The menstrual cycle begins with a change in hormonal level and maintaining the endometrial lining of the uterus.
How does hormone level change during the menstrual cycle?The endometrial lining is a breakdown, and low levels of estrogen cause to stimulate the pituitary to release FSH and LH, this hormone stimulateing follicles for developing oocytes to produce estrogen.
When estrogen level is at a peak, suppresses FSH production and develops other follicles, a gradual increase in LH causes the follicle to rupture then high progesterone levels maintain the endometrial lining.
Therefore breakdown of the corpus luteum this progesterone levels to drop and complete the cycle.
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pleaseeeeeeeeeeeeeeeeeee im begging you guys i need answer pls
Answer:
1. Superior
2. Dorsal
3. Posterior
4. Ventral
5. Inferior
6. Anterior
7., 10. Medial
8., 9. Lateral
what symbiotic relationship between a wolves & Bear
Because bears easily oust wolves from their kills, bears may discover more ungulate carcasses over a longer period of time because wolves forage on ungulates all year long.
what coexists harmoniously with wolves?Petroglyphs on cave walls depict the symbiotic interaction between the wolf and the grizzly bear. Since the end of the last Ice Age, these two wild animals of the North have been involved in an amazing survival dance.
What is the bear's symbiotic relationship?Bear Lice, which are around 2 mm long and dwell on the surface of the bear and eat, coexist in harmony with Black Bears.
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In the science field we use the metric units, this is due to
A. Metric units are universally accepted.
B. Metric is a universal scientific language.
C. Both
In the science field we use the metric units because of both the given reasons i.e. A. Metric units are universally accepted. B. Metric is a universal scientific language.
What is a metric unit system?The decimalized system based on the meter that had been adopted in France in the 1790s was replaced by the metric system, which is a system of measurement.
What do you mean by universal?Including or covering all or a whole collectively or distributively without limit or exception.
Why we use Metric System ?A standardized approach that enables international scientists to communicate and compare notes is necessary. Without a standard, they would have to spend extra time converting measurements between different systems of measuring, which would reduce accuracy. SI or metric unit is favoured because, among other things, it is not based on the bodily parts of individuals who lived hundreds of years ago. A universal standard that anyone can verify serves as the foundation of this sleek and straightforward system.
Hence, 'In the science field we use the metric units because of both the given reasons i.e. A. Metric units are universally accepted. B. Metric is a universal scientific language.
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how many bonds connect adenine and thymine?
2 hydrogen bonds connect the adenine and the thymine.
what what may increase or decrease the speed of an object?
What is the DNA replication process?
When a cell divides, DNA copies itself through a process called replication.
What are the steps involved in replication?
The double helix structure of the DNA molecule must first be unzipped in order to begin DNA replication. A enzyme called helicase does this by dissolving the hydrogen bonds binding the complementary nucleotides of DNA together (A with T, C with G)A replication fork is formed when the two single strands of DNA split apart. The two split strands will serve as models for creating the new DNA strands.The leading strand is the one of the strands that is orientated from 3' to 5' (towards the replication fork). The other strand, known as the lagging strand, is orientated in the 5' to 3' orientation (away from the replication fork).A little RNA fragment known as a primer, which is created by the enzyme primase, arrives and attaches to the leading strand's end. The primer serves as the initial template for the synthesis of DNA.A, C, G, and T are new complementary nucleotide bases that DNA polymerase adds to the leading strand of DNA as it walks along it in the 5' to 3' orientation.Continuous replication is what it is known as.The primase enzyme produces a large number of RNA primers that bind at diverse locations along the lagging strand.The lagging strand is then supplemented with chunks of DNA, known as Okazaki fragments, also in the 5' to 3' direction.As the Okazaki fragments will eventually need to be joined together, this type of replication is known as discontinuous replication.Once all of the bases have matched (A with T, C with G), the primer is removed by the enzyme exonuclease (s). More complementary nucleotides are subsequently added to fill in the spaces left by the primer(s) in their place.To ensure that the new DNA sequence is error-free, the new strand is proofread.Finally, the DNA sequence is sealed into two continuous double strands by an enzyme known as DNA ligase.Two DNA molecules made up of one new and one old chain of nucleotides are produced as a result of DNA replication. Due to the fact that only half of the replication chain is made up of original DNA molecules, DNA replication is referred to as being semi-conservative.The newly created DNA automatically forms a double helix after replication.Hence the process of DNA replication
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Which criterion is a requirement for naturalization as a US citizen?
