Answer:
1. Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
2. The DNA double helix. The two sides are the sugar-phosphate backbones, composed of alternating phosphate groups and deoxyribose sugars. The nitrogenous bases face the center of the double helix.
3. A nucleotide is an organic molecule that is the building block of DNA and RNA. ... A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
4. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
5. In genetics, the term junk DNA refers to regions of DNA that are non-coding. Some of this noncoding DNA is used to produce noncoding RNA components such as transfer RNA, regulatory RNA and ribosomal RNA
Hopes this helps.
Darwin's finches are often used to illustrate evolution. Evaluate the finch beaks shown in the picture. Choose ALL of the statements that correctly explain the evolution of finch beaks.
A) As the environment changed, the finches grew longer beaks to allow them to get food out of fruits.
B) Finches with longer beaks settled on the same island with smaller beaked birds. Over time, they bred, producing medium beaked birds that became more common in the population.
C) There are finches with different types of beaks in the population. During a drought, those with shorter beaks are not able to find sufficient food and die, leaving them unable to reproduce and pass the trait on to offspring.
D) A random mutation introduced the shorter, thicker beak into the population. However, those with thinner, longer beaks were better able to get nectar from the island's flowers. Those birds with the shorter, thicker beaks were unable to get enough food to survive.
E) A disease swept through the island killing many of the insects that were common on the island, leaving the birds who ate insects from the ground starving. The finches that had thicker beaks and could get food from tree bark were able to continue to survive and reproduce, increasing this trait in the population.
Answer: It's C and E, got it wrong because of this kid so it's not A and D
Explanation:
Please help me with this
So In biology, a mutation is an alteration in the nucleotide sequence of the genome of an organism. So what would you look up that interests you
Hope This helps!!!
Sam is making a new homestead in Alaska and needs a supply of fresh drinking water.
i) How can Sam use his knowledge of the water cycle to determine how much water is available?
NO LINKS AND COMPLETE ANSWER (PARAGRAPH)
ii) Describe in detail: Where can he find fresh drinkable water? How can he collect that water? How can he confirm that it is not contaminated?
Answer:5 Understanding Your Septic System And Water Quality ... 3.1.3 Constructed Wetlands: A New Concept In Treating Wastewater. Section 3.2. On-site ... ground information on water supplies, the water cycle, ... We use water in so many ways that we take it for granted ... water on earth, is liquid fresh water available for most.
Explanation:
Which human activities would most likely increase turbidity? Check all that apply.
cutting down trees
building roads in mountains
constructing buildings
planting gardens in vacant lots
removing sediments from sidewalks using water
Answer:
A.
B.
C.
E.
Explanation:
The human activities that will most likely increase turbidity are as follows:
constructing buildingsremoving sediments from sidewalks using waterWhat is turbidity?Turbidity is a quality of having the lees or sediment disturbed i.e. not clear.
Turbidity is a measure of transparency of a water body. It is caused by a release of sediments into the water that makes it unclear.
Therefore, the human activities that will most likely increase turbidity are as follows:
constructing buildingsremoving sediments from sidewalks using waterLearn more about turbidity at: https://brainly.com/question/26612834
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Klaus is going to Greece to study the ancient columns. He typically studies artifacts in a lab, but the columns are immobile and can't be taken to
a lab. What kind of artifacts are the columns considered to be?
A .archaeological features
B.stationary artifacts
с.cumulative lifeways
D.stationary remains
Glucose, Starch, and cellulose are this type of molecule that is produced by plants *
A.lipids
B.proteins
C.carbohydrates
PLS HELP
C. Carbohydrates
Hope you find this helpful
Which behavior is a response to an external stimulus? EXPLAIN WHY
A. An elephant drinks water to quench its thirst.
B. A dog vomits during an illness to rid itself of pathogens.
C. A child gets a fever to fight off the flu.
D. A turtle suns itself on a rock during a cool day.
Answer:
D
Explanation:
External means outside of, internal is within. The question is asking for external stimulus. Answers A-C are internal: thirst, fever and illness.
Limiting factors are divided into two categories. What are they? Give an example of each.Limiting factors are divided into two categories. What are they? Give an example of each.
Answer:
Limiting factors fall into two broad categories: density-dependent factors and density-independent factors. These names mean just what they say: Density-independent factors have an impact on the population, whether the population is large or small, growing or shrinking.
the density-dependent factor example is:
Density-dependent factor, also called regulating factor, in ecology, any force that affects the size of a population of living things in response to the density of the population (the number of individuals per unit area).
the independent factors example is:
Pollution. Like other density independent factors, pollution is a good example of a density independence.
