Human chromosomes are made up of dna and proteins called ________, which help organize the dna and give structure to the chromosomes.
Human chromosomes are made up of dna and proteins called histones.
What are histone?Histones are a class of alkaline (basic pH) proteins that connect with DNA in the nucleus and aid in condensing it into chromatin. They are positively charged, which enables them to bind to DNA.
They are located in eukaryotic cells' nuclei. The nucleosome, which is made up of DNA and histones, is a pack known as chromatin, and a chromosome is made up of two chromatin.
Histones primary functions are compact DNA strands and impact chromatin regulation. Chromatin is a combination of DNA and protein which makes up the contents of a cell nucleus.
Therefore, Human chromosomes are made up of dna and proteins called histones.
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When 2 or more atoms bond together, they form ____________.
A. Elements
B. Covalents
C. Ions
D. Molecules
Final answer:
When 2 or more atoms bond together, they form (option D) molecules, which are two or more atoms held together by chemical bonds. These can be atoms of the same element or different elements that come together to form compounds like water or methane.
Explanation:
Molecules are made up of two or more atoms held together by chemical bonds. For instance, when two hydrogen atoms and one oxygen atom share electrons via covalent bonds, it forms a water molecule, H₂O.
Molecules can consist of atoms of the same element, like O₂ or H₂, which are forms of oxygen and hydrogen, respectively. Or, they can consist of atoms from different elements bonding together to form compounds, such as water (H₂O) or methane (CH₄).
Manuel's teacher asked the class to make a wet mount slide of their cheek cells. Manuel made his slide and placed it on the microscope stage. Then he got ready to view his cheek cells by following these procedures. 1. Looking through the eyepiece, Manuel adjusted the diaphragm so field of vision was lit. 2. Manuel looked at the stage from the side and lowered the body tube so the high power objective was almost touching the slide. 3. Looking into the eyepiece, he very slowly turned the coarse adjustment to bring the cells into focus. What suggestion would you make to Manuel to CORRECTLY use the microscope to view his cheek cells? A) close the diaphragm B) start with the low power objective C) do not look at the stage when lowering the body tube D) start with the body tube raised and lower it while looking through the eye piece
Answer:
B
Explanation:
Manuel start with the lower power objective for correctly use the microscope. Thus option B is correct.
What are the different parts of microscope ?Microscopes is the instrument used to visualize very minute objects like cells, and microorganisms and it gives a highly magnified and contrasting image.
It is made up of magnifying lenses, each having its own magnification powers. This will magnify the specimen according to its focal strength and it also depend on types of lenses.
The different structural parts of the microscope i.e. head, base, and arm; Head is known as the body which carry optical parts in the upper part of the microscope.
The base of microscope acts as support and carries microscopic illuminators whereas the part connecting to the base and to the head and the eyepiece tube to the base of the microscope which gives support to the head of the microscope.
Thus option B is correct.
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Which of the following questions can be answered scientifically?
Should we just let the river flow where it wants?
What can be done to stop erosion?
Is erosion control worth the financial costs?
Can planting cover crops reduce erosion?
Answer:
The correct statements are:
What can be done to stop erosion? Can planting cover crops reduce erosion?Science refers to the branch of study or knowledge which includes a detailed study of a structure and behavior of the natural and physical world.
It works on the principles of observations, experiments, and their results.
Thus, What can be done to stop erosion? and Can planting cover crops reduce erosion? can be answered with the help of science.
Answer:
The correct answer will be options-
1. What can be done to stop erosion?
2. Can planting cover crops reduce erosion?
Explanation:
A scientific question is a question which can have the real answers and can be answered by following the scientific method.
A scientific question can be answered by proposing a hypothesis based on which experiments can be performed. The experiments will provide observations based on which the scientific questions can be answered.
In the given question, since the selected options can be answered by following the scientific method therefore these selected questions can be considered scientific questions.
why would a fish that lives in the bathypelagic zone lack a swim bladder,and what adaptations would help it maintain neutral buoyancy?
A fish in the bathypelagic zone may lack a swim bladder due to the high pressure that makes it impractical; instead, they have adaptations like less bone mass, high lipid levels, specialized tissues, and gelatinous tissue to maintain neutral buoyancy.
A fish that lives in the bathypelagic zone might lack a swim bladder because the high pressure at deep sea levels would make it difficult to maintain a gas-filled organ for buoyancy control. Instead, these fish have other adaptations that help maintain neutral buoyancy. This includes adaptations such as minimal bone mass, increased levels of lipids that are less dense than water, and specialized tissues that can absorb gases from the water directly, minimizing the need for a swim bladder. They may also have a more watery, gelatinous tissue that provides buoyancy without the necessity of a gas-filled organ.
While swim bladders are used by many bony fishes to control their buoyancy, allowing them to maintain their position in the water column without expending energy, not all fish possess swim bladders. In the deep sea, conditions such as extreme pressure make swim bladders less functional or too costly in terms of biological energy to maintain. Therefore, fish in these environments have evolved alternative strategies to regulate their buoyancy and adapt to their hypertonic surroundings.
These adaptations not only help the fish conserve energy but also avoid predation and increase their efficiency in capturing prey, which is scarce in such deep zones of the ocean.
Salivary glands are spherical exocrine glands with branched ducts. you would classify them as __________.
Due to the fact that the Salivary glands are spherical exocrine glands composing with branched ducts, they would be most likely classified as major and minor salivary glands because they have a major salivary glands which consists of the following; submandibular, sublingual and parotid glands and the minor is consist of glands that are small mucus-secreting.
What process has to take place for a polypeptide to be broken down into amino acids?
The polypeptides are broken down into amino acids by the process of hydrolysis. Hydrolysis is the process by which most of the polymers break down into monomers.
Polypeptides are the compounds which are made up of amino acids. These are the polymers which are formed by the polymerization of amino acids through peptide bonds.
Amino acids form proteins by undergoing polymerization to form polypeptides which form proteins. These polypeptides can be broken down into simple amino acids by the process of Proteolysis.
Proteolysis is the process of breakdown of proteins into smaller polypeptides or amino acids. The hydrolysis of peptide bonds is an extremely slow process which takes hundreds of years. Proteolysis is a catalyzed reaction by the cellular enzymes called proteases, but this breaking down of polypeptides into amino acids may also occur by the intra-molecular digestion.
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The nurse will expect that which hearing test will be performed before the newborn is discharged home?
I think it is A but I am not sure, PLz check!!!
Answer:
Its A
Explanation:
Criteria and constraints are needed to create successful solutions to design problems. Criteria are specific outcomes for a design, and constraints are limits based on resources and a design's environment. The criteria and constraints listed below are all related to a specific design problem. Based on these criteria and constraints, what conclusion can be drawn about the problem and the solution designed to solve it?
Final answer:
Criteria are the measurable attributes of a design, while constraints are the non-negotiable limits within which the design must operate. A design problem requiring eco-friendly, renewable, user-friendly, and cost-effective transportation without new infrastructure implies the importance of these criteria and constraints in solution selection.
Explanation:
Understanding Criteria and Constraints in Design Problems
The concept of criteria and constraints is pivotal in engineering and design disciplines. Criteria refer to the measurable attributes that a successful design should exhibit. These can be qualities like efficiency, cost, and performance, and they serve as a metric for choosing between potential solutions. Constraints, on the other hand, are the non-negotiable limits within which the design must be developed, such as environmental regulations, available technology, time, and budget.
Applying these concepts to a specific design problem, a constraint such as 'does not require new transportation infrastructure' indicates that the design solution must integrate with existing systems. Criteria like 'low pollution and greenhouse gas emissions', 'high percentage of energy from renewable sources', 'commuter convenience', and 'cost-effectiveness over five years' are standards that various design solutions can be measured against. In evaluating design concepts, solutions must first meet all constraints; they are then compared and ranked based on how well they fulfill the criteria.
By understanding the stated criteria and constraints, we can deduce that the design problem involves creating a transport solution that is eco-friendly, renewable-energy based, user-friendly, and cost-effective, all without the need for new infrastructure.
Final answer:
The design problem requires developing a sustainable and user-centric transportation solution compatible with existing infrastructure, focusing on minimal environmental impact and cost-effectiveness over a five-year period.
Explanation:
Identifying Criteria and Constraints in Design
Crafting a successful solution to a design problem relies heavily on understanding and defining both the criteria and constraints that will influence the design process. Criteria are the measurable attributes or standards that the design should meet and are utilized to evaluate and compare different design options, such as weight, cost, and efficiency. In contrast, constraints are the limitations or conditions that the design must adhere to, which may come from available resources, environmental factors, or regulatory requirements.
Given the constraints and criteria mentioned, we can infer that the design problem at hand involves developing some form of commuter vehicle or transportation system. The constraint provided stipulates that it should not require new transportation infrastructure, implying the solution must integrate with existing systems. Taken together, the criteria focus on environmental impact, energy source, and end-user considerations like convenience, comfort, and cost over a five-year period, suggesting that the solution should be sustainable, efficient, and user-centric.
To select a design concept, it's imperative to evaluate potential designs in line with these defined criteria and constraints, ensuring that each constraint is met and selecting the best possible design based on the established criteria. The design team must balance creativity with a structured evaluation process to determine the most feasible design that will address the problem effectively.
The nurse admits an infant who is nutritionally deprived. the infant is weak and seems somewhat uninterested in food. in developing the infant's plan of care, how often will the nurse most likely plan to feed this infant?
The baby refusing his food is not unusual. Just continue on giving the baby milk formula since it is important in his feeding. The baby can take maximum of 32 ounces a day. Then offer single-ingredient foods with no sugar or salt and wait three to five days between each food. In this way if the baby has a reaction you will know why. After some days, you can give the baby combination of Important nutrients, cereals, vegetables and fruits if he reached 8 months. If babies still reject food, do not force it. Try again in a week. If the problem continues, tell the doctor to make sure that there is no problem.
Describe the structure of the mitochondrion and discuss the importance of this structure in cellular respiration
A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions.
What is cellular respiration?
Glycolysis, the citric acid cycle, and oxidative phosphorylation are the three basic processes that take place during cellular respiration. The citric acid cycle happens in the mitochondrial matrix, oxidative phosphorylation happens on the inner mitochondrial membrane, and glycolysis happens in the cytoplasm.
Glucose, ATP, and NAD+ are the initial reactants and ATP and H2O are the end products of cellular respiration. The enzymes phosphofructokinase-1, pyruvate dehydrogenase, and isocitrate dehydrogenase control the rate of cellular respiration.
Disorders that interfere with cellular respiration often impair one or more of the enzymes necessary for it, such as succinyl-CoA synthase or pyruvate kinase.
Therefore, A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions.
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lipid
protein
amino acid
nucleic acid
carbohydrate
All of these organic molecules are _________ - based molecules.
A) carbon
B) hydrogen
C) oxygen
D) water
Answer:
The correct answer will be option-A.
Explanation:
Organic molecules are the molecules which are composed of the carbon atoms attached with other elements like oxygen and hydrogen.
It is the property of carbon atoms that leads to the formation of a large number of compounds like the ability to form bonds with other carbon also known as "Catenation" and the capability to attach four other atoms due to four free valent called "tetra valency".
Since the biomolecules are made up of long chains of monomers sue to carbon atom therefore, option A is the correct answer.
A suffix that is added to a root or combining form that produces a medical term that describes a symptom or sign of a disease process is:
How do fluorescent markers help determine a nucleotide sequence?
Nick lives in area that has a south-facing slope. The temperature in his area is always high. Which of these abiotic factors is responsible for high temperatures in Nick’s area?
Answer:topography
Explanation:
A geologic term for "matching up" is _____.
A.) subduction
B.)paleomagnetism
C.)configuration
D.)correlation
Why is erythropoietin secreted in larger quantities in patients with anemia or anoxic stress?
A meter is a unit of length. How many meters are there in one kilometer (km)
1
100
1000
1000000
Answer:
1,000 meters
Explanation:
There are 1,000 Meters in one Kilometer
What would happen to the size of the herbivore population if the producer population decreased?
Answer:
If the producer population decreased, the size of the hervibores population will diminish.
Explanation:
Producer population refers to autotrophic organisms (plants for example). These organisms are the nutrition source for primary consumers (like hervibores). So if the nutrition source decreased, the population size of hervibores will decreased too.
Process in which cells develop special structures and functions
During which process is mRNA converted into a sequence of amino acids for protein production?
Answer: translation
Explanation:
This produces a waxy covering that protects the plant from insects, bacteria, and fungi.
The correct answer is dermal tissue.
The protection of the delicate tissues of the plants and monitoring the associations of the plant's surroundings is done by the dermal tissue system. The dermal tissue refers to an epidermis, which is generally a single layer of cells enveloping the younger segments of a plant. It discharges a waxy layer known as the cuticle, which prevents loss of water.
Assume that a dihybrid cross is made in which the two genes are autosomal and independently assorting. each gene has two alleles which show incomplete dominance. how many different phenotypes would be expected in the offspring?
The nurse would instruct a client receiving acebutolol about which adverse effect
Desert rabbitds are adapted to the warm climate because their large ears aid in the removal of haet by
Is a candle responsive or has movement?
Why is the lining of your mouth stratified but the lining of your small intestine is not?
The nurse is working in an internal medicine office. a daughter brings her elderly mother to the doctor’s appointment. upon reviewing the medication list, the daughter states, “which medication is prescribed to prevent a stroke?” the nurse is correct to answer which medication?
The nurse should respond to the daughter’s client the best medicines to be prescribed in preventing stroke such as medicine that has the following content, antiplatelet agents, antihypertensives and anticoagulants as these three help prevent of having an individual to fall into stroke.
Which carbohydrate(s) are structural compounds?
polysaccharides are structural compounds