Answer:
DNA structure
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation:
Who developed virtually the same theory of evolution?
Select one:
O a. Wallace
O b. Malthus
O c. Lamarck
O d. Lyell
Answer: I’m pretty sure it's Lamarck
Explanation:
I’m sorry if it’s wrong
describe how the skin works when the place is very hot
Answer:
when body temperature rises, such as when exercising on a hot day, the dermal blood vessels will dilate, in the sweat glands begin to secrete more sweat. the invaporation of the sweat from the surface of the skin cools the body by dissipating heat.
Explanation:
Hope this helped Mark BRAINLEST!!!
Answer:
When it is hot, we normally sweat. Sweating removes the heat energy from our skin. Our blood vessels open up which lets more blood flow. This allows a way for the heat to be lost. It lets your body cool down or try and cool down.
CAN SOMEONE PLZ HELP
1. List five organelles eukaryotes have that prokaryotes do not have.
2. Explain how the following organelles ensure that a cell has the proteins it needs: nucleus, rough ER, vesicles,
and Golgi apparatus.
3. What is the main difference between rough endoplasmic reticulum and smooth endoplasmic reticulum?
4. Describe the three types of vesicles.
Answer: 1 Lysosomes and peroxisomes, Microtubules, Endoplasmic reticulum, Mitochondria
2 The role of the nucleus of a eukaryotic cell is to control the cell. Because it contains most of the cell's DNA, which is encoded with genetic instructions, the nucleus controls which proteins the cell makes.
3 The rough endoplasmic reticulum has ribosomes on its surface. This is what give the RER a "rough" appearance. The smooth endoplasmic reticulum (SER) does not contain ribosomes. The Smooth ER looks more like tubes. The SER helps in the storage of proteins and lipids.
4 Secretory vesicles contain materials that are to be excreted from the cell, such as wastes or hormones.
Transport vesicles move molecules within the cells.
Vacuoles are vesicles that contain mostly water.
hope this helps
Answer:
sheeeeeeeeesh I agree with the other person
have a good day :)
Explanation:
Use the pedigree chart below to answer the question. What do the circles that are half shaded represent.
A a male that is a carrier of a trait. but does not show the trait.
B a female that is a carries of a trait, but does not show the trait
C a male that has the trait and shows the trait
D a female that has the trait and shows the trait.
Answer:
B
Explanation:
what are the two types of ATP production available in our muscles?
Answer:Muscle cells are able to produce ATP with oxygen, which is called aerobic respiration, or without oxygen, an anaerobic process called anaerobic glycolysis or fermentation. The process in which ATP is made is dependent on the availability of oxygen (see the Cellular Respiration concepts).
Explanation:
Which statement best describes the chemical substances secreted by the endocrine glands?
Answer: B if its wrong so be it
Explanation:
Cell respiration occurs in
heterotrophs only.
all eukaryotes.
animals only.
only.
Answer:
Cell respiration occurs in all eukaryotes
what's the function of PCT and DCT of nephron ?
Answer:
PCT and DCT are the two convoluted parts of a nephron found in the renal cortex. PCT occurs after the Bowman's capsule while DCT occurs after the loop of Henle. PCT is mainly involved in the reabsorption whereas secretion occurs in the DCT.
In the Hershey Chase experiment components of bacteriophages were labeled with radioactive isotopes of sulfur and phosphorus What was
the Hershey-Chase evperiment designed to determine?
Answer:
c
Explanation:
It was designed to determine whether the genetic material of the bacteriophage (a type of virus that infects bacteria) is made of DNA or protein.
What was Hershey-Chase experiment?The Hershey-Chase experiment, also known as the "Blender Experiment," was a classic experiment in molecular biology that was conducted in 1952 by Alfred Hershey and Martha Chase. It was designed to determine whether the genetic material of the bacteriophage (a type of virus that infects bacteria) is made of DNA or protein.
In the experiment, components of the bacteriophage were labeled with radioactive isotopes of sulfur and phosphorus. The labeled phages were then used to infect bacterial cells, and the cells were subjected to various treatments to separate the viral components from the bacterial components.
