Answer:
Explanation:
Sister chromatids
During DNA replication the chromosomes contract and the identical halves are called sister chromatids.
What is DNA replication?A double-stranded DNA molecule is copied to create two identical DNA molecules through the process of DNA replication.
Because every time a cell splits, the two new daughter cells must have the same genetic material, or DNA, as the parent cell, replication is a crucial process.
In prokaryotes, DNA replication takes place in the cytoplasm, whereas it happens in the nucleus in eukaryotes.
Before dividing, cells must copy their DNA. This promotes successful inheritance of genetic features by giving each daughter cell a copy of the genome.
The two identical copies of the DNA that are produced as a result of this replication are known as "sister chromatids," and they are connected to one another by a section of the chromosome known as the centromere.
Thus, the identical halves of chromosome is sister chromatid.
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An Object at Rest video and explain
how it relates to the rock cycle and provide examples
Answer:
Explanation:
XD
Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed
How do cells work together to keep your windpipe clear?
Why does your body need more than one kind of cell?
What are the proteins used in active transport called?
Answer:
Carrier Proteins.
35. Your body uses insulin to?
a help reduce blood sugar.
b. help increase blood sugar.
c. allow cells to take in glucose.
d. reduce homeostasis.
Answer:
C
Explanation:
Insulin is a hormone that helps control your body's blood sugar level and metabolism -- the process that turns the food you eat into energy. Your pancreas makes insulin and releases it into your bloodstream. Insulin helps your body use sugar for the energy it needs, and then store the rest.
Glucagon interacts with the liver to increase blood sugar, while insulin reduces blood sugar by helping the cells use glucose.
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:
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 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.
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 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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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:
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.
what energy source is used during the energy investment phase of glycolysis?
In the Bird Beak Gizmo, how did the bird beak depth change in drought conditions?
O No change
O Beaks got shorter beacuse the birds had to scrape more to find seeds.
Beaks got longer because the only birds that survived had larger beaks that could crack the hard seeds
Answer:
I think it would be #3, Beaks got longer because the only birds that survived had larger beaks that could crack the hard seeds
Explanation:
In years of extreme drought, the small, delicate seeds get eaten up quickly, leaving behind only the largest, toughest seeds.
BIOLOGY HELP!!! NO LINKS PLEASE!!!
1. Robert Hooke first observed cork cells in 1665 Which statement describes the flaw in Robert Hookes initial conclusion about his observations?
A.) Hooke observed dead cells and concluded that cells are empty structures.
B.) Hooke observed box shaped cells and concluded that all cells are the same shape
C.) Hooke observed structures within the cells and concluded that all cells contain the same structures
D.) Hooke observed similarly sized cells and concluded that all cells are the same size
2. What would happen if the cell membrane of a cell was damaged?
A.) Energy production within the cell would stop
B.) The cell could no longer make proteins
C.) The cell could no longer perform photosynthesis
D.) Cytoplasm and other molecules could leak out of the cell
3. What could happen to a cell if it’s ribosomes did not function properly?
A.) The cell could not convert light energy into sugars
B.) The cell could not send or receive chemical signals
C.) The cell could not synthesize proteins
D.) The cell could not store energy
4. Where do most cellular activities occur?
A.) The endoplasmic reticulum
B.) The mitochondria
C.) The nucleus
D.) The cytoplasm
5. Why are muscle cells packed with mitochondria?
A.) Mitochondria provide important structural support to maintain muscle cell shape
B.) Muscle cells use a lot of ATP generated by mitochondria
C.) Muscle cells relax and contract depending on the number of mitochondria present in the cell
D.) Muscle cells require large numbers of proteins produced by mitochondria
PLEASE HELP!!! Again no links please!
Answer:
1)A
2)D
3)C
5)B
I hope this helps:)
Answer:
1.) Hooke observed dead cells and concluded that cells are empty structures.
2.) Cytoplasm and other molecules could leak out of the cell.
3.) The cell could not synthesize proteins.
4.) The cytoplasm
5.) Muscle cells use a lot of ATP generated by mitochondria.
Explanation:
I took the test and all of these are correct! :D Hope this helps people i the future!
Which of these macromolecules are made of fatty acid molecules?
O proteins
O lipids
O carbohydrates
nucleic acids
Question 16
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
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 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.
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.
An undersea volcano erupts, creating a new island in the Gulf of Mexico. Life slowly starts to appear on the island. What would probably be the first species to take hold and survive? Pls, explain your answer.
A. ferns C. lichens
b. finches d. grasses
Answer:
Lichens
Explanation:
Lichens are very mere grasses
They need very less oxygen
They can adopt in any situation just they need drops of water .
So they will start to hold and survive at first
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!
what is the approximate size of the chloroplast genome in base pairs?
Answer:
between 115 and 165 Kb
Explanation:
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 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:
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
What role do the macromolecules starch and simple sugars play in fruit storage and ripening?
The role that is played by macromolecules such as starch and simple sugars in fruit storage and ripening is that the unripe bananas store starch in their chlorophyll.
Macromolecules refer to very large molecules. The four main classes of macromolecules include lipids, proteins, nucleic acid, and carbohydrates.
It should be noted that starch is stored in the chlorophyll content of the peel of the unripe bananas. During ripening, there'll be an increase in the breakdown of the starch that can be found in the fruit and this will ensure there's an increase in the glucose too.
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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 :)
Look at the image.
Answer:
it is the bodies first line of defense
Explanation:
Which one of the following traits is nota characteristic of living things?A.Needs energyB.Responds to environmentC.Comes from nonliving matterD.Reproduces
Answer:
C.
Explanation:
If they came from nonliving things, they would not be able to live in the first place