Answer: The initiation of transcription involves a sigma factor
Explanation:
quizlet
the lipid components of cellular membranes include:
Answer:
phospholipids
Explanation:
Lipids of cell membranes include phospholipids composed of glycerol, fatty acids, phosphate, and a hydrophobic organic derivative such as choline or phosphoinositol.
Hope this helps!
Nanotechnology is the study of using extremely small things across many fields of science. Some scientists have discovered that this technology allows researchers to make targeted changes to the DNA of plants that can help reduce the use of pesticides. What field of science is being used by nanotechnology in this example? A) biology B) chemistry C) engineering D) physics
biology because it was targeted to study the changes in DNA which is a hereditary character
What is the function of bud scales?
Answer:
Bud scales act as protection for newly formed leaves and branch growth. They form at the end of the growing season once the leaves have fallen off the branches. Bud scales form in preparation for both new leaves and the extension of a stem's growth.
Rewrite this sentence to make it true:
Physical changes happen when the molecules and atoms in matter change.
Answer:
Chemical changes happen when the molecules and atoms in matter change
Explanation:
Chemical changes occur when molecules or atoms' bonds are broken or formed
The image shows one muscle cell. Please select the correct term for the stricter labeled b.
1. troponin
2. myoglobin
3. actin
4. Myosin
Answer:
actin
because of many becauses
Which of these macromolecules are made of fatty acid molecules?
O proteins
O lipids
O carbohydrates
nucleic acids
Question 16
what energy source is used during the energy investment phase of glycolysis?
How does peer review of scientific articles and replication of test results contribute to the development of scientific theories?
Answer:Careful evaluation of research results by other scientists ensures that only solid and legitimate research results are published, and helps prevent faulty research or false claims from being viewed as scientific fact.
Explanation: it guards against fault science contaminating the literature on which all scientists rely. a hypothesis must be tested repeatedly and those tests must produce the same results before the scientific community will accept the hypothesis.
Peer review of scientific articles and replication of test results are essential processes that contribute significantly to the development and refinement of scientific theories. They help ensure the accuracy, credibility, and robustness of scientific knowledge. Here's how they contribute to theory development:
1. **Quality Assurance:** Peer review involves subjecting a research paper to critical evaluation by experts in the field before publication. This process helps ensure that the research is of high quality, methodologically sound, and contributes meaningfully to existing knowledge.
2. **Identification of Errors and Flaws:** Peer reviewers scrutinize the methodology, data analysis, and interpretations presented in the paper. If there are errors, inconsistencies, or weaknesses, reviewers can identify and point them out. This process helps prevent flawed or misleading research from being published.
3. **Enhancement of Clarity:** Reviewers provide feedback on the clarity of the paper's writing, organization, and presentation of results. This feedback helps authors improve their communication, making the research more accessible to the broader scientific community.
4. **Strengthening Hypotheses and Arguments:** Reviewers assess the logic and coherence of the research's hypotheses, arguments, and conclusions. Constructive feedback from peers can lead to refining hypotheses, modifying experimental designs, or reevaluating conclusions based on the evidence.
5. **Contribution to Scientific Discourse:** Peer-reviewed articles become part of the scientific literature, where they contribute to ongoing discussions, inspire new research directions, and serve as building blocks for future studies and theories.
**Replication of Test Results:**
1. **Verification of Findings:** Replication involves conducting the same or similar experiments to confirm the validity of previously reported results. If multiple independent researchers can replicate the same results, it enhances the credibility of the findings and supports the robustness of the theory.
2. **Identifying Errors and Biases:** Replication attempts may uncover errors, biases, or confounding factors that were not initially identified. This process helps filter out inaccurate or biased results, ensuring that only reliable findings contribute to the body of knowledge.
3. **Assessment of Generalizability:** Replication studies conducted in different settings or with different populations help assess the generalizability of findings. A theory that holds up across diverse conditions gains stronger support.
4. **Refinement of Hypotheses:** In cases where replication produces inconsistent results, researchers may need to revisit their hypotheses, experimental design, or methodologies. This process encourages critical thinking and refinement of theories to better explain observed phenomena.
5. **Building a Cumulative Body of Knowledge:** Replicated results provide a foundation upon which subsequent researchers can build. As more replications occur, a body of consistent and reliable evidence accumulates, contributing to the establishment of well-supported scientific theories.
