Answer:
transmission electron microscope
Explanation:
What do you already know about the Moon?
Answer:
the moon is
Explanation:
round
In space
a greyish color
has indentations
dry
low gravity
Wood storks thrive in wetland environments by feeding on small freshwater fish.
Wood storks are absent in the Everglades ecosystem because the environment is
no longer suitable to sustain abundant wading bird life. What term describes a
Wood Stork?
#1-Indicator species
#2-Keystone species
#3-Endemic species
#4-Invasive species
Answer:
Invasive Species
Explanation:
“The environment is no longer suitable to sustain abundant wading bird life”
which activity results from the action of hydrochloric acid on protein in the stomach?
Answer:
Hydrochloric acid contributes to protein digestion by supplying H+ which activates pepsinogen, the precursor to pepsin. Pepsinogen is secreted by chief cells in the gastric glands of the body and antrum of the stomach
I hope this will be helpful
Activation of pepsin results from the action of HCl. Pepsin is important for the digestion of proteins. Thus, partial digestion of proteins happens in stomach.
What are the functions of stomach?Stomach has an important role in the digestion of food. It is regarded as organ for temporary food storage.
Stomach contains various digestive enzymes, gastric juice and hydrochloric acid that prepares the food for complete digestion in the duodenum.
The walls of the stomach secrete hydrochloric acid which is responsible for imparting acidity to food. It is also important for killing of any bacteria present in the food. The acidic pH activates the enzyme pepsin which is required for the digestion of proteins into peptones.
Stomach also contains the gastric juice which kills any microbes present in the food. It is also important for nutrient absorption. Stomach also contains enzyme lipase to favour partial digestion of lipids.
Thus, stomach is important for the partial digestion of proteins and lipids.
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Give an example of how ethical question related to people and their interactions with the environment.
Answer:
Global warming, global climate change, deforestation, pollution, resource degradation, the threat of extinction are few of the issues from which our planet is suffering. Environmental ethics are a key feature of environmental studies that establishes the relationship between humans and the earth.
There are many ethical decisions that human beings make with respect to the environment. For example: Should humans continue to clear cut forests for the sake of human consumption? Why should humans continue to propagate its species, and life itself? Should humans continue to make gasoline-powered vehicles?
There are many ethical decisions that human beings make concerning the environment.
What are ethical changes?Ethical issues is a circumstance in which a moral conflict arises in the workspace.
Ethical issues in the workplace:
Unethical leadership.Toxic workplace culture.Abuse of leadership authority.Environmental ethics are a feature which establishes relationship between humans and the earth. Humans are cutting trees and harming nature for own greed.
Global warming, global climate change, deforestation, pollution, resource degradation are the few issues from which our planet is suffering. Humans should take care of nature and should grow trees. Industries should also make some eco freindly products.
There are many ethical decisions that human beings make concerning the environment.
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Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
At a large desk or on the floor, choose a position to represent the Sun, and place Mercury a few inches from it. Predict the relative distances between each of the other planets, and space them out accordingly. Do you think the average distances between each of the planets stays relatively consistent or varies greatly? What leads you to this conclusion?
Assuming we are to perform this model to scale, with accurate and reliable data, we can conclude that the average distance between each of the planets would increase as we go.
Most science projects which involve creating a model of the solar system place each planet in perfect orbits at equal distances from one another. Accurate scientific data tells us that this is not the case.
The position of the planets in our solar system follow two trends:
Not all planets have perfectly circular orbits, and therefore are not always at the same distance The spacing between planets grows as we get further from the sun.The distance from the sun weakens the effects of the Sun's gravity on the planets, causing them to be further apart as well as causing increasingly erratic orbits. This leads us to the conclusion that the average distance between planets varies greatly.
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Answer:
The distance from the sun weakens the effects of the Sun's gravity on the planets, causing them to be further apart, as well as, causing increasingly erratic orbits. This leads us to the conclusion that the average distance between planets varies greatly.
Explanation:
Edmentum
the part of the endocrine system that is responsible for overseeing
Answer:
Part of the endocrine system that is responsible for overseeing
The pituitary gland is located at the base of the brain beneath the hypothalamus and is no larger than a pea. It is often considered the most important part of the endocrine system because it produces hormones that control many functions of other endocrine glands.
Explanation:
How do the
terms polymer and
monomer apply to the structure of
protein molecules?
in biology what is osmosis and what does it do
Answer:
Osmosis is when the movement of particles in a Highly concentrated substance move to one with lower concentration. What this does is stabilize them.
Explanation:
if blood calcium levels drop below 8.5 mg/dl which hormone is likely to be activated?
Answer:
Parathyroid Hormone (PTH)
Explanation:
The major function of the parathyroid glands is to maintain the body’s calcium level in both the blood and bones.
There is a narrow range of calcium required for the nervous and muscular systems to function properly. (A normal calcium level in the blood stream ranges from 8.5-10.2 mg/dL ).
When blood calcium levels drop below a certain level, receptors in the parathyroid gland release parathyroid hormone (PTH) in proportion to the amount of calcium that is required by the body. This hormone increases blood calcium levels by stimulating osteoclasts to release calcium by breaking down bone. Osteoclasts are cells in the bones that break down and remodel bone tissue.
I have used this site, if you would like to know more please read it whenever your free.
https://www.advancedparathyroid.com/hyperparathyrodisim/what-are-the-parathyroid-glands/
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 animal was the first to be domesticated by early humans?
Answer:
it is dog because the dog is the best friend of the human
Answer:
Goats
Explanation:
Goats and/or sheep were the first animals to be domesticated by early humans.
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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Somebody help me please
a. diaphragm
b. stage clips
c. revolving nosepiece
A scientist hypothesizes that a new medication can reduce the chances of catching a cold. Which of these would most likely be the dependent variable in a study involving this medication?
A - The participants who do not receive the medication
B - The number of participants who catch a cold
C - The age of the participants
Answer:
B - The participants who do not receive the medication
Explanation:
I like to think of the dependent variable as the outcome variable. In this case it would be the number of people that catch a cold because it depends on if they take the medication or not.
Please awnsersgsh in the image
Answer:
48 degrees
Explanation:
what is the difference between sister chromatids and homologous chromosomes?
Answer:
A sister chromatid refers to the identical copies (chromatids) formed by DNA replication of a chromosome, with both copies joined by a common centromere.
Explanation:
Homologous chromosomes may or may not be the same as each other because they are derived from different parents.
Describe the behavior of the chromosomes in then second division of meiosis.
Answer:
The typical behavior of chromosomes in meiosis is that homologous pairs synapse, recombine, and then separate at anaphase I. At anaphase II, sister chromatids separate. However, studies of small chromosomes in maize derived from a variety of sources typically have failure of sister chromatid cohesion at anaphase I. This failure occurs whether there is pairing of two copies of a minichromosome or not. These characteristics have implications for managing the transmission of the first generation artificial chromosomes in plants. Procedures to address these issues of minichromosomes are discussed.
Normal chromosomes enter into meiosis following DNA replication. The homologous pairs find each other in the process of synapsis. Recombination exchanges parts of the homologs involving two of the four chromatids present. Then in anaphase I, each member of the pair segregates to opposite poles and into the two cells resulting from meiosis I. In contrast to mitosis, the sister chromatids of each homolog remain attached to each other. At meiosis II the sisters now separate to opposite poles. The consequence of this sequence of events is that segregation of genetic markers on the two members of the pairs of homologs enter into different gametes that will eventually be formed after meiosis. However, small chromosomes as observed in maize do not follow these rules. In this review, we describe the information known about these minichromosomes and what they inform us about meiotic processes. Also, the behavior of small chromosomes impacts how engineered minichromosomes will behave and so information about them is important for practical applications as well.
how does the phospholipid bilayer form
Answer:
Being cylindrical, phospholipid molecules spontaneously form bilayers in aqueous environments. In this energetically most-favorable arrangement, the hydrophilic heads face the water at each surface of the bilayer, and the hydrophobic tails are shielded from the water in the interior.
Explanation:
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have a fantastic day ahead
compare and contrast classical and operant conditioning
In classical conditioning, the involuntary response is seen, while operant conditioning is based upon the learning experience. An organism will perform more or less based on its experience with operant conditioning.
What are classical conditioning and operant conditioning?In classical conditioning, the stimulus is given and an involuntary response is observed. The Pavlov experiment on dogs is one example. He gave food to the dog and rang the bell at the same time for some days. After that, he only rang the bell, and the dog salivated without the food. Here, salvation is an involuntary response to the stimulus (bell ringing).
In operant conditioning, animals perform actions based on their experience. Example: A mouse is put in a box with an electric supply and food supply. When the mouse accidentally presses the electric switch, it gets an electric shock. This is negative reinforcement, and the mouse is less likely to perform the same function again. When it pushes the food lever, the food comes from the food box. This is positive reinforcement. The mouse is more likely to perform this.
Hence, in classical conditioning, the involuntary response is seen. Operant conditioning is based on learned experience.
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the rate of photosynthesis is much greater in the green than red light spectrum.
Answer:
False.
