Answer:
16S ribosomal RNA
Explanation:
Carl Woese used the 16S rRNA gene to discover the third major domain of life, the archaea.
Isabelle decides to shave a 1 x 2-inch patch of her hair and the same-sized patch of her dog's hair. She then measures the growth every day for three weeks.
Match the following statements below:
A) What is the effect of species on hair growth?
B) Shave patches of her hair and her dog's hair and then measure the growth of hair in those patches with a ruler every day for 3 weeks.
C) The species
D) The length of hair or the amount of growth
E) Size of shaved patch; length of time hair grows
F) The dog might not let her be measured. Different human hairs grow at different rates; this is not accounted for
G) Add a control group; include more subjects, humans and more dogs at the same breed; increase the length of time the experiment is conducted.
Answers...
1) Dependent variable
2) Problem question
3) Independent variable
4) Things to be done to improve this experiment
5) Extraneous variables
6) Ways to perform the experiment
7) Controlled variables
The matching statements are:
1. Dependent variable: D) The length of hair or the amount of growth
2. Problem question: B) Shave patches of her hair and her dog's hair and then measure the growth of hair in those patches with a ruler every day for 3 weeks.
3. Independent variable: C) The species
4. Things to be done to improve this experiment: G) Add a control group; include more subjects, humans and more dogs of the same breed; increase the length of time the experiment is conducted.
5. Extraneous variables: F) The dog might not let her be measured. Different human hairs grow at different rates; this is not accounted for.
6. Ways to perform the experiment: E) Size of shaved patch; length of time hair grows
7. Controlled variables: A) what is the effect of species on hair growth?
1. The dependent variable is what is being measured or observed in an experiment. In this case, it is the length of hair or the amount of hair growth in both Isabelle and her dog's shaved patches.
2. This is the problem question, which outlines the main focus of the experiment - to determine the impact of species (human vs. dog) on hair growth.
3. The independent variable is the factor being manipulated or changed in an experiment. Here, it is the species - either human or dog - which may influence hair growth.
4. These are ways to improve the experiment. A control group provides a baseline for comparison, increasing subjects ensures more reliable results, and extending the experiment's duration may reveal more accurate trends.
5. These are extraneous variables, which are uncontrolled factors that could affect the experiment's outcome. The dog's behavior and variation in human hair growth rates could introduce uncertainties.
6. This describes the procedure for conducting the experiment, outlining the steps taken to measure hair growth.
7. These are controlled variables. The size of the shaved patch and the length of time hair grows are constants intentionally kept the same to isolate the effect of the independent variable (species) on the dependent variable (hair growth).
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Atoms with positive or negative charges, such as H+, Cl-, and K+, are called ______. Multiple choice question. electrically neutral neutrons ions radioactive
Answer:
ions
Explanation:
hope this helps you :)
Why is hyaline cartilage white and shiny?
Hyaline cartilage will have a white and transparent appearance since it is not irrigated, so it is an avascular structure, also being formed by type II collagen.
What is hyaline cartilage?Hyaline cartilage is a type of connective tissue that is located in different parts of the body, such as joints. It is a tissue that is avascular and without innervation, since it will have an outer layer of blood cells that will pass all the nutrients it will need. This gives it a glossy-like appearance.
Apart from finding it in joints, we will also see it in the larynx, trachea, bronchi, the spinal cord.
Therefore, we can confirm that hyaline cartilage will have a white and transparent appearance since it is not irrigated, so it is an avascular structure, also being formed by type II collagen.
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QUESTION 3
Describe the unique feedback mechanisms of estrogen in the feedback loop of the
ovary and pituitary. Make sure to include FSH and LH in the explanation.
The unique feedback mechanisms of estrogen in the feedback loop of the ovary and pituitary is to enhance the secretion of GnRH and gonadotropins which lead to ovulation.
How does estrogen play a role in a feedback mechanism?The positive feedback effect of estrogen is the mechanism in which the GnRH cells of the brain and the pituitary gonadotrophs produce in the secretion of GnRH and gonadotropins, this will lead to ovulation. Estrogens regulate the secretion of Luteinizing hormone by controlling the secretion of GnRH from the region of hypothalamus as well as the secretion of GnRH that stimulates both tonic Luteinizing hormone secretion and the Luteinizing hormone.
So we can conclude that the unique feedback mechanisms of estrogen in the feedback loop of the ovary and pituitary is to enhance the secretion of GnRH and gonadotropins which lead to ovulation.