In summary, peer review and replication play vital roles in the development of scientific theories. Peer review ensures the quality and accuracy of research before it enters the scientific literature, while replication confirms and strengthens the validity of findings. Both processes foster a dynamic and self-correcting scientific community that continuously refines and advances our understanding of the natural world.
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what can the nucleus enzyme break down?
Answer:
when the nucleus is removed from the cell the cell can no longer function. the nucleus contains the blueprint (DNA) for all the cells operations and without it the organelles cant do their jobs.
Explanation:
Why did we have to establish a baseline of hydrogen peroxide and catalase in part d of the enzyme catalase lab?
Answer:
Here is an essay.
Explanation:
https://www.bartleby.com/essay/The-Effect-of-Enzymes-on-Hydrogen-Peroxide-F346D6AY9EQ
What is the function of enzymes in a living system?
Enzymes speed up metabolic reactions necessary for life. Without them, certain vital processes would not take place and the body would be unable to function.
Difference enzymes work better under different conditions. Where in a human body might it be beneficial to have enzymes work in very acidic environments?
In areas, like the stomach, that have a pH of two would benefit by having enzymes that function well in acidic environments. An example of such an enzyme is pepsin.
There is a large amount of catalase found in a human liver. Does the liver break down more hydrogen peroxide in the summer or winter? Explain your answer.
More hydrogen peroxide will be broken down in the summer…show more content…
Potassium permanganate - used to titrate and determine the amount of decomposed hydrogen peroxide.
Sulfuric acid - was used to stop the reaction with catalase and hydrogen peroxide. It denatured the enzyme (catalase) and halted the reaction so the amount of hydrogen peroxide decomposed could be measured.
Before performing part D of the experiment, why was it necessary to establish a baseline?
The baseline is a control and shows the amount of decomposed hydrogen peroxide in the initial sample.
You may have observed the reaction of naturally occurring catalase in tissue from either liver or potato. Design an experiment to determine if the amount of catalase varies from tissue to tissue (e.g. 200 g of the liver compared to 200 g of potato).
Put the 100 g of potato in 1 petri dish and 100 g of the liver in another petri dish. Then put equal amounts of hydrogen peroxide for an equal period of time in both dishes. Drain the dishes and titrate them with potassium permanganate simultaneously. The numbers can now be compared using the steps in the sample calculation above in the lab report. In order to compare perform a potassium permanganate titration on pure hydrogen peroxide.
Of the thousands of enzymes known, there is a family of enzymes called proteases that catalyze a reaction of breaking down proteins. What do you think would happen if you added a protease to your sample of catalase before proceeding with your experiment?
The catalase would be broken
Which of the following correctly summarizes the blood flow through the circulatory system?
Answer:
A. is correct. Ra - rv - L - la - lv - b
Explanation:
Answer:
Option 1
Explanation:
Which is NOT a homeostatic mechanism?
O fecal regulation
O water regulation
oxygen regulation
thermoregulation
Explanation:
To be precise, homeostasis is a process/phenomenon not a system. Homeostasis is actually the process of maintaining a stable internal environment despite changes in the external environment. There are mechanisms in organisms that regulate pH and this regulation is an example of homeostasis.
Everything including you and me is made up of matter
True or False
Answer:
Technically, yes.
Explanation:
Depends on your point of view.
NOTE: This excludes light, and photonic interaction. That technically doesn't make up anything, because it has no mass.
Matter is anything that has mass and takes up space. Due to E=MC*2, energy and mass are relative, even though a small amount of mass, has a large amount of energy. So let’s backtrack. Matter is anything. Matter is energy. Matter is nothing? What about in an atom. Or in the vacuum of space? In an atom, between the nucleus, and the electron cloud, there is empty space. In the vacuum of space, most people think there is nothing. Just emptiness, until the next star, or the next planet. That is 100% wrong. I guess they are either thinking too hard or not enough. The vacuum of space actually has energy. Just a small amount of it. It takes up space, that check’s off. It has mass (excluding photons), that check’s off. And yes, it has energy. SO, since energy and matter are interchangeable, everything is made of energy, even though not everything is made of matter. Certain types of energy, sound, heat, light, are not made of energy. Does that mean that photons are not made of Matter? Well, sort of. They have no mass, so technically not, but they do have space and exert a force, which is also mysterious. So, I hope this confused you a little bit, with matter being energy, but not energy being matter. Here is something to spark the imagination: Is fire a solid, a liquid, or a gas
i hope this helps :)
How can you tell the algae beads are preforming photosynthesis
Answer:
preforming the experiment yourself
Explanation:
jdifn
Which of the following correctly describes the 3rd stage of the cardiac cycle?
Answer:
c. the ventricles are relaxed and fill with blood is correct
Explanation:
what is the approximate size of the chloroplast genome in base pairs?
Answer:
between 115 and 165 Kb
Explanation:
What are the proteins used in active transport called?
Answer:
Carrier Proteins.
the eukaryotic cell organelle that most resembles a bacterial cell is the
Answer:
mitochondria
Explanation:
Both bacteria and mitochondria have their own cell
Hydrogen pumps move hydrogen ions into which structure?
O A. The thylakoid
O B. The mitochondrion
O C. The cytosol
D. The stroma
Answer:
a
Explanation:
i
if a person wanted to learn more about the genetic material of plant and animal cells, where would they look?
Answer:
The cell organellles are visible in the electron microscope, but it is not possible to study the living cells in electron microscope. For study of genetic materials i.e., DNAs and RNAs is poosible through the help of electron microscope. (ANSWER)
Explanation:
can i have some help on this question as well? thank you so much
Answer:
A= amino acid
B= monosaccharide
C= steroid
D= fatty acid
E= phospholipid
Explanation:
hope that helps:)
what medications test positive for methamphetamemes?
Answer:
Ritalin (methylphenidate) and Adderall are used to treat ADHD, and are well known to cause a false positive for amphetamines and methamphetamines.
An Object at Rest video and explain
how it relates to the rock cycle and provide examples
Answer:
Explanation:
XD
what best describes the italo-byzantine style of the proto-renaissance
Explanation:
Italo-Byzantine is a style term in art history, mostly used for medieval paintings produced in Italy under heavy influence from Byzantine art. It initially covers religious paintings copying or imitating the standard Byzantine icon types, but painted by artists without a training in Byzantine techniques.
Italo-byzantine style of the Proto-Renaissance shows a period that took place or foundation of Italian Renaissance. What best describes are:
Art work or painting has it origin in byzantine art for without byzantine art it would not have existed.It ranges from religious paintings copying or imitation of the standard Byzantine art.The characteristic of the Italo-Byzantine style it has little representation of emotions.limited range of gestures.In Italo-Byzantine, there is a style term in
makes use of medieval paintings created in in Italy through learning or experience gotten from Byzantine art.
Conclusively, Italo-Byzantine is a style thag is influenced greatly by Byzantine art.
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Which of the following statements are NOT true of micronutrients? a) They help regulate body processes.
b) They provide energy.
c) They help in the growth and maintenance of the body.
d) They are required in small amounts
Answer:
C
Explanation:
its easy
b)They provide energy statements are NOT true of micro nutrients
Do micronutrients control bodily functions?
Every single micronutrient is crucial for the health of your body's systems. Getting enough of the various vitamins and minerals is essential for good health and could even aid in the prevention of disease.
This is due to the fact that micronutrients are involved in almost every bodily process.
One of the most important vitamin categories that your body need are micronutrients. They contain minerals and vitamins. The creation of energy, immune system health, blood coagulation, and other processes all depend on vitamins.
In the meanwhile, minerals are crucial for a number of functions, including growth, bone health, fluid balance, and others.
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1. Write true or false for the following statements. Also rewrite the false statements correctly
A) Stomata in the leaves open and close with the help of guard cells
Answer:
TrueExplanation:
Make me as brain liest
How do cells work together to keep your windpipe clear?
Why does your body need more than one kind of cell?
Read the sentence from the section "Interacting
With Light."
There are three different types of cones
in the eye which each detect a
wavelength of light: red, green or blue.
Which word, if it replaced the word "detect" in the
sentence above, would CHANGE the meaning of
the sentence?
A
hide
B
see
С
recognize
D
sense
Answer:
C
Explanation:
it just makes the most sense. A- hide does not relate to the word detect and is rather a antonym.
Also the word recognize means to pick out/find whereas detect is quite similar.
which organelles contain enzymes that break down old cell parts?
Explanation:
A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts.
Look at the image.
Answer:
it is the bodies first line of defense
Explanation: