What holds the two strands of the DNA double helix together?

A.Weak hydrogen bonds
B. Strong hydrogen bonds
C. Weak covalent bonds
D. Strong covalent bond

Answers

Answer 1

Answer:

B.Strong hydrogen bonds

Explanation:

The deoxyribonucleic acid (DNA) molecule consists of two chains or strands of nucleotides that are held together in a double helix by hydrogen bonds between the bases of the nucleotides.


Related Questions

Can someone tell me what this is?? I’m pretty sure it’s not petrified wood, and it’s definitely not bismuth.

Answers

Can I please have a brainilest.

And..Socratic can help! This learning app, powered by Google AI, helps you understand your school work at a high school and university level. Ask Socratic a question and the app will find the best online resources for you to learn the concepts.

Which of the following molecules are products of glycolysis? Select all that apply.
2 ADP molecules
2 NADH molecules
1 pyruvate molecule
4 ATP molecules
4 ADP molecules

Answers

2 NADH molecules is the only right answer

Glycolysis produces 2 NADH, 2 ATP, and 2 Pyruvate molecules.

Glycolysis is the process that is described as an oxidative pathway that typically breaks down the monosaccharides including galactose and glucose molecules and is further involved in the transformation of the energy released into chemical energy which can be used by cells. The products obtained from the glycolysis are:

2 ATP which is generated via substrate-level phosphorylation2 NADH as a result of reaction named redox reactions2 pyruvate molecules

Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.

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About how many cells make up the human body?

Answers

Answer:

deeevw ervewfwe wvf

Explanation:

Which two structures produce energy that cells can
use?
O A and B
OB and C
O Cand D
O D and A

Answers

Answer:

According to the plant cell scheme, the two structures that produce energy that cells can use are D, which corresponds to mitochondria, and A, which is a chloroplast, so the answer is D and A (fourth option).

Explanation:

In the plant cell —unlike the animal cell— there are organelles called chloroplasts, responsible for converting light energy from the sun into chemical energy. In addition, there are mitochondria, which also provide useful energy to the cell.

In the chloroplast, photosynthesis takes place, a process that during the light phase produces ATP and NADPH⁺ from solar energy. In the mitochondria, energy in the form of ATP is obtained from glucose, due to oxidative phosphorylation and the electron transport chain.

The organelles indicated in the diagram are mitochondria (A) and chloroplast (D), both responsible for producing energy for the plant cell.

Answer: D and A

Explanation:

___ code in DNA from nucleus to ___.

Answers

Answer:

i dont understand your question, please make it clearer

Explanation:

Which of the following has a greater gravitational pull on the Earth?
1000 kilogram hippopotamus

100 kilogram human

1 kilogram cat

0.1 kilogram mouse

Answers

Answer:

a

Explanation:

A. 1000 kg hippo


Since it has a greater mass it will have a greater gravitational pull.

Need help Plz!!!!

Choose ONE of the three writing assignments below and write a 4-6 sentence letter. Use science vocabulary, full sentences, proper grammar and details that show your understanding.


An 8th grader writing to a scientist telling them what they know about bacteria and asking more questions.


A harmful bacteria writing to a good bacteria telling them how they hurt humans and why they’re cooler.


A teacher writing to a confused student about the differences between bacteria and other life forms.

Answers

A teacher writing to a confused student.

bacteria are microscopic (very tiny) organisms that are unicellular (made up of a single cell). One fundamental difference is that bacterial cells lack intracellular organelles, such as mitochondria, chloroplasts, and a nucleus, which are present in both animal cells and plant cells.

what do chromosomes store?

Answers

Answer:

A chromosome is a single, long molecule of DNA. These highly organized structures store genetic information in living organisms. Small sections of the chromosome, called genes, code for the RNA and protein molecules required by an organism.

I NEED HELP!!

In 1851, Gregor Mendel, a young monk in Europe, formed the foundation of genetics by using pea plants. In one of his experiments, Mendel crossed yellow pea seeds with green pea seeds. Much to Mendel’s surprise, all of the offspring were yellow peas.

Which of the following statements explains Mendel’s results?

A.When the two peas were crossed, the offspring received genes from both parent plants, but the genotype for yellow seed color was dominant over green seed color.

B.When the two peas were crossed, the offspring received genes from both parent plants; the phenotype for yellow peas was dominant over green pea color, which caused all the offspring to have yellow seed color.

C.When the two peas were crossed, the offspring only received the genes from the parent plant which had the genotype for yellow seed color.

B.When the two peas were crossed, the offspring only received genes from the parent plant with the phenotype for yellow seed color, which caused all the offspring to be yellow.

