Answer:
Yes
Explanation:
Before the modern times, energy consumption was vital in order to survive. For example, you need heat (thermal energy) to cook food and also be in a decent state of temperature for your body. If they had be never used energy, the generations wouldn't go on. Energy is our main source of living. Solar energy provides sunlight to plants so they can be grown healthily to provide nutritious fruits and vegetables.
To conclude, yes, people did use energy before the modern times otherwise, they would've not survived.
Before the manufacturing revolution, our energy demands were mediocre. For heat, we relied on the sun. Whenever the sun disappointed us, we scorched wood, hay, and withered dung. Our society's energy use changed forever, even with the low-cost automobile and the expanse of electricity. Energy usage increased rapidly, doubling every decade. The price of energy production was decreasing unwaveringly, and the efficient use of energy was not a concern. Drivers lined up at gasoline stations to purchase gas, and President Jimmy Carter went on television to announce that energy preservation was "the moral equivalent of war." New factory orders had already stopped because of multibillion-dollar price overruns, soaring-high inflation, and a slowdown in electricity demand growth due to the early effects of energy preservation. So I think people used energy before modern times.
Help me with this question plzz!
Labeo = gills
Dolphin= pisces
Tadpole = hibernation
snake= internal fertilization
Eagle = aerial mode of life
Human = mammals
What is the purpose of inserting a target gene into bacteria?
A. To use it as a host to transfer it to human DNA.
B. To make them produce a specific protein or other product that can be used by humans.
c. To test the gene on a small scale before inserting it into an animal.
D. To make the bacteria resistant to injection by virus DNA.
Answer:
B
Explanation:
Bacterial transformation is a process where the plasmid a circular piece of dna is introduced to the bacterium. It is vital for bacterial transformation and selection for vaccine production purposes, protein production, and even insulin production.
Based on the structures, a student claims that the animal cell contains complex structures that are absent in the bacterial cell. Which statement can the student make to support the claim?
(a) Animal cell contains flagella that aids in locomotion that is absent in case of a bacterial cell.
(b) Nuclear material of the bacterial cell is not enclosed in a nuclear envelope as in case of an animal cell. *
(c) Cytoplasmic content of the bacterial cell is not enclosed in a thick cell wall as in case of an animal cell.
(d) Animal cell contains ribosomes spread across the cell whereas in case of bacterial cell they are clumped together.
The answer is b. since bacteria are prokaryotes.
In a pyramid of numbers, what will be the largest trophic level?
A. Primary Consumers
B. Secondary Consumers
C. Decomposers
D. Producers
Which term defines a well tested,scientifically supported statement that describes how something happens
Answer:
The term would be: Theory
Explanation:
A theory is a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained. It is a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts.
Answer:
theory
Explanation:
Describe the effect of increased carbon dioxide concentration on blood pH
Answer:
As it combines with water, it forms carbonic acid, making the blood acidic. So CO2 in the bloodstream lowers the blood pH. When CO2 levels become excessive, a condition known as acidosis occurs. This is defined as the pH of the blood becoming less than 7.35
The increase in the carbon dioxide concentration on blood pH leads to the condition known as Acidosis.
What is the normal blood pH?The level of normal blood pH in humans significantly ranges from 7.35 to 7.45 on a pH scale. It is considered neutral but experimentally it is slightly basic in nature.
As the concentration of carbon dioxide in the blood increases, the carbon dioxide in the presence of water forms carbonic acid which lowers the blood pH from 7.35.
This reduction in blood pH is known as acidosis. This is caused by the overproduction of acid within the body due to excessive concentration of carbon dioxide in the blood's pH. Acidosis leads to feeling fatigued, lethargic, muscle aches, etc.
Therefore, the concentration of carbon dioxide on blood pH negatively harms the health of an individual.
To learn more about Blood's pH, refer to the link:
https://brainly.com/question/18251302
#SPJ2
Describe the roles of the soil organisms in the carbon cycle
Carbon cycle is a biogeochemical cycle by which carbon is exchanged among the different components of the Earth.
Carbon cycle along with the Nitrogen cycle and the Water cycle, comprises a sequence of events that are key to make Earth capable of sustaining life.
It describes the movement of carbon as it is recycled and reused throughout the biosphere, as well as long-term processes of carbon sequestration to and release from carbon sinks.
The terrestrial carbon cycle is dominated by the balance between photosynthesis and respiration.
Carbon is transferred from the atmosphere to soil via ‘carbon-fixing’ autotrophic organisms, mainly photosynthesizing plants and also photo- and chemoautotrophic microbes that synthesize atmospheric carbon dioxide (CO2) into organic material.
Fixed carbon is then returned to the atmosphere by a variety of different pathways that account for the respiration of both autotrophic and heterotrophic organisms.
The reverse route includes decomposition of organic material by ‘organic carbon-consuming’ heterotrophic microorganisms that utilize the carbon of either plant, animal or microbial origin as a substrate for metabolism, retaining some carbon in their biomass and releasing the rest as metabolites or as CO2 back to the atmosphere.
What is the role of soil organisms in the Carbon Cycle?Soil Organisms or Microbes are critical in the process of breaking down and transforming dead organic material into forms that can be reused by other organisms and thus the microbial enzyme systems involved are viewed as key ‘engines’ that drive the Earth's biogeochemical cycles.
Soil microbes essentially transfer carbon between environmental compartments to fulfil their fundamental goal: survival through reproduction.
Thus, microbes utilize different organic and inorganic forms of carbon as carbon and energy sources.
To learn more about the soil organisms here
https://brainly.com/question/14870462
#SPJ2
Describe the cell structure of fungus in detail with a neat labeled diagram.
Answer:
Fungal cells differ from mammalian cells in that they have cell walls that are composed of chitin, glucans, mannans, and glycoproteins. Both mammalian and fungal cells have cell membranes; however, they differ in their lipid composition.
Explanation: Like plants and animals, fungi are eukaryotic multicellular organisms. Unlike these other groups, however, fungi are composed of filaments called hyphae; their cells are long and thread-like and connected end-to-end, as you can see in the picture below.
Suppose a rural community lives at the top of a mountain. They hold a community meeting to discuss the following options to use as their main energy source; Hydro-power, wind energy, or biofuel. List their options from the ideal to the least ideal. Explain your answer.
Please answer ASAP... Ill give brainliest
what will happen if all snakes are killed
If all snakes are killed the prey population will grow and overlap effects would ripple through the ecosystem and cause considerable damage. the prey population that snakes feed on would grow, and the predators that feed on snake will die out.
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).
The brain stem consists of the ________. Group of answer choices midbrain, medulla, and pons cerebrum, pons, midbrain, and medulla midbrain only pons, medulla, cerebellum, and midbrain
Hey there! I'm happy to help!
The cerebellum is in the back of the brain and it helps with balance and reflexes, but it isn't part of the actual brain stem, so that is not the right answer choice.
The cerebrum is the front part of the brain made up of the many different lobes. Its ultimate goal is to help with thought, movement, and language. This is not part of the brain stem.
The brain stem consists of the midbrain, medulla, and pons. The midbrain is the uppermost part with the pons below it and the medulla oblongata below the pons.
The midbrain is important for functions such as eye and body movement. The pons aids with body signaling and the medulla oblongata also aids with reflexes and involuntary actions (as it is close to the cerebellum). The brain stem as a whole helps with respiration, heart rate, and blood pressure.
Have a wonderful day and keep on learning! :D
una celula tiene mucho color verdoso, posee una forma poliédrica y presenta una pared rígida, ¿Que tipo de celula es?
Explanation:
PLEASE express yourself in English
After lab, you start working on your post-lab conclusion assignment, which asks you to
expand upon knowledge you gained during the lab exercise. You didn't fully understand
the significance of the lab exercise, so you call your lab partner and ask them to help you
answer your post-lab conclusion questions.
Answer:
Explanation:
duh
Which of the following
is not a type of fatty acid?
Answer:
which one ?? where are the options????
Phenyl acetic acid is not a type of fatty acid (option D
What is a fatty acid?A fatty acid is a long-chain carboxylic acid. It consists of a hydrocarbon chain with a carboxyl group at one end. Fatty acids are found in animal and plant fats, and they are an important part of the human diet.
Phenyl acetic acid is not a fatty acid because it does not have a long carbon chain. It is a short-chain carboxylic acid with only six carbon atoms. Short-chain carboxylic acids are not considered to be fatty acids.
Learn about fatty acid here https://brainly.com/question/27960389
#SPJ3
Complete question:
Which of the following is not a type of fatty acid?
Stearic acid
Palmitic acid
Propionic acid
Phenyl acetic acid
Questi
Holds instruétions for making proteins
Answer:
El ARN mensajero (ARNm) lleva las instrucciones para producir proteínas. Como el ADN, las proteínas son polímeros: largas cadenas ensambladas a partir de unidades moleculares prefabricadas que, en el caso de las proteínas, son aminoácidos. Una gran máquina molecular * llamada ribosoma traduce el código del ARNm y ensambla las proteínas.
