Estrogens are hormones that are play important roles in the reproductive system.
What are the roles played by estrogen?The environmental estrogen introduced to the male cells has the ability to recognise the binding sites of the receptors on the male cells.
They are able to attach the the cell membranes by its ability to bind to the cell receptors.
When the binding occurs, there would be a conformational change within the cell leading to:
modulation of protein synthesis anddevelopment of the female secondary reproductive characteristics.Learn more about cell membrane here:
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If you have black hair and
someone else.has red hair these
are two versions of the same
gene, what is this called
scientifically?
Answer:
Codominance
Explanation:
In genetics, codominance refers to a type of inheritance in which two variants (alleles) of the same gene are expressed differently in one individual, resulting in different phenotypes.
Explain what type of ratio is needed to have maximum efficiency for the cel
Answer:
surface area to volume (SA:V) is the ratio that is needed to have maximum efficiency for the cell
Why is it a good idea to study experimental subjects in their natural environment? OA. So that a specific problem can be solved as quickly as possible OB. So that the experiment is cheaper and easier to conduct C. So that they respond to the test as they would under normal conditions O D. So that no one else will know what is being studied
If the chordae tendineae in the right side of the heart were damaged, it might cause blood to leak into the:
Answer:
Right Atrium
Explanation:
Chordae tendinae are located in the ventricles of the heart. Their function is to prevent the valves between the ventricles and atria from opening the wrong way. Damage to them would cause the valve flaps to open during ventricular systole, sending blood back into the atria.
1. Can a single organism change its traits to become better suited for its environment during its lifetime? (highlight one) YES or NO
Answer:
check explanation
Explanation:
If you are talking about adapting to an environment then yes, like how we train to strengthen our muscles to get stronger. If you mean by evolving then no, a single organism can not evolve their traits in a lifetime, like a human can't naturally grow gills to breathe underwater
HELP ME IM ALMOST DONE
Answer:
option B
should be right answer for the question
Answer: B
Explanation:
Although the integument is a covering, it is by no means simple, and some of its functions include Group of answer choices epidermal blood vessels serving as a blood reservoir. the dermis providing the major mechanical barrier to chemicals, water and other external substances resident macrophage-like cells whose function is to ingest foreign invaders and present them to the immune system cooling the body by increasing the action of sebaceous glands during high temperature conditions
The functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
What is the integumentary system?The integumentary system is a physical barrier that separates the body from the external environment.
This barrier (integumentary system) is fundamental for the immune system due to the presence of macrophage-like cells.
In conclusion, the functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
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Answer:
Explanation:
Evidencia de los colonos de Washington
What is a feedback mechanism?
What is a feedback mechanism?
A feedback mechanism is a physiological regulation system in a living body that works to return the body to its normal internal state, or commonly known as homeostasis. In nature, feedback mechanisms can be found in a variety of environments and animal types. Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself.
Examples:
Menstrual cycle. At the beginning of the menstrual cycle, the ovaries release the hormone estrogen. The estrogen acts as a stimulus for the positive feedback loop. ...Childbirth. Figure: Normal childbirth is driven by a positive feedback loop.
what are ways we affect the environment positively
Answer:
Cutting down trees and littering have a negative effect on animals and plants. Protecting endangered species and cleaning lakes and seas has a positive effect on the environment. At home you can help the planet by recycling waste and growing plants or vegetables
The images show two different types of Galapagos tortoises that scientists believe descended from the same species. The first type (left) are found on islands that have high vegetation and few grasses. The second type (right) are found on an island that has large amounts of grasses and low-lying shrubs. What explains the type of turtle found on the islands with high vegetation?
A.
The environment triggered a gene mutation in neck length in order to help the turtle survive.
B.
Mutations are random, so it is by chance that turtles with longer necks live on these islands.
C.
Turtles with genes for long necks had a better chance of surviving to reach reproductive age.
D.
Turtles with short necks completely lacked adaptations for finding food, so they died off.
Turtles with genes for long necks had a better chance of surviving to reach reproductive age due to ability to reach the food source.
What type of turtle survive on the Island?Turtles with genes for long necks had a better chance of surviving to reach reproductive age because the long neck enables the turtles to reach the food source that is present on a certain height. So they are able to survive and complete its life cycle.
So we can conclude that option C is the right answer.
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"The images show two different types of Galapagos tortoises that scientists believe descended from the same species." the type of turtle found on the islands with high vegetation. Turtles with genes for long necks had a better chance of surviving to reach reproductive age. Option C. This is further explained below.
What is the Galapagos tortoise?Generally, the Galapagos tortoise is simply defined as the Galápagos gigantic tortoise, belongs to the genus Chelonoidis and is the largest species of tortoise.
In conclusion, a turtle species typical to islands with dense flora. Those turtles that had the genes for a longer neck were more likely to live to reproduce.
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How does water cycles involve biotic and abiotic factors?
Answer:
This recycling process involves both the living organisms (biotic components) and nonliving things (abiotic factors) in the ecosystem. Through biogeochemical cycles, water and other chemical elements are constantly being passed through living organisms to non-living matter and back again, over and over.
Explanation:
How does the circulatory and respiratory system work together?
plase help and thanks.
As human populations have changed over the years, people have altered the course of rivers and other waterways to better suit their needs. one approach has been through the damming of certain rivers. over time, many people question whether this effort has been beneficial. what are the negative impacts of damming a river that are being assessed?
dams allow more water to flow into nearby reservoirs, increasing the chances of disease transmission.
dams cause increases in salmon populations because more water is available for them to live in.
dams reduce salmon stocks, which reduces revenue and overall whale populations.
dams allow for invasive species to move around more easily, which reduces biodiversity.
Dams allowing more water to flow into nearby reservoirs thereby increasing the chances of disease transmission is its negative impact and is denoted as option A.
What is a Dam?This is a form of barrier which restricts the flow of water for different reasons such as reservoirs, electricity generation etc.
Since the water flows to reservoirs in close proximity, it increases the risk of disease transmission such as malaria etc.
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The rise in herd immunity amongst a population can be directly attributed to antibiotic-resistant microorganisms. vaccinations. increased use of antibiotics. improved handwashing. None of the answers is correct.
The rise in herd immunity amongst a population can be directly attributed to vaccinations. Details about vaccination can be found below.
What is vaccination?Vaccination is the inoculation with a vaccine, in order to protect from a particular disease or strain of disease
A vaccine is a substance given to stimulate the body's production of antibodies and provide immunity against a disease without causing the disease itself in the treatment, prepared from the agent that causes the disease.
Therefore, it can be said that rise in herd immunity amongst a population can be directly attributed to vaccinations.
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Carbon can be found in shells and
rock at the bottom of
sedimentary
oceans in the form of...
A. carbonic acid.
B. calcium carbonate.
C. carbon dioxide.
ہے
Answer:
B IS THE ANSWER
Explanation:
I THINK SO
The prefix "deka" is used to designate which power of ten?
21
9
6
1
A person cannot produce several types of lipases and amylases. name a problem this individual would have and explain why.
A person cannot produce lipases and amylase due to mutations in the genes that encode enzymes required to break down fats and starch.
What are lipases and amylase?Lipases and amylase are two types of enzymes required to break down fats and starch, respectively.
Mutations in the genes that encode these enzymes may lead to the production of defective proteins.
In conclusion, a person cannot produce lipases and amylase due to mutations in the genes that encode enzymes required to break down fats and starch.
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Which of the following are Phylogenetic trees also know as ?
What would be the percentage of Thymine (T) based on the following data
of wheat DNA:
A%= 27.3 C %= 22.7 G%=22.8 T%=??
Answer:
T%=27.2
Explanation:
This is because if you add 27.2% to the percentages given on the statement it all adds up 100% or A and T must equal to the same or close percentage as they are complementary to each other
Which structure controls what enters and leaves the cell?
A) cell membrane
B mitochondria
c) cell wall
D nucleus
The "Cell Membrane" controls what enters and exits the cell and thus protects the cell.
Answer: A: The cell membrane
Explanation: Hope this helps!
The Arctic Ocean is considered part of
the
A. atmosphere.
B. troposphere.
C. lithosphere.
D. hydrosphere.
Answer:
i think A: atmosphere is the ans
The Arctic Ocean can be considered a fundamental part or player of the hydrosphere (Option D).
What is the hydrosphere?Hydrosphere refers to all water bodies present on the Earth, including oceans such as the Arctic Ocean.
This part of Earth (hydrosphere) plays a fundamental role in the homeostasis or state of equilibrium of the ecosystems.
In conclusion, the Arctic Ocean can be considered a fundamental part or player of the hydrosphere (Option D).
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I need help. The class of macromolecule that would most likely be involved in contracting muscles would be ?
1. The ribosomes of which of these pairs of organisms would be expected to be most similar?
A.
Libytheinae and Charazinae
B.
Libytheinae and Calinaginae
C.
Satyrinae and Calinaginae
D.
Satyrinae and Charazinae
2.The data presented would best support the theory of evolution if which of the following were also true?
A.
The Nymphalidae are more advanced than other butterflies.
B.
The Nymphalidae have more mutations than other butterflies.
C.
The Nymphalidae share a common ancestor with other butterflies.
D.
The Nymphalidae live in different geographies from other butterflies.
In this case, the ribosomes organelles of Satyrinae and Charazinae are expected to be most similar.
What is evolution?Evolution refers to the descendence with modification and therefore differences are lesser in close species.
According to the tree, the statement 'Nymphalidae share a common ancestor with other butterflies' best supports the theory of evolution.
In conclusion, in this case, the ribosomes organelles of Satyrinae and Charazinae are expected to be most similar.
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write three characteristics of fungi
[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{What \: is \: fungi?}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
Fungi is single celled micro organism, which grows in plants or soil. Fungi can be mostly found on soil or dead plants or dead matter.
[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{Write \: three \: characteristics \: of \: fungi}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
[tex]\green\star[/tex]Three characteristics of Fungi are:
Fungi reproduce through spores. Fungi are mostly Eukaryotic or single celled. Fungi can play major role in recycling.[tex] \boxed{ \frak \red{brainlysamurai}}[/tex]
How can something that happens in a terrestrial system affect an aquatic system? Give an example.
Answer:
Strong hydrologic connections among terrestrial and inland aquatic realms exist in both river floodplains and dryland ecosystems. In the evolution of river floodplains terrestrial vegetation diversifies inland aquatic habitats, providing a range of colonization options for different organisms
Explanation:
The sides of the DNA ladder are made up of a phosphate and:
a sugar called deoxyribose
a plasma called hemoglobin
a chemical called neuclaic acid
an acid called chlorophyll
Answer:
A sugar called deoxyribose.
Explanation:
DNA is made up of molecules called "nucleotides". These are:
A phosphate groupA pentose sugar [deoxyribose]A nitrogen-containing base [adenine, thymine, guanine and cytosine]Thus the first option is the right answer.
Reasons why the other options are wrong:
"A plasma called haemoglobin" is wrong as plasma and haemoglobin are related to the blood.
"A chemical called nucleic acid" is wrong as it is not what DNA's made up of. DNA and RNA are nucleic acids themselves.
"An acid called chlorophyll" is wrong as chlorophyll is related to plants.
what is ecological succession?
Answer:
Yellow
Explanation:
The change an ecosystem experiences over time
The change in ecosystem experiences over time.
In simpler words, the process in which there is a change in species, as well as habitat, occurs over some time.
A scientist is studying an aquarium ecosystem that contains water, plants, and fish that eat those plants. The aquarium has glass walls so light can get in, but it is sealed so no material can move into or out of the tank. When the scientist turned the aquarium's light on, carbon dioxide in the water started decreasing. How is carbon moving and what is happening to the amount of carbon in the living things inside the aquarium? Explain your thinking as completely as possible.
PLEASE PLEASE PLEASE CAN SOMEONE HELP ME WITH THIS QUESTION!!!
IT'S DUE IN LESS THAN 15 MINUTES
Carbon moving and what is happening to the amount of carbon in the living things inside the aquarium is by photosynthesis.
What is aquarium?
An aquarium (plural aquariums or aquaria) is a vivarium, usually contained in a clear-sided container (typically constructed of glass or high-strength plastic) in which water-dwelling plants and animals (usually fish).
According to this question, the aquarium contains water, plants and fish. The glass of the aquarium is transparent and allows the passage of light. Plants are unique set of organisms that have the ability to produce their own food (organic molecule) using the energy from light which they absorb via the Chlorophyll pigment in their Chloroplast. This process carried out by plants is called PHOTOSYNTHESIS.
The amount of carbon in form of carbondioxide (CO2) decreases when the light was switched on in the aquarium due to the process of photosynthesis carried out by the plants.
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