A.
The person must be a lawful, permanent resident for five years.
B.
The person must read, write, and speak at least two languages.
C.
The person must be related to a natural or naturalized citizen.
D.
The person must be between the ages of 18 and 55 years old
The person must be a lawful, permanent resident for five years is the criterion that is a requirement for naturalization as a US citizen.
You must be at least 18 years old, be able to read, speak, and write English, have knowledge of US history and government, adhere to the laws outlined in the US constitution, and have lived on US soil for at least 30 months prior to applying in order to qualify for citizenship as an American. There are also other requirements that must be met in order to qualify for citizenship as an American.
Following compliance with the criteria outlined by Congress in the Immigration and Nationality Act, a lawful permanent resident is granted U.S. citizenship through the naturalization process (INA).
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You wish to investigate how exercise affects the rate of cellular respiration. You decide to squeeze a ball for 5 minutes and around 3 minutes you begin to experience a burning sensation and fatigue. This means your muscles are beginning to run out of oxygen. What process is causing the burning in your muscles?
You wish to investigate how exercise affects the rate of cellular respiration. You decide to squeeze a ball for 5 minutes and around 3 minutes you begin to experience a burning sensation and fatigue. This means your muscles are beginning to run out of oxygen. What process is causing the burning in your muscles?
Electron transport chain
Alcoholic fermentation
Lactic acid fermentation
Krebs cycle
During muscle contraction, if feeling fatigued it means that muscles do not get in the required oxygen to generate ATP causing lactic acid fermentation, hence option c is correct.
What is Lactic acid fermentation?A metabolic process called lactic acid fermentation turns six-carbon sugars like glucose or other six-carbon sugar disaccharides like sucrose or lactose into the metabolite lactate.
It generates carbon dioxide as well as lactic and acetic acids, which swiftly reduce pH levels and prevent the growth of bacteria that may otherwise ruin crispness.
Therefore due to anaerobic conditions muscle gate fatigue creates lactic acid fermentation, hence option c is correct.
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why could the jaws of athropods be considered modified appendages
The jaws of arthropods are considered modified appendages because they have evolved into multiple forms adapted to various modes of feeding.
What is the function of appendages in arthropods?Appendages of arthropods are the external features of projections from the head or body segments used for feeding, mobility, piercing, chewing, sucking and admonition. Arthropods have modified jointed paired appendages where their ancestral forms would have had more legs.
Unlike the annelids, arthropods' jointed appendages give them greater flexibility and range of movement. The appendages are found in the mouthparts, antenna, legs. Some of these organisms are crustacean, arachnids, insects, etc.
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what type of species are cheetahs?
Answer:
cheetahs are cats
Explanation:
4. Show the possible genotypes and phenotypes of the offspring from a cross between a heterozygous male with type A blood and a heterozygous female with type B blood.
Answer:
A heterozygous male with type A blood IA IO
A heterozygous female with type B blood - IB IO
a cross between a heterozygous male with type A blood and a heterozygous female with type B blood.
Possible parent genotype: IA IO x IB IO
AO X BO
possible offspring genotype: AB AO BO OO
phenotypes: AB blood type (25%), A blood type (25%), B blood type (25%) and O blood type (25%).
Explanation:
Which statement BEST describes why warm ocean currents are usually surface currents?
Answer:
density
Explanation:
the warm currents are usually at the surface because they are less dense then the cold currents the colder current is the farther down in the ocean it will be
what does the chemiosmotic process in chloroplasts involve?
The chemiosmotic manner in chloroplasts involves a proton gradient throughout the thylakoid membrane. for the duration of photosynthesis, energy is launched as electrons, which can be transferred down the electron shipping chain. This occurs inside of the thylakoid
Chemiosmosis includes the pumping of protons through special channels within the membranes of mitochondria from the inner to the outer compartment. The pumping establishes a proton (H+) gradient. After the gradient is set up, protons diffuse down the gradient thru a transport protein called ATP synthase.
Chemiosmosis includes the electron delivery chains located in the mitochondria and chloroplasts. The chemiosmotic procedure in mitochondria takes place all through mobile breathing. NADH and FADH2 provide electrons to the and so forth on the inner mitochondrial membrane.
Inside the electron shipping chain, electrons are handed from one molecule to some other, and energy released in those electron transfers is used to form an electrochemical gradient. In chemiosmosis, the power stored inside the gradient is used to make ATP.
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Internal and external information is brought to the brain in the process of
Answer: Consciousness
with reference to trophic levels compare the survival of organisms in the terrestrial hand aquatic habbitat
The survival of organisms in both the terrestrial and aquatic habitat depends on the first trophic level, which is represented by the producers in these ecosystems.
What are producer organisms?The producer organisms are those organisms that generate biomass by using solar radiation through a process known as photosynthesis, which includes algae in aquatic environment and plant in terrestrial environments. These organisms serve to sustain al trophic levels in the food chain.
Therefore, with this data, we can see that the producer organisms sustain life in all types of ecosystems and they are located at the first trophic level.
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Which of these pathogens enters
the host through the mouth, nose,
anus, or skin and mostly lives in
the intestinal tract?
fungi
parasitic worms rhis
Answer:
b) Parasitic worms
Explanation:
Parasitic worms enters the host through the mouth, nose, anus, or skin and mostly lives in the intestinal tract. Therefore, the option (b) is the correct answer.
Answer:
B. Parasitic worms rhis
Is the process of using energy from sunlight to produce glucose from carbon dioxide and water
100 POINTS
HOW MANY ANAPHASE, TELOPHASE, METAPHASE, PROPHASE, INTERPHASE CELLS
ARE THERE
Mitosis is the cell division process, composed of four phases (prophase, metaphase, anaphase, and telophase). It is preceed by the interphase and followed by cytokinesis. In the image, Interphase: 31 cells. Prophase: 6 cells. Metaphase: 1 cell. Anaphase: 1 cell. Telophae: 1 cell.
What is mitosis?
Mitosis is a cell division process through which a diploid somatic cell (2n), produces two daughter diploid cells (2n).
Before mitosis, the whole-cell first suffers duplication of its content during the interphase, and then the cell goes under division. Mitosis occurs in somatic cells and in germ cells.
Mitosis is divided into four phases.
During prophase, chromosomes condensate, and the nuclear membrane breaks. During the metaphase, fibers of the spindle apparatus take chromosomes toward the equatorial cell plane, where they line up. Sister chromatids are holden together until they reach the Anaphase, during which specialized enzymes break the bonds between chromatids and separate them. Each chromatid migrates to one of the poles. In telophase, the new chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole.Finally, cytokinesis occurs.
In the attached image, there are 40 cells undergoing cell division.
Most cells are in the interphase, either in G1, S, or G2 stages. There are 31 cells in the interphase, and they are marked with an orange circle. Six cells are in the prophase. Some of them in the early prophase and some others in the late one. These cells are marked with a green circle.Only one cell (marked with a pink circle) is in the metaphase. There is only one cell marked with a blue circle going through the anaphase. Finally, one cell in the early telophase marked with a yellow circle.You can learn more about mitosis at
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Which systems work together so oxygen can be
distributed to the cells of your body? How do these two
systems work together to accomplish this task?
Circulatory system and respiratory system work together so oxygen can be distributed to the cells of your body.
The circulatory and respiratory systems collaborate to move blood and oxygen around the body. The trachea, bronchi, and bronchioles transport air into and out of the lungs. The pulmonary arteries and veins connect to the heart and transport blood into and out of the lungs.
To obtain oxygen, blood travels from the heart to the lungs. The respiratory system includes the lungs. The exchange of gases between tissues and blood is a critical function of the circulatory system. Blood absorbs oxygen and emits carbon dioxide in the lungs of humans, other mammals, and birds. Thus, the circulatory and respiratory systems work in tandem to obtain oxygen and expel carbon dioxide.
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Why is Mendel's model of genetics not the only model of inheritance?
Mendel's model of genetics is not the only model of inheritance, because may be another model, was also presented by another scientist.
How is Mendelian inheritance different from Non-Mendelian inheritance?The Mendelian quality is determined by dominant and receding alleles of one gene. On the opposite, non-Mendelian traits are not determined by dominant and relapsing alleles and can be governed by more than one gene. Non-Mendelian inheritance is any design in which traits do not segregate in accordance with Mendel's laws.
The genetic traits that follow the truth of Mendel's law are known as Mendelian inheritance while the genetic traits. Non-Mendelian genetics are inheritance motif that is different from Mendelian inheritance.
So we can conclude that Mendelian inheritance reports the inheritance of phenotypes, determined by only two alleles. One of the two alleles is dominant.
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Ability of seed to germinate.
What reasons besides being necessary for the methane cycle, can you think of that might
make the discovery of liquid water on Titan be important to us? Please, provide at least two
and elaborate on why.
Titan's rivers, lakes, and seas of liquid methane and ethane could provide a habitable environment on the moon's surface, though any life there would most likely be very different from life on Earth.
Methane gas is effective at trapping heat and burns quickly. As a result, methane is one of the most important human fuels. Furthermore, methane in the atmosphere helps to regulate the Earth's climate.
Over the first 20 years after it enters the atmosphere, methane has more than 80 times the warming power of carbon dioxide. Even though CO2 has a longer lasting effect, methane drives warming in the short term. Methane from human activity is responsible for at least 25% of today's global warming.
As a result, methane not only contributes to global warming directly, but also indirectly through the release of carbon dioxide.
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Which statement describes meiosis?
Meiosis results in haploid cells.
Meiosis is a type of cell division that occurs in sexually reproducing organisms and results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm). Body (or somatic) cells in humans are diploid, with two sets of chromosomes (one from each parent). Meiosis is the process by which a single cell divides twice to produce four cells with half the original genetic information. These are our sex cells, sperm in men and eggs in women.
Due to the fact that cell division occurs twice during meiosis, a single starting cell can produce four gametes (eggs or sperm). Cells go through four stages during each round of division: prophase, metaphase, anaphase, and telophase.
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Give the phenotype and genotype of the offspring from a cross between a homozygous long-haired (LL) Alaskan husky and a heterozygous long-haired (Ll) husky. the phenotype and genotype of the offspring from a cross between a homozygous long-haired (LL) Alaskan husky and a heterozygous long-haired (Ll) husky.
When cross is made between a homozygous long-haired (LL) Alaskan husky and a heterozygous long-haired (Ll) husky, the phenotype of the offspring will be long hairs and the genotype will be in 1:1 ratio which is LL and Ll.
Heterozygous refers to the presence of two different forms of the allele for a trait. These two different alleles are actually the contrasting forms of a gene. For example, the trait height can have two contrasting alleles one for tall and one for dwarf.
The phenotype is the observable result of any character in an individual. The phenotype is the result of the genetic composition for that particular trait.
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3. Show the possible genotypes and phenotypes of the offspring from between a homozygous male with type A blood and a homozygous female with type B blood.
