Answer:
option D
A chemical message secreted by a gland.
Explaination: A hormone is a chemical that is made by specialist cells, usually within an endocrine gland, and it is released into the bloodstream to send a message to another part of the body. It is often referred to as a 'chemical messenger'.
Which of the following elements will not easily react with other elements? Explain why? – Carbon, Hydrogen, Nitrogen, Helium.
Answer:
Helium
It will not easily react with other elements as it is a noble gas. it has complete octate .the reactivity of an element depends on its outer most electron, ( or valency of it) but in helium there is no electron left to react.
the 5’ end of the dna molecule is considered ____, while the 3’ end of the dna molecule is considered the _____
The 5’ end of the dna molecule is considered five prime, while the 3’ end of the dna molecule is considered the three prime.
Thus, The backbones of DNA's two long polymers of basic units, known as nucleotides, are comprised of sugars and phosphate groups that are connected by ester bonds.
These two strands are anti-parallel because they move in the opposite directions of one another. Each sugar has one of four different nucleobases (bases) molecules attached to it.
The genetic code is made up of the order of these bases, and it subsequently dictates the order of the amino acids in proteins. The 5′ (five prime) and 3′ (three prime) ends of DNA strands are referred to as the ends.
Thus, The 5’ end of the dna molecule is considered five prime, while the 3’ end of the dna molecule is considered the three prime.
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fill in the blank blank factors depend on the number of organisms in a given area
Answer:
5 because those organisms multipliy or expand
Which factor is MOST likely to have contributed to the high fertility rate in Africa?
A-many Economic opportunities
B-poor access to medical care
C-high rate of education
D-Lack of access to food
Answer:
The answer is B. Poor access to medical care
Poor access to medical care is most likely to have contributed to the high fertility rate in Africa. Option B is correct.
Fertility rate is the average number of children that a woman will have in her lifetime. In Africa, the fertility rate is high, meaning that women on average have more children than in other parts of the world. There are many factors that contribute to high fertility rates, but one of the most important is poor access to medical care.
When women do not have access to contraception, they are more likely to become pregnant. They are also more likely to die in childbirth if they do not have access to medical care. In many parts of Africa, girls are married off at a young age. This means that they start having children at a young age, which can lead to higher fertility rates.
In some cultures, it is seen as desirable for women to have many children. This can also contribute to high fertility rates. In some parts of Africa, there are few economic opportunities for women. This can make it difficult for women to support themselves and their children, which can lead to higher fertility rates. Option B is correct.
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Please Help No Random Answers.
Jeff has 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Jeff heats both liquids over a flame for five minutes. When he’s finished, he discovers that the temperature of the oil increased more than the temperature of the water. What can Jeff conclude from this experiment?
The temperature of the oil increased more than the temperature of the water because vegetable oil has a lower heat capacity than water.
Heat capacity is the ratio of heat absorbed to temperature change by a material. Typically, it is stated in terms of calories per degree. Oil can hold more heat than water. Compared to water, oil can be heated to high temperatures more quickly with a significantly lower energy input because it has a lower heat capacity than water..Oil transfers heat to food more gradually to a fixed temperature than water does. Oil can be heated to a higher temperature than water when it is in a liquid state.Hence, the correct option is D.
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In each generation, the wings of experimental fruit flies were clipped short for fifty generations. The fifty-first generation was born with normal-length wings. This observation would tend to disprove the idea that evolution is based on
N an experiment, suppose that the wings of fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal-length wings. This observation would tend to disprove the idea that evolution is based on
a. inheritance of natural variations
b. inheritance of acquired characteristics
c. natural selection
d. survival of the fittest
Inheritance of acquired characteristics. Thus, option "B" is correct.
What is inheritance of acquired characteristics?For fifty generations wings of fruit flies were clipped. Hence they acquired this trait in their lifetime and not genetically. If acquired characteristics were capable of passing on to next generation, 50 generations would have been enough to inculcate this clipped wing trait in fruit flies. Despite it, the fifty-first generation did not have clipped wings.
Hence evolution can not occur without genetic variation. A character simply acquired in a lifetime does not create a difference in germ cells and hence is not enough to be passed on to next generation or cause evolution
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What do the polar bears, reindeer, and shrubs that live in a single area make up?
organism
population
community
ecosystem
Answer:
population
Explanation:
The polar bears, reindeer, and shrubs that live in a single area make up a community. The correct option is C, a community.
What is a community?
In ecology, a community refers to a group of different species that coexist and interact within a particular area or habitat.It represents the interconnected network of species that inhabit a particular area.It includes all the living organisms, such as plants, animals, and microorganisms, that inhabit a specific ecosystem.The structure and composition of a community can be influenced by factors such as resource availability, environmental conditions, and species interactions.The polar bears, reindeer, and shrubs are distinct species that share the same geographical area and have the potential to interact with one another. They form a community within that ecosystem. It is important to note that a community does not include abiotic factors, such as soil, water, and climate, which collectively form an ecosystem.
So, the correct option is C.
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How many feedback loops are possible in a food web of 20 species?
please help!
thank you
Estrogen and chlorine move by diffusion, nitrogen move by transport protein whereas glyphosphate moves by active transport.
How give molecules move through cell membrane?Estrogen move across the cell membrane through simple diffusion because it needs no ATP molecule for its movement while on the other hand, glyphosphate use active transport for the movement across cell membrane because they only move when the ATP is available.
Nitrogen moves into the cell membrane of the lung cell through facilitated diffusion by transport proteins while on the other hand, the hydrogen ions moves into the cell membrane of the cell through active transport.
The chlorine ion moves from higher concentration region to lower concentration region by simple diffusion process.
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(a)
Producers
(b)
Plants like cacti store their water in large
(a)mesenchyma tissue
(b)Collenchyma tissues
(c)Parenchyma tissues (d) epidermal tissue
Answer:
What is your question?
A river system is made up of a river and its a. sediments. b. divides. c. runoff. d. tributaries.
Answer:
A river system is made up of a river and its tributaries.
What is a river system?
A river system is a term used to describe the broader networks of streams, lakes, and rivers that are tributaries and distributaries of a larger river. For instance, the Mississippi River system includes the Ohio, Red, and Missouri rivers, all of which drain into the Mississippi River. Due to its interconnectedness, the condition of one river may have an effect on the health of the other rivers in the same river system. A river system can also include other types of terrain, such as the wetlands and flood plains that are affected by a major river and its tributaries and distributaries. The majority of the time, rivers have a primary source, such as snowmelt from a mountain that cascades into a number of streams, which eventually merge to form a river that empties into a much bigger river. This is an illustration of a river network. River systems are ecosystems from an environmental perspective, and if even one component of the system is contaminated or destroyed, it may have a severe impact on things like water quality and the health of plants and animals. For instance, the effects of high pollution levels or prolonged drought near a river's source will be felt throughout the rivers and lands that make up the river system.
An example of this is the Amazon River in Brazil (South America).
Answer:
A river system is made up of a river and its tributaries.
Chlorophyll is found in the thylakoid which are found in chloroplast
Why did Mendel study pea plants?
Answer:
He chose peas because they had been used for similar studies, are easy to grow and can be sown each year.
Explanation:
I just saw the answer on the website :)
(≧▽≦)( ꈍᴗꈍ)
Which of the following changes to Earth is NOT caused by living organisms?
Answer:
is C, since cars and other non-living organisms release sulphur dioxide into the atmosphere
wha are the advantages and disadvantages of good hygiene
Answer:
Explanation:
Advantages:-
Lesser diseases
Helps in keeping skin clean and glowing
Stops spreading infections
Which substance has a high albedo?
Answer:
I don't know what are your options but if you just have to name one substance it's sea ice
5. Draw conclusions: Natural selection is the process by which favorable traits tend to increase in frequency over time. How does this experiment illustrate natural selection
Natural selection is usually defined as the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food of mates, will tend to survive and reproduce in greater number than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations. Charles Darwin and Alfred Wallace developed the theory of evolution by natural selection and jointly presented papers on the subject in 1858. It is based on the finding that some distinctions between people in a group can be passed down across generations. Darwinism, or Darwin's theory, is a theory of evolution created by Charles Darwin stating that all life forms arise, change and develop from a process of natural selection. Natural selection is the process of changes in evolution due to the survival of certain individuals in a species. It is one of the most important parts of the theory of evolution. Darwin's idea provided a straightforward yet persuasive explanation for the diversity of species on Earth. Because various locations have distinct circumstances and survival possibilities, natural selection selects the organisms that are best adapted to that particular environment.
Choose all that apply: which resources are most important in the geopolitical landscape?
Group of answer choices
Oil/Fossil Fuels
Water
Gold
Land
The most important resources for man now in the geopolitical landscape is Oil/Fossil Fuels; option A.
What are resources?Resources refers to the materials or substances which are used by humans for their needs either directly or indirectly.
Examples of resources are gold, petroleum, coal, wood , water, etc.
The most important resources for man now in the geopolitical landscape is Oil/Fossil Fuels since they are required to many energy dependent processes.
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Which piece of technology allowed scientists to look for life on Mars?
The piece of technology that allowed scientists to look for life on Mars is known as the name of the rover.
What is Technology?Technology may be defined as the application of scientific understanding of the real purposes of human life. It also illustrates the concept or methods used in the manipulation of the human environment for their betterment.
A Rover is typically an instrument that is used to collect life-related information about the dust, soil, liquid components, and even atmospheric air of other planets like Mars.
The complete question is as follows:
Which piece of technology allowed scientists to look for life on Mars?
Telescope RoverMicroscope ProbewareTherefore, the correct option for this question is B.
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what is the result of hydrogenation of vegetable oils
Answer:
Explanation:
Since the process of hydrogenation contributes hydrogen atoms to oil, this will reduce the amount of fatty acids and increase the amount of saturated fatty acids in the oil.
What does this symbol indicate on a weather map?
A. A stationary front
B. A cold front
C. A warm front
D. An occluded front
Answer:
C
Explanation:
Is a symbol..............
If one side of the DNA ladder contains the following bases, what would the complementary base pairs be for each?
Answer: The complimentary base pairs would be:
a. TATCTGAATCGG
b. CTGTAAGTGACC
c. CGTTATGAACCG
d. TATCGATGGCAT
e. CAGGGTACGTTC
Explanation:
A combines with T and vice versa.
Similarly G combines with C and vice versa.
Embryonic muscles cells are called?
Answer:
sorry i dont know the answer
Answer:
Sorry i dont't know answer
In "The tragedy of the Commons", the author does not consider? (A) plant and animal domestication (B) that humans are social and depend on one another (C) the destruction of natural resources or (D) human self-interest
In "The tragedy of the Commons", the author doesn't consider: B. that humans are social and depend on one another.
What is the tragedy of the Commons?The tragedy of the Commons can be defined as an economic concept in which people (humans) with access to a shared resource act in their own selfish interest, while retroactively depleting this common resource.
This ultimately implies that, humans weren't considered to be social and dependent on one another by the author who wrote the tragedy of the Commons, they were rather selfish and self-centered.
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HELP ME PLS, I WILL GIVE THANKS AND BRAINLIEST
In cats with the Manx Trait, the M allele causes a short or absent tail, whereas the m allele confers a normal, long tail. Cate of genotype MM die as embryos. If two Manx cats mate, what is the probability that each living kitten has an long tail?
Answer:
2/3
Explanation:
Offspring are :
- MM
- Mm
- Mm
- mm
Now, it mentions living kitten.
Hence, they will be :
- Mm
- Mm
- mm
Out of the 3, 2 will have a long tail.
Hence :
P (long tail) = 2/3
Arrange the level of cell organization from the simplest to the most complex, with 1 being the simplest and 5 being the most complex. 1. 1 organism level 2. 2 system level 3. 3 tissue level 4. 4 organ level 5. 5 cellular level
Answer:
1. Cellular level
2. Tissue level
3. Organ level
4. System level
5. Organism level
Explanation:
What is the molarity of a 17 ml solution used to prepare 65 ml of 2.4 M
solution?
Answer:
goo khao eat some stool hahaha
All of the following are advantages of preserving biodiversity except:
a.
many food sources for humans
b.
a variety of genetic information
c.
extinct organisms come back to life
d.
possible sources for new medicines
Answer:
without the possibility of nutritious food
Answer:
[tex]\huge\boxed{\sf Option \ C}[/tex]
Explanation:
Extinct organisms:Organisms that no longer exist are called extinct organisms.Extinct organisms can never come back to life since the last of their species is dead and not even one of its species is alive.
[tex]\rule[225]{225}{2}[/tex]
Atoms of which three elements could bond together to form an organic compound?
Ooxygen, iron, and carbon
O carbon, hydrogen, and oxygen
O oxygen, hydrogen, and nitrogen
O carbon, iron, and nitrogen
Answer:
carbon, hydrogen, and oxygen (second option listed)
PLS HELP!!!!!..... WILL MARK BRAINLIEST!!!!!
What can you conclude from the graph? Select all that apply.
Higher chick survival leads to smaller clutch sizes.
Higher clutch sizes increase the parents' fitness.
Large clutch size is strongly correlated with lower chick survival.
Large clutch size causes lower chick survival.
Smaller clutch sizes increase the parents' fitness.
According to the diagram, large clutch size is strongly correlated with lower chick survival.
What is fitness?The word fitness makes reference to the ability of an organism to survive and produces offspring in an environment.
Fitness is interrelated to the emergence of adaptation that increases the survival and reproduction rate.
In the graphic, the x-axis is the average clutch size, whereas the Y-axis indicates the survival rate or fitness over the next calendar year (season).
In conclusion, according to the diagram, large clutch size is strongly correlated with lower chick survival.
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