Answer:
b
Explanation:
DID IT
Mercury is used in thermometers to estimate temperatures. Liquid mercury composed of Hg atoms is a pure substance that consists of single elements. Thus, option B is correct.
What are pure substances?Pure substances are chemicals that are matter and have been known to have distinct chemical properties because of their constant and definite composition. The physical methods of separation can not be used to separate the pure substances.
The liquid mercury is a pure substance as it has been composed of only one type of elemental atom Hg. All of its composition has been carrying the Hg atoms uniformly that possess and exhibit the same chemical and physical characteristics.
Therefore, option B. the liquid mercury is a pure substance as it is made of the same type of element.
Learn more about pure substances, here:
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Scientists believe that cancer occurs when
O A. cells stop dividing.
O B. DNA is damaged and cells grow out of control.
C. body cells begin going through meiosis,
OD. cells cannot replicate their DNA.
PLS HELP I WILL GIVE BRAINLIEST
Answer:
B
Explanation:
DNA is damaged and cells grow out of control
Cellulose is a type of
A. protein
B. carbohydrate
C. grass
D. lipid
B Because Cellulose is a polysaccharide consisting of linear chain of numerous linked D-glucose units whereas proteins are formed of number of amino acids linked together by peptide linkage.
Cellulose is a polysaccharide and a structural component of the plant cell. It is a carbohydrate made of many monomers linked together. Thus, B is the correct option.
What is cellulose?Cellulose is an organic chemical that is insoluble in water and is a tough structure classified as carbohydrates. Cellulose is a structural component of plant cells.
It is made by monomer units linked by the beta-1,4 glycosidic bonds and is a biodegradable, tasteless organic compound with the chemical formula (C₆H₁₀O₅)ₙ.
It is the main component of the plant cell wall that provides support and shape due to its fibrous structure. It is made of linear chains of D-glucose units that makes the polysaccharide.
Therefore, option B. cellulose is a carbohydrate.
Learn more about cellulose here:
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Which effects would many organisms likely experience if global warming occours check all that apply
Disrupted food webs
Increased competition
Increased number of glaciers
Disrupted life cycle events
Forced relocation
Answer:
A. disrupted food webs B. increased competition D. disrupted life-cycle events E. forced relocation
How can a ‘FIXED’ cell be used to estimate the time spent in each phase of mitosis.
Which will have the greatest impact on the effects of disease in a population?
Answer:
Nutrition is the answer bcz without nutrition the diseases will effect more in a population
How do human beings negatively affect the carbon cycle?
Human beings burn fossil fuels, which contribute carbon dioxide to the atmosphere.
Human beings conserve resources, which decrease resources for the carbon cycle.
Human beings mine resources, which increases the amount of oxygen available to the carbon cycle.
Human beings use carbon-based pencils, which decreases the amount of carbon dioxide in the atmosphere.
Eww
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
Brainliest please?
differentiate between arteries and veins what is the importance of capillaries in the circulatory system.
Answer:
Arteries-1.Involved in carrying pure, oxygenated blood and nutrient-rich blood.
2.Consists of three distinct layers, which are rigid, thicker and highly muscular.
3.Located deep within the body.
4.Red in colour.
5.Carry blood away from the heart to various parts of the body.
6.High pressure, as the blood flows by the pumping pressure of the heart.
7.Comparatively higher oxygen level.
8.The level of carbon dioxide is low
9.Lumina is narrow
10.Valves are absent
11.Arteries are at a greater risk of certain diseases like angina pectoris, atherosclerosis, etc.
Veins-1.Involved in carrying impure, deoxygenated blood
2.Consists of three distinct layers, which are thin and collapsible.
3.Peripherally located closer to the skin.
4.Blue in colour.
5.Carry blood towards the heart from the various parts of the body.
6.Low pressure, as the blood flows by the capillary action of the veins.
7.Comparatively low oxygen level.
8.The level of carbon dioxide is high
9.In upward direction from the body tissues to the heart.
10.Lumina is wide & Valves are present.
11.Veins are less susceptible to diseases such as varicose veins.
Though tiny, the capillaries are one of the most important parts of the circulatory system because it's through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries.
Explanation:
Hope this helps you
Crown me as brainliest:)
All 12 body systems interact to maintain ________________.
Answer:
homeostasis!
Explanation:
Answer:
The body systems constantly interact with each other to maintain homeostasis.
HEEEELP! ASAP! What similarities and differences do you see in the two organisms in image 3?
Answer:
⟱⟱⟱
Explanation:
similarities
thick skin
tusk
feet
differents
height
tail
ears
Answer: Similarities : Tusks, trunk, legs, floppy ears.
Differences : Smaller ears, shorter (smaller build), shorter tail, different facial shapes.
Explanation:
I hope I listed what you needed! Have a fantastic day and good luck! (:
best answer gets brainliest
list the biotic and abiotic factors in this image
Answer:
Biotic:
BearMooseTreesEagleBirdFishDucksOtterFernsGrassButterflyAbiotic:
RocksWaterCloudsMountainExplanation:
Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.
Hope this helps.
2.Which of the following is NOT an example of symbiosis? A. red blood cells containing malaria. B. vines using a tree for support C. nitrogen-fixing bacteria and the roots of legumes D. pigs feeding at a trough
Answer:
A. red blood cells containing malaria
Explanation:
Malaria is a disease-causing pathogen in humans. It is caused by species of the parasite Plasmodium sp., which is transmitted as sporozoites by the Anopheles mosquito upon biting the host. These travel through the bloodstream to the liver where they mature into merozoites. These reenter the bloodstream and mature into trophozoites and schizonts that produce more merozoites.
When they multiply within the red blood cell, they burst the red blood cell open, and go on to infect other cells. This infection's symptoms are cyclic and include high fever, chills and other flu-like symptoms.
Malaria is a deadly illness, causing harm to its hosts, and in many cases death. Thus, this cannot be defined as symbiosis, which is typically beneficial to both organisms.
In eukaryotes, the Krebs cycle takes place within the
How many stages are there in cellular respiration?
Answer: three stages
Explanation:
Answer: There are three stages
Explanation: Cellular respiration occurs in the cells of all living things, both autotrophs and heterotrophs. All of them burn glucose to form ATP. The reactions of cellular respiration can be grouped into three stages: glycolysis, the Krebs cycle (also called the citric acid cycle), and electron transport.
Un organismo con un caracter genotípico heterocigote presentará, excepto A Alelos iguales B una linea híbrida C alelos diferentes D una linea pura E a y d
Answer:
C alelos diferentes.
Explanation:
Los alelos son las distintas formas en las que un gen puede ser expresado. Cuando un gen es dialélico implica que puede haber dos formas diferentes del mismo gen, una dominante y otra recesiva. Estos alelos serán heredados de la línea parental en la que un progenitor aporta un alelo y el otro progenitor aporta otro alelo, que se combinaran durante la formación del cigoto. La combinación de alelos de un mismo gen en un organismo determina la forma en la que determinada característica será expresada en el individuo.
• Cuando dos alelos iguales se combinan en un organismo, se habla de un genotipo homocigota. Estos alelos pueden ser los dos dominantes o los dos recesivos.
• Cuando se combina un alelo dominante con uno recesivo, se habla de genotipos heterocigotos. El individuo que posea un genotipo heterocigota, portará ambos alelos pero expresará el fenotipo del alelo dominante.
A solution with a hydroxide (OH-) ion concentration greater than water would be a?
A) acid
B) base
C) neutral
D) ion
Answer:
B) base
Step-by-step explanation:
Acids have a higher concentration of hydrogen ions. Bases have a higher concentration of hydroxide ions.
How Is the Earth Changing? How would you answer this question now?
Answer: Climate change
Answer:
Humans—more specifically, the greenhouse gas (GHG) emissions we generate—are the leading cause of the earth's rapidly changing climate. Greenhouse gases play an important role in keeping the planet warm enough to inhabit. But the amount of these gases in our atmosphere has skyrocketed in recent decades. Global sea level rise is complex as well. To begin with, it has multiple causes, including the thermal expansion of the ocean as it warms, runoff of melt water from land-based ice sheets and mountain glaciers, and changes in water that’s stored on land. These factors combine to raise the height of our global ocean about 3.3 millimeters (0.13 inches) every year. That rate is accelerating by another 1 millimeter per year (0.04 inches per year) every decade or so.
Explanation:
Which of the following are abiotic factors that shape ecosystems?
Group of answer choices
As the average kinetic energy of the particles in a gas increases, which of the following
occurs? (1 point)
The temperature of the gas increases.
The temperature of the gas decreases.
The number of particles increases.
The number of particles decreases.
Answer:
Amontons’s law. If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. If the volume is held constant, the increased speed of the gas molecules results in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure
16. What explanation can be used to describe the test tube shown?
5 points
A. Water is polar and oil is polar therefore the substances will not mix.
B. Water is nonpolar and oil is nonpolar therefore the substances won't mix.
C. Water is nonpolar and oil is polar therefore the substances will not mix.
D. Water is polar and oil is nonpolar therefore the substances will not mix.
Answer:
Water is polar and oil is nonpolar so the substances won't mix.
Explanation:
Water is polar covalently bonded within the molecule. This unequal sharing of the electrons results in a slightly positive and a slightly negative side of the molecule. oils are nonpolar, so they will remain separate from molecules of a polar solvent such as water.
Which organisms inhaled CO2 and exhaled 02 to 100s of millions of years, increasing the amount of O2 in the atmosphere?
Answer:
Plants
Explanation:
Plants 'inhale' CO2 and 'exhale' O2.
Can some one help me plzzzzzz
Answer:
you are correct it is it relieves energy from mitochondria
During glycolysis, what is the source of the chemical energy that is captured in ATP?
A. the chemical bonds in pyruvic acid
B. the chemical bonds in glucose
C. the nuclei of atoms in glucose
D. high-energy electrons in the cytoplasm
The study of the cell is called cell biology.
The correct answer to the question is option B which is the chemical bonds in glucose.
What is glycolysis?The breakdown of glucose into pyruvic acid is called glycolysis.
According to the question, the source of the ATP is by breaking down the glucose molecule and forming the ATP by gaining the extra phosphate molecule.
For more information about the glycolysis, refer to the link:-
https://brainly.com/question/14688752
Influenza (the flu) is caused by a virus that attacks the respiratory system. Which type of gene is most likely to be widely expressed in the body of someone who contracts the influenza virus?
the gene that controls the production of stem cells
the gene that controls the production of skin cells
the gene that controls the production of red blood cells
the gene that controls the production of white blood cells
Answer:
D is the correct option.
Explanation:
all my answers got deleted.
Answer: THE ANSWRER IS D
Explanation: I TOOK THE TEST
List and describe one example of a food chain that contains at least 4 organisms and 4 feeding relationships.
HELPP PLEASEEE
Answer:
grass, rat, snake, hawk
Explanation:
ones eats d other
Answer:
plant, insect, mouse, owl
plant makes food from the sun
insect eats plant
mouse eats insect
owl eats mouse
How many neutrons are in a nucleus of an atom that
has an atomic mass of 16 and an atomic number of
Answer:
4
Explanation:
What is Kingdom Monera?
Answer:
Monerais a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria.They are single-celled organisms with no true nuclear membrane (prokaryotic organisms).
Explanation:
The apples at the local supermarket have been genetically engineered to resist warmer temperatures than they did before. What do these apples contain? transgenic DNA transgenic organisms recombinant DNA recombinant organisms
Answer:
recombinant DNA
Explanation:
i took the quiz
Answer:
Recombinant DNA.
Explanation: This is the correct answer on Edge 2020 (just took the quiz and made a 100% ^-^).