Question: What day is considered to be the first day of a female's reproductive cycle?
Answer: When hormone levels are low and the uterus lining is shed.
The first day of a female's reproductive cycle is when hormone levels are low and the ovary releases an egg. This is known as ovulation and is the most important part of a woman's menstrual cycle.
What happen during ovulation?During ovulation, the egg's follicle bursts open and is released, travelling down the fallopian tube towards the uterus.
If the egg is fertilised, it will implant in the uterus and a pregnancy will begin; if it is not, it will be reabsorbed by the body, and the cycle will restart.
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what is meant by acropetal succesion?
Answer:
This is when older flowers are more at the base whilst younger/newer flowers are above
Explanation:
It's all about flower arrangement
Assertion (A): A proton gradient cannot be established in the mitochondria.
Reason (R): Hydrogen molecules are pumped out of an internal space (the matrix) in the mitochondria.
Which of the following is TRUE for the above statements?
Both (A) and (R) are true, and (R) is the correct explanation of (A)
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(A) is false, but (R) is true.
(A) is true, but (R) is false.
Based on the nature of proton gradient, (A) is false, but (R) is true.
What is a proton gradient?A proton gradient is a gradient that exists due to difference in proton concentration between the inner and outer mitochondrial matrix.
An assertion is a statement or claim stating a given position.
Assertion (A): A proton gradient cannot be established in the mitochondria.Reason (R): Hydrogen molecules are pumped out of an internal space (the matrix) in the mitochondria.The assertion, A, is false because a proton gradient is established in the mitochondria due to the function of the proton pump which pumps out protons from the inner mitochondrial matrix to the outer membrane.
The reason, R is true as hydrogen molecules are pumped out of an internal space (the matrix) in the mitochondria by the proton pump.
Therefore, (A) is false, but (R) is true.
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A. Refine the graph by adding the interval of time of extinction with a label drawn from the table as shown by “a”.
B. Analyze these data in terms of the clustering of extinction events.
C. Based on your analysis, explain how ecosystems have changed during the last 40,000 years, changed and identify the factor that caused these changes.
D. Based on the correlation between Earth’s temperature and the concentration of CO2 in the atmosphere, predict what will happen to animal populations in the future.
Answer:
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what are tissues composed of in addition to cells?
There are four types of tissues in the organism (epithelial, muscular, connective, and nervous). Tissues are composed of cells and extracellular matrix.
What are tissues composed of?
Tissues are cells organized and associated, accomplishing different functions in the organism.
There are four types of tissues: epithelial, muscular, connective, and nervous.
All of them are composed of the same components that might vary according to the tissue and its functions.
CellsCells are the main component of tissues. Their shape, size, organization, and closeness vary from tissue to tissue.
Extracellular matrixThe extracellular matrix is the space between cells. It varies in size, state, and composition depending on the tissue.
It contains proteins, water, salts, and other macromolecules. This composition also varies.
Among their many different functions, we can mention hydration, mechanical pressure resistance, reproduction and cell differentiation, motility, substances diffusion, communication between cells, and damaged tissue repairing, among others.
In addition to cells, the extracellular matrix compose tissues.
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What are the defining characteristics of ray-finned fishes?
Ray-finned fishes possess the characteristics of chordates.
Characteristics of ray-finned fishesThey are a group of fishes known as Actinopterygii in the Chordate phylum.
Thus, they possess the basic characteristics of chordates, such as:
Possession of hollow nerve cordPossession of notochordPossession of post- tailPossession of pharyngeal gill-slitsThis is in addition to basic features of fishes such as lateral lines, swim bladder, etc.
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The scientist responsible for disproving the theory of spontaneous generation:
Answer:
Francesco Redi
Explanation:
Italian physicists disproved the theory of spontaneous generation by observing the relations between maggots and fly eggs on meat.
[tex]\huge\sf{ANSWER}[/tex]
Louis PasteurWho is Louis Pasteur?
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A simulation shows whether changing various weather conditions increases
the likelihood that a hurricane will form. Which type of model is this?
• A. It is mathematical.
•
B. It is physical.
• C. It is conceptual.
O D. It is computer-generated.
The type of model which shows the transformations of weather conditions that increase the likelihood that a hurricane will form is conceptual. Thus, the correct option is C.
What is Simulation?Simulation may be defined as a standard that is developed and designed to mimic the function and procedure of a current real-life system or genuine spectacle, so as to improve the knowledge to investigate, examine, and construct reported conclusions about it.
It shows the conceptual model of simulation because it demonstrates the association between the cause and the effect.
In the context of this question, the simulation which shows whether changing diverse weather conditions improves the probability that a hurricane will create is neglected.
Therefore, the correct option for this question is C.
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Fungi are divided into subgroups based on their methods of ____________.
Fungi are divided into subgroups based on their methods of sexual reproduction.
Fungi divisionFungi are divided into 4 groups, namely:
ChytridiomycotaZygomycotaAscomycotaBasidiomycotaThe division into the different groups is based on the methods of sexual reproduction used.
Zygomycota produce zygosporesAscomycota produce ascosporesBasidiomycota produce basidiosporesChytridiomycota produce diploid zoosporesMore on fungi can be found here: https://brainly.com/question/1261179
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Why is blood glucose self-monitoring preferred over urine glucose testing?
Blood glucose self-monitoring is preferred over urine glucose testing because it is more accurate.
What is glucose testing?Glucose testing refers to the methodologies to measure the amount of this simple carbohydrate in the body tissues/organs.
Glucose testing is fundamental to assess the diseases associated with the metabolism of this nutrient (e.g., diabetes)
In conclusion, blood glucose self-monitoring is preferred over urine glucose testing because it is more accurate.
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The common health-associated infection seen in an outpatient setting, called mrsa, is caused by which type of bacteria?.
Methicillin-resistant-staphylococcus-aureus (MRSA) infection is caused by the bacteria called staphylococcus aureus, which leads to skin infections in mild form and respiratory diseases in severe form.
Hospital-Acquired MRSA – is associated with infections that are caused due to exposure to hospital or nursing home environments.The infection can be caught through direct contact or contaminated hands. Sometimes touching used surgical instruments or infected bedsheets can also pass on the infection leading to severe pneumonia or blood infections. Hence, people hospitalized for longer durations, live in nursing homes, or visit hospitals regularly without protection are prone to get a staph infection.Hospital acquired MRSA often causes severe symptoms compared to community-acquired MRSA due to prolonged exposure to bacteria.learn more about MRSA here: https://brainly.com/question/8190489
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The most common use of radioactive isotopes in medicine is to diagnose disease. Typically, radioactive materials are injected into the body and then radiation-detecting cameras are used to build images of affected body parts or particular types of cells. This equation models the amount of a radioactive isotope in the bloodstream minutes after it is injected:
Radioactive substances are employed in therapy to destroy malignant tissue, shrink a tumor, or lessen discomfort.
What is the radioactive elements?Two or more chemical species of an element with varying atomic masses and unstable nuclei are referred to as radioactive isotopes. Because of the excess radiation that these isotopes produce in the form of alpha, beta, and gamma rays.
Nuclear medicine treatments use a tiny amount of radioactive substance called a radiopharmaceutical to assist diagnose and cure disorders. To identify disorders, some radiopharmaceuticals are utilized in conjunction with imaging technology. To reduce or eliminate a cancerous tumor, radiopharmaceuticals can also be injected close to the tumor inside the body.
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This skeleton belongs to americon museum of natural history.find out the name of the animals to which this skeleton lelongs.does this animal still exist
Answer:
na the animal don't exist in today's life
Clouds can decrease the range of daily temperatures because ________.
According to the research, low and thick clouds reflect solar radiation and help to send it back into space during the day.
What are the clouds?It is the mass of aqueous vapor that is suspended in the atmosphere that reflects solar radiation contributing to the cooling of the Earth's surface.
One of the determining factors of daily temperatures is the reflection of solar radiation by the clouds, when there are no clouds in the sky, diffuse radiation is produced through the process of diffusion through atmospheric particles.
Therefore, we can conclude that according to the research, low and thick clouds reflect solar radiation and help to send it back into space during the day.
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experiment in how to destarch the plant for photosynthesis
Answer:
all plants have starch in their green leaves so before we use the photo status experiment the intestinal stars present in it leave must be removed their for the plant must be discharge by keeping plant incompletely dark room for at least 3 days
An experiment consists of drawing two balls out of an urn with replacement. The urn has 1 red ball, 1 white ball, and 1 blue ball. How many possible outcomes have one white ball?
"Give two common characteristics of Archaea. Remember to use correct grammar and complete sentences" ASAP
Answer:
i thing this is answer
Explanation:
i thing so but i am not sure
research on the trait perspective on leadership in groups shows that:
Research on the trait perspective on leadership in groups shows that leaders are not born but develop.
What are genetic-environment trait relationships?Genetic-environment relationships makes reference to the contribution of genetic and environmental factors to a given trait.
Complex behavioral traits such as leadership are shaped by environmental factors.
In conclusion, research on the trait perspective on leadership in groups shows that leaders are not born but develop.
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What would most likely prevent the outside-in model from becoming an accepted scientific theory
Answer:
THE RESEARCH
Explanation:
Answer:
the research
Explanation:
How many ATP are generated from the E.T.C?
Thirty-four (34) ATP is generated from the electron transport chain.
The electron transport chainIt is one of the steps through which energy is extracted from glucose during respiration.
The first step is glycolysisThe second step is the citric acid cycleThe last step is the electron transport chainTwo molecules of ATP are generated from glycolysis, 2 are generated from the citric acid cycle, and 34 are generated from the electron transport chain.
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When using Triple Sugar Agar, select the coloration that can be expected with different bacterial growth (select all that apply). Group of answer choices Yellow butt with a red slant Yellow butt with a yellow slant Yellow butt with a green slant Purple slant Red butt with a red slant Black and red slant Metallic green slant Red butt and slant with bubbles
The coloration that can be expected with different bacterial growth when using Triple Sugar Agar are:
Yellow butt with a yellow slantYellow butt with a red slantWhat is bacteria?Bacteria are simple and microscopic organisms which are mostly pathogens of different infectious diseases
For growth to occur in bacteria, different kinds of nutrients are needed in the process called growth media.
Two different growth media which bacteria uses to grow are:
Liquid growth mediaSolid growth mediaIn conclusion; The coloration that can be expected with different bacterial growth when using Triple Sugar are Yellow butt with a yellow slant and Yellow butt with a red slant
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why does the structure of the plasma membrane make this type of transport neccesary for fluids
Explanation:
Both phospholipid molecules and embedded proteins are
able to diffuse rapidly and laterally in the membrane. The
fluidity of the plasma membrane is necessary for the
activities of certain enzymes and transport molecules
within the membrane .and also The plasma membrane, or the cell membrane, provides
protection for a cell. It also provides a fixed environment
inside the cell, and that membrane has several different
functions. One is to transport nutrients into the cell and
also to transport toxic substances out of the cell .
Endosymbiosis is considered
a(n)...
A. state.
B. experiment.
C. law.
D. theory.
Answer:
D. theory.
Endosymbiosis is considered a theory.
Explanation:
Endosymbiosis explains the origin of chloroplast and mitochondria, and it also explains how the eukaryotic cells came to be.
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If not, I am sorry.
a nucleus can be found in which type of cell?
a. prokaryotic cells
b. eukaryotic cells
c. all cells.
[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]
[tex]\qquad \tt \rightarrow \: b. Eukaryotic \:\: cells[/tex]
____________________________________
[tex] \large \tt Solution \: : [/tex]
Nucleus is only found in developed cells (eukaryotic cells), because they have well differentiated cell organelles and are mich developed.
where as, prokaryotic cells are primitive cells that have no distinguished organelles and many organelles aren't even present. they have genetic materials spread over in cytoplasm.
Hence, we can conclude that Nucleus can only be found in eukaryotic cells.
Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Answer:
b. eukaryotic cells
How does water move from the biosphere to the atmosphere in the water cycle
Answer:
The water cycle depicts the ongoing circulation of water inside the Earth and atmosphere. It is a complicated structure with several functions. Water vapor evaporates from liquid water, compresses to create clouds, and falls back to earth as rain and snow.
Explanation:
The water cycle is a cyclical process in which water circulates between the earth's atmosphere, seas, and surface via precipitation, drainage in lakes and rivers, and return to the earth's atmosphere by absorption and evaporation. Throughout respiration, organisms exhale carbon dioxide and water vapor, which evaporates back into the atmosphere.
Compare the origins of the common carotid arteries of the fetal pig with those of the human.
The comparison is that in humans, only one carotid arteries branches from the brachiocephalic artery while for the fetal pig, both arteries branches from the brachiocephalic artery.
What is the comparison of the Arteries?
The difference between the origins of the carotid arteries in the human heart and the fetal pig is that In a human, the right carotid arteries branches from the brachiocephalic artery, while the left common carotid artery comes directly out of the aortic arch.
Meanwhile, In the fetal pig, both carotid arteries branch from the brachiocephalic artery.
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In the Exploration, the color of the bugs evolves over the course of a few generations. Give another real world example which can support Darwin’s theory.
Dog with the good smell survive in the environment as compared to bad smell.
What is another example that supports Darwin's theory?Another example of Darwinian theory is that if dogs that have a good sense of smell are better able to survive as compared to dogs without a good sense of smell. So those dogs that have this ability increase in number because those with a bad sense of smell die out.
So we can conclude that dog with the good smell survive in the environment as compared to bad smell.
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What is the role of the eukaryotic promoter in transcription?.
Answer:
The purpose of the eukaryotic promoter is to bind transcription factors that control the initiation of transcription.
The promoter region can be short or quite long; the longer the promoter is, the more available space for proteins to bind
Question 1 (Multiple Choice Worth 2 points)
(04.06 MC)
A population of mice thrive when grain and seed resources are plentiful. When food runs out, they compete with
one another for food and no longer produce offspring. This is an example of
O biotic potential
O group behavior
O individual behavior
O interspecific competition
individual behavior
Explanation:
if the mice are competing with each other that means that it's every man for himself.
The given example suggests the individual behavior of the mice because they change their behavior according to conditions.
How a population of mice affects the resources?In nature, organisms search for resources first, and if this availability is fulfilled, they reproduce themselves and increase the number of offsprings, but when the availability of resources are depleted they compete with each other.
The individual behavior of the mice in the population is defined as some mice fighting for the same resources and others mating with each other.
In the given question interspecific competition is not a right choice because it is the competition between the organism of two different species for the same resources.
Therefore, option C is correct.
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What makes up muscle tissue?
organisms
organ system's
organs
O cells
Answer:
Cells
Explanation:
The basic unit of living things is cells , some cells make up tissues , tissues make organs and organs make organ system , in a normal human (organism) there are 11 organs .
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Dihybrid crosses
???
Answer:
The answer is 25% tall/green, 25% tall/white, 25% short/green and 25% short/white
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