The results of the experiment showed that the genetic material of the bacteriophage was made of DNA, not protein. This was determined by the fact that the labeled DNA, but not the labeled protein, was able to enter the bacterial cells and infect them. This experiment provided strong evidence for the "central dogma" of molecular biology, which states that genetic information flows from DNA to protein, but not the other way around.
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List the three layers of the rainforest
Answer:
Canopy, understory, and forest floor.
Explanation:
Hope that this helped you :D
As the medical examiner performs an autopsy on a body found in a nearby forest, she collects sand from between the victim's toes
that is identical to sand from a beach located 20 miles from the scene. What is the most important reason that this is relevant to
the case?
A)
It suggests that the victim may have drowned.
B)
It suggests that the victim may have taken a recent vacation.
0
It suggests that the crime may have occurred at another site.
D
It suggests that the suspect may have been to the beach recently.
Answer:
It suggests that the crime may have occurred at another site.
What kind of seeds should farmers plants in order to grow giant pumpkins,and why is this important?
Answer:
Pumpkin plants need a lot of sun. Choose the sunniest place you have; remember that pumpkins are sensitive and will need shelter from wind and frost. Try to protect pumpkins from the worst of the elements by covering them during heavy rains, or putting up some kind of barrier to protect the vines from high winds or using shade tents during summer’s hottest days.
Pumpkins like and need a lot of water, but don't plant pumpkins in wet or dense soil. They need good, well-drained soil. You can dig it up by hand. Don’t use a tractor, pumpkin roots don’t go down very far. Prepare the soil in early spring, as soon as the ground is warm. Fertilize the patch with a good four inches of rotting cow manure. Pumpkins do best in soil that is slightly acid or nearly neutral.
If you live in a part of the country where there is still danger of frost in late April or early May, start pumpkin seeds indoors about two weeks before planting. Sow one seed for every four-inch peat pot filled with grow mix. Keep the pots watered, never let them dry out.
How to Plant Pumpkins
When seedlings have the fourth or fifth leaf, set them outdoors in hills about the size of a pitcher s mound, one plant to a hill. Protect pumpkin seedlings the first few weeks with plastic-covered frames. Space each hill at least 20 feet apart.
Growing Fall Pumpkins and Gourds
How to Fertilize Pumpkin Plants
Pumpkin plants have two kinds of flowers, male and female, which appear in early July. The male flowers show up first, followed by the females. Look out for the first female flowers. Look for vines to be strong and well-established before letting a female flower set fruit. It might help to break off the first female on each vine and wait for the second or third, when the vines are at least ten feet long. A female is easy to recognize: she has a baby pumpkin at the base of each flower.
You need a big vine to produce a big pumpkin, so in a sense you’re choosing the vine before the pumpkin. When you find a vine that’s strong enough and a female flower on the verge of opening, put a bag of cheesecloth over it for the night to keep the insects out. The next morning pick a fresh male bloom, trim off the corolla or outer petals, and rub the pollen-laden stamen in around the center of the newly opened female bloom.
How to Grow Pumpkins
Giant pumpkinsThis is just the beginning of a summer of long but rewarding work. What you have started is actually a pumpkin-producing factory. Remember that there are 100 or more leaves to each vine and if you are trying to grow a 300-pound pumpkin, each leaf is responsible for up to four pounds of weight in your pumpkin. Every leaf, every stem, every hair roots is now receiving sunlight, absorbing water, and blending nutrients. All are traveling down the all-important stem to your prize pumpkin.
Giant pumpkins balloon out from the vine and if precautions are not taken, they will tear away and lose touch with their all-important stem. Since vines put out roots at every leaf, tear out the roots of the vine where it is close to the pumpkin. This will give it free room to grow without damage to the vine. Gently train vines away from the pumpkin to prevent it from crushing them, try giving them a nudge in the right direction every day.
When two or three fruits on each plant reach the size of softballs, remove all but the most promising one and start to prune the pumpkin plants. After the primary vine has reached 20 feet, pinch off the tips and the side shoots so the vines won't divert resource from the fruit. Break off all the other female flowers A potential prizewinner is forming. The work of the plant now must go entirely toward nurturing this fruit alone.
