Water, H₂O, is an example of a chemical [blank] because it is
made from both hydrogen and oxygen.
Answer:
compound
Explanation:
since it is BOTH hydrogen and oxygen, it is a compound because a compount is a object made up of 2 or more atoms that have been chemically bonded
PLEASE HELP ME GUYS PLEASE IM BEGGING!!!! I THINK ITS SIMPLE
Answer:
Explanation:
Fertilizer
summarize the lab safety rules we need to follow
Answer: General Laboratory Safety Rules
1. Know locations of laboratory safety showers, eyewashstations, and fire extinguishers.
2. Know emergency exit routes.
3. Avoid skin and eye contact with all chemicals.
4. Minimize all chemical exposures.
5. No horseplay will be tolerated.
6. Assume that all chemicals of unknown toxicity are highly toxic.
Explanation:
The properties of water are an essential part of what makes water unique. What affect does the properties of water have on Earth's surface and its systems?
How does water’s molecular structure affect solubility of substances on Earth? Provide a real-world example.
Explain how all the properties of water are related. Provide an example to describe the interconnectivity of each property. Be sure to include hydrogen bonding, polarity, surface tension, capillary action, cohesion, adhesion, high specific heat, and expansion upon freezing.
The polarity of water is the basis for all other observed properties of water.
What is water?Water is a highly polar covalent molecule. The dipole of water is high such that the molecule is known to have a very high dielectric constant. Given the fact that water is a very much polar molecule, there are several unusual properties of water. All these unusual properties of the water molecule stem from the fact that there a very high degree of intermolecular hydrogen bonding which holds the molecules of water together.
For instance, the polarity of water causes water to have a high surface tension. This explains why an umbrella could be used to hold water and protect the person using it from being drenched by the rain.
The fact that water molecules are agglomerated by the hydrogen bond which stems from high polarity of the molecule, the usual properties of water such as surface tension, capillary action, cohesion, adhesion, high specific heat, and expansion upon freezing are all observed.
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A dihybrid cross displays the possible allele combinations for two different * 1 point
traits. In pea plants, seed can be yellow (dominant) or green (recessive).
They can also have a smooth seed texture (dominant) or wrinkled
(recessive). Using the diagram above, identify the probability (as a
percentage) of offspring with YELLOW SEEDS and WRINKLED TEXTURE.
ametes from heterozygous parent
yR
At
YYRR
YR YYRR
yr
YyRr
gametes from heterozygous parent
YR
YR
Yr
yr
YYRR
YyRr
Dihybrid Cross
YYTT
YYRR yyRR YyRr
Yr YYRr YyRr YYrr
yyRr
qOw/viewform
YYRr YyRr
Yyrr
yyRr
Yyrr
yyrr
P Generation
F₁ Generation
Phenotype:
F₂ Generation
Phenotype:
3:
9:
3:
72°F Sunny
A dihybrid cross represents a mating experiment between two organisms that are identical hybrids for two traits. Hybrid organisms are heterozygous, meaning they have two different alleles at a particular genetic position or locus.
In a dihybrid cross, the parents have different allele pairs for each trait. One parent has a homozygous dominant allele and the other parent has a homozygous recessive allele. All offspring generated after the F1 generation of mating are heterozygous for a particular trait.
A dihybrid cross is a cross between two organisms that are heterozygous for two different traits. Individuals with this type of trait are homozygous for a particular trait. These characteristics are determined by segments of DNA called genes.
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Why do you think it is important that the test subjects were "blinded" and didn't know which shot they received?
In the blinded study of the vaccination of test subjects with either mRNA vaccine or placebo, the test subjects were blinded in order to eliminate bias.
What is a blinded-study?A blinded research study is a type of study in which the patients and / or their doctors do not know which treatment that they have been given.
There are two types of blinded research study:
single-blinded research study- this is a type of study in which only the patients do not know which treatment they are being givendouble-blinded research study- is a type of study in which the patients and their doctors do not know which treatment that is been given.The purpose of blinded studies is to eliminate bias on the part of the patient or their doctors.
Since having a prior knowledge of a particular treatment to be given may influence the patient to think or feel in a particular way, blinded studies help eliminate such bias.
In conclusion, blinded research studies may be single blinded or double blinded are useful in eliminating bias.
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Biology Semester Exa
1. An enzyme that digests carbohydrates is mixed with starch. The enzyme would
a) have no action
b) produce amino acids
c) produce glucose
d) become a cell
Answer:
C
Explanation:
The enzymes will work on the starch and break it down to glucose
a. How many grams of sucrose would you dissolve in
water for a total volume of 500 mL to make a 5% (weight/volume)
solution?
25 grams of sucrose should be dissolve in water for a total volume of 500 mL to make a 5% (weight/volume) solution.
The mass-to-volume ratio of the solution, which is 5% (g/mL), is equal to 0.05. 500 mL times 0.05 equals 25 that is 500 x 0.05 = 25.
What is sucrose?Disaccharide sucrose is a sugar made of the monomers glucose and fructose. It is the primary component of white sugar and is produced naturally in plants.
From either sugarcane or sugar beet, sucrose is extracted and processed for human use. Sugar mills, which are often situated close to sugarcane plantations in tropical areas, crush the cane to produce raw sugar, which is then sent to other factories where it is refined into pure sucrose. In temperate regions where sugar beets are cultivated, sugar beet manufacturers turn the beets directly into refined sugar.
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Classify the following items based on the type of polymer they are made from: raincoats and leather shoes.
Raincoats are made up of synthetic polymers such as nylon and polyester.
Nowadays raincoats are usually made from waterproof, breathable materials like Gore-Tex, Tyvek, and nylon with a DWR coating. These materials and membranes permit the water vapor to pass through it.
Leather shoes are made up of natural polymer.
A tough, flexible, and long-lasting substance called leather is made by chemically treating animal hides. Cow and calf leather are the most prevalent varieties of leather, though it can come from either cows or calves.
Our main focus will be cow leather because it is the most widely utilized kind of leather in the production of footwear and is offered in a wide range of styles, grades, and price ranges.
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Which of the following is evidence that would support the claim that transcription of DNA has been completed?
The evidence that would support the claim that transcription of DNA has been completed is that a temporary copy of DNA has been produced.
What is DNA?This is referred to as deoxyribonucleic acid and is the genetic material present in living organisms and every being has unique one which is why it is used for identification. It undergoes different processes during cell division such as replication etc.
In DNA replication, a temporary copy of DNA is usually produced and is copied into RNA(Ribonucleic acid) before the process of translation occurs in the cells of the organism which shows that transcription of DNA has been completed.
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If the root and stem ratio of the plant reaches a very small number, how can I explain the conditions of the plant and its development in the research?
Root system is essential for absorbing nutrients and water. The higher the biomass, the greater the agricultural output, and the more intense the root-level absorption. Greater root density and root interception for nutrient uptake are correlated with higher root/shoot ratios.
What is root and stem ratio of the plant ?The root-to-shoot ratio measures the proportion of plant tissues that serve as supports (the roots) to those that serve as sources of growth (shoots). For soil nutrients, a plant that has more roots than its neighbours will be able to compete more successfully.
It is determined that how dry matter is distributed inside a plant depends on the internal balance between labile nitrogen and carbon in the root and shoot system.Learn more about Root and stem here:
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lesson 4 chemical reactions and enzymes
When molecules interact and chemical bonds between them are made or broken, chemical reactions take place.
The mere proximity of two chemicals might cause some reactions. For instance, iron will produce iron oxide, sometimes known as rust, when oxygen is present. Other reactions need energy to initiate the reaction. A forest fire that is ignited by lightning is a fantastic example of something that will burn until all the fuel is consumed.Enzymes, biological molecules consisting of proteins that can be thought of as facilitators or catalysts, are frequently used in biology to help chemical reactions. Enzymes speed up the reaction or enable it to happen with less energy, and once the reaction is finished, they become available once more. They can therefore be reused because they are not consumed by the reaction. Enzymes are made to function best at a particular temperature and pH. They are less effective when used outside of this area. Because enzymes are comprised of protein, they can be denatured or destroyed at extremely high temperatures.Learn more about enzymes here:
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is the only pathogen
that can grow without oxygen.
a. E-Coli
b. Salmonellosis
c. Botulism
d. Shigellosis
Answer:
(c) is your correct answer
please mark me as brainlist
Answer:
Botulism is your answer.
Explanation:
The adaptive advantage of a fungus producing and secreting a bacterial inhibitor would be that it protects against microbial competitors
The adaptive advantage of a fungus producing and secreting a bacterial inhibitor would be that it protects against microbial competitors: is an extensive surface area well suited for invasive growth and absorptive nutrition.
Fungus
A fungus is any eukaryotic organism that includes microbes like yeasts and moulds, as well as the more recognisable mushrooms. These organisms are classed as a kingdom distinct from the other eukaryotic kingdoms, which include Plantae, Animalia, Protozoa, and Chromista in one traditional taxonomy.
The presence of chitin in fungi's cell walls distinguishes them from plants, bacteria, and some protists. Fungi, like animals, are heterotrophs; they obtain nourishment by absorbing dissolved molecules, usually by secreting digestive enzymes into their surroundings.
Fungi, like plants, use chemical defence, which involves the creation of poisons that affect the growth, development, or viability of the antagonists.
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what is a reason if everyone in class does the same experiment with the exact materials and get different results
Explanation:
There is one a million chances that one person's experiment's result is correct and maybe the others are wrong.
I need help to find Appropriate pick up lines about vacuoles in biology
Answer:
vacuoles are water storage organelle in plant cells
Explanation:
it stores water for plants
In biology, vacuoles are membrane-bound organelles found in the cells of plants, fungi, protists, and some animal cells. They are essentially storage compartments within the cell that perform various functions depending on the type of cell and organism.
Vacuoles are typically larger in plant cells and often occupy a significant portion of the cell's volume. They can be classified into several types based on their functions:
Central Vacuole: Found in plant cells, the central vacuole is the largest and most prominent vacuole. It is responsible for maintaining turgor pressure, which helps to maintain cell shape and rigidity. It also stores water, ions, nutrients, pigments, and waste products.
Contractile Vacuole: Found in certain freshwater protists, contractile vacuoles are involved in osmoregulation. They collect and expel excess water from the cell to maintain a balanced internal environment.
Storage Vacuole: These vacuoles are involved in storing various substances such as nutrients, pigments, toxins, or waste products. In plants, they can store starch, proteins, and other compounds.
Lytic Vacuole: Found in some single-celled organisms like protists, lytic vacuoles function in intracellular digestion by containing enzymes that break down macromolecules or engulf and digest invading particles or organisms.
Vacuoles are essential for maintaining cellular homeostasis, regulating osmotic pressure, storing essential nutrients and ions, facilitating waste disposal, and providing structural support to plant cells. They also play a role in various developmental processes, such as cell growth and expansion.
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Identify the one sugar from the list based on the naming structure provided for Enzymes and Sugars.
Pectinase
DNA Polymerase
Glucose
Lactase
According to the research, the correct option is lactase. It is a sugar from the list based on the naming structure provided for Enzymes and Sugars.
What is lactase?It is a double sugar composed of glucose and galactose acting as the enzyme that catalyzes the hydrolysis of the disaccharide lactose to glucose and galactose.
In this sense, it is found in the small intestine and since it is a disaccharidase that specifically breaks down lactose, when this enzyme in the intestinal mucosa is deficient or inadequate, lactose reaches the colon where it is fermented, producing lactose intolerance due to this imbalance.
Therefore, we can conclude that according to the research, the correct option is lactase. It is a sugar from the list based on the naming structure provided for Enzymes and Sugars.
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Consider the following chemical reaction:
glucose (C6H12O6) + galactose (C6H12O6) → lactose (C12H22O11)
Which of the following is/are true of this reaction?
1) it is anabolic but not endergonic
2) it is endergonic but not anabolic
3) it is both anabolic and endergonic
4) it is neither anabolic nor endergonic
Answer: C12H22O11 + H2O C6H12O6 + C6H12O6. This is a hydrolysis reaction and is the reverse of a condensation reaction. It releases energy. Monosaccharides are used
Explanation:
In the diagram above, label the following:
The DNA Ladder
The positive end
The negative end
The direction DNA moves (indicate with an arrow)
The smallest/shortest RFLP
The largest/heaviest RFLP
In gel electrophoresis, the DNA ladder is the band pattern used to compare other samples. The negative end is located in the upper part of the gel, while the positive end is in the lower part. The migration direction is from the negative end to the positive one. Smaller fragments migrate further than the largest fragments. Image attached.
What is Gel electrophoresis?Gel electrophoresis is a method based on DNA fragment sizes and used to analyze polymorphism resulting from the DNA sequence variation among individuals.
Through this method, DNA fragments of varying lengths from samples cut with restriction enzymes are separated according to their size and charge.
All the different DNA samples are placed in one of the gel extremes.
A control DNA sample is used as a reference since its fragment sizes are already known. This is the DNA ladder.
An electric current acts on the gel and triggers the migration of the DNA fragments.
Fragment motion occurs from the negative end toward the positive one. This is because DNA fragments are negatively charged, so they are attracted to the positive side of the gel.
The smaller fragments can move further than larger fragments.
Fragments separate and create band patterns. Once the bands are separated, each of them can be compared with the control bands to get to know their approximate sizes.
Since I do not have the original diagram, in the attached files you will find a random image with the labels on it. You can use it to complete your task.
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4. Synthesize How do the different forms of potential energy depend on an object's position or chemical composition?
Answer:
hi
Explanation:
discuss 2 challenges experienced by the organisation.
2 challenges experienced by the organization are Recruiting the proper talent and uncertainty regarding future competencies.
An organization is a formal structure that was developed with the aid of a team of individuals who joined forces to pursue common business objectives and common aims for growth and development.
Every business has difficulties while it runs, and these difficulties have a significant impact on the success and expansion of the organization.
Any organization that lacks direction struggles to function effectively since there are no rules or resources available. To advance, trained and skilled labor is needed, or it may be necessary to have a leader who can efficiently manage things.
An organization is made up of a variety of human resources from different backgrounds and cultures. Due to the fact that team conflicts result from individual differences, they find it challenging to manage teamwork.
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Which explains the differences in the distribution of solar energy on Earth’s surface?
Earth’s gravitational force pulls the sun’s rays away from the equator.
Earth’s gravitational force pulls the sun’s rays away from the equator.
Earth’s solar energy is dependent on air currents.
Earth’s solar energy is dependent on air currents.
Earth’s climate system determines how much energy is absorbed from the sun.
Earth’s climate system determines how much energy is absorbed from the sun.
Earth’s curved shape and tilt on its axis do not allow the sun’s rays to fall evenly on its surface.
Earth’s curved shape and tilt on its axis do not allow the sun’s rays to fall evenly on its surface.
The statement that explains the difference in the distribution of solar energy on Earth’s surface is that the Earth’s curved shape and tilt on its axis do not allow the sun’s rays to fall evenly on its surface. That is option D.
What is solar energy?The solar energy is the energy that is derived from the sun which occurs due to the nuclear fission reaction occuring within the sun.
The earth is known to have a spherical shape and revolves round about its own axis as it moves round about the sun.
The solar energy rays released from the sun won't be able to reach the whole surface of the earth because of its shape but it can reach a portion of the earth at a time.
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A researcher tested the effect of caffeine on sleep. Forty students volunteered to participate in the study and signed up for one of two nights. Students on Tuesday night drank a cup of regular coffee and students on Wednesday night received a cup of de-caff coffee. Students then took a nap and length of time to fall asleep was recorded with the aid of an EEG. Students in the caffeine group on average took 45 minutes to fall asleep where the students in the de-caff group on average took 10 minutes to fall asleep.
What is the problem of the experiment above?
What is the independent variable, dependent variable, and control group in the experiment?
What is the conclusion of the experiment?
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How do cells specialize? Will give brainly. ;30 points
Some say that if you listen to the sound of a cricket chirping, you can determine the temperature. Is this true or is it just an urban (science) legend? Do any other factors affect how fast a cricket will chirp, such as humidity, wind, atmospheric pressure, or nearby crickets?
Answer:
Actually they do...
Explanation:
I don't know that if we listen to that sound that we know what's the weather but I think cricket's feel and some how know the tempreture.
Nutrients are needed for: a) growth b) decomposing
c) fertilizer
What are the two different types of solids? How are their molecules arranged differently?
Based on how the particles are arranged, solids are classified into two types: crystalline solids and amorphous solids.
What is solid?Solid molecules merely pulsate and rotate in place. Ionic or strong covalent bonding holds solids together, and the attractive forces among atoms, ions, or particles in solids are very powerful.
A solid is a collection of atoms or molecules that are held together in such a way that they maintain a defined shape and size under constant conditions.
Solids are categorized into two types namely crystalline and amorphous. Amorphous solids are disordered, whereas crystalline solids are well ordered at the atomic level.
Thus, the two types of solids are crystalline and amorphous.
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what's photosynthesis ?
anyone wànna be friends ?
Answer:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Answer:
photosynthesis is the series of chemical reactions. Where raw materials are carbon dioxide and water and products are oxygen and glucose.
When you eat pasta, cereal, potatoes or other food high in carbohydrates, the level of _____________ in your blood rises.
Question 1 options:
Glucose
Carbon Dioxide
Hydrogen
starch
Answer:
I believe the answer is D, starch.
Explanation:
I know potatoes are high in starch and could be glucose, too, but I'm more confident in starch.
Hope this helps!
When comparing a plant cell to an animal cell, only the plant cell will have (select all that apply!)
1.cell membrane
2.cell wall
3.nucleus
4.chlorophyll
5.ribosomes
Answer:
Cell wall Chlorophyll because only plants go through photosynthesis