EXPLAIN THE PERIODS CIRCLE .THANKS I DONT UNDERSTAND IT
A menstrual cycle begins with the first day of your period, or menstruation and starts over again when the next period begins. Throughout a monthly menstrual cycle, your body makes different amounts of chemicals called hormones to prepare for pregnancy.
1979 is last natural case of this disease in the U.S
Answer:
I pretty sure the answer is smallpox
Answer:
It is smallpox.
Explanation:
On December 9, 1979, a commission of scientists declare that smallpox has been eradicated. The disease, which carries around a 30 percent chance of death for those who contract it, is the only infectious disease afflicting humans that have officially been eradicated.
what do both glycolysis and fermentation have in common?
A. the can occur in the absence of oxygen
B. they produce either lactic acid or ethyl alcohol
C. they involve a serious of reactions that progress in a circular fashion
D. they combine hydrogen with oxygen to produce water
Answer:
Ambas se realizan en ausencia de oxigeno
Respuesta A
Explanation:
La fermentación láctica transforma el piruvato en lactato
Durante la glucolisis una molecula de glucosa se convierte en 2 moleculas de piruvato y se obtienen 2 moleculas de ATP y 2 de NADH netas.
Plants have chloroplasts and mitochondria. What is the purpose of mitochondria when a cell already has chloroplasts?
To turn sugars into energy
To fight off infection
To help plants store water
To store vitamins
Answer:
To turn sugars into energy
Explanation:
[tex] \bf{ \underline{ \large{Functions \: of \: Mitochondria}}}[/tex]
Mitochondria are main sites of aerobic respiration. They are miniature biochemical factories where food stuffs are completely oxidised to carbon dioxide and water. The energy (ATP) produced in the mitochondria helps to perform various energy requiring processes. Because of the formation of ATP in mitochondria it is called power house of the cell.[tex] \bf{ \underline{ \large{Functions \: of \: Chloroplast}}}[/tex]
Photosynthesis: Light reaction (in thylakoids), Dark reaction (in stroma).Storage of starch.Translate the mRNA into the corresponding amino acids.
mRNA Molecule:
AUGAACCAUUCAGUAUGG
Amino Acid( fill) :
The corresponding amino acids would be
UACUUGGCAAGUCAUACC
The given mRNA sequence can be translated into the corresponding amino acid sequence as Methionine-Aspargine-Histidine-Serine-Valine-Tryptophan.
RNA ribosome translation is the process by which mRNA is translated into proteins. A ribosome is a cellular structure composed of proteins and rRNA. It is the site of translation, where codon codons are matched to amino acids and peptide bonds are formed between amino acids.
All mRNAs are degraded at a specific rate once they enter the cell’s cytoplasm. Some mRNAs are translated, some are stored for further translation, and some mRNAs are temporarily translational repressed.
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20. Describe the parts of a nucleotide.
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. RNA contains uracil, instead of thymine.
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-LavenderVye
Answer:
pls mark me brainliest. the answer
Explanation:
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. RNA contains uracil, instead of thymine.
What hormones are produced by the thyroid and parathyroid glands?
Explain the function of each.
Answer:
hope this helps:)
Explanation:
The thyroid gland uses iodine from food to make two thyroid hormones that regulate the way the body uses energy. The parathyroid glands are four tiny glands located behind the thyroid gland. The parathyroid glands produce a substance (parathyroid hormone) that helps control the amount of calcium in the blood.
There are several mechanisms through which reproductive isolation occurs. Which situation is an example of behavioral isolation?
A.
Mules, the offspring of a male donkey and a female horse, are unable to reproduce because they are sterile.
B.
The reproductive organs of snails only properly align when the male and female belong to the same species.
C.
Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
D.
Red and purple sea urchins cannot reproduce with one another because the sperm and egg cannot fuse.
why must lions expend more energy than their herbivorous prey?
They need to expend more energy because their energy is utilized in Hunting the prey.
What are carnivores?A creature known as a carnivore mostly consumes meat or animal flesh. Predators are another name for carnivores. Prey refers to the living things that predators consume. The food web, which describes which creatures consume which other organisms in the wild, includes carnivores as a significant component. Trophic, or nutritional, levels are used to classify organisms in the food chain.
Three trophic levels exist. The lowest trophic level is comprised of autotrophs or creatures that make their own food. Algae and plants are some of these. The second trophic level is occupied by herbivores or creatures that consume plants and other autotrophs. The third trophic level is composed of carnivores. The third trophic level also includes omnivores, which include animals, plants, and fungi in their diet.
Because autotrophs make their own nourishment, they are referred to as producers. Consumers include omnivores, carnivores, and herbivores. The main consumers are herbivores. The primary consumers are omnivores and carnivores.
Carnivores frequently consume herbivores. Some devour other carnivores, while others consume omnivores. Tertiary consumers of other carnivores are classified as carnivores. Orcas, or killer whales, are a well-known illustration of tertiary consumers. Sea lions and seals are prey for killer whales. Carnivores that eat fish, squid, and octopuses are seals and sea lions.
Therefore, carnivores need more energy for hunting.
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Each day, the moon will rotate about___degrees around the Earth.
A.)15
B.)13
C.)11
D.)23.5
Answer:
13
Explanation:
Moon moves 12-13 degrees East every day
it will rotate 13 degrees around the earth
best answer gets brainiest
Answer: Warm air rises, creating a low pressure zone; cool air sinks, creating a high pressure zone. Air that moves horizontally between high and low pressure zones makes wind. The greater the pressure difference between the pressure zones the faster the wind moves. Convection in the atmosphere creates the planet's weather.
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sorry if this isn't the right answer you are looking for...
what is meiotic metaphase II?
Answer:
In metaphase II, the chromosomes line up individually along the metaphase plate. In anaphase II, the sister chromatids separate and are pulled towards opposite poles of the cell. In telophase II, nuclear membranes form around each set of chromosomes, and the chromosomes decondense
Explanation:
Hope this helps :)
Which of the following problems is more likely to cause disease during aquaculture farming? (3 points)
-Aquaculture wastewater cleared by ocean currents
-Large density of fish in a small holding area
-Non-native fish enter aquaculture ponds from a river
-Increase in fish production from aquaculture farming
Answer: b, large density of fish in a small holding area
Explanation: I just finished the assignment and it was correct.
It is the Large density of fish in a small holding area that is when the production is increased to a greater number. The correct answer is option B.
What are the common diseases that may cause effects in fish ?These could be pathogenic invasions on their bodies. It can be them not feeding as well.
Risks that include amplification and the transmission of the disease that from the farmed to the wild fish along then the introduction of the non native kind of the pathogens along with the parasites in case when the fish are transported. Fish diseases takes place naturally in wild but effects often can go on unnoticed as the dead fish suddenly becomes prey.
Signs of the fish disease mainly include the abnormalities and symptoms as fish is not feeding that are having ulcers on body or the cloudy eyes. Most common indicators of the disease that are fish coming to ]surface and later gasping for the oxygen even higher than the usual levels of the sickness even death in aquaculture system.
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Helps me! Also I still have an hr to do this I have 10 questions left ouch!will give brainliest!
Answer:
b or c for sure
Explanation:
Can someone help me on this please
Answer:
first row: TCG AAT TCG GAA second row: GTA AAA TAG CCG
Explanation:
Genetically modified organisms (GMOs) are organisms that have had their genetic code altered. Scientists use genetic modification to create crops that are resistant to diseases or certain temperatures. GMOs in our food supply have been a subject of great controversy. List five questions you have about GMO foods.
Answer:
The questions about GMO:
1. Which are the potential risks of GMO and consequences on human health?
2. Is GM foods safe?
3. How are GM foods regulated nationally?
4. What are the most common GM foods?
5. What further developments can be expected in the area of GMOs?
Answer:
Are genetically modified foods healthier than non-GMO foods?
Does consuming genetically modified foods cause any potential harm?