Answers

Answer:

It's A

Explanation: They both have gene for both of the color but the yellow pea seed gene or whatever is dominant.

The statement that best explains Mendel’s results is when the two peas were crossed, the offspring received genes from both parent plants, but the genotype for yellow seed color was dominant over green seed color. The correct option is A.

What is Mendel's law?

Gregor Mendel was a scientist and botanist, and he experiments on pea plants and discovered three laws that are very helpful in genetics.

Mendel's law of segregation, "during gamete formation, every gene segregates from each other so that each gamete conveys only one allele for each gene." The second law of inheritance is the law of segregation.

Mendel's 2nd law of inheritance is also known as the law of independent assortment of genes.

It states that each character behaves as a separate unit and is inherited independently of any other character.

Therefore, the correct option is A.

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what is the biodiversity score of farmland (maize)?

Answers

Answer:

Required Answer:-

The intensification of agriculture has caused dramatic declines in farmland biodiversity (Carvalheiro et al., 2013; Senapathi et al., 2015). Since the 1990s, agricultural policies have been developed in Europe to mitigate this loss through agri-environmental schemes (AES). One AES is “sown wildflower strips”, the aim of which is to create new ecological infrastructures by sowing attractive wild flowers on arable land (a few % of the cultivated area). These ecological infrastructures fall within our definition of MIMS since they represent a massive introduction of managed species in the landscape.

How many different elements are represented in the chemical formula?
CH4 + 202 → CO2 + 2H2O
A.7
B. 5
C.4
D.0.3​

Answers

The correct answer is b.6

What type of movement across a membrane has the cell membrane dip in and form a vesicle of solid food items to bring into the cell?

a. Exocytosis
b. Phagocytosis
c. Pinocytosis
d. Facilitated Diffusion​

Answers

Answer:

B

Explanation:

Phagocytosis is the intake of food/particles/bacteria from a cell's exterior.

An interaction in which one organism captures and feeds on another organism is called
a competition
C mutualism
b. symbiosis,
d predation

Answers

I’m sure it’s predation
D. Predation

A predator hunts its prey and comsumes it :)

4. Why are coral reefs only found in tropical water? *
(1 Point)
They need cold water with little sun
They need deep water and humid temperatures
They require shallow waters where the sun can reach them

Answers

They require shallow waters where the sun can reach them!

Answer:

They require shallow water where the sun can reach them.

which gender has a higher heart rate?

Answers

Answer:

Females

Explanation:

The average adult male heart rate is between 70 and 72 beats per minute, while the average for adult women is between 78 and 82 beats. This difference is largely accounted for by the size of the heart, which is typically smaller in females than males. :)

is golgi apparatus a plant or animal cell?​

Answers

Answer:

it's actually found in both plant and animal cells.

Explanation:

A major function of the golgi apparatus is the modifying, sorting and packaging of proteins for secretion. It is also involved in the transport of lipids around the cell, and the creation of lysosomes.

hope it helps hun :)

The Golgi apparatus is found in both plant and animal cell as it is one of membrane-bound organelle in all eukaryotes.

A Golgi body or Golgi apparatus is one of cell organelle that process and package proteins and lipid molecules, especially proteins exported from the cell to various destinations such as lysosomes, or secretion. In addition, the plasma membrane and

glycolipids and sphingomyelin are synthesized within the Golgi.found in eukaryotes onlyis a factory and transport vehicle for different molecules.found in all plant and animal cellspresent near the endoplasmic reticulum.

Thus, the correct answer is - present in both plant and animal cell as it is one of membrane-bound organelle in all eukaryotes.

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write a food chain from this food wed with six tropic levels

Answers

Answer:

Pri mary Prod ucers

Prim ary Con sumers

Secondary Consum ers

Te rtiary Consumers

Ap ex Pred ators

Trophic casc ade?

(i put lines because it says that i'm using "inappropriate" words.)

what is sexual reproduction​

Answers

Answer:

the production of new living organisms by combining genetic information from two individuals of different types (sexes). In most higher organisms, one sex (male) produces a small motile gamete which travels to fuse with a larger stationary gamete produced by the other (female).

Answer:

I think this answers you help u

Advancements in which held have increased the ability to store increasing amounts of data on electronic devices?

social skills

driving skills

technology

biology

Answers

Answer:

Technology

Explanation:

As technology gets better, the density with which you can pack devices with transistors, or other methods of data storage has rapidly increased. Hope this helps!

Answer:

C

Explanation:

Celula Conjunto de células especializadas que tienen una forma similar y una actividad determinada Conjunto de organos que trabajan de forma integrada y cumplen una función especifica en el organismo. Nivel de mayor complejidad. Constituido por sistemas, que realizan sus funciones en forma coordinada Estructura formada por diferentes tipos de tejidos, que coordinan sus funciones para realizar una tarea especifica Unidad básica de todos los organismos Sistema Tejido Organismo Organo

Answers

Answer:

Célula: Unidad básica de todos los organismos

Tejido: Conjunto de células especializadas que tienen una forma similar y una actividad determinada

Órgano: Estructura formada por diferentes tipos de tejidos, que coordinan sus funciones para realizar una tarea especifica

Sistema: Conjunto de órganos que trabajan de forma integrada y cumplen una función especifica en el organismo.

Organismo: Nivel de mayor complejidad. Constituido por sistemas, que realizan sus funciones en forma coordinada

Explanation:

Los organismos pueden ser unicelulares o pluricelulares. Estos últimos tiene muchas células, lo que hace que tengan estructuras mucho más complejas. En ellos hay distintos niveles de organización celular. Se le llama así porque es la célula la unidad básica de absolutamente todos los organismos. En el segundo nivel encontramos los tejidos, en el tercer lugar los órganos, luego en el cuarto nivel los sistemas y por último todos ellos constituyen un organismo, que es el quinto nivel de organización celular.

A su vez, cada uno de estos elementos mencionados en los distintos niveles de organización celular tienen sus propias características y funciones que hacen que se puedan clasificar y dividir en distintos tipos.

Dogs have 39 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each dog cell? 19 19.5 23 39 46

Answers

Answer:

39

Explanation:

Answer:

39

Explanation:

The cells copy themselves so there is one original and one new. We only count the new so it is still 39.

Has anyone done aqa a level biological molecules exampro exam paper

Answers

Answer:

No sorry

Explanation:

What important gas do we take in when we breathe

Answers

Answer:

oxygen

Explanation:

we breath in oxygen and release carbon dioxide

hope this helps :)

2. What is the complementary DNA sequence for the following DNA strands? Write the sequence of the complementary strand below the sequence
given to you.
CGTATC
CTTTCAAG
GAGACTTAC

Answers

Answer:

CGTATC - DNA complementary strand- GCATG

CTTTCAAG- DNA complementary strand-GAAAGTTG

GAGACTTAC-DNA complementary strand-CTCTGAATG

Explanation:

Remember that the complementary sequence will be based on base pairing for DNA, so the A will pair with T, C with G

Question 6
Why did the plate boundary that runs up California change from convergent to transform?

Answers

Explanation:

The most recent period of the Cenozoic is the Quaternary, which began about 2.6 million years ago. The most recent epoch is the Holocene, which began around 12,000 years ago. Go back to the concept on human evolution in the chapter Life History to figure out what events mark the beginning of these time periods.

Meiosis is a process of Cell division in which the number of chromosomes per cell is cut in __________ and homologous chromosomes in a ___________ cell are separated. Meiosis involves two distinct stages: meiosis I and ___________. One diploid (full # of chromosomes) cell becomes ____haploid (half # of chromosomes) daughter cells.

Answers

Answer:

Explanation: This process is called mitosis. However, parental gametes – the sperm and egg cells – are unique from all other cells in that they reproduce through a process called meiosis.  The purpose of meiosis is to shuffle genetic information and cut the cellular chromosome number in half, from 46 chromosomes to 23 chromosomes.  In this way, when an egg and sperm cell combine during fertilization, the resulting embryo will inherit the appropriate amount of unique genetic information from each parent.tion:

should a business owner be more interested in making money or doing what they are passionate about?why?​

Answers

Answer:

passion

Explanation:

a business owner should be interested in doing what they are passionate about because if they like something they will make more money and more customers will be attracted to their new project

If 100 mice are bred, how many red eyed white mice would you expect?

Answers

Answer:

6

Explanation:

In this scenario, black fur (F) is dominant to white fur (f) and black eyes (E) are dominant to red eyes (e). So in this case you would be looking for all lowercase letters in the punnet square, which would only be 1 mouse with white fur and red eyes (ff ee), and since there are 16 potential genotypes for offspring and only 1 that would be white with red eyes, you would divide 1 by 16 and get 0.0625, then you would multiply 0.0625 by 100 (total number of mice) and you would get 6.25. since you can't really have .25 of a mouse (that would be kind of gross) you round down and get 6, the closest answer.

(Also I just took this quiz and got this question right. Just wanted to confirm that in case you had any doubts!)

Hope this helped!

What are cell biology, genetics, and
molecular biology?

Answers

Answer:

Explanation:

Cell biology (also cellular biology or cytology) is a branch of biology studying the structure and function of the cell, also known as the basic unit of life. Cell biology encompasses both prokaryotic and eukaryotic cells and can be divided into many sub-topics which may include the study of cell metabolism, cell communication, cell cycle, biochemistry, and cell composition.

Genetics, study of heredity in general and of genes in particular. Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, medicine, and biotechnology. Learn more about the history, biology, areas of study, and methods of genetics.

Molecular biology, field of science concerned with studying the chemical structures and processes of biological phenomena involving molecules. In particular, researchers focus on DNA, RNA, and proteins and their interactions. As a result, the field is closely related to genetics and biochemistry

The study of heredity is a field of genetics and cell biology. The DNA itself (molecular genetics), entire populations, or whole creatures are investigated at various levels of genetics (population and evolutionary genetics).

What relation between cell biology and molecular biology?

Two branches of biology are cell biology and molecular biology. The study of cellular mechanisms is a focus of the subject of cell biology.

As a result, it primarily concerns the functions and architecture of the cell. The study of molecular level mechanisms is a focus of the science of molecular biology.

Therefore, cell biology, genetics, and molecular biology are interconnected.

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WILL GIVE BRAINLIEST!!!!!

If you put a raisin in water, which way will the water move?

Answers

Answer:

the water will move into the raisin because the raisin doesn't have a high water concentration and the water is looking for somewhere less dense it can go.

Explanation:

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A service club has 64 male members and 16 female members. Which statement is true?A.There are 2 female members for every male member in the service club.B.There are 2 male members for every female member in the service club.C.There are 4 female members for every male member in the service club.D.There are 4 male members for every female member in the service club. 4. There were 2000 students at the university.After some students graduated, there were1600 students remaining. By what percent didthe number of students at the universitydecrease? Perhaps you heard the names illinois, delaware, or miami before. Where else have you heard these tribal names?What can you infer about the connections between these tribes that have been named after them?PLEASE IM SO CONFUZED WHHDDHDYDUSUSH Alaina went to Applebees for dinner with some friends. The bill came to $87.43 but one of her friends had a 12% off coupon. How much did they save with the coupon? CAN SOMEONE HELP!!!!! Find the word that acts as either a predicate noun or predicate adjective in the sentence. Then tell which of the two it is.Your work is almost always neat. The sentence to the left, the word___ is a predicate___.A.is A.nounB.work B.adjectiveC.neatD.veryE.always Explain at least three ways in which a mutation in an individual's DNA could occur, and describe at least 2 effects a mutation could have on an individual's traits what can you infer about what Nellie Bly is like as a reporter and a person?write a reponse in which you describe Nellie based on what you learn about her from the passage, John Wilkes Booth's assassination plan was for more than Lincoln. Check the other men that his plan included. Classify the following triangle by its side lengths: HELP PLSSWhat is the slope of the line that passes through the points (-2, -5) and (6, 7)? How many solutions does the equation below have?2x7+19=6x4x+12A.Infinitely many solutionsB.No solutionC.1 solutionD.2 solutions What 10 x 13x 5 x6 x8 x9 x9 x0 Marit Brunsell deposited $50,000 at Bank of America at 8% interest compound quarterly. What is the effective rate (APY) to the nearest hundredth percent? Please write a cer for this Question: What do you believe was the biggest hardship for Native Americans due to the enactment of The Dawes Act? How did American soldiers react to the liberation of concentration camps? Return-from-trap instruction returns into the calling user program while simultaneously reducing the privilege level back to ________ Select one: a. User mode b. Kernel mode c. OS mode d. CPU mode Solve for x in the equation4*+2=1 The vertices of a rectangle are R(5, 5), S(1, 5), T(1, 1), and U(5, 1). After translation, R' is the point (11, 11). Find the translation rule and coordinates of U'. Little Billy lay down in his racecar-shaped bed and tried to sleep. Suddenly, the shutters of his window began to rattle and the knob of his bedroom door started twitching. Billy sat up. The door flew open and the ghost of the house's previous owner floated in, his clothing in rags, his face covered in scars, his shoulders hunched from the many chains draped over his torso. "I must have vengeance!" the ghost declared. "Well, go have vengeance somewhere else tonight," said Billy, as he sighed. "I have school tomorrow." He plopped back down, covered up, and went to sleep. Which statement best explains how the plot of the story helps develop the main character?