a reaction and reactants come out - is false and it is actually the other way around.

A genome identifies genes in an organism. Which part of the DNA molecule is examined to determine the genetic proteins and traits of an organism?

Answers

Answer:

sequence of nitrogen bases

Explanation:

i’m taking my exam rn and that was the correct answer

Answer:

sequence of nitrogen bases

Explanation:

list 2 examples of traits​

Answers

Answer:

Eye color

Blood type

Explanation:

 your hair and eyes also your eye color

Explanation:

The different forms of a gene are called
(1 Point)
traits
hybrids
alleles

Answers

I believe it’s alleles

Select all the correct answers.
Snakes, dogs, and humans have a vertebral column. Snakes and dogs have tails, and humans have vestigial tailbones. Dogs and humans have limbs, but snakes do not. Most reptiles lay eggs, but a few give birth to live young. What do these structures suggest about the evolutionary pattern between the three organisms?


A Snakes and dogs are more closely related than snakes and humans.
B Snakes and humans are more closely related than humans and dogs.
C Dogs and humans are more closely related than snakes and humans.
D Dogs, snakes, and humans share a common ancestor.
E The early ancestor of snakes and dogs is the same, and the early ancestor of humans is different.

This is for Science Please Help!!

Answers

These structures suggest that Dogs and humans are more closely related than snakes and humans.

Does snake have backbone?

Yes, snakes have a backbone. The backbone is made up of a series of bones called vertebrae, which are connected by ligaments and muscles. The vertebrae of a snake are unique because they are loosely connected, allowing the snake to move and bend in a wide variety of directions.

Dogs and humans are more closely related than snakes and humans because they both have vertebral columns, tails, and limbs while snakes only have a vertebral column and a tail. This suggests that a common ancestor shared these features with both dogs and humans, while the common ancestor of snakes did not possess these features.

Therefore, Dogs and humans are more closely related than snakes and humans is the correct answer.

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Dogs, snakes, and humans share a common ancestor. The presence of a vertebral column in all three organisms suggests that they belong to the same group of vertebrates,

So the correct answer is D.  Dogs, snakes, and humans share a common ancestor.

What is a common ancestor?

A common ancestor is a hypothetical organism that is ancestral to two or more different groups of organisms. In other words, a common ancestor is an organism that gave rise to two or more distinct lineages through evolutionary divergence. All organisms that share a common ancestor are said to be related, and their evolutionary relationships can be represented as a branching tree-like diagram called a phylogenetic tree. The concept of a common ancestor is fundamental to evolutionary biology, as it allows scientists to infer the evolutionary history and relationships between different groups of organisms.

Dogs, snakes, and humans share a common ancestor. The presence of a vertebral column in all three organisms suggests that they belong to the same group of vertebrates, but differences in tails and limbs suggest that their ancestors underwent evolutionary changes that led to these differences.

Therefore, options A and C are partially correct but do not capture the full picture, while option B is incorrect. The correct answer is D.

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I need to know this I will MARK BRAINLIEST WHO EVER ASWERS FIRST

Answers

Answer:

If i am supposed to choose more than one, i would say that plants, animals and bacteria are biotic factors.

Explanation:

A biotic factor is a living organism that shapes its environment.

Any amount of CO, (Carbon Dioxide) in the
atmosphere is bad for our planet.

A. True
B. False

Answers

Answer:

False

Explanation:

The question states "Any amount of Carbon Dioxide". This includes the amount we exhales. However it is not harmful, as plants require Carbon Dioxide for photosynthesis. Therefore, any amount, is not harmful to a certain degree.

False.............:

A farmer is spraying his crops with a specific pesticide. He notices a drastic decrease in the insect population, so he uses the same pesticide the next year. This time, more insects survive. The next year, almost no insects are killed by the pesticide. Why is this happening?

Answers

Answer:

Probably insects developed resistance to the pesticide.

Explanation:

The term resistance refers to an inheritable change in the population sensitivity, reflected through the consecutive failure of the chemical effects, correctly used in order to reach a certain effect on the insect population.  

Insecticides might produce a genetic modification in the insects, leading them to survive under the effects of the chemical. Insects evolve with the capability of tolerating the poison dose that normally is used to destroy a normal population of plagues.

In the exposed example, the first time that the farmer sprayed the pesticide, the insect population decrease sharply. This means that the chemical affected them severely. The surviving individuals probably suffered a genetic modification and survived. They probably passed this modification to the following generations, which expressed it, and developed resistance to the pesticide.

I will give brainliest for the first person who guess this correctly.
What is this weird creature?
a) Mata Mata
b) Fly river Turtle
c) Axoloti
d) Gator Tortoise​

Answers

Answer:

A

Explanation:

What was “transformed” in griffiths experiment

Answers

Answer:

Griffith's Experiment was an experiment done in 1928 by Frederick Griffith. It was one of the first experiments showing that bacteria can get DNA through a process called transformation. ... In this experiment, bacteria from the III-S strain were killed by heat, and their remains were added to II-R strain bacteria

Answer: The R bacteria.

Explanation:

In the bacterial transformation experiment, Griffith saw that the R strain of bacteria could be changed, or 'transformed' into S-strain bacteria when they were mixed with dead S-strain bacteria.

Hope this was helpful.
:)

Which statement describes how pioneer species and climax communities are different?

Answers

Primary species have large numbers of offspring, and climax communities contain species that have small numbers of offspring.

Can you list the five layers of Earth's atmosphere?

Answers

Hello!

The Answer is: The troposphere, stratosphere, mesosphere, thermosphere and exosphere.

Thank you for asking this question!

It would be greatly appreciated if you thanked me and marked me as the brainliest!

Have an amazing day.

The mitochondria is known as the “powerhouse of the cell." Why?*
glucose is broken down into cellular energy (ATP).
lipids release energy as they form polypeptide bonds.
glucose is created through the process of photosynthesis.
proteins create energy as they are converted from sugars.

Answers

Answer: I believe the answer is glucose is created through the process of photosynthesis. I am not completely sure, I'm sorry.

Answer:

Explanation:glucose is broken down into cellular energy (ATP).

lipids release energy as they form polypeptide bonds.

glucose is created through the process of photosynthesis.

proteins create energy as they are converted from sugars.

Which organisms should be classified in more than one trophic level?

Answers

A trophies level pertains to the position of an organism in the food chain. Humans are the most dominant organism that belong to more than one trophies level. When we eat plants we become the secondary or the tertiary consumers.

Birds are also organisms that belong to more than one trophies level. When birds eat seeds they become the primary consumer, but when they eat insects they become the secondary or even the tertiary consumers.

I WILL MARK BRAINLIEST!

Answers

Answer:

Nucleus

Explanation:

Nucleus is the most common cell that a animal will have.

Hope this helps:)

Pls mark brainliest

The nucleus

hope this helps you out .

i don’t want the brainliest by the way lol.

Will mark Brainliest! What term refers to crops that mainly protect other crops during their early days?
nurse crops
forage crops
pasture crops
Peas, peanuts, or corn is an example of such crops.

Answers

Answer:

Nurse crops

Explanation:

Which molecules does a cell need from food to make these membrane

Answers

Answer: The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. During digestion, digestible carbohydrates are ultimately broken down into glucose and used to provide energy through metabolic pathways.

Hope this helps...... Stay  safe and have a Merry Christmas!!!!!!!! :D

What level in the hierarchy of life would have many characteristics in common?

Answers

ecosystem and biosphere

HELP ASAP WILL GIVE BRAINLEST Which of these presents an ethical issue associated with genetic testing on humans?


Genetic testing could not cause harmful mutations.


Genetic testing could improve the diagnosis of disease.


Genetic testing could cause discrimination by revealing health risks.


Genetic testing could cause ecosystem damage by creating mutant mosquitos.

Answers

Answer:

i think it could reveal health risks

Explanation:

i hope that is correct!

Genetic testing results in some circumstances could be ambiguous or inconclusive. Detrimental effect on connections with family and friends. Thus, option C is correct.

What are negative impact of genetic testing in humans?

The following are some drawbacks or hazards of genetic testing: Your stress and anxiety may increase throughout testing.

Results in some circumstances could be ambiguous or inconclusive. Detrimental effect on connections with family and friends.

Because the findings of genetic testing can expose information about family members besides the test subject, this causes conflict between families.

Another issue is the potential for genetic discrimination in insurance or the workplace.

Therefore, Genetic testing could cause discrimination by revealing health risks.

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Which of the following is NOT a part of every cell?

A. Cell Membrane

B. DNA

C. Cytoplasm

D.Ribosomes

E. Cell Wall

Answers

Answer:

cytoplasm

Explanation:

I wen through this in 6th grade And It may not be 100% correct but I tried my best to remember.

I will give brainliest to the first person who guess this right.
What is this creature called?
a) Mutant Rabbit
b) Bilby
c) Jack Rabbit
d) Netscheri​

Answers

The creature’s name is a billy
B a bilby an Australian species that became extinct in the 1950s.

What happens when a stationary front passes?

Answers

Answer:

_________

Explanation:

Because a stationary front marks the boundary between two air masses, there are often differences in air temperature and wind on opposite sides of it. The weather is often cloudy along a stationary front, and rain or snow often falls, especially if the front is in an area of low atmospheric pressure.

What are mutations, and how can they affect proteins?

Answers

Answer:

A mutation is a change in a DNA sequence.

A mutation can cause the protein to malfunction or to be missing entirely.

I hope it helps.

Sample Response:

Mutations are permanent changes in the DNA sequence of a gene. Mutations can affect the shape of the protein that is produced. A change in the shape of the protein can affect the function of the protein, which may affect the trait that is seen.


I will give brainliest for the first person who gets it correct

What is the name of the given plant?

A) Hydnellum Pecki
B) Bloodroot
C) Haementhus Coccineus
D) Blood plant
E) Speckled Ruby Fungus

Answers

Answer:

A

Explanation:

all you need is in the photo ​

Answers

It’s z cuz y=mxtb and u solve the parobola and its 11teen

Explain how an evergreen tree stores water during months of little rain.

Answers

Answer:

i think they are orignally from cold areas so they store water and moisture in there needles. and they stay green year round.

Explanation:

HELP ASAP!
Which of the following is true regarding glycolysis ?
Choose 1 answer.
A.) It requires glucose as a reactant.
B.) It produces 36 ATP.
C.) It occurs in the mitochondria.
D.) It is an aerobic process. ​

Answers

Answer:

I would have to say A

Explanation:

Glycolysis is the first step in the breakdown of glucose to extract energy for cellular metabolism. So we already know that it uses glucose because thats what its breaking down. Glycosis produces 2 ATP so B is wrong. Glycolysis happens in the cytoplasm so C is wrong. Finnaly aerobic is using free oxygen in the process of the reaction. However glycolysis uses no oxygen and is  anaerobic.

Glycolysis requires glucose as a reactant.  

Glycolysis refers to a cytoplasmic pathway that dissociates glucose into the three-carbon compound and produces energy in the form of ATP.  

• The process of glycolysis takes place in the cytoplasm.  

• In the process, the net production of 2 ATPs takes place.  

• It can be both anaerobic and aerobic process.  

• The process of glycolysis completes in 10 steps, five of which are in the preparatory phase and the rest 5 are in the pay-off phase.  

• The process of glycolysis is used by all the cells of the body to produce energy, and the final product of glycolysis is pyruvate.  

Thus, correct answer is option A, that is, it requires glucose as a reactant.

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Secretions from the pancreas contain compounds called lipases. Lipases increase the rate of digestion of lipids.
Lipases are an example of which of the following?
• Enzymes
• Simple sugars
Nucleic acids
• Hormones

Answers

Lipases are enzymes that lead to the hydrolysis of lipids.

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