For a student examining the gas inside a helium balloon, if the gas is composed of only helium atoms, the student can conclude that the gas in the balloon is a pure substance.
What are pure substances?Pure substances are substances which are composed of entirely the same type of atoms or molecules.
Pure substances are of two types;
Elements, andCompoundsElements are substances which are composed of the same type of atoms and which cannot be split into simpler substances by an ordinary chemical process.
Helium is an example of an element. It is a gas which is used in the filling of balloons since it is less than air.
Air unlike helium is an impure substance that is composed of a mixture of gases.
For the student who is examining the gas inside a helium balloon, if the gas is composed of only helium atoms, the student can conclude that the gas in the balloon is a pure substance composed entirely of helium gas atoms.
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The cell shown above most likely belongs to an organism of the kingdom ?
A - animalia
B - Plantae
C - Fungi
D - Eubacteria
6. The diagram shows a complete circuit with a battery and a buzzer making
noise. This circuit works by transforming - *
O F. chemical energy to electrical to sound.
G. electrical enengy to thermal to light.
O H. sound energy to electrical to chemical.
O
J. mechanical energy to electrical to sound.
what is brain cancer ?
Answer:
Brain cancer is an overgrowth of cells in your brain that forms masses called tumors. Cancerous, or malignant, brain tumors tend to grow very quickly. The symptoms of brain cancer depend on the size and location of the tumor.
Common brain cancer symptoms include:
headaches that are usually worse in the morning
nausea
vomiting
a lack of coordination
a lack of balance
difficulty walking
memory lapses
difficulty thinking ,speech problems
.Many of the symptoms of brain cancer are also caused by other, less serious conditions. There’s no need to panic if you’re experiencing these symptoms, but it’s a good idea to visit your doctor to have your symptoms investigated, just in case.
Explanation:
g When an oxygen molecule diffuses from the air in the lung into the plasma in a capillary in the lung, how many times does it have to diffuse through a plasma membrane before reaching the plasma
Answer:
The answer is 2.
Explanation:
When oxygen gets into the lungs, it first needs to diffuse through the alveoli and into the blood. Then through the veins and capillaries, it diffuses into all the calls in the body. It does so quite easily because it is a nonpolar and a very small molecule with a low concentration inside the cell. This gives it the ability to diffuse easily through the cell membrane.
So the number of times that oxygen has to diffuse through a plasma membrane is two.
I hope this answer helps.
What new details are you able to see on the slide when the magnification is increased to 10x that you could not see at 4x? What about 40x?
As the magnification increases, more specific information, such as the nucleus of cells on the slide, is seen.
What is magnification?
The majority of compound microscopes include objective lenses, which are replaceable lenses. The most popular magnification powers for objective lenses are 4x, 10x, 40x, and 100x, commonly referred to as scanning, low power, high power, and (usually) oil immersion objectives.
More minute characteristics of the cells and the form of the stained nuclei may be seen at a magnification of 40 times. You can see a smaller area of the specimen because of the reduced field of view at higher magnifications. Furthermore, keep in mind that although appearing to be incredibly thin, the item on the slide actually has a thickness.
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Which correctly describes the male part of a flower?
A. It's called the stamen and is made of the anther and filament.
B. It's called the pistil and is made of the anther and stigma.
C. It's called the pistil and is made of the filament and style.
D. It's called the stamen and is made of the stigma and style.
Answer:
It's called the stamen and is made of the anther and filament.
Explanation:
The male part of the flower is called a stamen and is made of the anther and filament. The female part of the flower is called the pistil and is made of the stigma, style, and ovary.
Also, I took the quiz and this was on it!
A doctor treats a patient with a skin condition with different creams to see which is most effective. What is the independent variable?
1. Skin Creams
2. Skin Conditions
Answer:
1. Skin Creams
Explanation:
An independent variable is the only variable that is changed while the rest is kept the same. In this setup, the doctor is using different creams on the same patient with the same skin condition so the independent variable is the skin cream and not the skin condition.
Earth's rocks change from one type into another, as described in the rock cycle. One type of rock
is known as metamorphic rock. Metamorphic rocks are formed under which of the following
conditions?
I'm not sure have you tried or attempt it??
Answer:
heat and pressureExplanation: Because I say so ⊕
Remember that we see the color of objects because that color bounces off the object and back to our eyes. The other colors are soaked up by the shirt like a sponge. Why do you think the green light is the least effective color to give plants energy to grow?
If the light color is red or purple then the plant will absorb some amount of energy from the light, Green light is the least effective for plants as the plants are themselves green due to the presence pigment Chlorophyll in chloroplast.
what is function of chloroplast ?
Chloroplasts are the membrane bound cellular organelle present in photosynthetic organism like plants and algae, observed in mesophyll cells of leaves and contain a high concentration of chlorophyll pigment which absorb sunlight.
It has extra-nuclear semiautonomous DNA and make food by the process of photosynthesis by absorbing sunlight into chemical energy.
It also involve indirectly in the process of generation of carbon and sugar molecule during the Calvin Cycle or dark reaction of photosynthesis.
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Chlorophyll absorbs energy from blue- and red-light waves and reflects green-light waves during photosynthesis, giving the plant its characteristic green color.
What is the effect of green light in plants?Other pigments, such phycoerythrin, can effectively absorb green light to promote photosynthesis. Additionally, green light can encourage stem elongation, which boosts plant light absorption.
Despite being the visible spectrum's least effective wavelength for photosynthesis, green light is nonetheless helpful and affects plant morphology.
One might occasionally hear that plants reflect green light rather than using it for photosynthesis.
Therefore, green light is the least effective color to give plants energy to grow.
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Analyze the following information and identify the type of mutation –
Original: A T T C G C T T A
Mutated: A T T C C C T T A
Missense
Nonsense
No mutation
Silent
Answer:
missense
Explanation:
the codon CGC is mutated to CCC
while CGC codes for arginine, CCC codes for proline
=> missense
Which type of reproductive strategy do you think is more advantageous for survival? Make a claim and support it with reasoning.
The type of reproductive strategy that may be more advantageous for the survival of an individual is the sexual mode of reproduction due it increases the chances of generating more adaptive (fittest) genotypes and thus superior phenotypes in a given environment.
What are the types of reproductive strategies?The types of reproductive strategies refer to all types of strategies that organisms use to generate more and fittest adapted organisms capable of surviving and reproducing in a given environment, which include, for example, mode of reproduction (e.g. gametic generation), sexual reproduction and/ or asexual reproduction, age of individual during the reproductive stage, etc.
In conclusion, The type of reproductive strategy that may be more advantageous for the survival of an individual is the sexual mode of reproduction due it increases the chances of generating more adaptive (fittest) genotypes and thus superior phenotypes in a given environment.
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I need help with my biology work can anybody help me with this answer please?
Answer:
d
Explanation:
because all those products mixed together will give another product
Answer:
c
Explanation:
Weight measures the _____ of gravity pulling in an object.
Weight measures the downward force of gravity pulling in an object.
Explanation:Weight measures the downward force of gravity that is generated on an object. The weight of an object changes depending on its location. For example, an object located on Earth weighs heavier than when it is on the moon because the Earth exhibits a stronger gravitational force.
What is the role of ATP when large molecules need to be transported across the cell membrane against the concentration gradient?
The bond between the phosphate groups is broken to store energy.
The bond between the phosphate groups is broken to release energy.
Bonds are formed between the adenine and the ribose to store energy
Bonds are formed between the ribose and the phosphate to release energy.
Answer:
b. the bond between the phosphate groups is broken to release energy
Explanation:
Phosphate groups are negatively charged => there is a pull between the two groups=> it's easy to break this bond & ATP is unstable
=> ATP has a lot of free energy
breaking the bond between phosphate groups makes the molecules more stable (aka contains less free energy)=> delta G <0
=> breaking this bond releases energy
the energy released by ATP is then used to transport large molecules against the concentration gradientThe bond between the phosphate groups is broken to release energy. This energy helps in the transport of molecules across the cell membrane against the concentration gradient.
ATP is also called as the energy factory for the cell. It is also required for various metabolic processes within and outside the cell. It has a role in transfer of macromolecules like proteins, lipids, and other into and out of the cell. It is difficult for molecules to be transported into and out of the cell across a cell membrane against a concentration gradient for this energy in the form of ATP is required. When the hydrolysis of the molecule of ATP occurs it releases the phosphate group along with the release of energy this energy is necessary for the active transport of molecules against the concentration gradient across a cell membrane. Hence, the bond between the phosphate groups is broken to release energy. This energy helps in the transport of molecules across the cell membrane against the concentration gradient.Learn more about ATP:
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Question 2 of 30
White-tailed deer eat leaves and grasses in their ecosystem. Which of the
following terms best describes a white-tailed deer?
A. Producer
B. Secondary consumer
C. Primary consumer
D. Predator
SUBMIT
Answer:The answer would be C. primary consumers because primary consumers eat grass.
Explanation:It wouldn't be a producer because producers make their own food.It wouldn't be Secondary Consumer because secondary consumers eat other animals and are carnivore.And t wouldn't be predator because predators hunt for their food and the deer is not hunting for its food.So therefor it would be a primary consumer.
Damage to your computer can be caused by not properly taking care of your equipment. Which of the following should you avoid doing in order to keep your computer in good working order? A. Bundling electrical cords
B. Drinking soda near your computer C. Installing an antivirus program D. Working at a desk
Answer:
B
Explanation:
i did this this year in my 9th grade tech class and got it right
Which is an example of a domesticated work animal?
Answer:
Sheep,dog,buffalo etc
Explanation:
sheep,dog,buffalo etc are the example
Describe the process of positive feedback and how it maintains homeostasis.
(100 points)
Answer:
Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment. Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points
Explanation:
giving brainliest pls help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Man didnt exert force C
Explanation:
If the man and box had the same mass he would still be able to push it so not D
The box is obviously not moving so not B
There is no way the box does not have mass not A
What distinguishes brownfields from other land being considered for development?
Answer:
A greenfield is an area of agricultural or forest land, or some other undeveloped site earmarked for commercial development, industrial projects or other construction projects. Conversely, a brownfield is an abandoned commercial development where hazardous substances or contaminants are typically present.
Explanation:
Answer:
A greenfield is an area of agricultural or forest land, or some other undeveloped site earmarked for commercial development, industrial projects or other construction projects. Conversely, a brownfield is an abandoned commercial development where hazardous substances or contaminants are typically present.
Explanation:
just did it
Which base is found only in DNA?
O adenine
O guanine
O cytosine
othymine
Thymine is the base that is found only in DNA. Adenine, guanine, and cytosine are also present in both DNA and RNA, but thymine is exclusive to DNA. In RNA, uracil replaces thymine.
What are nucleotide bases?Nucleotide bases are the building blocks of DNA and RNA, the genetic material in all living organisms. There are four nucleotide bases in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, uracil (U) replaces thymine. These bases pair with each other to form the "rungs" of the DNA ladder, with A always pairing with T (or U in RNA) and C always pairing with G.
The sequence of nucleotide bases in DNA determines the genetic information carried by an organism. DNA replication, the process of copying DNA before cell division, relies on the complementary base pairing of nucleotide bases to ensure that each new strand of DNA has the same sequence as the original.
Mutations, or changes, in the sequence of nucleotide bases can occur naturally or as a result of external factors such as radiation or chemical exposure. These mutations can lead to genetic variations and may have consequences for the organism.
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Forest butterflies are often brown. This helps them to
Answer:
Avoid predators
Explanation:
Organisms often mimic their surroundings to escape the predators. This technique is also called camouflaging.
Forest butterflies have also adopted several structural adaptations to avoid predators. Many of them have brown wings with jagged edges so that they resemble dried leaves. In this way, they blend with their surroundings, especially the forest floor, and go unnoticed. On the other hand, butterfly larvae are green in color so that they resemble the leaves on which they feed and avoid predators.
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Answer:
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Explanation:
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does anyone have the cell respiration virtual lab
Answer:
No, I haven't learn that when I learn it I will teach you everything I know
what is the tube connecting the ovary to the uterus called
Answer: Fallopian tube
Explanation:
The fallopian tube is where eggs travel from the ovaries to the uterus
What are two substances that are stored by the bones
Answer:
The bone stores 99% of the body's calcium and 85% of the phosphorus. It is very important to keep the blood level of calcium within a narrow range.
help biologiy!!!!! first answer brainliest
Answer:
1. - B
2. - A
3. - C
Explanation:
1. Body proteins amino acids.
2. Complex body carbs glucose.
3. Fat stores fatty acids and glycerol.
Hope it helps!<3
Answer:
coloum A
1. fat sources are amini acids
2. complex body carbs are gloucose
3. complex body carbs are fatty acids and glycreol
The Earth's resources can be conserved
a. only by the actions of industry.
b. by reducing the use of
nonrenewable
resources.
c. if people do
whatever
they want to
do.
d. by throwing
away all our
trash.
please help thank you
Answer:
The answer is B All the way
Explanation:
please appreciate my help by giving me brainliest
Which role does photosynthesis play in the flow of energy? (1 point)
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
Photosynthesis is how plants break down glucose to use for energy.
Photosynthesis allows plants to create energy for themselves to store and use for metabolism.
Photosynthesis provides radiant energy to all the organisms in the entire food chain.
Answer:
Radiant energy transformation that takes place during photosynthesis
Explanation:
Radiant energy transformation that takes place during photosynthesis
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as cellular respiration
Brainliest please
Photosynthesis converts radiant energy to chemical energy to be used by the organisms in the food chain .
What is photosynthesis?
It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy through the process of cellular respiration.
Some of the energy which is converted is stored in molecules of carbohydrates like sugar and starches which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.
The process begins with proteins absorbing light energy which are called reaction centers and contain a green pigment which is called chlorophyll . In plants ,these pigments are present inside organelles called chloroplasts while in bacteria they are present in plasma membrane.
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Monarch butterflies are toxic when eaten. Viceroy butterflies look like monarchs and, therefore, don’t get eaten. What defense is the Viceroy using?
A. Chemical defenses
B. Mechanical defenses
C. Mimicry
D. Camouflage
Answer:
Mimicry
Explanation:
"Vicerory butterflies look like monarchs". They are mimicking the appearance of the monarch to protect themselves because monarchs are toxic.