Biology 1.....................................................................
Answer:
Explanation:
1.C
2.B
3.A
4. Endothermic, this processes require an input of energy to proceed and are signified by a positive change in enthalpy, also because the product is less compared to the reactants.
1. What happens when matter changes state?
a. Its chemical properties change.
b. Its physical properties change.
c. The energy of its particles remains the same. hape
d. two of the above
Answer:
Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.
Answer:
d.
Explanation:
Its chemical and physical properties changes as a result of a change in temperature (increase or decrease in temperature).
Assume that a 100 base pair DNA ladder contains 45 cytosines. How many guanines are there?
Answer:
45 guanines
Explanation:
In a DNA strand, each nitrogen base only pairs with one other specific base.
Adenine pairs with thymine, and cytosine pairs with guanine.
This means that the amount of adenine is always equal to the amount of thymine, and the amount of cytosine is always equal to the amount of guanine.
So, if the DNA ladder has 45 cytosines, there will be 45 guanines.
Jorge is studying a pond ecosystem in his neighborhood. The pond is home to a variety of plant and animal species, as well as a stop for birds that migrate through the region.
One summer, heavy rains wash an unusual amount of fertilizer into the pond. Jorge observes the algae population growing rapidly, and quickly algae cover the pond's surface. Several weeks later, many fish and other animals die in the pond. However, within two years, the algae population has returned to its previous size, as have the populations of all the ecosystem members.
Jorge's observations provide the strongest evidence for which of the following conclusions about the pond?
A. The pond ecosystem has very high biodiversity that protects it from invasive species.
B. The pond ecosystem is resilient to changes in many abiotic and biotic factors.
C. The pond ecosystem can withstand only certain levels of algal growth.
D. The pond ecosystem may change over time, but its species will continue living there indefinitely.
Answer:
I think that the answer is C.
Explanation:
If the levels of algae were too high then it would be the reason as to why the fish died. When the algae went back to normal,the fish were able to live there again.
I hope that helps!
Answer:
C.The pond ecosystem can withstand only certain levels of algal growth.
Explanation:
Your friend says she does not need a flu shot this year because she got one last year. How do you respond?
A. You are incorrect because the flu virus grows and develops fast enough that your resistance to previous strains may not protect you against more recent strains.”
B. You are incorrect because the flu virus mutates fast enough that your resistance to previous strains may not protect you against more recent strains.”
C. “You are correct because viruses do not grow and develop, so there is only one strain of the flu virus.”
D. You are correct because viruses do not mutate, so there is only one strain of the flu virus.
Answer:
B
Explanation:
The answer to this question is B, because even if she got the shot last year, the flu virus grows and mutates fast enough that she may not be resistant to any new strains.
B. You are incorrect because the flu virus mutates fast enough that your resistance to previous strains may not protect you against more recent strains.
Flu ShotInfluenza vaccines, usually known as flu jabs or flu shots, are antiviral vaccines that protect against influenza virus infection. As the influenza virus evolves rapidly, new vaccine versions are generated twice a year.The flu vaccination trains your body to detect an antigen (protein) on the surface of the virus by using a deactivated or weakened version of the virus.B. It' s not correct to say that one does not need a flu shot this year because she got one last year as the flu virus mutates fast enough that the resistance to previous strains may not protect her against more recent strains.For more information:
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How are energy in information used to keep an organisms body organized
Organisms use energy to survive, grow, respond to stimuli, reproduce, and for every type of biological process. The potential energy stored in molecules can be converted to chemical energy, which can ultimately be converted to kinetic energy, enabling an organism to move.
Explanation: I hope this helps! NOT MY WORK!
Energy is required for the cells to carry out their metabolic functions. Moreover, information (genetic information) is also fundamental to synthesize and regulate biomolecules required for the cells to carry out their functions.
All cells need energy to carry out their metabolic functions. i.e., to live, grow, and reproduce. Adenosine triphosphate (ATP) is the energy coin of the cell because this molecule provides releasable energy in the bonds between phosphate groups.For example, the energy released by the hydrolysis of ATP is used to synthesize biomolecules, endocytosis, exocytosis, cell motility, cell contraction, etc.The information stored in the sequence of the Deoxyribonucleic acid (DNA) molecule is used to synthesize structural and enzymatic proteins (as well as other cellular components) which are required to carry out cellular functions.Moreover, the information stored in DNA is also required to regulate the expression of genes involved in protein synthesis.In conclusion, energy and information (genetic information) are both fundamental to carry out cellular functions.
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all chemical elements that are needed by living things are recycled in ecosystems true or false
Answer:
True
Explanation:
the answer is "True" / "T" hope this helps
Elements do not lose and gain energy as they move through ecosystems. Instead, they are continually recycled. Ecosystems recycle every chemical element required by living organisms, including carbon, nitrogen, hydrogen, oxygen, phosphorus, and sulfur. Therefore, it's true.
What is ecosystem?An ecosystem is a region where a bubble of life is created by plants, animals, and other organisms interacting with the weather, environment, and other factors. Abiotic variables, or nonliving components, coexist with biotic components in ecosystems. Plants, animals, and other species are biotic factors.
Elements do not lose and gain energy as they move through ecosystems. Instead, they are continually recycled. Ecosystems recycle every chemical element required by living organisms, including carbon, nitrogen, hydrogen, oxygen, phosphorus, and sulfur.
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What impact did the Industrial Revolution have on the
Peppered Moth?
Answer:
the moths turned black
Explanation:
At first these moths were white in colour but due to the impact of industrial resolution during the 1800 when They burned coal and trees which released gases that darkened the sky they gradually turned black due to adaptation
What Organelles do plants cells have that animal cells do not? Why won't animal cells need these organelles? NO COPY AND PASTE!
Answer:
Chloroplasts
Explanation:
Chloroplasts are only in a plant cell because it allows plants to capture the energy of the sun. Animals do not need them because they don't produce energy. They get their energy by eating plants and or other animals
Identify the following observation as qualitative or quantitative
The solution turned blue in color
Hey there! I'm happy to help!
Quantitative data are data that have to with quantities (numbers).
For example, how many inches tall is the plant, what is the pH level of this fluid, what is the temperature of the meat, etc.
Qualitative data are data that can be described or that have a specific quality (qualitative).
For example, are the flowers yellow or green, is the fluid bubbling, does the meat smell burnt, etc.
We see that a solution turning blue doesn't have to do with numbers, so it is not quantitative. It is qualitative because it has to do with the quality (in this case, color) of the solution and not a numerical statistic.
Have a wonderful day and keep on learning! :D
explain movement in fern
Answer:
One of the most typical ways that plants like ferns move is through a process known as phototropism. Essentially, they move and grow towards light .Plants may also move or grow in response to other stimuli, in addition to light. They can grow or move in response to physical touch, in response to a chemical, or toward warmth
why aren't viruses considered living things?
Answer:
because they are microscopic organism
Is the following sentence true or false? Scientific inquiry is a process with many paths, not a rigid sequence of steps.____________
Answer:
True
Explanation:
Scientific inquiry is a process with many paths, not a rigid sequence of steps. The given statement is true.
The scientific method isn’t as monolithic as it may seem in practice. Sometimes the results of an experiment suggest that a new approach is needed; sometimes, an experiment introduces whole new scientific questions into the picture.
Scientific inquiry goes beyond the development of process competencies such as observation, deduction, classification, forecasting, quantification, inquiry, interpretation, and analysis, all of which must occur simultaneously in order for scientific inquiry to occur.
So, the given statement is true.
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What is the name oldest recorded human (humanoid) fossil found on Earth? Where was it found and how old was it?
Answer:
Lucy
Explanation:
Lucy was found in Hadar, Ethiopia and is estimated to be 3.2 million years old.
What knowledge did Darwin’s theory need in order to be tested, which he didn’t have at the time?
A. Adaptations
B. Age of the Earth
C. Living organisms
D. Fossils
Answer:
B. Age of the Earth
Explanation:
The answer can be found on the slide with the heading "Could Darwin Explain Everything?"
Victorian scientists found it difficult to test Darwin's theory. For Darwin's theory to work, the Earth needed to be millions of years old, but it's age was not known at the time.
Therefore, the answer is B. Age of the Earth.
2. Seema suffered a severe muscle tear while playing. Which food nutrient would help her recover faster
Answer:
Protein.
Hope it helps you.....help please on number 7
Someone help me please lol
Answer:
what do you need help with.
Explanation:
Please help me... The advantages of soaking pineapple slices in a concentrated sugar solution compared to storing fresh pineapple
Answer:
Answer:
Advantage: Bromelain. Adding pineapple
to your meals or desserts may help you
digest your food better....
Disadvantage: Sugar. If you have
diabetes, pineapple may cause a spike in
your blood sugar. ...
Advantage: Vitamins and Minerals. ...
Disadvantage: Skin Irritation.
hope this helps:)
why water essential to complete the life cycle of a mosquitoes?
Explanation:
Water provides a safety net for mosquitoes to move into developmental periods and grow. In the egg stage, the female lays roughly 300 eggs that float atop the water's surface. This is why it is so important to eliminate any standing water around your property.
Vital centers for the control of heart rate, respiration, and blood pressure are located in the ________. Group of answer choices medulla oblongata cerebrum pons midbrain
Answer:
cerebrum
Explanation:
it connects the brain to the spinal cord and control breathing and blood pressure
The vital center that is responsible for the control of the heart rate, respiratory rate, and blood pressure is located in the midbrain. The medulla is a part of the brains stem that is conned by the spinal cord.
Medulla oblongata being located at the base of the brain stem plays an essential role in incasing the messages from the spinal cord to the brain. It is essential for regulating the cardiovascular and respiratory systems.Hence the option A is correct.
Learn more about the Vital centers for the control of heart rate, respiration, and blood pressure.
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URGENTTT!!
how insulin taken by breathing it in enters the blood?
Answer:
well when you breathe in the insulin it travels to your lung and is absorbed by the alveoli where it is dissolved and is transffered to the capillaries
Explanation:
They believe this is accomplished, in part, through chanting and spinning, which Sufis believe allows them to experience God in a trance state.
The water is gathered in lakes or oceans or frozen in snow and ice.
The water is trapped as water vapor in the atmosphere and clouds.
There is constant rain or snow falling on the planet's surface.
Water is frozen underground instead of flowing on the surface.
Answer:
THE ANSWER IS B IT TRAPPED...
The Yellowstone River ecosystem can support 2,300 bald eagles. This is an example of disrupted ecosystem .
Yes.
Explanation:
The Yellowstone river ecosystem is a disrupted ecosystem indeed.
A phylum is always associated with:
O plants
O animals
O plants or animals
O plants and animals
Answer:
plants
Okkk kkkkkkkkkkkk
plants
is the correct answer
4. Which of the following is an important characteristic of a scientific theory?
a, proven by more than one scientist
b. unchanged by new evidence
c. accepted by the public
d. supported by much evidence
Evaluate the extant to which the government has contributed to.social grants
Answer:
Government has contributed its social grants to create awareness for various social issues among the public. It has provided scholarships for students who are in need of governmental aid for higher studies. Social grants of government have also contributed in creating housing facilities.
How much photosynthesizing material does it take to keep up with a single human’s oxygen needs?
A. 1 medium pool worth of bushes
B. ¼ acre of trees
C. 2 house plants
D. 8 bathtubs of algae
Photosynthesizing material take up 2 house plants for a single human’s oxygen needed. The correct option is C
What is photosynthesis?
Photosynthesis can be defined as the process used by plants and other organisms to convert light energy into chemical energy that through cellular respiration can later be released to fuel the organism's activities. During photosynthesis in green plants light energy is captured and used to convert water, carbon dioxide and minerals into oxygen and energy rich organic compounds.
Therefore during photosynthesizing requirements needed include Sunlight, water and oxygen where two processes occur one light dependent and another which is light independent.
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What happens to a population when it's larger than the available resources can accommodate?
1. The organisms not well suited for that environment won't survive.
2. The organisms who need fewer nutrients will support the organisms who need more.
3. The environment will produce more nutrients and resources to support the population.
4. All of the organisms in that population will die.
Answer:
The organisms not well suited for that environment won't survive
Explanation:
Good Luck!
Answer:
The organisms not well suited for that environment won't survive.
Explanation:
its the right answer for HS
Why are there craters on the surface of the moon?(1 point)
Craters formed when acidic water dissolved the surface of the moon.
Craters developed from deep waterspouts in oceans on the moon.
Craters were created when sinkholes formed after rainstorms on the moon.
Craters resulted when meteoroids crashed into the surface of the moon.
Answer:
Craters resulted when meteoroids crashed into the surface of the moon.
Explanation:
Craters resulted when meteoroids crashed into the surface of the moon. The correct option is D.
What are carters?On many solid planets and moons, craters are the most common surface features.
Craters cover both Mercury and the Moon. Numerous circular holes cover this area of the Moon. Each of these craters was formed when an asteroid or comet collided with the Moon's surface.
A crater is a bowl-shaped depression or hollowed-out area caused by a meteorite impact, volcanic activity, or an explosion. Impact craters are craters formed by a meteorite colliding with the Earth.
Scientists can study a planet's history using impact craters even when the records are buried beneath the surface.
Buried material is ejected during impact, while outward pressure pushes the rock at the crater's edge upward, forming a rim.
Thus, the correct option is D.
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