Answer:
A heterozygous male with type A blood IA IO
A heterozygous female with type B blood - IB IO
a cross between a heterozygous male with type A blood and a heterozygous female with type B blood.
Possible parent genotype: IA IO x IB IO
AO X BO
possible offspring genotype: AB AO BO OO
phenotypes: AB blood type (25%), A blood type (25%), B blood type (25%) and O blood type (25%).
Explanation:
Label the diagram:
Pyrimidine, Nucleotide, Deoxyribose, Purine, Phosphate, Hydrogen bond
Nucleotides are the subunits of nucleic acids. These monomers are composed of three parts, the base, the phosphate group, and the sugar. In the xposed emage, 1- nucleotide. 2- pyrimidine. 3- purine. 4- phosphate. 5- deoxyribose. 6- Hydrogen bond.
What are nucleotides?
Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base. Many of these monomers comprise nucleic acids, which are polymer.
Monomers are composed of carbon, oxygen, and hydrogen atoms, which establish covalent bonds.
Nitrogenated bases are molecules carrying nitrogen and exhibiting the chemical properties of a base. These are purines (Adenine and Guanine) and pyrimidines (Thymine, Uracyl, and Cytosine.).DNA ⇒ Adenine, Guanine, Thymine, and Cytosine.
RNA ⇒ Adenine, Guanine, Uracyl, and Cytosine
Adenine pairs with thymine or uracil, while guanine pairs with cytosine.
Sugar group: Sugar is always a pentose.DNA sugar group contains deoxyribose
RNA sugar group contains ribose
Phosphate groupIt is composed of a central phosphoric atom surrounded by four oxygen atoms arranged in a tetrahedron layout.
Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information necessary to carry out cellular functions.
In the exposed emage, we can see
1- Represents the whole nucleotide.
2- Is a pyrimidine.
3- Is a purine.
4- Represents the phosphate.
5- This is the DNA deoxyribose.
6- Hydrogen bond.
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rock whose mineral grains are NOT formed in bands is called ___________________.
Answer:
non-foliated rocks
Explanation:
animals are a. Prokaryotic without a cell wall b. Eukaryotic without a cell wall c. Eukaryotic with a cell wall d. Prokaryotic with a cell wall please answer quickly
Answer:
b.
Explanation:
Animals, plants, fungi, and protists are all eukaryotes
Discuss one unique feature of the water cycle of Gorongosa National
Park (examples include Mt. Gorongosa, Lake Urema).
In Gorongosa National Park, large number of diverse plants and animals are found. It is a home to those diverse Flora and Fauna. It is rich in diversity and it is also said that the type of creatures and plants that resides in the park cannot be found anywhere else in the world.
What is the water cycle of Gorongosa national park?
The park is surrounded by a large lake and the park is situated beneath the mountain that is approximately 2000 meters above the sea level.As it is home to the diverse flora and fauna, protecting and preserving them becomes the important issue.The trees on the the Mt. Gorongosa becomes an important alley in protecting them.It has been scientifically proven that if the trees on the Mt. Gorongosa are cut down, the water flow would drastically change and the mountain would become extremely flooded during winters and drought during dry season.
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Which of the following
describes parasitic worms?
A. single-celled eukaryotes that are usually
found in contaminated water or insect bites
B. living, single celled organism that are the
most common pathogen and can be treated
with antibiotics
C. multicellular pathogen that lives in the
intestinal tract of host to absorb nutrients this
D. non-living pathogen that can't be treated
with antibiotics and reproduces with a host
Answer:
C. multicellular pathogen that lives in the intestinal tract of host to absorb nutrients this.
Explanation:
Answer:
c) multicellular pathogen that lives in intestinal tract of host to absorb nutrients
Explanation:
Parasitic worms are the multicellular pathogen that lives in the intestinal tract of host to absorb the nutrients. Therefore, the option (c) is the correct answer.