Explanation: (poor in green light because chlorophyll does not absorb green light).
Good luck on your Quiz/Test!
In mammals the digestive tract is made up of multiple
such as the stomach, pancreas and intestines. These all work together to form the
we use to digest food.
Answer:
The digestive system is made up of the alimentary canal (also called the digestive tract) and other organs, such as the liver and pancreas. The alimentary canal is the long tube of organs — including the esophagus, stomach, and intestines — that runs from the mouth to the anus.
In mammals, the digestive tract is made up of multiple organs such as the stomach, pancreas, and intestines. These all work together to form the alimentary canal we use to digest food.
The digestive system in mammals is a complex network of organs and structures responsible for breaking down food into nutrients that can be absorbed and utilized by the body. The digestive tract, also known as the alimentary canal or gastrointestinal tract, consists of several organs that collaborate to facilitate the digestion and absorption process.
Stomach: The stomach is a muscular organ that receives and churns food, mixing it with gastric juices containing enzymes and acids to begin the process of digestion. It plays a crucial role in breaking down proteins.
Pancreas: The pancreas is both an endocrine and exocrine gland. Its exocrine functions involve producing digestive enzymes that are released into the small intestine to further break down carbohydrates, proteins, and fats.
Mouth: The mouth is where food is chewed and mixed with saliva. Saliva contains enzymes that start to break down carbohydrates.
Esophagus: The esophagus is a muscular tube that carries food from the mouth to the stomach.
Small intestine: The small intestine is the longest part of the digestive tract. It is where most of the nutrients from food are absorbed.
Large intestine: The large intestine is shorter than the small intestine. It absorbs water and salts from food and stores waste products until they are eliminated from the body.
Rectum: The rectum is the last part of the digestive tract. It stores waste products until they are eliminated from the body.
The digestive tract is a vital organ system that is essential for the survival of mammals. It allows mammals to obtain the nutrients they need from food to stay alive and healthy.
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what replaces the electrons excited by sunlight in photosystem?
Answer:
To replace the electron in the reaction center, a molecule of water is split. This splitting releases an electron and results in the formation of oxygen (O2) and hydrogen ions (H+) in the thylakoid space.
Explanation:
the prominence on the inferior side of the sternal end of the clavicle is called the
Costal tuberosity (Impressio ligament costoclavicularis) is a roughened oval elevation on the inferior surface of the bone, near the medial (sternal) end. ... This marking is also called the impression for costoclavicular ligament
Somebody help me please
Answer:
I think it would be A
Explanation:
Sorry if its not
What features are present in both a plant cell and bacterial cell
A. Cell membrane, cell wall , and chloroplasts
B. Chloroplasts ,ribosome, and nucleus
C. Cell wall, cell membrane, and ribosome
D. Cell membrane, ribosome, and nucleus
The features which are present in both a plant cell and bacterial cell are: D. Cell membrane, ribosome, and nucleus.
A cell can be defined as the basic (fundamental) functional and smallest unit of life found in all living organisms.
Cell organelles can be defined as the organs that are typically responsible for the performance of various tasks and functions in the body of a living organism, especially for the survival of the organism.
Some examples of cell organelles found in living organisms are:
Chloroplast. Mitochondria. Nucleus. Cytoplasm. Cell membrane. Chromosome. Golgi apparatus (bodies). Endoplasmic reticulum (ER). Vesicles.Ribosome.In both a plant and bacterial cell, the following features are present:
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help pls answer the question at the bottom
Answer:
no
Explanation:
the lizerd is cold blooded
identify the part of a rib that articulates in the demi-facets of the thoracic vertebra.
Answer:
The capitulum of a rib sits between and articulates with two successive centra, for which most thoracic vertebrae possess costal demifacets. These are anteriorly and posteriorly paired facets, so that a vertebra typically has four demifacets.
Explanation:
Water is a polar molecule because
Answer:
Water is a polar molecule because of its unequal sharing of electrons.
Answer:
The reason why Water is considered a polar molecule is because of Unequal sharing of electrons.
Explanation:
This makes the oxygen end of the molecule slightly negative. Since the electrons are not near the hydrogen end as much, that end is slightly positive. When a covalent bonded molecule has more electrons in one area than another, it is called a polar molecule.
what two main products result from photosynthesis?
spindle fibers attach to kinetochores during _____.
Answer:
Metaphase.
In prometaphase, kinetochores appear at the centromeres and mitotic spindle microtubules attach to kinetochores. In metaphase, chromosomes are lined up and each sister chromatid is attached to a spindle fiber. In anaphase, sister chromatids (now called chromosomes) are pulled toward opposite poles.