Explanation:
define term photoautotrophs
Answer:
Photoautotroph are organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration.
Answer:
Hᴇʀᴇ ɪs ᴀɴsᴡᴇʀ
Explanation:
Photoautotroph are organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration. - Mɪsʜᴀɴ Mᴀɢᴀʀ
Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘ ʏᴏᴜシ︎
what does an observation use
Answer:
Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity
To which part of the nervous system do the cranial nerves belong?(1 point)
A. spinal nerves
B. the peripheral nervous system
C. the cerebrum
D. the central nervous system
The cranial nerves belongs to the peripheral nervous system. Thus, option B is correct.
What is nervous system?Nervous system is well organised system in our body as it performs a very important function. The main component of nervous system is spinal cord and brain..The cranial nerves belongs to the peripheral nervous system.
The nerves are arranged in the form of branches from the spinal cord and distributed in all the parts of body.The cranial nerves belongs to the peripheral nervous system.
The location where brain and spinal cord are located is known as dorsal body cavity and these two parts of the body play a vital role in communication of all parts of the body.The nerves are arranged in the form of branches from the spinal cord and distributed in all the parts of body.
Therefore,The cranial nerves belongs to the peripheral nervous system. Thus, option B is correct.
Learn more about nervous system here:
https://brainly.com/question/13487019
#SPJ2
I will give brainliest
Calculate the percentage change in mass of the onions that were on the most concentrated solution of sodium chloride
Show your working
Answer:
-5.3
Explanation:
................
Why aren’t organisms on the sea floor crushed by water pressure and how much pressure inside them is pushing out at the ocean?
What is the named the system of measurement use by most countries around world?
Name the part of the blood in which most carbon dioxide is transported.
Answer:
bicarbonate system......
Explanation:
The majority of carbon dioxide is transported as part of the bicarbonate system
In a randomized trial, scientist try to make sure that there is only one difference between the two groups. What do we call all the things that are the SAME Between the two groups?
A. Predictions
B. Controls
C. Constant
D. Variables
Hey there! I'm happy to help!
A. Predictions are guesses you make about the result of a trial. Let's say that you want to test what will happen if you put less eggs into a cookie recipe. You could make a prediction that the cookies will be more crumbly. This is not the term for things that are the same between two groups, so this is incorrect.
B. Controls are a type of variable that isn't influenced in a unique way as part of the experiment. This is to be able to compare the things you change to a thing that hasn't changed. With our cookie example, a control group would just be a cookie recipe with the normal amount of eggs. Then we can compare a normal cookie to one with less eggs. We see that a control is a type of group, and not a specific thing that is similar or different between the groups, so this is incorrect.
D. Variables are things that can change or vary in your experiment. There are independent variables, which are things that you change, such as the number of eggs in the recipe. Then, you have dependent variables such as color, texture, taste, etc. However, these can change depending on the group because the number of eggs could switch, so this is the wrong term and incorrect.
C. Constants are things that you do not change as part of your experiment. You do not change these variables. In our case, the constants will be all of the other ingredients like the amount of flour, milk, water, sugar, etc. If we have a control group and a group with less eggs, these things will remain constant in both of them. So these things are the same between the two groups, so this answer is correct.
We call the things that are the same between the two groups C. constants.
Have a wonderful day and keep on learning! :D
Pls help me answer thank you
Answer:
b is the correct answer
Explanation:
hope it helps u..
I will give brainliest
Why do villi secrete mucus for protection?
The intestinal mucus is an efficient system for protecting the epithelium from bacteria by promoting their clearance and separating them from the epithelial cells, thereby inhabiting inflammation and infection
hope it helps!
Answer:
it protects epithelium from harmful bacteria.thereby inhibiting inflammation and infection.
Enzyme is lock or Key?
Q: Predict the final masses of the following dialysis tubes.
Dialysis tube is semi permeable membrane which is made of cellulose acetate. This tube is used during the dialysis process.
The initial mass and final mass of dialysis tube will differ.
Initial Mass Final Mass Difference is mass
0 M Sucrose 29.13 g 29.93 g 0.8 g
0.2 M Sucrose 28.37 g 29.97 g 1.6 g
0.4 M Sucrose 30.84 g 33.04 g 2.2 g
0.6 M Sucrose 27.56 g 35.36 g 7.8 g
Learn more at https://brainly.com/question/24330624
what is the definition of Concentration Gradient?
Bacillus anthracis is the causative agent of anthrax.
a.True
b. False
