Which statement is true about DNA base pairing rules?
A- cytosine can pair with guanine only
B- adenine can pair with cytosine only
C- Adenine can pair with thymine or cytosine
D- cytosine can pair with Adenine or guanine

Answers

Answer 1
Answer is A - Cytosine can pair with guanine only.


It would not be the others because:
Base pairs are A and T/U, C and G.

B) Adenine does not pair with cytosine.
C) Adenine can pair with thymine, however it does not pair with cytosine.
D) Cytosine can pair with guanine, but does not pair with adenine.

Related Questions

15 facts about the nucleus
GIVING BRAINLY!!

Answers

your a complete diputs head are you thats so easy bro

1.Cell Nucleus is considered to be the brain of a cell
2. the cell nucleus is the largest organelle of the cell and holds approximately 2 meters of DNA
3. The nucleus has a double membrane (the nuclear envelope) around it.
4. The nucleus contains chromosomes which are made of DNA and associated proteins called histones.
5. The nucleus contains genes that hold the information needed to make proteins.
6. The nucleus is not always in the center of the cell.
7. The DNA is also used to control gene expression through a process called transcription, where a DNA template is used to produce pre-mRNA.
8. DNA and RNA are found in the nucleus.
9. The nucleus also stores proteins and ribonucleic acid (RNA) in the nucleolus.
10. The starting point of protein synthesis which is called transcription begins in the nucleus.
11. It usually takes up about 10 percent of the cell's volume.
12. Each human cell (nucleus) contains around 6 feet of DNA which is tightly packed, but very organized with proteins.
13. The size of the Cell Nucleus can vary from one organism to another.

I ran out of time but here you go!

help anyone i will mark you brainliest so pls...

Answers

Answer:

Purpose of ecosystems

Explanation:

PLEASE I HAVE UNDER 30 MINUTES!!! (No links)
[botany] Boll Weevils are an invasive species that has developed resistance to many major pesticides. Evaluate how
this influences the Boll Weevils' success and the options that can be used to control them.

Answers

Answer:

boll weevills succes is greatly dependent on its ability to adapt and invade homes this way they are able to live in sheltered areas made by humans and the humans can't get rid of them. a potential way to get rid of them is to find a poison that they'll take for food and that will surely kill them and not just maybe.

Where, in terms of an ellipse, is the Sun located with respect to the orbit of each planet? Which
one of Kepler's Laws does your answer support?

Answers

Answer:

focus

The Sun is at one focus. The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit. Kepler's Second Law: the imaginary line joining a planet and the Sun sweeps equal areas of space during equal time intervals as the planet orbits.

In DNA G pairs with C creating a __________ bond *
no
single
double
triple

Answers

Answer:

Triple

Explanation:

Because when guanine pairs with cytodine they form 3 hydrogen bonds

Below is an image of a family tree (first generation) showing a group of mice. A dark gray mouse and a white mouse had four offspring, some had white fur, while others had dark gray fur. Use the image below to help you answer the following questions. Which of the following descriptions about the parents is most likely true?

A Their gene combinations for the fur color trait are the same.

B Their gene combinations for the fur color trait are different.

C Their gene combinations for the fur color trait depend solely on the environment.

D Their gene combinations for the fur color trait do not affect their offspring. ​

Answers

Answer:

I believe the answer is B.

What do lung cancer And emphysema have in common

Answers

Answer:

While emphysema and lung cancer are two different conditions, they do share some associations and share the main risk factor for both which is cigarette smoking. Both can lead to immune system malfunction, inflammation, and cell damage which play a role in the development of the two diseases. so they both be come from the cause of smoking

Explanation:

Answer:

Both are caused by smoking.

Explanation:

A scientist fills a glass container with water and places an aquatic plant inside the container, then closes the lid and places the
container in direct sunlight. The scientist observes small bubbles on the surfaces of the plant's leaves on days 1 and 2, but no
bubbles on day 3. The scientist concludes that the bubbles were caused by photosynthesis. Which substance should be
added to the water in order for the bubbles to reappear? (1 point)

Answers

Answer: Are there any options? you either add C02 because it has run out gas or you and in minerals that also contain C02.

Explanation: you need C02 to have photosynthesis, so with a closed off lid,  the gas is going to eventually run out.

Carbon dioxide should be added to the water in the container in order for the bubbles to reappear in the glass container while placed in sunlight. Carbon dioxide is a component of photosynthesis.

What is Photosynthesis?

Photosynthesis is the process by which plants prepare their own food in sunlight and in the presence of carbon dioxide gas. Photosynthesis process takes place in the chloroplast of cells.

Photosynthesis is an anabolic reaction in which carbon dioxide and water reacts in the presence of sunlight which is trapped by the chlorophyll present in the leaves of plant to produce glucose (carbohydrate) and oxygen gas, which is later utilized in the process of respiration.

Learn more about Photosynthesis here:

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When a dark blue fish and a light blue fish with dark blue fins were mated , all offspring became dark blue. What could also be seen was that part of the offspring got light gray fins.Explain with the help of genetics why all fish turn dark blue.

Answers

Answer:

The allele for dark blue fish must be dominant and the dark blue parent fish must be homo-zygous dominant;

This would mean the dominant allele would necessarily be inherited by all offspring and since it is dominant, it would be expressed over the other allele (light blue fish)

Which gene determines what letter is used to represent a pair of traits?

Answers

Answer:

The dominant gene determines what letter is used to represent a pair of letters.

Explanation:

Example: If brown eyes are dominant (B) and blue eyes are recessive (b) then...

BB means: Brown

Bb: still means brown because there is still a dominant gene

bB: still means brown because there is still a dominant gene

bb: means blue, no dominant gene

Hope this helps!

What effect does increase salinity have on the density of water?

1. No affect unless temperature also changes

2. Decreases density

3. Increases density

Answers

Answer:

3

Explanation:

For example,The density of seawater depends on the content of salt. It is known that the density of salt is 2.165g/cm3, so the more salt, the greater the density of mixed liquid.

Answer:If you know that dissolution of salt only marginally affects the volume of the solution, how would you expect the density to evolve? It should reasonably increase.

Explanation:

at a given temperature, Should salts be dissolved in the water, and the volume remains reasonably constant, the density

. A solute binds water molecules around itself in a coordination sphere, and should a salt be dissolved, both anion and cation must be solvated; hence an increase in solution density with respect to water.

A mixture that has the same composition throughout is called a(n)

Answers

Answer:

Homogeneous Mixture

Explanation:

They are mixed

what percent of us energy comes from nonrenewable energy sources

Answers

Answer:

85 percent

Explanation:


80. An atom is to a molecule, as a
to a cell
A. an organism
B. an organ
C. a tissue
D. an organelle

Answers

Answer: C. a tissue

Explanation:

The answer is C, a tissue


Potassium nitrate forms potassium oxide,
nitrogen, and oxygen in certain fireworks.
4KNO3 → 26,0 + 2N2 + 502
This reaction is classified as a
A. combustion reaction.
B. decomposition reaction.
C. single-replacement reaction.
D. synthesis reaction.

Answers

Answer:

A. combustion reaction.

Explanation:

If you light a firework there's more than just a single reaction

Answer:

A. combustion reaction.

Explanation:

Fireworks explode, or combust in the air. Logicly I would classify this as an combustion reaction.

sensory transduction in the auditory system is much like transduction of __________.

Answers

Answer:

mechanosensory stimuli.

Explanation:

Carbon forms the basis of all of the following compounds except___?

A. Metals
B. Sugars
C. Fats
D. Nucleic acids

Answers

A. Metals

Metals do not have a basis of carbon

Answer:

A)

Explanation:

1. c) carbohydrates

2. d) fatty acids

3. c) nucleic acids

4. a) monosaccharides

the bold word is a tip but your answer is A

Which characteristics would be present in an air mass that develops over the Canadian Plains near the Arctic Circle?

Answers

la verdad no se la repuesta si me la hubiera sabido si te la hubiera dicho

can someone please give me the answer i don't know which one it is?

Answers

Answer:

Sea levels near the arctic rise

Explanation:

What is the defination for monocots and it's characteristics?