Explanation:
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Imagine you are a scientist who monitors some of North Carolina's trout streams. You find that one of the streams has a temperature of about 13°C during most of the day. However, everyday around 2 p.m., the stream briefly reaches temperature levels of 19°C. What should you do in order to preserver the water quality of this stream?
Answer:
15
Explanation:
Can I please get help?
Answer:
Technology because we don't have the necessary technology to explore the parts of space and for all we know we don't even know what the universe actual looks like or if there are alternate universes but as technology advances we will know. Explanation:
What happens to carbon in the process of photosynthesis?
Answer:
The plant uses sunlight as energy to perform this chemical reaction. Photosynthesis separates carbon dioxide and water known as CO2 and H2O, respectively into their individual molecules and combines them into new products. It also creates C6H12O6, a substance similar to glucose, that feeds the plant.
Explanation:
- Eijiro <3
Answer:
Photosynthesis separates carbon dioxide and water. (C02 and H20)
HELP!!
Which features of alveoli enable them to exchange gases efficiently? (Select all that apply.)
A. thin walls
B. surrounded by blood vessels
C. small numbers of them in each lung
D. large surface area
Do not scam me using links or attachments (except photos of the answer) or answer this by saying a simple yes or no because that also scams me.
Answer:
the answer is a i hope this helps
Explanation:
The sac-like structure of the alveoli increases their surface area. In addition, the alveoli are made of thin-walled parenchymal cells. These features allow gases to easily diffuse across the cells. so the
Alveoli has thin walls which are surrounded by blood vessels, and they have maximized are for gas exchange. Thus, option A, B, and D are correct.
What are Alveoli?These are basic respiratory units, which are balloon like structure present in the lungs, where exchange of gases takes place. A pair of human lungs can contain approximately 480 million alveoli, which produces about, 50 to 75 square meters surface are.
Alveoli are made of thin walls, and they are covered by a rich blood supply through capillaries, this supplies a diffusion gradient for oxygen to move into the blood and carbon dioxide to move into the lungs.
Therefore, the larger surface area, presence of thin wall, which is only one cell thick, and rich blood supply due to presence of blood vessels enable them to exchange gases efficiently.
Learn more about alveoli, here:
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]How does emphasis on agricultural technology today compare to the recent past?
Today scientists are only concerned with the nutrition of livestock, not with size or quantity.
In the past, scientists were concerned with mass-producing for local areas, not for large areas.
In the past, scientists have not been concerned with the well-being of livestock or crops.
Today scientists are devising ways to use advancements in positive ways for the environment.
Answer:
In the past, scientists were concerned with mass-producing for local areas, not for large areas.
Explanation:
Today agriculture is made on a more global scale
!!!!!!PLEASE I NEED HELP ASAP!!!!!!WILL MARK BRAINLIEST!!!!!!!
Ficus leaves have a pointed end called a drip tip. A drip tip causes water that collects on the leaves to drain off. this keeps water from weighing down the leaves. In which environment would this adaptation be most useful?
A. a sandy, dry desert
B. rocky hills
C. forest with water fall
D. grassy plains
Answer:
C
Explanation:
A forest with rain fall is where the adaptation would be most useful since the leaves need it to not be weighed down by the often precipitation
Answer:
C
Explanation:
PLEASE HELP, ILL GIVE BRAINLIEST.
Answer:
Explanation:
i believe its c because the layers of smooth muscle allow the stomach to contract to mix and propel food through the digestive tract
C. to help churn the food and help break it down
HEY yall I m testing for TNready tmr i m so scared :((((( im so scared for the science part
Answer:
just concentrate on the test don't think about anything else you'll do fine
Explanation:
can i have brainliest
Answer:
Me too man. I'm starting next week.
Explanation:
It's all going to be alright tho, just try your best. Its next to impossible to be held back by an end of the year test.
Which statement best describes how panting after running helps a person's body maintain homeostasis? EXPLAIN THE ANSWER
A). It keeps the person's body warm when it is cold outside.
B). It rids the body of harmful organisms in the respiratory tract.
C). It brings more oxygen into the body to help meet increased energy
needs.
D). It signals the body to start exercising to prevent getting out of
shape.
Answer:
the answer is C
Explanation
we all know they homeostasis is the regulation of body fluids and temperature in the body , as the runner is panting , he is also sweating , sweating regulates the body temperature , panting is a signal to the brain that the person is losing oxygen so while panting , the runner is catching his breath
Parasites are organisms that live in or on a host organism, obtaining essential nutrition for themselves from the host. Parasites rarely kill their hosts, however. Which explanation BEST describes why evolutionary pressures selected for parasites that do not kill the host?
Answer: Parasites that kill the host lose their source of nutrition or energy and would be less likely to survive.
Explanation:
Which change would most likely increase the overall mass of a plant?
A. decreased reproduction
B. decreased respiration
C. increased photosynthesis
D. increased transpiration
one major contributor to global warming is an increased amount of carbon dioxide in the atmosphere. if the number of plants significantly increased then
A ) global warming might get worse because of the increase in carbon dioxide caused by plants
B ) global warming might be reduced because of the decrease in carbon dioxide caused by photosynthesis
C ) global warming might get worse because of the increase in oxygen caused by plants
D ) there might not be noticeable impact on global carbon dioxide levels
Answer:
B
Explanation:
Global warming might be reduced because plants take in carbon and give out oxgyen.
What is represented in each square of the periodic table?
Single term algebraic expression is called?
1 Monomial
2 Binomial
3 Trinomial
4 None of these
Answer:
Monomial
Explanation:
help please i have to do it now!!!!
Answer:
Explanation:
1,3,4 hope this helps<3
im confused its more science but yah oof
Use the photo to answer the question.
The devastation from the landslide shown—the disturbed soil, the knocked-over trees, the blocked waterways and road—are evidence that the change happened Response area over time.
their is to answers rapidly or slowly
Which statement best describes how panting after running helps a person's body maintain homeostasis? EXPLAIN THE ANSWER
A). It keeps the person's body warm when it is cold outside.
B). It rids the body of harmful organisms in the respiratory tract.
C). It brings more oxygen into the body to help meet increased energy needs.
D). It signals the body to start exercising to prevent getting out of shape.
IF YOU ANSWER ALL THESE QUESTIONS AND THERE ARE CORRECT YOU WILL GET BRAINLEAIST
1. Which part of the flower produces sperm?
2. Which part of the flower attracts pollinators, like bees?
3.What is the name of the male reproductive organ of the flower?
4.What is the function of the stamen?
5. What holds up the stamen?
6. What are the male reproductive parts of the flower?
Answer:
1. The anther produces the pollen grains that contain the sperm needed for fertilization
2.Petals attract the pollinators.
3.Stamens are the male reproductive organ
4.The main function of the stamen is to produce the pollen grains, which house male gametes , necessary for reproduction.
5.The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up.
6.A stamen consists of an anther (which produces pollen, the male reproductive cell) and a filament.
please mark as brainlsit if it helps
Answer:
1. the anther
2. showy petals and sepals, nectar guides, shape, size, and color.
3. stamen
4. The pollen-producing part of a flower, usually with a slender filament supporting the anther.
5. the anther and filament
6. anther, filament, pollen
Explanation:
If a fossil contains 50% of the amount of carbon that a living animal contains, how many half lives have passed while it decayed? How old is the fossil? (half lives x 5730)
The currently accepted value for the half-life of 14C is 5,730 years. This means that after 5,730 years, only half of the initial 14C will remain; a quarter will remain after 11,460 years; an eighth after 17,190 years; and so on.
Now I know that structures in a simple nervous system differ from those in a complex nervous system in that they have a
pls answer this seriously.
thx!!
Answer:
Now I know that structures in a simple nervous system differ from those in a complex nervous system in that they have a unit that isn't basic, but in their arrangement. In higher nervous systems there are not interneurons concentrated in the main nervous system. (brain, spinal, and cord.) They meditate the impulses between afferent and efferent neurons.
Explanation:
Pretend your classmate has told you that they are having trouble with what succession is. How would you explain to them what succession is? How would you explain the difference between primary and secondary succession? Write your response in the textbox and submit when you are done. DO NOT GO..OGLE YOUR ANSWER
Answer: In primary succession, newly uncover or newly found rock is populated by living things for the first time. In secondary succession, an district before it was populated by living things is disturbed, and then re-populated after the disturbance.
Explanation:
How many consumers are omnivores in the food web below?
Answer:
1
Explanation:
Omnivores are animals that eat both plants and animals. If you look at the bottom of the food web, you need to look for arrows that point towards an animal that also consumes other animals. The arrows indicate that the energy is being transferred from the plants to the omnivore. The Raccoon is the other organism that eats both a producer (blackberries) and other predators such as garter snakes and meadow voles.
Hope this helps!! Comment down below if you have any questions and please considered marking me as brainliest!!
Answer:
1
Explanation: