Answer:
In the follicular phase, the follicles grow inside the ovary. The ovulatory phase is the time of greatest fertility for women. In it, estrogen levels peak just before the egg is released. In the luteal phase, after ovulation the follicular structure that remains in the ovary reorganizes and becomes a gland known as the corpus luteum. The self-determined life of the corpus luteum causes it to degenerate after 14 days and end a menstrual cycle. At the end of the luteal phase, progesterone and estrogen levels drop and menstruation occurs.
Explanation:
The follicular phase is where follicles develop (fluid-filled cavities in the ovary that contain an undeveloped egg) that will eventually house the egg. For the development of follicles, the body sends a signal to the brain to start the production of follicle stimulating hormone (FSH), the follicles begin to develop and produce estrogen. In the ovulatory phase, the level of estrogen in the body continues to rise, causing a rapid rise in LH. This increase causes the secretion of proteolytic enzymes that will degrade the follicular tissue allowing the maturation process of the ovum and its release to finish, a fact known as "ovulation". Ovulation usually occurs between 24 and 36 hours after the LH surge, so luteinizing hormone is a good factor for measuring the period of maximum fertility and knowing the fertile days of the woman. In the luteal phase, the corpus luteum develops that will last until a possible pregnancy or menstruation occurs, starting the next cycle. The egg, after being released, travels through the fallopian tube to the womb. It can survive up to 24 hours and sperm up to 5 days inside the uterus, therefore the days before ovulation and the day of ovulation itself, which can be calculated with the ovulation calendar, are those of maximum fertility and higher chances of pregnancy. After ovulation, the follicle begins to contract but continues to produce progesterone and begins to produce estrogen in order to continue preparing the uterus to receive the embryo.
Pesticide resistance is increasing, Farmers in the US tost 7% of their crops to pests in the 1940s, over the 1980s and 1990s, the loss
was 13%, despite more pesticides being used. It is estimated that 500-1000 pests have developed a resistance to pesticides. Consider
the diagram showing the evolution of pesticide resistance. Select ALL of the statements that do NOT accurately describe the
mechanisms of pesticide resistance shown in the graphic.
A)Insects that are sensitive to the pesticide all die out after the first
application, leaving only the resistant insects in the population,
B)When insects are exposed to the pesticide, some will develop a mutationmaking it resistant. Only these insects survive in the next generation
C)The first generation has an insect with a gene responsible for resistance toa pesticide. This allows it to survive the pesticide application and reproduce
D)The insect with the pesticide resistance gene reproduces. Because these insects are more likely to survive pesticide application, insects with this
trait become more prominent in the population
E)As a population of insects is exposed to a pesticide, those susceptible to
the pesticide will die out of the population, leaving those with a resistance
to survive and reproduce, becoming more common in the population
The insect with the pesticide resistance gene reproduces, these insects are more likely to survive pesticide application hence insects with this trait become more prominent in the population
What is a pesticide?A pesticide refers to a chemical that is used to control the spread of pests in the farm.
The question is incomplete but I will help you the much I can. We know that organisms that have favorable traits live long enough to reproduce and pass on these favorable traits to the next generation. Therefore, the insect with the pesticide resistance gene reproduces. Because these insects are more likely to survive pesticide application, insects with this trait become more prominent in the population
Learn more about pesticide: https://brainly.com/question/1388366
which statement best describes the reaction force?
Answer:
I believe the awnser is; The reaction force is the force of the ball away from the racket
I will give brain to correct answer!
When guard cells are full, they bulge. This increases the
size of the gap between them and opens the hole in the
leaf.
Which object is the best model of a guard cell?
A.) Straw
B.) Garden hose
C.) Water Balloon
D.) Strainer
The best model of a guard cell is Water Balloon. Thus, option "C" is the correct answer.
What is Transpiration?Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.
Transpiration is essentially evaporation of water from plant leaves. Transpiration is important because water is needed for photosynthesis and because water cools a plant off.
Thus, option "C" is the correct answer.
To learn more about transpiration click here:
https://brainly.com/question/2951421
#SPJ2
What time of year does everywhere on Earth receive an (almost) equal amount of daytime sunlight? Why does this occur?
Answer:
September Equinox
Explanation:
it occurs when the sun crosses the celestial equator from north to south
Match these organisms to the terms that best describe them.
diatoms
nitrogen fixers
jellyfish
zooplankton
whales
nekton
cyanobacteria
phytoplankton
Answer:
nitrogen fixers------cyanobacteria
jellyfish--------------- nekton
zooplankton ----- phytoplankton
whales----------- nekton
Explanation:
Diatoms are single-celled algae that live in houses made of glass. They are the only organism on the planet with cell walls composed of transparent, opaline silica. Cyanobacteria is also called nitrogen fixers because cyanobacteria fixes atmospheric nitrogen in the soil in the available forms of nitrogen to the plants. Whales and jellyfish are nekton because they move in the water independently. Zooplankton feed on phytoplankton for gaining energy and survival.
Answer:
nitrogen fixers------cyanobacteria
jellyfish--------------- phytoplankton
zooplankton ----- diatoms
whales----------- nekton
Explanation:
im pretty sure that is right
Please help!!!! Pretty sure this is, like, a month overdue!!!
Answer:
A
Explanation:
An adaption is when they are getting comfortable and learning to live in the environment. Therefore, answer A is the best solution.
Which of the following statements about natural selection is FALSE? *
a. Natural Selection occurs when organisms with better fitness for an environment survive and reproduce at a greater rate than others.
b. Scientists have evidence that natural selection is continuing to occur even today.
c. Natural selection causes individuals to change the trait they are born with to adapt to a new environment.
d. Natural selection is not a random phenomenon and is a critical part of the theory of evolution.
Answer:
a.
Explanation:
the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
what are the effects of natural hazards?
Explanation:
effect of naqtural had aaira xhina bey m
How are meiosis and mitosis different?
Answer:
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
Explanation:
:)
Answer: Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
. Most of these differences relate back to the fact that, although both are needed for cell replication, mitosis and meiosis have different purposes: mitosis replaces body cells with identical copies, while meiosis creates genetically different sex cells that will be used to create an entirely new organism.
Explanation:
Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is a(n) Group of answer choices post-zygotic barrier to reproduction. sympatric barrier to reproduction. pre-zygotic barrier to reproduction. allopatric barrier to reproduction. good thing.
Answer:
The correct answer is ''post-zygotic barrier to reproduction''
Explanation:
Biological barriers prevent the exchange of genes between two or more populations, a postzygotic reproductive barrier reduces the survival or reproduction of hybrid offspring. In hybrid non-viability there is low survival of the hybrid, especially during embryonic stages. On the other hand, the sterility of the hybrid occurs when the fertilized egg develops into a healthy but sterile adult. Segregation of aneuploid gametes during meiosis, different gene associations occur on the chromosomes of the parents.
What is the relationship between the temperature of internal material and volcanic eruptions?
plz help.....
Answer:
Direct relationship.
Explanation:
There is direct relationship between the temperature of internal material and volcanic eruptions because the temperature of internal material causes the volcanic eruptions. The temperature of the internal material puts pressure on the rocky surface and the gases that releases from heating processes will cause pressure which leads to the eruption of the volcano so we can say that there is a direct relationship between temperature and eruption.
5 rules on how a feigned creature inherits traits
Answer:
Inherited traits include things such as hair color, eye color, muscle structure, bone structure, and even features like the shape of a nose. Inheritable traits are traits that get passed down from generation to the next generation. This might include things like passing red hair down in a family.
Explanation:
I NEED THIS QUESTIONS IS FOR TODAY HELP!!!!
NO LINKS PLEASE PLEASE!!
Answer:
Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range.
Explanation:
Sediments are NOT _______________. Group of answer choices A. Salt in a river B. Nutrients in a river C. Earth material in a river D. Oil mix in river water
Answer the question
In the carbon cycle, all animals must consume other organisms because
A. they cannot absorb carbon from the air.
B plants are better at absorbing carbon from the air than animals.
C they can only absorb carbon from the air at high temperatures.
sunlight is required to absorb carbon from the air, and some animals live
underground
Answer:
b plants are better at absorbing carbon from the aur than animals
mrna used in a sentence
Answer:
The mRNA was positively corresponding with its simultaneous serum levels
Explanation:
Hope this helps!
Please help me answer this question
Answer:
35 Phyla
Explanation:
This is somewhat debated but the correct answer is 35 as this is the most agreed upon number and is closest to the alternate numbers
PLEASE HELP I NEED THIS TO PASS
Some organisms have a large geographic range. For example, the Norway rat lives on every continent except Antarctica A population of Norway rats is the number of rats in one particular area. Do you think it's scientifically possible for a population of Norway rats in North America to carry different genetic mutations than a population of Norway rats in Africa? Do you think it's possible that they carry some of the same mutations? What types of information can scientists learn by studying the genomes of these two populations of rats?
What are some things that determine human traits
Answer:
Traits are determined by genes, and also they are determined by the interaction with the environment with genes. And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA.
What types of food molecules make up chicken? (Carbs, Proteins, and/or Fats?)
no links!!
but its fats right??
Answer:
Fats
Explanation:
Chicken contains many different amino acids with different R-groups. In particular, chicken contains a large number of Tryptophan amino acids, which are amino acids that contain the side chain known as “indole”.
The type of food molecules that make up chicken is Proteins. It generally contains about 20% of proteins.
What do you mean by Food molecules?Food molecules are those which give energy to living organisms and contain chemicals that are required for the growth and repair of cells and their functions in the body of living organisms.
Proteins are the polymers of amino acids, which are linked via peptide bonds. The side chains of amino acids are varied from one to another. These side chains provide stability to the amino acid sequence. Mostly, the side chain of tryptophan and arginine gives the makeup to the food molecules of chicken.
Therefore, the type of food molecules that make up chicken is Proteins.
To learn more about Proteins, refer to the link:
https://brainly.com/question/1093077
What do I put in the squares?
Explanation:
I wrote out an explanation but it said "Rude! We don't use such words here. Please change it". I honestly don't know what word i couldn't use but I just could not post it. I tried changing any words that may have caused it but it did not fix the issue. So here are the answers only.
hii! i’ll give brainliest pls help
Answer:
This looks like an earthquake
Explanation:
There doesn’t seem to be very much water present in the image which would be the cause for the rest of them
Hope this helps
Answer:
Earthquake
Explanation:
First off I wouldn't say landslide because if it was a landslide in more than likely would have cracked the concrete on the floor that the people are standing on and there would be more of a mess than what is show in the picture. Next I wouldn't say tsunami depending on how frequent this disaster was, if it was a tsunami more than likely most of that rubbish would have been soaked with water in other things that were in the water as well and I wouldn't say flood either because once again nothing is soaked with water with in that picture not even the concrete that the people are standing on so I say that the most reasonable answer would be earthquake due to them being know for destroying buildings alot.
During which days of the menstrual cycle does
the level of FSH increase? What happens to the
follicle during this time?
Answer:
a menstrual cycle is considered to begin on the first day of the period the average cycle is 28 days long
Just need to identify this stuff
Answer:
ok!
Explanation:
Organic debris- PP
Aquatic plants- PP
Aquatic insects- primary consumer
Crayfish- primary consumer
Larger fish- secondary consumer
Small fish- secondary consumer
Osprey- tertiary consumer
Bald eagle- seconday consumer
Seagull- secondary consumer
Rodent- primary consumer
Seal- tertiary consumer
Nothern Harriet- secondary consumer
Plant seeds and roots- PP
hope this helps do telll me if any of them r wrong! :D
What happens during synapsis?
A. gene recombination
B. DNA replicates
C. the cell divides
D. centrioles move to the poles
Answer:
C
Explanation:
Which lake zone has phytoplankton?
A. Limenetic
B. Profundal
C. Benthic
D. Intertidal
Answer:
Option A is the correct one.
Explanation:
limnetic zone
The limnetic zone is the most photosynthetically-active zone of a lake since it is the primary habitat for planktonic species. Because phytoplankton populations are densest here, it is the zone most heavily responsible for oxygen production within the aquatic ecosystem
What is the percentage of the offspring?!
Answer:
50% AO, 50% BO
Explanation:
there are 2/4 that are of AO blood, and 2/4 are of BO blood.
2/4 is equivalent to 50%
Explain how the super bug was created
Answer:
A superbug refers to a germ that has formed resistance to multiple drugs that once treated the infection caused by the germ. The term “superbug” was developed by social media. While any germ may become a superbug, bacterial and fungal strains that routinely infect humans, animals, and crops are most likely to do so.
Explanation:
Name the organs of the respiratory system
Answer:
Explanation:
Nose.
Mouth.
Larynx.
Pharynx.
Lungs.
Diaphragm.
Answer: The organs of the respiratory system are
Nose
Mouth
Throat (pharynx)
Voice box (larynx)
Windpipe (trachea)
Large airways (bronchi)
Small airways (bronchioles)
Lungs
Explanation:
Plz mark as Brainliest
Hope this helps :)