Answers

Explanation:

Definition of monocot

: a chiefly herbaceous angiospermous plant (such as a grass, lily, or palm) having an embryo with a single cotyledon, usually parallel-veined leaves, and floral organs arranged in multiples of three : monocotyledon Monocots account for a quarter of all flowering plants.

WILL GIVE BRAINLIEST IF CORRECT PLEASE I NEED HELP!

Answers

Answer:

CBADE

Explanation:

The fault has an intrusion (D), and the oldest layers are on the bottom.

what is the name given to a virus that attacks a bacterium?

Answers

Bacteriophage, which are also referred to as simply “phage” or a bacterial virus

a. Find out reasons for similarity and dissimilarity
b. Which types of reproduction are followed in sugar cane plant and in mango tree?

Answers

Sugar cane plant reproduce asexually whereas mango can reproduce by both asexually and sexually.

Sugar cane is usually reproduce by using asexual reproduction i.e. by the use of pieces of stem of sugar cane called setts that contain at least one node. It is necessary that these cuttings contain a node because when they are placed and covered in the ground, primary roots arise from these nodes.

While on the other hand, the mango trees can be propagated both by sexual and asexual reproduction. Sexual reproduction involves the fusion of male and female sex cells during flowering stage. Grafting, Cutting, Layering and Budding are the asexual means for the propagation of mango tree.

Among these the grafting technique is considered as the most suitable method of vegetative propagation of mango so we can conclude that sugar cane plant reproduce asexually whereas mango can reproduce by both asexually and sexually.

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What is the term used to identify a molecule responsible for reducing the amount of
energy needed for chemical reactions to happen?

Answers

An enzyme. An enzyme is a protein speed up a biochemical reaction. It’s a catalyst.

Hope this helps :)

Answer:

The process of speeding up a reaction by reducing its activation energy is known as catalysis, and the factor that's added to lower the activation energy is called a catalyst.

Explanation:

I hope this helps

What is the building unit that enters the plant cell organelle membranes?
A -fatty acids
b -ribose sugar
c -simple lipids
d -nucleic acids

Answers

Answer:

It's b ribosome sugar

Mark as brainliest

The building unit that enters the plant cell organelle membranes is ribose sugar. When the ribose sugar enters it has to break down into various substituents.

What is the number of carbons in ribose sugar ?

The number of carbons in ribose sugar is 5. It is a pentose sugar.

Fatty acids can not pass through the cell membrane as it is very big in size and because of its very larger size it is nearly not possible to enter through the cell membrane.

Simple lipid are present in the cell membrane that is it is following the fluid mossaic model that is the two layers of lipids are present om the cell membrane where the proteins are present on the outer layer. Various types of proteins are present on the membrane.

Nucleic acid is the part of the genetic material where it is present in the DNA,RNA and various proteins.

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Which of the following is a possible consequence of solid pollutants in a lake or river?

Build-up of garbage in freshwater
Quick drop in dissolved oxygen
Decrease in algae colonies
Sudden hypoxic waters

Answers

Answer:

B.) Quick drop in dissolved oxygen

Explanation:

High level of total suspended solids will increase water temperatures and decrease dissolved oxygen levels. This occurs because the pollutants absorb more heat from solar radiation than water molecules.

Wether the apple has a taproot or a fibrous root

Answers

Answer:

taproot

Explanation:

Apple trees roots consist of a deep taproot and lateral fibrous roots. The taproot is analogous to the carrot, which is a taproot. Lateral fibrous roots can extent to more than twice the spread of the canopy of the apple tree and are influenced by soil, water availability and competition from the roots of other plants.

Answer:Tap roots.

Explanation:Because the roots are long.

Explain the correlation between solar radiation and kelp biomass .

Answers

Answer:

icicles icicles icon DM irks an ignitor

The controls the materials that enter and
leave the cell.

Answers

Answer:

The Cell Membrane

Explanation:

The Cell Membrane

Cell membrane is the answer

how oil reservoirs are found

Answers

Answer:

A petroleum reservoir or oil and gas reservoir is a subsurface accumulation of hydrocarbons contained in porous or fractured rock formations. Such reservoirs form when kerogen (ancient plant matter) is created in surrounding rock by the presence of high heat and pressure in the Earth's crust.

Explanation:

Answer:

it is the oil. we want to mine from soil

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