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Which of these is an essential quality of a
successful scientific experiment?
A. It is well funded and profitable to the experimenter.
B. It has been referenced in famous scientific journals.
C. It can be replicated by other experimenters and yield the same
results.
Answer: C. It can be replicated by other experimenters and yield the same results.
Explanation:
Being well funded or profitable is not necessary for a successful experiment, and neither is the notoriety of the publisher. For an experiment to be credible, it must be repeatable based on the methodology and yield the same results. Otherwise, the results of the experiment would not be considered accurate.
Put the letter of the correct answer on the blank (6) monosaccharide; found naturally in fruits and honey, must be changed into glucose in the liver before it can be assimilated by the cells of the body
Fructose found naturally in fruits and honey, must be changed into glucose in the liver before it can be assimilated by the cells of the body
What does the liver convert monosaccharides into?From the digestive tract, monosaccharides, glucose, galactose, and fructose are eagerly absorbed by the liver, where they can be used to produce glycogen or to provide the body with the immediate energy it needs.
About 15–25% of the glucose that is consumed by healthy human individuals is processed in the gut and liver, where it is mostly utilised to replenish hepatic glycogen reserves.In the liver, glucose is phosphorylated to become glucose-6-phophate.
What monosaccharide comprises the bulk of fruit?A kind of sugar called a monosaccharide contains fructose. Like other sugars, fructose has four calories per gramme. Fructose is sometimes referred to as "fruit sugar" since it is mostly naturally present in many fruits.
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Which of the following is an example of a chemical change?
Breaking glass
Boiling water
Baking a cake
Holding two magnets together
Answer:
Baking a cake
Explanation:
The reason why is because everything mixes to become one thing. so while everything was mixing and getting baked, it was chemically changing
Why do skin cells have the least number of mitochondria?
Answer: The heart cell has many mitochondria as it is required to contact repeatedly for the whole life of the person without ever stopping whereas the skin cells have fewer mitochondria as cell division requires less energy than muscle contraction and skin cells do not need to divide all the time.
Explanation:
Why is hyaline cartilage white and shiny?
Hyaline cartilage is known to be white and shiny because it is made up of mainly collagen fibre in its matrix.
What is a cartilage?A cartilage is a type of connective tissue found in the body that helps to provide support on bony areas where there is a need for flexibility.
There are three different types of cartilage which includes the following:
Hyaline cartilageFibro cartilage andElastic cartilage.The hyaline cartilage is mostly distributed of all the types of cartilages mentioned above. They contain more collagen fibres than elastic fibres. They are found on the following parts of the body that includes the following:
ribsnose,larynx, trachea, andas precursor of bone.When the hyaline cartilage is viewed under a microscope, it appears shinny and white. This is so because it's matrix is made up of abundance of type II collagen fibres.
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Bio 101
Why are lipids hydrophobic
Answer:
Lipids are a large and diverse class of biological molecules marked by their being hydrophobic, or unable to dissolve in water. The hydrophobic nature of lipids stems from the many nonpolar covalent bonds. Water, on the other hand, has polar covalent bonds and mixes well only with other polar or charged compounds.
Sam is the oldest in his group of friends. Amira is five years younger than Sam, Lea is between Sam and Amira in age, and Marcus is the youngest. Arrange the names of the friends in order from youngest to oldest.
Answer:
Sam is oldest in their group,Lea is younger than sam,Amira is younger than Lea and Marcus is the youngest in their group.
Explanation:
Because,Sam Is the oldest and Marcus is the youngest
difference between Monera and protists in terms of their methods of reproduction
Answer:
move breathing
Explanation:
yes
one of the symptoms oh high salt concentrations in soil is plants that appear dehydrated even when they are receiving adequate water. how can you explain this phenomena using what you observed in the root cells of the salt-sensitive plants?
High salt concentrations in soil is plants that appear dehydrated even when they are receiving adequate water because the salts comes from the irrigation activity.
What does salt do to plants and their roots?The more salt that accumulates in the soil from irrigation and natural occurrence in the soil. We applied water to the plants in order to maintain the water content in the plants and make them hydrated. Sometimes the water has high salt concentration that negatively affected plant growth. Salinity greatly affects production in crops and trees by preventing the nitrogen uptake, reducing the growth and also stop the reproduction process in plant. Chloride salts are the toxic ion to plants. When its concentration increases in the soil, the plant is poisoned and dies in the end.
So we can conclude that High salt concentrations in soil is plants that appear dehydrated even when they are receiving adequate water because the salts comes from the irrigation activity.
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Can someone Help me please!
What are two ways that bacteria affect plants? Pls answer ASAP
Answer:
Bacteria convert nutrients and toxins into forms unavailable to the plant. Some bacteria are involved with the transitions of nutrients and make nutrients such as nitrogen.
Omggg helpp pleaseee
Answer:
I would say A
Explanation:
Social sciences try to remain____blank
fully orderly and useful
Which statement best represents how structure relates to function?
People can develop a tolerance for spicy food over time.
Tortoises in the wild can live for more than 150 years.
A deer's horizontal pupils help it scan the horizon for predators.
Labrador retrievers can be black, yellow, or chocolate colored.
The statement that best represents how structure relates to function is as follows: a deer's horizontal pupils help it scan the horizon for predators (option C).
What is structure in biology?A structure, according to biology, is an arrangement or organization of parts to form an organ, system, or living thing.
The structures found in living organisms are usually function-specific. Examples of common structures in living organisms and their respective functions are as follows:
Radula in snails - feedingEyespot in Euglena- light sensingClaws in carnivores- for holding preyTherefore, the statement that best represents how structure relates to function is as follows: a deer's horizontal pupils (structure) help it scan the horizon for predators (function).
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What chemical found in plant cells is able to use the energy in sunlight to make food?
a. cytoplasm
b. chlorophyll
c. lactic acid
d. sulfuric acid
answer: b. chlorophyll
Answer:
b.chllrophyll
Explanation:
Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. It is like a solar panel that changes sunlight energy into electric energy. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.
How does the structure of the stomach best represent the relationship between structure and function?
The stomach has multiple chambers to improve digestion of food.
The powerful muscles around the stomach help it compress food.
The acid-resistant tissue of the stomach holds acid that breaks down food.
The spongy texture of the stomach helps it absorb food and liquids.
Answer:The stomach serves as a temporary receptacle for storage and mechanical distribution of food before it is passed into the intestine.
Explanation:
The statement that best describes the relationship between the structure and function of the stomach is as follows:
The stomach has multiple chambers to improve the digestion of food.Thus, the correct option for this question is A.
What is the function of the stomach?The function of the stomach is to digest the consumed food into the smaller particles and migrate it to the region of the small intestines. It temporarily stores food for proper digestion and operations.
The stomach of humans is significantly subdivided into four chambers. Each chamber of the stomach is designed for a particular function. But it all directs to a specific function of digestion.
The muscles of the stomach contract continuously in order to enhance the digestion of food. the pyloric sphincter is the type of muscular valve that opens and permits the digested food to migrate into the small intestine.
Therefore, the stomach has multiple chambers to improve the digestion of food is the statement that best represents the relationship between structure and function. Thus, the correct option for this question is A.
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Which plate boundary interaction is shown in the picture?
A. convergent boundary
B. divergent boundary
C. transform boundary
The plate boundary interaction which is shown in the picture is referred to as transform boundary and is denoted as option C.
What is a Transform boundary?
This refers to a fault zone which is characterized by two plates sliding past each other horizontally in the earth .
On the other hand, Divergent boundaries refers to the plates moving apart while convergent boundaries refers to the plates are colliding with each other as a result of different types of factors such as temperature, pressure etc.
This is therefore the reason why transform boundary was chosen as the most appropriate choice according to the picture given in the question.
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__________ is the process by which molecules move from an area of high concentration to an area of low concentration
Answer:
here
Explanation:
yeet UVUUVUVUVUhegduddvsy
Answer:
it is the process of diffusion
an allosteric site of enzyme is
Answer:
Explanation:
is that the question? Adenine and guanine are what represents prunin Thymine
Which of the following statement is NOT true about enzymes
Answer:
Which of the following statement is NOT true about enzymes:
Explanation:
C. Enzyme activity is affected by temperature
Enzymes are not affected by temperature unless very, very high heat is involved and everything else is true.
Which ethical theory or principle is best illustrated in the following case? Explain your answer.
A doctor attending to the care of a young woman recovering from breast cancer discovers the cancer has spread to her lymph nodes and appears terminal. There is a new treatment that has a very slight chance of helping and is very painful and expensive. The doctor tells the young woman about this treatment along with other options to let her make the final decision.
The ethical prinicple that is best illustrated in the example given is the ethical prinicple of autonomy.
What is ethical principles in health sector?Ethical principles are the stated rules that guides the health care provider and the client when faced with dilemmas in the course of rendering health services and receiving treatments.
The ethical principles include the following:
Autonomy: This is the ethical prinicple that allows an independent to make free informed decision about their health.Beneficence (to do good), Nonmaleficence (not to harm), and Justice (fair distribution of benefits and burdens).Learn more about ethical prinicples here:
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There are 300 marbles in a jar, and 42 of
those marbles are blue. What percentage
of the marbles are blue?
Answer:
14%
Explanation
To find a percentage of an object you would need to divide the total amount and the amount of that specific object. 42/300 is 0.14. Then to get the actual percent you multiply by 100.
the percentage of blue marbles is 14
Does saccharomyces have a membrane bound nuclei?
Answer:
Saccharomyces are EUKARYOTES.Every eukaryotic organisms possesses a membrane bond nucleus.Nucleus is surrounded by inner membrane (Non-ER) & outer membrane (ER).Extra Information:
It is a non-motile organism.It reproduces by budding.It can be grow as haploid (n) or diploid (2n).Yes, Saccharomyces has membrane-bound nuclei because they are eukaryote.
Saccharomyces yeast, like other eukaryotic species, has membrane-bound nuclei. Yeast cells have a genuine nucleus inside a double-membrane nuclear envelope. DNA, organised into chromosomes, is in the nucleus.
Eukaryotic cells, unlike bacteria, have membrane-bound nuclei. Eukaryotic cells may safeguard their genetic material and regulate gene expression via a membrane-bound nucleus.
A membrane-bound nucleus allows Saccharomyces yeast cells to perform sophisticated cellular activities including DNA replication, transcription, and translation, which are essential for growth, reproduction, and metabolic functions. Therefore, yes saccharomyces has membrane-bound nuclei because they are eukaryote.
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Match each step of the learning process with the correct part of the scenario.
learn
experience
review
apply
Elle studies her notes at home.
Elle explains photosynthesis without using
her notes.
Elle's teacher explains the process of
photosynthesis.
Elle correctly labels the stages of
photosynthesis on her exam.
The steps of the learning process with the correct part of the scenario are listed below.
What is learning process?The learning process encompasses various components which interact with each other to bring about learning.
These components Include the following:
attention, memory, language, processing and organizing , graphomotor (writing) and higher order thinking.Attention is the learning component of the process where the student actively listens to the teacher to obtain knowledge about a subject.
Processing and organizing is the review part of the process where the student makes necessary efforts to learn more about the subject matter.
Graphomotor (writing) is the ability of the student to apply the knowledge they have in an examination through writing.
Higher order thinking is the ability of the student to explain what they have learnt without assistance.
Therefore, the learning process with the correct order scenario include the following:
Elle's teacher explains the process of photosynthesis. ( learn)Elle studies her notes at home. (review)Elle correctly labels the stages of photosynthesis on her exam.(apply)Elle explains photosynthesis without using her notes. (experience).Learn more about learning process here:
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Please help me I need helppppppp
Answer:
but, atleast tell us what help?
Suppose the index’s fossil in the diagram has an absolute age of 454 million years in your own words,explain how scientists could estimate the ages of the other fossils in the diagram based on this information.
Geologists frequently utilize radiometric dating techniques to analyze the age of fossils, which are based on the natural radioactive decay of specific elements like potassium and carbon.
Radiocarbon: 1–70,000 yearsUranium-Lead: 10,000–billion yearsAbsolute dating and relative dating are the two basic techniques for estimating the age of a fossil. By comparing a fossil with related rocks and fossils from same time period, relative dating is performed to determine the approximate age of the fossil. This is known as relative dating. Absolute dating can be done by measuring the decay of isotopes within the fossil or rocks, to estimate the exact age of a fossil. The radioactive materials present in nearby rocks and fossils are used for absolute dating. These radioactive materials essentially function as a geological clock, revealing a fossil's precise age.Isotopes typically "degrade" with time at a predictable, steady rate. Hence, the age of the specimen can be calculated by comparing the amount of the original parent isotope to the amount of the daughter isotope it decays into.Therefore, relative dating can be used to estimate the ages of other fossils.
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