Watson and Crick described the DNA molecule as a
A) single strand
B) branching chain
C) double helix
D) straight chain

Answers

Answer 1
B that is the correct answer

Related Questions

pls help!!
What should be the parents genotype if the frequencies of the alleles in F1 are: BB = 25%; Bb= 50%; bb= 25%?Immersive Reader
(2 Points)

A. Mother: BB - Father: BB

B. Mother: Bb - Father: Bb

C. Mother: bb - Father: BB

D. Mother: BB - Father: bb

Answers

Answer:

B

Explanation:

hope the picture helps you understand it better:)

Here can you help me on this?

Answers

Answer:

Selective breeding

Selective breeding is when u choose 2 organisms with certain desirable characteristics and bread then together

Animals are selectively bread 4 many reasons

- To have a higher yield (meat, milk, eggs)

- Be able to run faster

Which of the following is an example of non Mendelian pattern of inheritance

Answers

Answer:

Genomic imprinting represents yet another example of non-Mendelian inheritance. Just as in conventional inheritance, genes for a given trait are passed down to progeny from both parents. However, these genes are epigenetically marked before transmission, altering their levels of expression.

Answer:

Just as in conventional inheritance, genes for a given trait are passed down to progeny from both parents.

Hope it help  

About how much energy would be transferred to tertiary
consumers if the producers begin with 25,000 kcal?

Answers

Answer:

B. 25 kcal

Explanation:

Blood and water flows a weupe
TON 9
ians do not rely on their lungs alone for breathing in air. They need the skin a
adequate intake of oxygen. Which of the statements below explains the reason
mphibians have only one lung to breathe in air
nly a small amount of air enters the lungs as they breathe.
surface area of the lungs are small compared to other terrestrial vertebrat
surface area of the lungs do not have folds compared to other terrestrial v​

Answers

Answer:

These lungs are primitive and are not as evolved as mammalian lungs. Adult amphibians are lacking or have a reduced diaphragm, so breathing through the lungs is forced. The other means of breathing for amphibians is diffusion across the skin. To aid this diffusion, amphibian skin must remain moist.

Two common respiratory organs of invertebrates are trachea and gills. Diffusion lungs, as contrasted with ventilation lungs of vertebrates, are confined to small animals, such as pulmonate snails and scorpions.

Explanation:

Amphibians utilize gills for breathing early in life, and develop primitive lungs in their adult life; additionally, they are able to breathe through their skin.

The table below shows the use of some energy production methods over time.


Type of energy Average energy used annually in the past (in million tons) Average energy used annually at present (in million tons) Average energy most likely to be used annually in the future (in million tons)
Oil 200 4000 300
Gas 100 2500 700
Coal 1000 2500 1500
Wind 0.1 50 2000
Hydropower 0.7 60 150
Tidal power 0.02 50 500

Based on the table, which of these statements best describes the impact of different methods of energy production on the environment in present times?
Wind energy may be altering all shorelines on Earth.

Hydropower may be altering all shorelines on Earth.

Tidal power may not be contributing significantly to climate change.

Coal energy may not be contributing significantly to climate change.(Not this)

Answers

Answer:

I think its hydropower

Explanation:

Why is the temperature at the extremities, such as the fingers,
sometimes colder than the core body temperature?
O A. So that less energy is lost in cold environments.
OB. The fingers need to be colder to protect the durability of the nails.
C. The fingers do not have thermoregulation mechanisms.
D. So that more energy is lost in cold environments.

Answers

Answer:

A. so that less energy is lost in cold environments.

Explanation:

When it’s cold outside, your body makes sure to keep the blood flowing to your core and vital organs to keep them warm. This can change the amount of blood flow to your hands and feet, making them feel cold. This is normal. The blood vessels in your hands and feet constrict (spasm) when it’s cold, to prevent heat loss from your core

Compared to the offspring of sexual reproduction in animals, the
þffspring of asexual reproduction will
A) show greater variety
B) be more resistant to disease
C) be genetically identical to the parent
D) grow larger

Answers

Answer:

C: Genetically identical.

Explanation:

Offspring are usually going to look like it's parents. Asexuals produce offspring that's supposed to look like them. I hope this helps :) and if it's wrong please know that I am very sorry for the mistake :(

How do you determine whether a nutritional claim or product is too good to be true?

Answers

Nutrition gov is a USDA-sponsored website that offers credible information to help you make healthful eating choices. It serves as a gateway to reliable information on nutrition, healthy eating, physical activity, and food safety for consumers.

how was the state of the ecosystem before the wolves were introduced?

Answers

hi !

Explanation:

when wolves were reintroduced , the research has shown that in many places they have helped revitalize and restore ecosystems. They improved the habitat and increase populations of countless species from birds of prey to pronghorn, and even trout.

Help me guys!!!!!
!!!
!!

Answers

Answer:

The sampling method would be the job industry. For example the people who work in health care would have a higher risk of getting infected

Explanation:

What happens to the equilibrium when sodium hydroxide is added to ammonia

Answers

Answer: you add Sodium Hydroxide you will cause Equilibrium to shift to the left. The effect will be to force NH3 out of the solution and back to gas form

Which of the following is defined as a community interacting with its environment

Answers

Answer:

• ecosystem. A community interacting with its physical environment through the transfer of energy and materials

Explanation:

brainliest pls

Target
37.16) A
is a substance that speeds up a chemical reaction without being used up in the reaction.
reactant
lamino
product
catalyst
molecule

Answers

Answer:

catalyst

Explanation:

only one make sense

Brainliest pls pls pls

using appropriate example,discuss two advantages of motility in bacteria​

Answers

Answer:

- avoidance of toxic substances.

- increased efficiency of nutrient acquisition.

Why does sexual reproduction increase the genetic variation in a species

Answers

Answer:

Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. ... So in order to form a new organism, two gametes -- the sex cells, sperm and egg -- must fuse, further mixing the genes to produce more genetic diversity.

please help very easy 5th grade work giving brainliest

Answers

Answer:

The answer is A because it erodes rocks away over time

Explanation:

A

Some blackcaps that migrate to the United Kingdom have become distinguishable by certain physical and behavioral traits from blackcaps that migrate to Spain. What best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter?

Answers

Answer:

Increases.

Explanation:

There is a good effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter because there is more food available for the blackcap bird which automatically increase the population of the bird. Food is the main factor that contributes in the increase or decrease population of blackcap in the United Kingdom and prevent the removal of this bird in that environment.

Name one way the male and female endocrine systems are different.

Answers

Hormones represent what makes females different from males. Generally, females and males have the same hormones (i.e., estrogens, progesterone, and testosterone), but their production sites, their blood concentrations, and their interactions with different organs, systems, and apparatus are different

Answer:

Men produce more testoterone and women produce more estrogen.

Explanation:

While both men and women produce testoterone and estrogen, men have higher concentrations of testoterone and women have higher concentrations of estrogen.

Why must living organisms reproduce?

Answers

Answer:

reproduction it's important for the survival of all living organisms

Answer:

Reproduction is necessary for the continuation of the generation of particular species rather than the species extinct from the earth. It is also a source of recombination.

Explanation:

Complete each sentence regarding the bones of the lower extremity. Then place the sentences in order, based on the bones, from proximal to distal .
tarsals
15
14
6
humerus
5
patella
femur
phalanges
tibia
7
8
fibula
metatarsals
i. There are 2 bones in the lower leg. The________ is more medial, and the________ is more lateral
ii. There are________ small bones of the toes that are called the__________
iii. There are ________irregular shaped bones in the foot known as the _________
iv. The ________is also known knee cap
v. There are __________small, long bones found in the top of the foot called _________
vi. The __________is found in the thigh .

Answers

i. There are 2 bones in the lower leg. The fibula is more lateral and the tibia is more medial.

ii. There are 5 small, long bones present in the top of the foot that are metatarsals.

iii. There are 7 irregular-shaped bones in the foot known as the tarsals.

iv. The patella is also called a knee cap.

v. There are 14 small bones of the toes that are called the phalanges.

vi. The femur is present in the thigh.

A population age structure in which the birthrate is high A population age structure in which the birth rate is high and the population is mainly young would be best
represented by a graph with a/an -shaped curve.
O bell
O urn
O pyramid
O S
O J

Answers

Answer:

pyrimid

Explanation:

21. What determines the kind of genes an organism
possesses?

Answers

Answer:

The kind of genes an organism possesses is determined by the order of the nucleotide bases in the organism's DNA.

Answer:

The kind of genes an organism possesses is determined by the order of the nucleotide bases in the organism's DNA. ... The order of bases as you go down the rungs of the ladder determine what genes an organism will have, and therefore, what traits it will have.

Explanation:

Fun facts:

Genes carry the information that determines your traits which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes. ... And chromosomes are found inside cells. Your body is made of billions of cells.

Help! My cat has done this 3 times. She falls over, starts kicking her leg, and biting it or biting her tail. She usually doesn’t do this! What’s wrong with her???

Answers

this pet needs to be taken to the vet ASAP

helppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

1. a

2. b

3. b

4. c

Explanation:

Why is quality control important for forensic DNA labs?
Question 2 options:

1)

Establishes methods for maintaining the quality of its product

2)

It means that the lab cannot produce bad results

3)

Avoids presenting errors in court

4)

Keeps bad or unskilled DNA analysts from testifying

Answers

Answer:

3). avoid presentation errors in court

Explanation:

hope it helps thanks ❤

Which nutrient, identified in the 2010 Dietary Guidelines for Americans, is considered "a nutrient of concern"?

Answers

potassium is considered a nutrient of concern

Which of the following statements best explains the hypothesis that the development of sexual reproduction has resulted in acceleration of the rate of evolution?
(A) Mutations are more likely to occur in spermatogenesis and oogenesis than in mitotically dividing cells.
(B) Sexual reproduction results in more offspring than does asexual reproduction.
(C) Those members of a species that are best adapted to their environment are most likely to be successful in sexual reproduction.
(D) Mutations usually do not occur in the production of spores or in cells dividing by fission.
(E) Sexual reproduction is more likely to result in genetic recombination than is asexual reproduction.

Answers

Answer:

c

Explanation:

- How do acidic and alkaline environments affect the growth and survival of bacterial?

Answers

Answer:

Usually, the catalytic properties of the enzymes are lost and metabolism is halted. Most bacteria grow best around neutral pH values (6.5 - 7.0), but some thrive in very acid conditions and some can even tolerate a pH as low as 1.0. Such acid loving microbes are called acidophiles.

which of the following makes its gravitational pull increase ?

Answers

Answer: The mass decreases

Explanation:

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examples of metal non-metal and semi metal Copper metal has a specific heat of 0.385 J/g.C. calculate the amount of heat required to raise the temperature of 22.8g of copper metal from 20.0C to 875C 25+ POINTS WILL MARK BRAINLIEST Which of the following describes most of the participants in the New YorkCity draft riots of 1863?A. Freed slaves who wanted the right to claim lost propertyB. Middle-class women who wanted the right to vote against thedraftC. Indentured servants who opposed the laws of their servitudeD. Working-class white men who opposed being forced to go to war Question 15 of 43A bag of marbles has 12 red, 7 yellow, 5 blue and 1 white. Find the probabilityof selecting 4 marbles from the bag where all 4 are red.9A.oB.1C.75900oD. Marley, age 70 and head of household (unmarried), had income of $37,000 and exclusions of $500. Marley had adjustments/deductions for AGI of $2,500, and his itemized deductions for the year totaled $21,000. Marley had a QBI deduction of $1,000. Marley is entitled to a tax credit of $2,000. Marley is deaf. What is Marleys taxable income which are examples of an expository writing style? select three options AP Psychology---Conformity and obedience are two powerful factors that change peoples behaviors in group situations. Describe the factors that increase both conformity and obedience. What are the implications of these factors? Write at least a full sentence addressing each question. What is the central conflict of Amigo Brothers? what is the equation that matches this table? Help please, solve and explain Is lotion pure or impure? Find out what the contractile vacuole in a Paramecium does and whycan someone help me please? please help thank you i will give brainliest for the first correct answer job speciaization, advanced cities and technology, and complex social institutions are all charactistics of which of the following Marcus is taking advanced placement chemistry in high school because he loves science and is fascinated by chemistry experimentation. Wade is taking advanced placement chemistry because his guidance counselor told him he had to if he intended to apply to a pre-med program at a competitive university. Marcus is motivated by _____, while Wade is motivated by _____. Suppose the Earth were squeezed down to the size of a small mountain. The mass of the Earth would not change, just its volume and radius. If you were now standing on the surface, would the gravitational force on you be greater than, less than or the same as before the Earth was squeezed? Find A^c U B if sample space S = {1 to 20}, A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, and B = {2, 4, 6, 8, 7, 10, 12, 14, 16, 18} why Hydroxide ion is less strong base than hydride ion The volume of the cylinder