It is important to remember that the only thing that will increase the size of the fruit comes out of the vines and the vines must get support from the natural root. For growing really big pumpkins, the most important things to remember are seeds, soil, sunshine, and water.
By mid-August the plants are pulling in water and nutrients at a great rate. Nighttime is when pumpkins do their growing, most expand two inches in circumference every night.
If it’s a dry season, give each plant 15 to 20 gallons of water twice a week. Water in the evening, and water only the base of the plant to keep the leaves dry, which reduces the risk of disease.
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The "Dill's Atlantic Giant" seed will produce a pumpkin that typically grows to reach between 200 and 300 pounds. They are not used for eating instead are carved and decorated.
What is the best way to grow pumpkin ?Long sunlight hours are preferred by pumpkins, so choose your garden location accordingly. Select a location with sufficient surface drainage and stay away from shaded regions. Additionally, being close to a water supply is crucial because these pumpkins need a lot of water to grow to their full potential.
Monster pumpkin seeds should germinate in soil that is 70 to 90 degrees Fahrenheit and 65 to 75 degrees in the air. Plant pumpkins from seeds indoors and transplant the seedlings to your garden five to seven weeks later. After the final frost in late May, plant. Avoid locations with complete or partial shade because full sun is crucial.
Therefore, its important to grow giant pumpkins used for ornamental purpose.
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Which kind of RNA constitutes part of a ribosome?
Group of answer choices
mRNA
rRNA
tRNA
none of the above
Answer:
rRNA...................
please help!! il give brainlist
Answer:
1-they are cats
2-different colors
3-orange.white.and black
Explanation:
Scientists hypothesize that early whale ancestors were amphibious. Which statement
below is most consistent with this hypothesis? The fossil animals ____________.
The diagram below shows a cell placed in a solution.
A cell is shown placed inside a beaker. It is labeled Cell. The solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.
Only water is allowed to move in and out of the cell. What will most likely happen to the cell?
It will expand as water moves out of it.
It will shrink as water moves out of it.
It will expand as water moves into it.
It will shrink as water moves into it.
Answer:
it will expand as water moves hope this helps!
Explanation:
Identify and analyze the way fossil fuel combustion has changed the composition of Earth's atmosphere, and the way this change has affected climate.
Answer:
Increases the concentration of carbondioxide gas in the atmosphere.
Explanation:
The burning of fossil fuel increases the concentration of carbondioxide gas in the atmosphere because when the fossil fuel burns, carbondioxide gas is released. Carbondioxide gas is a greenhouse gas which goes up in the atmosphere and make a layer which allow light radiation to the earth but prevent it from going to the space after reflection which causes increase of surface temperature of the earth leads to global warming.
The fossil fuel combustion has increased the concentration of carbon atoms in the atmosphere.
What is concentration of carbon?
Concentration of carbon means the amount of carbon in the atmosphere.
The amount of carbon dioxide has increased substantially after the industrial era.
The concentration of carbon is 400 parts per million in more traffic areas.
The level of indoor carbon depends upon the number of person present there.
Thus, the fossil fuel combustion has increased the concentration of carbon atoms in the atmosphere.
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vitamin(a) retinol function on the body
Answer: Function. Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucus membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A promotes good eyesight, especially in low light. Vitamin A (retinol) is ingested as either retinyl esters or carotenoids and metabolized to active compounds such as 11-cis-retinal, which is important for vision, and all-trans-retinoic acid, which is the primary mediator of biological actions of vitamin A
Explanation:
Are mitochondria found in both plant and animal cells?
Aeroplanes can fly ,just like birds.However,they are not considered living organisms .Give 4 reasons
1. Insects Have three pairs of legs or are the ______ arthropods.
4. ______ have two body segments and have no antennae
6. Butterfly is an exxample of an _______
7. This animal is an example of exoskeleton.
8. _____ are invertebrates that people can eat
9. _____ is an example of shellfish.
