Answer:
Explanation:Energy flow and nutrient circulation are the major functions of the ecosystem.
Energy is lost as heat forever in terms of the usefulness of the system. On the other hand, nutrients of food matter never get used up. They can be recycled again and again indefinitely.
Carbon, hydrogen, oxygen, nitrogen and phosphorus as elements and compounds makeup 97% of the mass of our bodies and are more than 95% of the mass of all living organisms.
In addition to these, about 15 to 25 other elements are needed in some form for the survival and good health of plants and animals.
These elements or mineral nutrients are always in circulation moving from non-living to living and then back to the non-living components of the ecosystem in a more or less circular fashion.
This circular fashion is known as biogeochemical cycling (bio for living; geo for atmosphere).
Among the most important nutrient cycles are the carbon nutrient cycle and the nitrogen nutrient cycle.
There are many other nutrient cycles that are important in ecology, including a large number of trace mineral nutrient cycles.
Select 1 factor that most likely reflects your life as a senior high student
Explanation:
depression
unstable mental health
constant anxiety
overthinking
Answer:
Regular physical activity promotes growth and development and has multiple benefits for physical, mental, and psychosocial health that undoubtedly contribute to learning.
• Specifically, physical activity reduces the risk for heart disease, diabetes mellitus, osteoporosis, high blood pressure, obesity, and metabolic syndrome; improves various other aspects of health and fitness, including aerobic capacity, muscle and bone strength, flexibility, insulin sensitivity, and lipid profiles; and reduces stress, anxiety, and depression.
Sedentary behaviors such as sitting and television viewing contribute to health risks both because of and independently of their impact on physical activity.
• Health-related behaviors and disease risk factors track from childhood to adulthood, indicating that early and ongoing opportunities for physical activity are needed for maximum health benefit.
An individual is heterozygous for a gene at a specific locus. ________ will have the same form of alleles at that locus after S phase.A. Sex chromosomes.B. Homologous chromosomes.C. Non-sister chromatids.D. Sister chromatids.
Answer:
D
Explanation:
Sister chromatids will have the same form of alleles at the locus after S phase.
This is because during the S phae of the cell cycle, sister chromatids are replicated in preparation for cell division. The replication process is quite accurate such that all the alleles present on the initial chromatids are also replicated on the new sister chromatids. Hence, both new and old chromatids will have the same form of alleles at the locus after replication at the S phase. In other words, sister chromatids are exact copy of one another.
The correct option is D.
Suggest ways you could determine if two similar species are mimics in nature
Answer:
i dont speak english sorry
Explanation:
:/
I’m stuck with this Encryption Table, if anyone can please help me solve this I would appreciate it very much.
Answer:
hu7gf6dcxyxycjc c.f. c ycyftc Tx tv hcv12345678910112131415161727 8gh
What are some of the interactions the respiratory
systems has with other body systems?
Answer:
The respiratory system interacts with the circulatory system by replenishing the blood flow from the heart with fresh oxygen, and taking out waste gases like CO2 from the blood.
Explanation:
Any interaction of the respiratory system with another system would be any function where both systems are involved. Hope this helps!
When you and your friends work together to find a solution to a project you are:
o mediating
o competing
o cooperating
o assisting
Answer:
Cooperating
Explanation:
Cooperation is "the process of working together" so if you and your friends are working together, you are cooperating. Hope this helps! :)
Answer:
c
Explanation:
3 Drag each option to the correct location on the image.
Match the expenses to their respective type. 1. rent
2. employee salary
3. sales commission
4. machinery
5. wages
6. materials used for production
FIXED COSTS or VARIABLE COSTS
Explanation:
Fixed> materials for used production, machinery
Variable> Employee salary, wages, rent
The fixed costs are machinery and materials used for production while the variable costs are rent, employee salary, sales commission, and wages.
What are fixed and variable costs of production?A fixed cost of production is one whose value cannot be easily changed. Examples include machinery and equipment, factory space, etc.
A variable cost of production is one whose balue can be easily changed. Examples include salaries, wages, etc.
Therefore, the fixed costs are machinery and materials used for production while the variable costs are rent, employee salary, sales commission, and wages.
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#SPJ2
IF you see something dark or with a pole like figure then run and hide if you hear what it says it already too late
Answer:
stop being spoopy im scurred (._.)
Explanation:
eh still not scarry
~(￣▽￣)~
9. A pattern of stars that has been named is called a constellation. One winter evening, Jason
found the star called Sirius in the constellation called Canis Major.
Canis Major
Sirius
Muliphen.
Murzim
Wezen
Aludra
Adara
If Jason came outside again a few hours later, what would the stars in Canis Major look like?
A. The pattern of stars would appear to be in the same place in the sky.
B. The pattern would change because each star would have moved in a different direction.
C. The pattern of stars would appear to have moved together across the sky.
D. The pattern would be smaller because the stars moved closer together.
Answer
i think its C.
A bird flies at 12.5 meters per second. the wind speed is 4.5 meters per second. what is the speed of the bird when it flies with the wind?
Answer:
17m/s
Explanation:
Given parameters:
Speed of the bird = 12.5m/s
Speed of the wind = 4.5m/s
Unknown:
Speed of the bird when it flies with the wind = ?
Solution:
The speed of the bird when it flies with the wind is the sum of the speed of the bird and the speed of the wind.
Speed of the bird with wind = 12.5m/s + 4.5m/s = 17m/s
What effect with the enzymes have on the time to make 1 MG of product
Answer:
Decreases
Explanation:
Enzymes speed up chemical reactions so the product is made in less time
If Earth was like a hardboiled egg, which part of Earth would the egg white represent?
Mantle, as its depth is less than 2,900 kilometers
Core, as its depth is less than 2,900 kilometers
Mantle, as its depth is up to 6,500 kilometers
Core, as its depth is up to 6,500 kilometers
Answer:
The Mantle, as it's depth is less than 2,900 Kilometers.
Explanation:
Answer:
The Mantle as it's depth is less than 2,900 Kilometers.
Explanation:
ILL GIVE BRAINLIST
Darren used the following soil triangle to identify a sample of soil as sandy loam.
Soil texture triangle. Clay soil is approximately 45 percent or less sand, 50 percent or more clay, and 40 percent or less silt. Silty loam soil is approximately 50 percent or less sand, 30 percent or less clay, and 50 percent or more silt. Sandy clay soil is approximately 45 to 65 percent sand, 35 to 55 percent clay, and 25 percent or less silt. Sandy clay loam soil is approximately 45 to 80 percent sand, 20 to 35 percent clay, and 35 percent or less silt.
Which description of soil likely allowed Darren to make this identification?
Mostly large particles, with a gritty texture, 60% sand, 10% clay, and 30% silt
Mostly large particles, with a smooth texture, 40% sand, 50% clay, and 10% silt
Mostly small particles, with a smooth texture, 10% sand, 50% clay, and 40% silt
Mostly small particles, with a smooth texture, 30% sand, 30% clay, and 40% silt
Answer: I'm not sure but i think it's Mostly small particles, with a smooth texture, 10% sand, 50% clay, and 40% silt
Explanation:
Soil Texture is defined as the proportion of sand, silt, and clay-sized particles, which make up the composition of the soil.
The description that matches Darren's identification is that most small particles, with a smooth texture, are 10% sand, 50% clay, and 40% silt.
The soil texture can be explained as:
1. Clay in soil texture refers to the mineral soil particles that are less than 0.2 millimeters in diameter. Clay soil is 40% or more clay, less than 45% sand, and less than 40% slit.
2. Silt in the soil texture has a high percentage of sand and it feels smooth, having smooth textures. This soil has a high percentage of clay.
3. Sand is the largest mineral particle, which consists of the coarsest particles. The particles feel gritty and have a diameter of about 0.05 to 0.002 mm.
Thus, the correct answer is Option C.
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Which of the following are functions related to the expression of MHC molecules?
a. To display self-peptides to test developing T cells for autoreactivity
b. To display self-peptides to demonstrate cell health
c. To display self-peptides to maintain self-tolerances
d. To display foreign peptides
e. All of the answers are correct.
Answer:
e. All of the answers are correct.
Explanation:
The major histocompatibility complex (MHC) is a locus that contains several polymorphic genes. These genes are known to encode different components of the immune system, especially cell-surface proteins which present antigens to the T cell receptors during adaptive immune responses. The MHC genes are classified into Class I, Class II and Class III:
1- MHC class I genes encode cell surface molecules that present peptides (antigens) to cytotoxic T lymphocytes (i.e., killer T cells)
2- MHC class II genes encode cell surface molecules that present antigens to CD4+ T cells
3- MHC class III genes encode proteins that are not involved in antigen presentation (i.e., components of the complement cascade, cytokines, etc)
Biology: Performance Task 1 (USATESTPREP) What goes in the blanks in each column of the Venn Diagram? Need help ASAP (30 minutes or less)
Answer:
ok hollup ima need to get it up
In facilitated diffusion, do molecules move down their concentration gradient? Explain.
Answer:
Molecules move up the concentration gradient in facilitated diffusion, which requires ATP to be used as molecules naturally move from high to low concentration
Explanation:
: )
Molecules move down their concentration gradient in facilitated diffusion through channels of proteins.
For most molecules, movement through the membrane, with a significant rate, is only possible by the presence of transporter proteins (integral membrane proteins, which recognize substances with a high specificity, accelerating their translocation) or channels of proteins.
Transport proteins allow the facilitated diffusion of molecules, moving them along the free energy gradient (concentration gradient, charge gradient, or both), in the direction of thermodynamic equilibrium.
When a carrier protein binds to a solute, the protein changes shape in such a way that it carries the solute to the other side of the membrane.
Facilitated diffusion is similar to simple diffusion, since the molecules move from a region of higher to a lower concentration of solutes.
For example, by facilitated diffusion, chlorine ions move down their concentration gradient into the cell through chlorine channels.
Therefore, we can conclude that many molecules are assisted by transporter proteins for their diffusion through the plasma membrane, a process known as facilitated diffusion, where the molecules descend through their concentration gradient.
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Chemical reactions convert to . In nonliving systems, the presence of a(n) allows the reaction to proceed very quickly and have a lower . In living systems, this function is carried out by proteins called .
reactants, products
catalyst
activation energy
enzymes
Explanation:Chemical reactions convert reactants to products. In nonliving systems, the presence of a(n) catalyst allows the reaction to proceed very quickly and have a lower activation energy. In living systems, this function is carried out by proteins called enzymes.
what type of bone is the femur?
A. short bone
B. flat bone
C. long bone
D. irregular bone
Answer:
It is a long bone.
Explanation:
This meaning that it is greater in width, while the patella, a sesamoid bone, is small and round.
12. Base your answer to the following question on the diagram below, which represents a chemical
reaction that occurs in the human body, and on your knowledge of biology.
Part of a
starch
molecule
Water
Z
Substances X and Y are examples of which kind of molecule?
A) simple sugar
B) amino acid C) fat
D) hormone
The conversion of the complex molecule to a simpler molecular is said to be digestion. The human body does digestion to get energy and perform other actions.
The bioactive molecule which is required while digesting is called an enzyme which fastens the process.
According to the picture in the diagram, the starch molecule is attached to the active binding site of an enzyme which helps the digestion of starch, as starch is made up of simple sugar.
Hence, the correct answer is A) a simple sugar
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What do you notice about the Moon’s orbit?
Answer:The Moon has a nearly circular orbit (e=0.05) which is tilted about 5° to the plane of the Earth's orbit. Its average distance from the Earth is 384,400 km. ... Therefore, Earth-bound observers can never see the 'far-side' of the Moon. Tidal forces cause many of the moons of our solar system to have this type of orbit.
Explanation:
Covalent bonds can be best described as neutral atoms coming together to share electrons. neutral atoms coming together to create electrons. ionized atoms coming together to trade electrons. ionized atoms coming together to destroy electrons.
Answer:
neutral atoms coming together to share electrons.
Explanation:
Answer:
The answer is neutral atoms coming together to share electrons.
Explanation:
Bc covalent compounds are compound whose atoms form bonds by sharing electrons
Have a great day!!
Which compound(s) is/are not an electron carrier(s) involved in the respiratory chain? A. Iron-sulfur proteins B. Cytochromes C. Coenzyme A D. NADH Ubiquinone
Answer:
fwgwe.
Explanation:
1. Muscles function in ____________ of the head, neck, and limbs, as well as propulsion of the contents through the digestive tract.2. Muscles function in _____ by preventing unwanted movement, as in maintaining posture. 3. Using _____, or valves, muscles control the passage of contents from one body cavity or lumen to another. 4. Since muscle contraction requires energy to do work, movement muscles help maintain our body _____. 5. By absorbing a large share of one's _____, muscles play an important role in blood sugar control.
Answer:
1. Muscles function in movement of the head, neck, and limbs, as well as propulsion of the contents through the digestive tract.
2. Muscles function in stability by preventing unwanted movement, as in maintaining posture.
3. Using sphincters, or valves, muscles control the passage of contents from one body cavity or lumen to another.
4. Since muscle contraction requires energy to do work, movement muscles help maintain our body heat.
5. By absorbing a large share of one's glucose, muscles play an important role in blood sugar control.
Explanation:
Muscles have different functions in the body. They allow our head, neck and limbs to move, and also have an important role in the propulsion of contents through the digestive track.
Muscles are soft tissues that also have a role in stability by maintaining posture and help the passage of contents from different cavities by using sphincters.
Their main source of energy is glucose in the body. By using this energy, muscles help to maintain our bodies temperature and blood sugar control.
What does the cell membrane do for the cell?
O maintain homeostasis
O all of the above
O communication
O protection
Answer:
Protection
Explanation:
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.
Due to the higher concentration of oxygen (O2) in the air than your blood, oxygen goes from the lungs into the red blood cells by ... *
PLEASE HELP I WILL MARK BRAINLY
THANK YOU
Due to the higher concentration of oxygen in the air than your blood, oxygen goes from the lungs into the red blood cells by simple diffusion.
It should be noted that oxygen diffuses from the lungs into the red blood cells. It then binds to hemoglobin. A molecule of hemoglobin can bind with four molecules of oxygen.
Since the red blood cells have cell membranes that are thin, this then enables oxygen to be able to diffuse quickly.
In conclusion, the correct option is simple diffusion.
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What does the term maturity group mean?
O the level of ossification in the bones of the animal
O the median age of the herd the animal was from
Am
O the age and skeletalsification of the animal at slaughter
O the length of time the beef has been stored after slaughter
During photosynthesis, plant cells use sunlight as an energy source. Animal cells do not use photosynthesis. What organelle in plant cells makes it possible for plants to carry out photosynthesis?
the chloroplast makes it possible.
Answer:
Chloroplasts.... I am pretty sure lol
Explanation:
What is a major difference between DNA replication and DNA transcription?
Answer:
RNA molecules produced by transcription are much shorter in length than DNA molecules produced by replication.
Explanation:
In DNA transcription, only a segment of DNA is copied, or "transcribed," to a complementary strand of messenger RNA.
In DNA replication, the entire length of the DNA molecule is copied so that it can be passed to a new cell.
Succession Interactive!
What is the difference between primary succession and
secondary succession?
Primary succession occurs in an area that is disrupted by a
fire or other natural disaster but secondary succession does
not.
Primary succession occurs after secondary succession.
Primary succession involves only plants but secondary
succession involves animals too.
Primary succession occurs in an area with no life and no soil
but secondary succession happens in an area where an
existing community was disrupted.
Answer:
Primary succession occurs in an area with no life and no soil but secondary succession happens in an area where an existing community was disrupted.
Explanation:
Ecological succession, which is the series of changes that occurs in an ecosystem over a period of time, can be divided into two types namely: primary succession and secondary succession.
- Primary succession is a kind of succession in which a bare surface or rock is colonized by certain organisms called PIONEERS. Primary succession occurs in an area with no life and no previous soil.
- On the contrary, secondary succession occurs in an area that has been previously colonized but disturbed as a result of natural occurrences e.g earthquake, wildfire, flooding etc.
According to the principle of appropriate scale, even the smallest activities can have a _____________ impact
a.
small
c.
large
b.
medium
d.
none of the above
Answer:
there ya go
Explanation: