Answer:
The correct answer is - option B. The increase in testosterone prevents further production of GnRH, FSH, and LH
Explanation:
The high level of testosterone hormone produced by the testes shows a negative feedback system in males as an increase in this hormone leads to the inhibition of the GnRH from the hypothalamus and which in turn inhibits the production of the fH and FSH from the pituiyary gland.
This process in a negative feedback system which prevents the production of hormone by released by the same hormone. It leads to slow spermatogenesis
Sharee had been ill for three days. When her mother took her to the doctor, the doctor decided not to prescribe an antibiotic. He said Sharee had a virus. Which claim explains why antibiotics are not able to cure viral infections?
A. Antibiotics kill bacteria, not viruses.
B. Antibiotics target only white blood cells.
C. Antibiotics are not used to fight any infections.
D. Antibiotics cause fevers that make viruses stronger.
What microscopic structures make up organisms such as humans (you)?
Answer:
cells are the smallest structural units of living matter and compose all living things.
what are some precautions that should be taken when doing diffusion experiment with ( potassium permanganate)?
Answer:
Our answer to this would be
Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed. Keep away from sources of ignition - No smoking.Explanation:
found on G O O G L E hope this helps :)
All of the following contribute to the severity of the effects of natural disasters during modern times except
A) choices in land use
B) evacuation and disaster relief plans
C dramatic increase in human populations
D predictability of natural disasters
E) people choosing to live in areas at high risk for hazards
Answer:
its B
Explanation:
i hope i help :)
I’ll mark you as brainliest
hypotonic solution is the answer
Which pair is correct?
a. G2 phase, preparation for mitosis
b. G1 phase, DNA replication
c. M phase, cell growth
d. S phase, cell division
A pair that is correct with respect to the cell cycle is the G2 phase, preparation for mitosis.
What do you mean by Cell cycle?The Cell cycle may be defined as the entire sequence of events happening from the end of one nuclear division to the beginning of the next.
In the G1 phase of the cell cycle, the cell grows in size and synthesizes mRNA as well as proteins which are required for DNA synthesis.
M-phase governs the nuclear division (Karyokinesis), and cytoplasm division ( cytokinesis).
S-phase is known to double the amount of genetic content within the cell.
Therefore, a pair that is correct with respect to the cell cycle is the G2 phase, preparation for mitosis.
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PLEASE PUT THEM IN THE CORRECT PLACE!!!
The physical appearance or the way a gene looks is known as its.... A. Gene B.Allele C.Phenotype D.genotype
Which of the following is best for representing a time period in which an organism could evolve (for evolution to happen)? A 3,000 days B 2 decades C 10,000 years D 275 years
Answer:
C] 10,000 years
Explanation:
It usually takes a million or more years. The longer, the more identifiable.
A student made a model of an ecosystem inside a sealed plastic bottle. She
placed soil, rocks, water, plants, and animals inside the bottle. How is the
model unlike a natural ecosystem?
A. The model has more consumers than a natural ecosystem.
B. The model lacks the producers found in a natural ecosystem.
C. The model has more predators than a natural ecosystem.
D. The model lacks the diversity found in a natural ecosystem.
The model lacks the diversity found in a natural ecosystem.
What is a natural ecosystem?A natural ecosystem is made up of living and non living parts. Energy is cycled in the system along the food chain from one organism to another.
Thus the model that is made by the student is unlike a natural ecosystem in the sense that the model lacks the diversity found in a natural ecosystem.
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Answer:
D. The model lacks the diversity found in a natural ecosystem.
Explanation:
Vaccinations can help build immunity. Vaccines stimulate the body to make an immune response. What is in a vaccine that causes the immune system to respond?
antibiotic
antiviral drug
spinach
killed or weakened pathogen
Answer:
killed or weakend pathogen
Explanation:
I play Doc on siege
Explain how the energy would flow between the following organisms: A fox,
grass, and a rabbit.
Answer:
grass----- rabbit----- fox
Explanation:
A food chain always starts with a producer, which is an organism that makes food. This is usually a green plant, because plants can make their own food by photosynthesis. A food chain ends with a consumer, which is an animal that eats a plant or another animal.
Green plants are producers
They are the first link in all food chains
Plant cells contain chlorophyll and can photosynthesise
Photosynthesis produces glucose and oxygen
Animals are consumers
If they eat plants, they are the first-order consumers or herbivores
The chemical energy in the green plants is transferred to the animal when it eats the plant .
Which microorganism among the following is not associated with nitrogen cycle?
penicillin
acetobacter
rhizobium
blue-green algae
Answer:
Penicillin
Explanation:
Penicillin is not associated with nitrogen fixing bacteria because it is an antibiotics. It is an antibiotic that is developed to treat some bacteria infections like pneumonia. It is use to treat infections that are caused by bacteria and it is gotten or produced from penicillin mold. Therefore, it is not in one way or the other associated to nitrogen cycle.
please help me with this question:(
Reviewing Vocabulary
Match each term with its correct definition
the movement of organisms out of a
emigration
populatiser of organisms bom into a
population in a given time
death rate
birth rate
the movement of organisms into a
populatiser of organisms that die in a
population in a given time
mmigration
Done
Answer:
Emigration is the first option, death rate is the last option, birth rate is the second option, and immigration is the third option.
Water molecule, H2O Oxygen molecule, O2
When the two substances are put in the same container, they do not attract
each other. Why does this happen?
O A. They both contain oxygen.
B. They contain different elements,
C. One is polar, and one is nonpolar.
O D. They are both nonpolar.
Some species have difficulty adapting to environmental changes and will struggle to survive. If a species is unable to adapt, its population size will decrease until it
becomes
extinct
adapted
reborn
Answer:
until it becomes extinct
how does natural selection contribute to evolution?
☁️ Answer ☁️
Natural selection leads to evolution because the traits of those who are able to reproduce influence future generations genetics and gradually lead to these passed on traits becoming the normal state of being, thus causing the species in question to evolve.
Hope it helps.
Have a nice day hyung!~ ￣▽￣❤️
The picture below is associated with which biomolecule?
protein
carbohydrate
lipid
nucleic acid
Carbohydrates is ur answer mate
A car accelerates from 20 yards per second (yds/s) to 35 yds/s between street lights over 5 seconds. What is the car's acceleration?
What would the phenotype be for an individual who is heterozygous
B = brown eyes b = blue eyes
Answer:
The phenotype would be brown eyes.
Explanation:
Dominant alleles always show up above recessive alleles. since brown is dominant brown will show.
Answer:
it would be B = brown eyes
the way i look at this is when the symbol is capitalized it's dominant! and when it's lowercase, it's recessive. :)
hope this helps!
How does human activity impact Earth's systems such as deforestation,
urbanization, desertification, erosion, air and water quality, and
alternating the flow of water? ***Please use full sentences.****
Please answer
What is the difference between a unicellular organism and multicellular organism?
Select one:
a. Unicellular organisms are made up of a single cell, while multicellular organisms are made up of several cells.
b. Unicellular organisms are not living, while multicellular organisms are living.
c. Unicellular organisms are highly organized into tissues and organs, while multicellular organisms are simple.
d. Unicellular organisms do not need water, while multicellular organisms do need water.
Answer:
A.
Explanation:
From the name, "unicellular" you can deduce that "uni" means one, and vice versa for multicellular "multi".
The diagram below shows a type of virus called a bacteriophage. Select the name of the structure that the virus can use inside a host cell to produce new virus particles.
Answer:
It's the DNA..........
The structure that the virus can use inside a host cell to produce new virus particles is the DNA.
Bacteriophage which literally means bacteria eater is a type of virus that has the ability to infect bacteria.
Basically all bacteriophages consist of nucleic acid molecule (DNA) which is surrounded by a protein coat( the capsid head).
It also possess a tail sheath through which it transfers it's DNA into host cell.
Eventually, new bacteriophages assemble and burst out of the bacterium in a process called lysis.
Therefore, the structure that the virus can use inside a host cell to produce new virus particles is the DNA.
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What force was eliminated in the demonstration?
What happens when cellular division is not regulated?
Answer:
the parts of our body cannot function properly
What are some of the roles of proteins in the human body?
Are the oldest rock on the highest or lowest stratum?
Answer:
The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top.
Explanation:
The principle of superposition states that in an undeformed sequence of sedimentary rocks, each layer of rock is older than the one above it and younger than the one below it (Figures 1 and 2). Accordingly, the oldest rocks in a sequence are at the bottom and the youngest rocks are at the top.
☁️ Answer ☁️
Lowest.
the lowest stratum tend to have the slowest-moving creatures; above them are faster ones. Evolutionary scientists declare these lowest strata are many millions of years old (570 million for the oldest, the Cambrian), and the topmost to be the most recent.
Hope it helps.
Have a nice day noona!~ ￣▽￣❤️
Since pesticides run off from
several farms and fields can make its
way to are waterways such as rivers,
lakes, and oceans, what type of pollutant
are they considered to be?
I know this is supposed to be a question but the answer is a Non-Point solution.
Answer:
It can also clog the gills of fish or smother fish larvae. In addition, other pollutants like fertilizers, pesticides, and heavy metals are often attached to the soil particles and wash into the water bodies, causing algal blooms and depleted oxygen, which is deadly to most aquatic life.Nutrients like nitrogen and phosphorus are essential for growing crops, but they can also trigger algal growth in rivers, lakes and bays. Agricultural runoff flows into the lakes and rivers that hundreds of towns draw their water from.Runoff picks up fertilizer, oil, pesticides, dirt, bacteria and other pollutants as it makes its way through storm drains and ditches - untreated - to our streams, rivers, lakes and the ocean. Reducing runoff can help prevent water pollution, reduce flooding, and protect our precious drinking water resources.
Explanation:
Stormwater runoff can also wash sediment, nutrients or other pollutants into water sources. Increased sediment, nutrients and other pollutants can diminish water quality, threaten drinking water sources, and complicate water treatment processes.
Which of these is NOT a reason to take photographs of a crime scene?
A to document the relative locations and positions of evidence
B some evidence can not be collected
C some evidence does not last / is temporary
D once evidence is used in court it is thrown away, and photographs allow CSI to study evidence years later
the answer would be d hope thos helps
The one that is not a reason to take photographs of a crime scene is once evidence is used in court it is thrown away, and photographs allow CSI to study evidence years later. The correct option is d.
What is an evidence?They photograph and physically measure the scene, identify and collect forensic evidence, and keep the evidence in the proper chain of custody.
Fingerprints, footprints, blood and other bodily fluids, hairs, fibers, and fire debris are all gathered by crime scene investigators all are included.
While the most obvious goal of crime scene photography is to create a visual record of the crime scene and all of its relevant features, the best example of photography's role is the presentation of a logical story.
The one reason not to photograph a crime scene is that the evidence is used in court, it is discarded, and photographs allow CSI to study evidence years later.
Thus, the correct option is d.
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