If a DNA molecule had a total of 1000 nucleotides and 200 of these are adenines, then the total number of pyrimidines is 500. Adenines (A) are purine bases.
DNA is a double helix molecule composed of two long chains of nucleotides that are held together by hydrogen bonds.
In DNA, there are four types of nucleotides, each containing one different nitrogenous base: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T).
Adenine (A) and guanine (G) are purines, whereas cytosine (C), thymine (T), are pyrimidines.
According to the base pair rules, Adenine always pairs with Thymine, whereas Guanine pairs with Cytosine.
In this case, the number of A + T is equal to 400 (200 + 200) and the number of G + C is 600 (300 + 300), thereby the number of pyrimidines or C + T is equal to 500 (200 + 300).
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Mosses that reproduce with gametes are , and those that reproduce with spores are .
At first, things that are reproduce with spores called sporulation. It means it is reproduction type. plants like bacteria, mucor etc reproduce by spores
which insect is recognized by nod like receptors?
Answer:
It is used for detecting bacteria
25. Which one of the following epithelial tissues lines blood capillaries?
A. Cuboidal tissue
5. Whigh
B. Squamous tissue
C. Columnar tissue
D. Glandular tissue
Hey, I need help with this question:
Answer:
CNN
Explanation:
which describes the Grand canyon as it will be one million years from today?
Answer:
I think it will become shallower and narrower.
Explanation:
This is because today, the Grand Canyon is deep and wide, we are talking about how it was one million years ago, which would look noting like this today. Little piece of rock has started to fall off of the sides of the Grand Canyon so it looks how it looks today.
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Which of the following examples best describes a disturbance that is likely to result in significant, long-lasting changes to an ecosystem?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
A frost in late spring kills some of the earliest budding plants and flowers in a field.
(Choice B)
B
Tens of thousands of geese rest for a week at a large lake during their annual migration.
(Choice C)
C
The failure of a 60-year-old beaver dam floods a downstream meadow.
The failure of a 60-year-old beaver dam floods a downstream meadow best describes a disturbance that is likely to result in significant, long-lasting changes to an ecosystem
It cause immense damage to the property, habitats due to water flooding over them.What is a dam?A dam is a barrier that stops or restrict the flow of surface water or underground streams.It is build across the stream or river to hold water back.It can used to store water, control floods and generate electricity.
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help now asap plssssss ols dont answer if you dont know
Answer:
Image 1
Hope this helps, have a nice day/night! :D
The carbohydrate molecule ____
is a powerhouse energy source.
A) Glucose
B) sucrose
C) lipid
D) amino acid
The carbohydrate molecule ____ is a powerhouse energy source.
→ A) Glucose
how 1 kg mass is defined in SI system?
Answer:
The kilogram is the basic unit of mass in the International System of Units (SI). Kilograms are known as kilos with the symbol kilogram being kg.
Explanation:
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if it's wrong, just report it :)
Which two formulas contain 4 atoms of oxygen
Answer:
Methane CH4 1 carbon atom : 4 hydrogen atoms
Sulfuric acid H2SO4 2 hydrogen atoms : 1 sulfur atom: 4 oxygen atoms
What are the two reasons why viruses have such small genomes. (Select both correct options) Viruses have fewer genes than living organisms. Increased selection for multiple chromosomes in viruses Viruses utilize a variety of genetic material for their genome Viruses have very little non-coding DNA
Answer:
WITHDRAWN
The publisher has withdrawn permission for online, public display of this title via the NLM Literature Archive. For additional information, please contact the publisher.
Two reasons for which viruses have such small genomes include 'viruses have fewer genes than living organisms' and 'viruses have very little non-coding DNA'.
What is the genome?The genome is all the genetic material present in the cells (either somatic or geminal cells) of an organism.
In eukaryotic organisms, the genome is big because it contains many genes required to synthesize different cellular components.Moreover, the eukaryotic genome also contains many non-coding regions, which are laking in smaller simpler genomes.In conclusion, two reasons for which viruses have such small genomes include 'viruses have fewer genes than living organisms' and 'viruses have very little non-coding DNA'.
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Explain how food is digested in the digestive system?
Deer are herbivores. What effects do you think a high deer population would have on Wesselman Woods?
Answer & Explanation:
Overly large population of any herbivore = them eating large amounts of any type of vegetation. Which means that for the woods there are less grasses/vegetation and it will end up causing other animals to starve therefor messing with the food chain.
Is that what you're lookin for? :)
A high deer population can have several negative effects on Wesselman Woods. These effects include a decrease in plant diversity, damage to trees, increased erosion, and a high risk of disease.
Decreased plant diversity: Deer are selective feeders, and they prefer to eat certain types of plants. This can lead to a decrease in plant diversity in the forest, as deer will eat the most palatable plants and leave the less palatable ones.
Damage to trees: Deer will browse on young trees, which can stunt their growth or even kill them. This can lead to a decrease in the number of mature trees in the forest, which can hurt the forest's overall health.
Increased erosion: Deer can trample on the ground, which can lead to increased erosion. This can damage the forest's soil and make it more difficult for plants to grow.
Increased risk of disease: Deer can carry diseases that can be transmitted to humans and other animals. A high deer population can increase the risk of these diseases spreading.
In addition to these direct effects, a high deer population can also have indirect effects on Wesselman Woods. For example, a decrease in plant diversity can lead to a decrease in the number of insects and other animals that depend on those plants. This can have a cascading effect on the entire ecosystem.
It is important to manage the deer population in Wesselman Woods to prevent these negative effects. This can be done through a variety of methods, such as hunting, fencing, and altering the forest's habitat.
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Coronary heart disease is the main cause of death in our country. The following factors can increase the risk of an individual contracting this disease:
-smoking
-unbalanced diet
-unhealthy lifestyle
Explain how these factors can contribute to coronary heart disease.
Smoking :-
The coronary arteries inside us are responsible for supplying our heart muscles with O₂ rich blood. When people smoke, plaque builds up in the arteries & the O₂ rich blood will not get supplied to the hear muscles causing atherosclerosis / coronary heart disease.
Unbalanced Diet :-
Eating an unhealthy diet which is high in cholesterol & fats also causes atherosclerosis (coronary heart disease). Too much salt in the diet can also raise blood pressure which is another factor responsible for this disease.
Unhealthy Lifestyle :-
Unhealthy lifestyles like not exercising at all & being obese lead to atherosclerosis (coronary heart disease).
_______
Hope it helps ⚜
A window display attracts passersby
True
False
Answer:
it is dosnt attracts passerby False
What happens to sister chromatids during mitosis
During cell division, each chromatid will separate and dwall inside one of the to daughter cells.
Help!!
How did reduced methane concentrations in the atmosphere affect Earth?
Earth warmed.
Earth cooled.
Volcanic activity decreased.
Volcanic activity increased.
Answer:
Earth cooled
Explanation:
Here are all the answers for that quick check:
1. Which option orders the events chronologically, from earliest to latest.
Answer: Single-celled organisms increase atmospheric methane concentrations. Photosynthesizing bacteria release oxygen into the sea. Oxygen concentrations increase in the atmosphere. Many new animal species evolve.
2. Which forms of life were dominant in the Mesozoic era?
Answer: Reptiles
3. How did the success of photosynthetic bacteria change Earth’s atmosphere?
Answer: increased oxygen concentration
4. How did reduced methane concentrations in the atmosphere affect Earth?
Answer: Earth cooled.
5. Which characteristic defines the Paleozoic era?
Answer: Animals with shells and hard parts were dominant for the first time.
You're welcome.
Answer:
Earth cooled.
Explanation:
The reduced methane concentrations in the atmosphere affect Earth :
Particles of gas and dust released into the atmosphere during a volcanic eruption affect the climate. Most of the particles emitted by the volcano cool the planet by blocking incoming solar radiation. The cooling effect can last from months to years, depending on the nature of the eruption.Therefore, the Earth is cooled.
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Which of the following will impact a populations equilibrium ?
. Random Mating
. No mutations
. Small population
. No Migration
Answer:
". Small population"
Explanation:
The conditions to maintain the (Hardy-Weinberg) equilibrium are no mutation, no gene flow, a large population size, random mating, and no natural selection. This can be disrupted by changes from any of its five main factors. No migration, no mutations, and random mating are all a part of this equilibrium, so the answer will be a small population.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Ans.......... No mutations
Give an example of a buffer in the body.
Answer: Several substances serve as buffers in the body, including cell and plasma proteins, hemoglobin, phosphates, bicarbonate ions, and carbonic acid.
Explanation:
f the daughter cell contains 24 chromosomes, how many were contained in the parent cell, for Mitosis and Meiosis?
Answer:
The answer to your question depends on whether cells are dividing after mitosis or meiosis. I will give explanations for both.
During mitosis, the nuclear content of the cells divides just prior to cytokinesis when the cell itself divides. Prior to mitosis, the DNA contained in the parent cell is...
Explanation:
KERE ON LEARNING?
1. What makes up a phenotype of a plant or animal?
2. What are the genes that produce a phenotype?
3. The study of heredity is called _________________.
4. Who is considered the “father” of genetics?
5. Genes had two copies each. These copies are called ___________.
6. What are Mendel’s 4 findings from his study?
7. The nucleus contains genetic material, or ______. (This is short for _______________________.)
8. How many PAIRS of chromosomes do humans have?
9. True/False: All species have the same number of chromosomes.
10. What are the four kinds of bases that join together in DNA strands?
11. What three people were instrumental in discovering DNA?
12. ___________ _________ make up proteins, and ____________ provide the code to make those proteins.
13. The human genome contains ________________ genes.
14. Describe sequencing.
15. Human DNA is 96% identical to the DNA of ___________________.
16. What are mutations and what do they cause?
17. Adaptations are caused by a ________________ in the DNA of an organism.
18. Describe one way studying genetics of organisms can be beneficial?
19. What are some ethical concerns we have about genetic studies?
Answer:
KANDEL FAMILY
Explanation:
1=Denish Kandel
2=Sujata Kandel
3=Bishnu Kandel
4=Luna Kandel
How many iodine atoms are in a molecule of the compound carbon
tetraiodide?
A. 4
B. 5
C. 6
D. 3
Awnser:
6
Explanation:
it Is 6 because their is 2 electrons on the inside and 4 electrons in the outside
Answer: its 4
Explanation:
which of the following food nutrients is needed to build structural components of the body
Answer:
Carbohydrates, fats, vitamins, minerals, fibre, water, and proteins!!!
Explanation:
Proteins. Proteins give your body amino acids — the building blocks that help your body's cells do all of their everyday activities. Proteins help your body build new cells, repair old cells, create hormones and enzymes, and keep your immune system healthy. There are also, carbohydrates, fats, vitamins, minerals, fibre and water. It is important that everyone consumes these seven nutrients on a daily basis to help them build their bodies and maintain their health.
Have a great day! :D
Hey, I need help with this question:
Answer:
A) Phylogenetic species concept.
Explanation:
Phylogenetic species concept defines a species as a group of organisms that shares a common ancestors and can be distinguished from other that do not share that ancestor.
Along with meats, poultry, and seafood, what food may increase your risk of food borne illness if not cooked?
Answer:
you could get very sick and believe me i have experienced it and it is not good also if yo eat to much of it you can die their is always that possibility
Explanation:
Because of it being raw so plz dont try it
Unpasteurized milk or milk products can result in food-borne illnesses.
What are foodborne illnesses?Foods can be contaminated by a wide range of disease-causing microbes, leading to a wide range of foodborne diseases, commonly known as foodborne sickness or food poisoning.
Over 250 foodborne illnesses have been uncovered by researchers. Numerous bacteria, viruses, and parasites are to blame for the majority of them, which are infections. Foodborne illnesses can also be brought on by toxins and chemicals contaminating foods.
Foodborne illnesses frequently cause nausea, vomiting, stomach cramps, and diarrhea. The symptoms of many foodborne infections, however, may vary. Sometimes, foodborne infections can have severe symptoms, and some of them can even be fatal. A foodborne disease may affect anybody, but certain people are more susceptible to getting one.
The majority of people who contract a foodborne disease recover on their own, but those who experience severe symptoms should visit a doctor.
Therefore, unpasteurized milk or milk products can result in food-borne illnesses.
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Need help with the question in the picture
Answer:
The answer is k = −11
Explanation:
f(−2)= 0
f(−2)= − 8 − 24 − 2 k + 10 = 0
2 k = -22
and finally; k= −11
ILL MARK BRAINLEST PLEASE HELP (PUNNET SQUARE PRACTICE)
Norma claims she pushed the button "for us" (to benefit her husband and herself )? Do you believe her or not ? Explain
USE R.A.C.E STRATEGY AND WRITE AT LEAST ONE PARAGRAPH ( or at least 6 sentences) NO BOTS OR LINKS
can someone tell me what is the right one please I beg u
Answer:
Active Ingredients
Explanation:
I think this because drugs have different active ingredients which make it a drug and some drugs can be used for theraputic reasons.
At plasma glucose levels of greater than 300 mg/100 mL plasma, what happens to the glucose that is not reabsorbed
Answer:
I think it's gets stored up in the liver
Explanation:
Something's including glucose that are in access in the body gets stored up in the body