Can genetic modification allow crops to grow in areas where they normally wouldn’t?
What effect do GMOs have on native organisms?
Do genetically modified crops have any positive or negative effects on the environment?
Explanation:
PLATO
How should the members of a sample be chosen
Answer: They must be randomly chosen, meaning that each member of the larger population has an equal chance of being chosen. They must be large enough so as not to skew the results. The optimal size of the sample group depends on the precise degree of confidence required for making an inference. Simple random sampling is the basic sampling technique where we select a group of subjects (a sample) for study from a larger group (a population). Each individual is chosen entirely by chance and each member of the population has an equal chance of being included in the sample.
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Which of the following is not a potential result of a bottleneck event?
a. an increase in potential mates
b. a decrease in genetic diversity
an increase in inbreeding
d. an increased chance of extinction
C.
Answer:
A. An increase in potential mates
Explanation:
An increase in potential mates would not be a potential result of a bottleneck event because it would actually increase the population rather than kill them off.
HAVE A GOOD DAY!!!!
Event an increase in potential mates is not potential result of a bottleneck.
What is the bottleneck effect for example?The bottleneck effect is an extreme example of genetic drift that occurs when the size of a population is severely reduced.
Events like natural disasters (earthquakes, floods, fires) can decimate a population, killing most individuals and leaving behind a small, random assortment of survivors.
Thus, option "A" is correct.
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The two types of reproduction are____ and___..
Asexual and sexual reproduction, two methods of reproduction among animals, produce offspring that are clones or genetically unique.
Answer:
asexual and sexual
Explanation:
In which phase of the cell cycle is the DNA loose and not chromosomes?
Answer:
Interphase
Explanation:
During this phase, the DNA is uncoiled and called chromatin. A pair of centrioles are present (but inactive in the cytoplasm) and the nucleolus is visible. At this time the cell grows, the DNA replicates and organelles grow in preparation for cell division.
Which of the following does not affect the gravitational force between the earth and the sun?
Answer:which of the following does not affect the gravitational force between the earth and sun
Explanation:
The following does not affect the gravitational force between the earth and the sun: the temperature that is listed in Option A as the temperature of the earth or the sun does not affect their masses or the distance between them.
What is the gravitational force?The force of gravity between two objects, such as the earth and the sun, is determined by two main factors: the masses of the objects and the distance between them, as there are many factors that have no role in this, such as temperature, rotation, magnetic fields, chemical composition, etc. The temperature of the sun may change, but its mass remains the same; the earth may rotate on its axis, but this does not change its mass or distance from the sun; and the magnetic fields of the earth and the sun also do not affect their masses.
Hence, the following does not affect the gravitational force between the earth and the sun: the temperature that is listed in Option A.
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The question is incomplete, complete question is below
Which of the following does not affect the gravitational force between the earth and the sun?
A)temperature
B)Earth
C)mass
Hydrogen ions are important in the light-dependent reactions of photosynthesis because they produce a
difference in charge across the thylakoid membrane that allows
a. the production of ATP.
b. the release of water molecules.
c. light to enter the chloroplast.
d. the conversion of 3-carbon molecules into higher-energy forms.
Answer:
a. the production of ATP
Explanation:
Photosynthesis is type of biosynthesis that produces glucose from the reactants sunlight, carbon dioxide and water. It happens in two phases of the chloroplast, the light-dependent and light-independent reactions. In a light reaction that stimulates photosystems, pigments such as chlorophyll absorb light energy at specific wavelengths. Here,
Light energy stimulates photosystem complexes formed from chlorophyll. Photosystem II then absorbs and transfers light to a reaction core. Water undergoes hydrolysis or splitting to yield an electron, a proton (H+) and oxygen. energy is passed along the electron transport chain, where it forms builds up H+ and an electrochemical gradient in the thylakoid spaceThese protons pass through the ATPase enzyme embedded within the membrane, into the stroma, generating ATP from ADP.NADPH is generated from NADP+wer
Should both of drinks Wand X be taken off the shelves? Why? *
Answer:Subtle laws govern wand ownership, but the conquered wand will usually bend ... A wand choosing to work for a wizard is said to have given them its allegiance. ... When the cores of two wands derive from the same source, they are referred to
Explanation:
plz don't just take my pons help me if u take my ponts i will report u
Answer: how am I supposed to answer this.
plant life cycle. animal life cycle.
flower larva, pupa, egg, and spore
fruit
seed
Explanation:
please help giving brainly
Answer:
D
Explanation:
because it is transporting toxic waste out and nutrients in and protecting everything inside. Have a great day hope its right and can i have brainly?
What do you notice about the water molecules?
Answer:
Explanation:
they have 2 OH bonds - which are hydrogen bonds,
they're polar due to the difference in electronegativities of oxygen and hydrogen
Answer:
Why do phase changes occur?
1. Compare: Set the Water temperature to 0 °C and click Play. Observe the water molecules.
Click Reset, set the Water temperature to 100 °C, and click Play again.
What do you notice? The water molecules are moving slightly faster at 100 °C than at 0 °C.
[Note: This difference may be too small to observe easily.]
2. Observe: Click Reset. The mean molecular speed of the water molecules is displayed
below the container. Set the Water temperature to 0 °C and Add/remove heat energy to
400 J/s. Click Play.
A. How does the mean speed of the water molecules change as they are heated?
The average speed of water molecules increases as they are heated.
B. Does the mean molecular speed change as much as the temperature as the
water heats up? Explain.
Sample answer: For each degree of temperature change, the mean molecular
speed increases by about 1 m/s. At 100 °C, the mean molecular speed is about
17% faster than at 0 °C.
3. Explain: How is temperature related to the motions of molecules?
The higher the temperature, the faster the molecules move.
4. Observe: Click Reset. Set the Water temperature to 20 °C and the Ice volume to 50 cc.
Set Add/remove heat energy to 0 J/s. Click Play. How do the molecules in the liquid
interact with the molecules in the solid?
The molecules of the liquid collide with the molecules of solid, gradually breaking the bonds
between the molecules in the solid and causing the ice to melt.
Explanation:
Which was not a result of the 1898 discovery of the four blood types and advances made during the two World Wars? improved blood transfusion safety effective blood preservation solutions developed ability to separate different parts of blood for different uses all blood types made compatible with each other
Answer:
All blood types made compatible with each other
Explanation:
Which was not a result of the 1898 discovery of the four blood types and advances made during the two World Wars
The statement was not a result of the 1898 discovery of the four blood types and advances made during the two World Wars is - all blood types made compatible with each other.
Blood typesThe discovery of four types of blood in 1898 helped in various ways for blood transfusion and storing and preserving the blood. It also helps in separating components of blood such as plasma, platelets and blood according to their use.
All blood types are not compatible with one another and cause lethal effects if transfused to the blood receiver of a different type of blood.
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Which of these is an indicator of the age of a woody plant?
O A.
The number of growth rings
OB.
The thickness of the growth rings
O c.
The distance between the growth rings
Answer:
The answer to the question is A
Explanation:
The main indicator of a woody plants age like trees are the amount of rings inside, for example if a tree had twenty rings the tree would be twenty years old.
Plenty of food, water and suitable temperature are the conditions required for the growth of fungi. Is it true or false?
Explanation:
Some species of fungi do grow better at warm temperatures (70-90°F), but there are some that thrive in very high temperatures of 130-150°F and some that will thrive in very low temperatures below 32°F (below freezing). ... Water: Fungi need lots of water to grow. For most fungi this is true. :)
What is a T-cell receptor?
Answer:
The T-cell receptor (TCR) is a protein complex found on the surface of T cells, or T lymphocytes,[1] that is responsible for recognizing fragments of antigen as peptides bound to major histocompatibility complex (MHC) molecules. The binding between TCR and antigen peptides is of relatively low affinity and is degenerate: that is, many TCRs recognize the same antigen peptide and many antigen peptides are recognized by the same TCR.
Explanation: