Which safety precaution is recommended when a
liquid is being heated in a test tube?

Answers

Answer 1

Answer:

running away

Explanation:


Related Questions

what is an acid? What is a base?

Answers

Answer:

An acid is a substance that donates hydrogen ions. Now there are more hydrogen ions than hydroxide ins in the solution. This kind of solution is acidc. A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions moves the other way.

Explanation:

Answer:

An acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used to determine pH.

Explanation:

An acid is a substance that donates protons or accepts a pair of valence electrons to form a bond.

A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids.

What can be done to preserve the biodiversity of organisms?

Answers

Answer:

Here are several things you can do!↓

Explanation:

Government legislation.

Nature preserves.

Reducing invasive species.

Habitat restoration.

Captive breeding and seed banks.

Research.

Reduce climate change.

Purchase sustainable products.

Which of the following best describes the product of DNA transcription

Answers

I’m pretty sure it’s an RNA molecule

Its an RNA molecule I took the test in the 9th grade  

Write five general properties of minerals

Answers

Answer:

Color, luster, streak, hardness, and cleavage

Explanation:

how does the ph of soil affect plant growth experiment of a succulent plant (plz help)

Answers

the ph of soil affect plant growth experiment of a succulent plant

During meiosis, the chromatids of homologous chromosomes have just undergone crossing over. Which of the following phases will the cell enter next?

A: Metaphase I
B: Anaphase II
C: Prophase II
D: Telophase I

Answers

As I know the process of crossing over occurs in prophase 1 so the next phase will be metaphase 1
Hope this helps!!

Answer:

Metaphase I

Explanation:

Got it right on the test nun to worry about.

PLEASE HELP URGENT
You want to survey members of your class to calculate the average amount of water they drink on a daily basis. Which of the following units would be most appropriate to use in your calculations?
A. microliters
B. micrograms
C. liters
D. kilograms

Answers

Answer:

I would say liters

Explanation:

Because D and B are units of weight and A is extremely small for the amoutn of water you drink.

What is the role of photosynthesis and cellular respiration in the cycling of matter and the flow of energy through the ecosystem

Answers

Answer:Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. ... Plants, algae, and many microorganisms use the energy from light, carbon dioxide from the atmosphere, and water to make sugars (food) through the process of photosynthesis, which also releases oxygen.

Explanation:

hope it helps :)

The role of photosynthesis and cellular respiration in the cycling of matter and the flow of energy through the ecosystem is the following:

The fundamental energy source of all ecosystems is the Sun, which sends a large amount of energy to Earth in the form of light and heat.

The various green plants use energy from the sun, water and nutrients from the soil, and carbon dioxide from the air to produce organic matter.

The process by which light is used as an energy source to transform CO2 into organic compounds essential for life is called photosynthesis.

The manufactured organic matter is used by the photosynthetic organisms themselves for the maintenance of their vital processes through cellular respiration.

Energy, once solar energy is transformed by producers into chemical energy by making organic matter in photosynthesis, is transmitted along with matter.

In each transfer of energy, between the different types of organisms there is a release of energy to the environment, in the form of heat.

On the contrary, matter flows cyclically, chemical elements are transferred between living beings and in the physical environment of each ecosystem.

Therefore, we can conclude that the role of photosynthesis in the cycling of matter and the flow of energy through the ecosystem is to produce the transformation not only of inorganic into organic matter, but also of light energy into chemical binding energy, oxygen is released as a waste product and is used by most organisms for cellular respiration.

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What would most likely happen if the number of shrimp decreased

Answers

Answer:

The population would decrease.

Explanation:

Answer:

the second one

Explanation:

hope this helps sorry if u get it wrong

What is the percentage size difference between the giant dragonfly and the modern dragonfly?

Answers

Answer:

Giant Dragonfly - 2.5 FEET

Modern Dragon Fly - 1-4 Inches.

Explanation:

Size Difference in Percentage: The Giant Dragonfly is 250% - 160% bigger than the Modern Dragonfly.

Explanation:

The Giant Dragonfly is 250% - 160% bigger than the Modern Dragonfly.1

Compare the Viking 1 and 2 probes to the Pathfinder probe that landed on Mars in 1997. How was their technology different?

Answers

Answer:

Explanation:

In 1976, The Viking 1 and Viking 2 probes landed on Mars. For six years they transmitted fascinating panoramic views of the red and rocky soil of Mars back to Earth. Twenty years passed before a third probe landed on Mars. In 1997, the Pathfinder probe landed a miniature vehicle named Sojourner on the planet. The probes operated for three months and sent back large amounts of data on the Martian environment. At the same time, the Mars global surveyor probe was placed in orbit to take an overall portrait of the planet. It supplied hundreds of thousands of bits of information, especially on climatic variations.

Answer:

Viking 1 and Viking 2 probes transmitted panoramic views of the red and rocky soils back to Earth after six years later. The Pathfinder probe sent back large amounts of data of the environment especially about climatic variations in only three months. You can tell the technology was very different between these two because of how long it took for each probe to gather data.  

Suppose we completely stopped burning fossil fuels immediately. How many years would it take to return to atmospheric CO2 levels from the year 1800, about 600 GtC? Use the Gizmo to find the answer.

Answers

Answer:

Explanation:

It would take 50 years to return to atmospheric CO2 levels from the year 1800. I know this because I set the fossil fuel usage to 0 and proceeded to simulate 50 years and that’s when the atmospheric CO2 levels returned to 600 GtC.

As per observation It could take 50 years to go back to atmospheric CO2 degrees from the yr 1800.

Each year, there has been no extrade in the quantity of CO2 withinside the ecosystem because of soil and land plants. coal also can be the answer.

What is co2 quantity ?

Since 2000, the worldwide atmospheric carbon dioxide quantity has grown with the aid of using 43.5ppm, an growth of 12 percent. The contemporary-day document of atmospheric carbon dioxide degrees commenced with observations recorded at Mauna Loa Observatory in Hawaii.

Thus it is well explained.

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Read the following paragraph and fill in the gaps with words from the text box below. Each word may
be used once, more than once, or not at all.

Seeds can be spread by......... seed pods, wind, water or ............ The
dormant ........inside a seedcan survive extreme........... and lack
of ..........They can travel long distances before they.......

embryo/exploding/animals/germinat/ water/temperatures​

Answers

Answer:

exploding, animals, temperatures, water, germinate

Explanation:

Seeds can be spread by exploding seed pods, wind, water or animals. The dormant embryo inside a seed can survive extreme temperatures and lack of water. They can travel long distances before they germinate.

What Best describes a difference between Prokaryotic cells and eukaryotic cells?

Answers

Answer:

Eukaryotic cells contain organelles that are enclosed in membranes. ... Prokaryotic cells contain a nucleus that is enclosed in a membrane

1. A Prokaryotic cell is surrounded by a single membrane layer but In the case of Eukaryotic, there are two surroundings 1. Plasma membrane 2. Nuclear membrane.

2. In the case of prokaryotic cells, the cell wall is made up of Carbohydrates, lipids, protein and certain amino acids whereas The eukaryotic cell wall is made up of chitin and cellulose.

3. Respiratory enzymes are present on the cell membrane in prokaryotic cells whereas Respiratory enzymes are absent on the cell membrane in Eukaryotic cells

4. Thylakoids present in the cytoplasm in prokaryotic cells whereas Thylakoids occur within the chloroplast in eukaryotic cells

5. SAP Vacuoles are present in prokaryotic cells but SAP vacuoles are commonly present in Eukaryotic cells

6. 70s ribosome are present free in the cytoplasm or attached to mRNA in prokaryotic cells whereas 80s ribosomes are present either free or bound to the endoplasmic reticulum and nuclear Envelope for mRNA

7. Endocytosis and exocytosis do not occur in prokaryotic cells but Endocytosis and exocytosis takes place in many protists and in animals

8. The nucleus is absent in prokaryotic cells. nuclear material lies in the cytoplasm and is called a nucleoid, contains a single chromosome whereas Well developed nucleus found in Eukaryotic cells which surrounds why nuclear membrane nucleus contains two or more chromosomes

9. Fertilization, gamete formation and meiosis do not occur in prokaryotic cells whereas Fertilization, gamete formation and meiosis are well developed in Eukaryotic cells.

10. Prokaryotic cells are haploid whereas Eukaryotic cells are of both types, diploid and haploid

11. Nuclear envelope or nuclear membrane is absent in prokaryotic cells Well developed nuclear membrane or nuclear envelope surrounds the nuclear material

12. The nucleolus is absent in prokaryotic cells whereas One or more nucleolus is present within the nucleus

13. Circular DNA is present without associated proteins Nuclear DNA is associated with proteins in prokaryotic cells but It is linear while extranuclear DNA is present without proteins in Eukaryotic cells

14. If present Flagella are simple, consist of a single fibril. Flagella are formed of a protein called flagellin. but Flagella are complex in structure, 9+2 pattern of microtubules formed of the protein called tubulin in Eukaryotic cells if present.

15. Plasmids and pili are present in many prokaryotic cells whereas Plasmids and pili are absent in eukaryotic cells.

16. Most prokaryotes are reproduced by means of asexual reproduction Most but Eukaryotes are reproduced by means of asexual reproduction.

This is not my answer but I hope it helps

HEP PLEASE btw the answer is not D I am not sure what’s the answe

Answers

Answer:

I believe the answer is A

Explanation:

When stomata are closed during hot weather, Oxygen combines with RuBP and a wasteful process occurs, known as:

a. photo phosphorylation
b. photo transpiration
c. photochemical
d. photorespiration

Answers

Answer:

Photorespiration

Explanation:

What are the five categories of adaptations?

Answers

Migration, hibernation, dormancy, camouflage, estivation ( aestivation)

The five categories of adaptations are migration, hibernation, dormancy, camouflage, astivation.

What is migration?

The term migration has been defined as when the birds, animals, or human beings leaves the native place and move towards a new place due to weather or other physical condition is known as migration. Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.

The stage of dormancy is the stage when seed gets closed and not able to germinate as it closes its outer wall. The term hibernation is defined as the particular time period in which the organism hybernate himself for a period of time when the weather or the outer environment is not safe, or fit for his survival.Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.

Therefore, The five categories of adaptations are migration, hibernation, dormancy, camouflage, astivation.

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Which of the following is the most obvious type of problem that could be caused by inadequate sewage treatment?



1.Acid Rain
2.Noise pollution
3.Radioactivity
4.Water pollution

Answers

Answer:water pollution

Explanation:

Describe an approach for understanding global systems and the chages they undergo.

Answers

Answer:

I definitely agree with the person above seems like a legit well thought out awnser

The reaction has one reactant and at least and at least two products

Answers

decomposition reaction, one reactant breaks down into two or more products

Which of the following living things would have the same processes at the cellular level as it would at the organismal level? An amoeba A human A flea An oak tree A mushroom​

Answers

the answer would be an amoeba

Cell size and shape are important factors in determining the rate of diffusion. Think about cells with specialized functions, such as epithelial cells that line the small intestine or plant root hairs. What is the function of these cells? Sketch the shape of these cells. How does the shape of these cells relate to their function?

Answers

Answer:

Epithelial cells are the protective cells. They form the outer covering of the body surface which protects the body from any external danger.Cuboidal epithelial cells, as their name suggests, are shaped like cubes. These are typically found in tissues that secrete or absorb substances, such as in the kidneys and glands. Columnar epithelial cells are long and thin, like columns. These are usually found in places that secrete mucus such as the stomach.

Which statement best describe the way thay an adesine phiphosphate molecule become an adenosi trphosphate molecule in the human body?

A. Protein cause phosphate molecule to bind to sugar and form ATP.
B. Food energy is used to attach a phosphate molecule to an ADP molecule.
C. Lonized Oxygen in cells causes sugars and phosphate molecule to form ATP.
D. Water breaks down ADP molecules which form into ATP molecules over time.​

Answers

Answer:

B. Food energy is used to attach a phosphate molecule to an ADP molecule

Explanation:

Hope this helps!

Somebody help me plsss

Answers

Answer:

1. give up 1

2. give up 2

3. give up 3

4. gain 3

5. gain 2

6. gain 1

Mark me as brainliest if you found it helpful

Glucose is broken down in the cytoplasm of the cell. What is
this process called?

Answers

Answer:

glycolysis hope this helps <3

Explanation:

In stage one, glucose is broken down in the cytoplasm of the cell in a process called glycolysis. In stage two, the pyruvate molecules are transported into the mitochondria

Answer:

glycolysis

Explanation:

PLZ PLZ HELLPP MEEE will mark brainliest




Which of the following does not occur in an aquatic ecosystem as a result of nutrient loading?
a. acidification of the water
b. algae growth as a result of eutrophication
c. degraded quality of water for human and livestock consumption
d. improved water habitats for human recreation

Answers

Answer:

Answer D

Explanation:

improved water habitats for human recreation

D. Hope this helps :)

ASAP Describe the difference between each of these terms and the structure of each kind of fat- Saturated fats, Unsaturated fats, Polyunsaturated fats

Answers

Answer:

In saturated fats, the carbon atoms are totally covered, or "saturated," with hydrogen atoms. This makes them solid at room temperature. In unsaturated fats, fewer hydrogen atoms are bound to carbon atoms. These fats are liquid at room temperature.

Please help. I’m kinda dumb

Answers

Answer:

why do you say that?

Explanation:

I can't see what it says even when i pull the piscture up.

Sorry :|

Have a great day/night and stay safe! :D :)

I'm not quite sure either, but from the instructions it appears that you should have some sort of "subject" and two of the subject's relatives. Then you just have to list if the subject and the two relatives show the traits. I believe that the subject is either you, since the course says "Your Genetic Traits"

I hope this helped a bit.

what blood types are not. possible for a child if one parent has type.A blood and the other type B?


A.Type B
B.Type A
C.Type O
d. all blood types are possible

Answers

the answer is going to be D :))

Select an ecosystem that is familiar to you and describe the biotic and abiotic factors that exist there?

Answers

Answer:

Forest Ecosystem

An ecosystem is composed of two main components: biotic and abiotic factors. Biotic factors are the living parts of the ecosystem, such as plants, animals, insects, fungi, and bacteria. Abiotic factors are the non-living parts of the ecosystem, which influence the size and composition of the living parts: these are components like minerals, light, heat, rocks, and water.

Biotic Factors by Type

The most obvious features of any forest ecosystem are its trees, the dominant biotic feature. They dominate the ecosystem: both in terms of visibility and in terms of biomass. However, they are only one type of organism living in a forest. Other biotic factors include:

shrubs , flowering plants , ferns , mosses , lichens , fungi , mammals , birds , reptiles , insects , worms , microbes

Abiotic Factors by Type

The most important abiotic feature of a forest ecosystem may not be obvious, despite its ubiquity and importance: sunlight. Tangible abiotic factors include soil, minerals, rocks, and water. But abiotic factors can be intangible, such as temperature, other types of radiation, and the chemistry of soil and water.

Biotic Factors by Function

Ecologists frequently group an ecosystem's factors by what role they play in the system, rather than by what particular species they are. This is known as a functional classification.

These functions relate to the movement of energy through an ecosystem, and trees — along with other photosynthetic plants — are the chief primary producers. This means that trees convert the sun's energy into food energy, which is then used by other members of the ecosystem.

These other members of the ecosystem can also be categorized. Primary consumers are, for example, herbivores that eat the primary producers. Secondary consumers are the carnivores and omnivores that eat the primary producers. Decomposers are the scavengers, microbes, and fungi that consume the droppings and the carcasses of other organisms.

Abiotic Factors by Function

The abiotic factors of a forest fall less obviously into functional classifications, but keep in mind that the energy transferred among the various biotic categories is itself a foundational abiotic element. This energy occurs in the form of solar radiation, which includes both visible light and heat (infrared).

Primary producers (plants like trees and shrubs) convert the light into carbohydrates, a form of energy that can be consumed by other organisms. The function of other abiotic factors relies on the minerals they contain, such as the nitrogen in the soil or the hydrogen in water molecules.

An ecosystem consist of various biotic and abiotic factors which interact with each other. A grassland ecosystem is a terrestrial ecosystem which have grass as the main producers (dominant) living thing.

What is a Grassland Ecosystem?

A grassland ecosystem is a type of terrestrial ecosystem in which grasses and the herbaceous plants are the dominant species. Grass controls the grassland ecosystems as they are the main producers of the ecosystem with few or no trees where there is not favorable conditions for a forest. It is more like a dry and desert ecosystem. Therefore, it is also called as a transitional landscape.

The four important abiotic components of grassland ecosystem includes climate, parent material and soil, topography, and natural disturbances. Climate includes the rainfall pattern, temperature and wind patterns of a particular area.

Biotic Factors in the Grassland ecosystem include Plants, Insects (Invertebrates), Grazers, and Predators.

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Other Questions
Select all polynomials that are divisible by (x-1)(x1)left parenthesis, x, minus, 1, right parenthesis. Choose all answers that apply: Choose all answers that apply: (Choice A) A A(x)=3x^3+2x^2-xA(x)=3x 3 +2x 2 xA, left parenthesis, x, right parenthesis, equals, 3, x, cubed, plus, 2, x, squared, minus, x (Choice B) B B(x)=5x^3-4x^2-xB(x)=5x 3 4x 2 xB, left parenthesis, x, right parenthesis, equals, 5, x, cubed, minus, 4, x, squared, minus, x (Choice C) C C(x)=2x^3-3x^2+2x-1C(x)=2x 3 3x 2 +2x1C, left parenthesis, x, right parenthesis, equals, 2, x, cubed, minus, 3, x, squared, plus, 2, x, minus, 1 (Choice D) D D(x)=x^3+2x^2+3x+2D(x)=x 3 +2x 2 +3x+2 the product of a number and 13 increased by 5 is -12 Victor is making recipes for smoothies. His first recipe calls for 2 cups of strawberries and 7 cups of other ingredients. His second recipe says that 3 cups of strawberries are combined with 9 cups of other ingredients. Which smoothie recipe has more strawberries compared to other ingredients? Which RNA strand would match with this DNA strand?AGGCTAAT What is inertia? What is unbalanced force? Which statement describes how this rock was likely formed?slow cooling of magma beneath the surface of Earthrapid cooling of magma beneath the surface of Earthslow cooling of lava on the surface of Earthrapid cooling of lava on the surface of EarthI will mark Brainlyest For Coppertone products, evaluations in the postpurchase behavior stage of the consumer purchase decision process that are most likely to cause dissatisfaction are Pls pls Pls pls Pls Pls help me pls pls pls pls pls pls ASAP pls pls pls Pls pls Pls pls Pls Pls help me pls pls pls pls pls pls ASAP pls pls pls Pls pls Pls pls Pls Pls help me pls pls pls pls pls pls ASAP I WILLL GIVE BRAINLIEST!!!!!!!!! 19 is 50% of what number? round to the nearest tenth Which of the following describes how the author introduces Rosie the Riveter in the text?A. The author provides information on the person who inspired Rosie.B. The author outlines the ideas that Rosie stands for.C. The author describes what Rosie physically looks like.D. The author emphasizes the lasting effects Rosie has had on women. discribe the passive transport movement of a substance down it's concentration gradient through a protein channel embedded in the cell membrane C. Assume you are putting 10 gallons of gas a week in your car for 4 weeks at $2.25 agallon. How much are you spending on gas every month? |I Match the correct definition with its word rough endoplasmic reticulum protein synthesis lysosome store calcium ions nucleus create lysosomes mitochondria create energy through respiration smooth endoplasmic reticulum break down cellular food and waste Golgi body controls cell activity Cape Corp. Will pay a dividend of $4.40 next year. The company has stated that it will maintain a constant growth rate of 5 percent a year forever. a. If you want a return of 17 percent, how much will you pay for the stock? (Do not round intermediate calculations and round your answer to 2 decimal places, e.G., 32.16.) b. If you want a return of 10 percent, how much will you pay for the stock? (Do not round intermediate calculations and round your answer to 2 decimal places, e.G., 32.16.) Which friction static friction, kinetic friction, or air friction? Can be more than one response.Gripping friction.kinetic frictionair frictionstatic friction i just need some help on a few math questions. i'm very bad at math sorry :( 5(2)What expressions is equivalent to this? Why was Anne Hutchinson banished from Massachusetts?She was a womanShe questioned the teaching of the Puritan leaders.She created her own religionShe wanted equal rights for women Please help In chapter ten of the lord of the flies at the castle rock who was in charge Olivia is making bead bracelets for her friends. She can make 3 bracelets in 15 minutes.What does the proportionality constant represent in this situation?