10. Snail is an examole of _____
pick your answer below
-eight
spiders
worm
snail
shrimp
six legged
antennae
mollusks
insects
shellfish
Answer:
1. Six legged
4. Spiders
7.snails
8. Shrimp
9.Mollusks
10.worm
Explanation:
Insects have three pairs of legs or are the six legged arthropods.
What is a arthropod?
Invertebrates with an exoskeleton, segmented bodies, and paired jointed appendages are known as arthropods. Arthropods are classified as members of the phylum Arthropoda.
They are distinguished by their jointed limbs and cuticle, which is frequently mineralized with calcium carbonate. Arthropods have an external skeleton and are bilaterally symmetrical.
1. Insects have three pairs of legs or are the six-legged arthropods.
4. Spiders have two body segments and have no antennae.
6. Butterfly is an example of an insect.
7. This animal is an example of exoskeleton- Snail
8. Shrimp are invertebrates that people can eat.
9. Mollusks is an example of shellfish.
10. Snail is an example of worm.
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How is carbon moving between the air and found decreasing
Answer:
It moves with the help of hydrogen
Write a scientific explanation that explains how oxygen and carbon dioxide travel within the seed and the egg.
Carbon dioxide and oxygen travel within the seed and egg to break the energy or food inside the seed or egg. It comprises schematic steps which are responsible for these functions.
What do you mean by Seed?Seed may be defined as the unit of reproduction of a flowering plant, capable of developing into another such plant.
The oxygen enters the seed and gets absorbed by the seed coat. It makes the seed coat wet and soft due to oxygen absorption. This oxygen now combines with energy that is stored inside the seed. The level of carbon dioxide increases when the process of photosynthesis will be initiated.
Therefore, carbon dioxide and oxygen travel within the seed and egg to break the energy or food inside the seed or egg.
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Help pleaseeeee fasttt
Describe at least three ways in which viruses, bacteria, protists, or fungi are important in your daily life.
Answer: hem living in and on your body that are beneficial to you. ... heating it to at least 71.6°C for only 15 s. ... List three ways fungi are important to the environment.
Explanation:
Logging involves people cutting down trees to acquire timber for uses such as building homes and making paper. How would logging affect a pine forest ecosystem? Choose the two that apply.
Answer:
Deforestation
Explanation:
When logging is applied in pine forest the organisms in the ecosystem as to go to extinction
Answer:
It would change the plant populations in the area.
It would change the animal populations in the area.
Explanation:
HELPP PLEASEEEE FASTTTT
Both parents in the example carry the dominant and the
recessive alleles for a trait (heterozygous). What is the
probability of the offspring expressing the recessive
phenotype?
Answer:
25%.................
Answer:
D, 25%
Explanation:
We can do this with simple math! Since we have a 1:4 ratio of possibly expressing the recessive phenotype, we will do 1/4.
1/4 = .25
Then, we will multiply this by 100, which results in 25.
Which statement best explains how a light wave behaves when moving from air to water?A:it speeds up and bands B:it slows down and bands C:it speeds up and continues straight D:it slows down and continues straight.
Answer:
it speeds up and bends
Explanation:
common sense lol
The statement that best explains how a light wave behaves when moving from air to water is "it slows down and continues straight." That is the last option, i.e., option D, as light travels more slowly in water.
What is the significance of the waves at different mediums?Waves react differently in different mediums, such as when the phenomenon of refraction is used in many optical devices such as lenses, prisms, and mirrors, and these devices change the property of light to slow down and bend when moving from one medium to another. In microscopes and telescopes, the study of light refraction has provided important insights.
Hence, the statement that best explains how a light wave behaves when moving from air to water is "it slows down and continues straight." That is the last option, i.e., option D, as light travels more slowly in water.
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how are diffusion and endocytosis similar?
what is the best explanation scientists have been able to come up with for the appearance of Ostrich-like birds in different continents
Answer: B. The distribution of some groups of ostrich like birds may have been influenced by continental drift in what is known as Pangea.
Explanation:
Answer:
B. The distribution of some groups of Ostrich-like birds may have been influenced by continental drift in what is known as Pangea
Explanation: