The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of water into and out of the cell in an aquatic environement. What condtions cause the contracile vacuole to fill with water? Your answer: A.The concentration of water is greater outside the cell than inside the cell. B.The concentration of water inside the cell is the same as the concentration outside the cell. C.The temperature of water in the vacuole is higher than the temperature of its environment.
Answers
Answer:
A. The concentration of water is greater outside the cell than inside the cell.
Explanation:
This is a question having to do with tonicity, or the concentrations of solutes or solvents across a membrane. In these conditions, there is a hypotonic solution inside the cell (hypo means low, because there's less water inside), which will cause water to come inside.
The contractile vacuole stops the cell from exploding by regulating the amount of water that can come in. Otherwise, it would lyse, or split open.
Related Questions
What property of water allows fish and other animals to swim below the
frozen surface of lakes and rivers during the winter?
A. Solid water is denser than liquid water.
B. Solid water is less dense than liquid water.
C. Solid water is warmer than liquid water.
D. Solid water is colder than liquid water.
Answers
Ecosystems are closed environments.
TRUE
FALSE
Answers
Which event in Earth's history most directly allowed life to exist on land?
Earth's temperatures increased, causing widespread evaporation.
Earth collided with a large object, forming the moon.
Single-celled organisms released oxygen into the air when they photosynthesized.
Single-celled organisms absorbed harmful gases from the air when they first formed.
Answers
Answer:
c; Single-celled organisms released oxygen into the air when they photosynthesized.
Explanation:
Got it right on edge
Answer:
c
Explanation:
9b-4-56-7
Your answer
Answers
Answer:
j
Explanation:
What happens during G2 phase?
Answers
Answer:
During the gap between DNA synthesis and mitosis, the cell will continue to grow and produce new proteins. At the end of this gap is another control checkpoint (G2 Checkpoint) to determine if the cell can now proceed to enter M (mitosis) and divide.
The outside of a bacterial cell is protected by a structure called a ??
Answers
What is a herbivore?
A. an animal that gets energy from eating other animals
B. an organism that gets energy from eating only plants
C. an animal that gets energy by eating both plants and other animals
D. an animal that eats only herbs
Answers
definition: A herbivore is an animal that gets its energy from eating plants, and only plants.
An herbivore is an animal or organism that gets energy from eating only plants, which is present in option B. Examples are the goat, cow, etc., and they eat the producers, such as the plants.
What is the role of the herbivore?The herbivore is the animal that directly eats the plants of the ecosystem, which are later eaten up by the carnivore, and the herbivore gets more energy than the carnivore as they get energy directly from the plant source. The herbivore only eats plants, and the different ecosystems have different herbivores, such as the land ecosystem, which has the goat, elephant, cow, etc.
Hence, an herbivore is an animal or organism that gets energy from eating only plants, which is present in option B. Examples are the goat, cow, etc., and they eat the producers, such as the plants.
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All of the following are likely to influence your response to stress EXCEPT
your friends level of stress
your personality
your general health status
your past experiences
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Answer:
Ｉ ｔｈｉｎｋ ｔｈｅ ａｎｓｗｅｒ ｉｓ ｙｏｕｒ ｆｒｉｅｎｄ ｌｅｖｅｌ ｏｆ ｓｔｒｅｓｓ
Alleles are:
A)different genes
B)building blocks of DNA
C)proteins
D)alternate forms of a gene
Answers
Answer:
Alternate form of gene
Explanation:
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.
Answer:
its D Alternate form of gene
Which of these is a form of nonrenewable energy?
O A. Fossil fuel energy
O B. Solar energy
C. Wind energy
O D. Hydroelectric energy
Answers
Answer:
Fossil fuel energy
Explanation:
This is because oil from fossils take a millions of years to form and people won't be able to wait millions of years
Fossil fuel energy is a form of non-renewable form of energy. Thus, the correct option will be A.
What is Non-renewable energy?A non-renewable energy resource is a natural resource which cannot be readily replaced by the natural means at a particular pace which is quick enough to keep up with the consumption of the energy resource. An example of the non-renewable energy resource is a carbon-based fossil fuel. The original organic matter with the aid of heat energy and pressure generally becomes a fuel such as the oil or natural gas.
There are four major types of the nonrenewable resources which include oil, natural gas, coal, and the nuclear energy. Oil, natural gas, and coal are collectively known as the fossil fuels. Fossil fuels were formed within the Earth from the dead plants and animals over a period of millions of years and hence are named as the fossil fuels.
Therefore, the correct option will be A.
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Which are the physical (P), chemical (C), and biological (B) immune responses?
OP: complement system; C: saliva, B coughing
P: coughing; C. saliva; B: complement system
OP: coughing: C sneezing: B complement system
OP: complement system: C saliva, B: sneezing
Answers
Answer:
P:coughing; C. saliva: B: complement system
Explanation:
The physical, chemical, and biological immune responses are complement system, saliva, and coughing. Therefore, the correct statement is option A.
What is complement system?The complement system is a physical immune response consisting of a group of proteins working together to kill pathogens that enter the body. Saliva is a chemical immune response, which involves secretions, such as sweat, tears, mucus, etc. containing enzymes that can inhibit the growth of pathogens.
Coughing is biological immune response that activates the immune cells such as macrophages and T cells that can recognize and attack pathogens entering the body.
The complement system involves the production of proteins to destroy foreign bodies. Saliva and coughing are chemical and physical responses to expel pathogens from the body, thereby, providing immunity to the body.
Therefore, complement system is identified as physical immune response, saliva as chemical immune response, and coughing as biological immune response.
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5. What is pretexting? How is this used?
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Match each word to its correct meaning.
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Answer:
Radioactive decay means the process by which unstable nucleus of an atom spontaneously releases energy through the emissions of radiation used in dating fossils and rocks.
Relative dating mean the time required for half the atoms in an element to divide in half.
Explanation:
So radioactive decay belongs to A.
And relative dating belongs to B.
Please mark Brainlist if right
In ancient times, plant and animal remains got buried, compressed, and transformed into fossil fuels like coal. Burning these fossil fuels today will affect which biogeochemical cycle?
Answers
what are the three heartbeat stadiums
Answers
Motera Stadium
Michigan Stadium
Part of ecosystem
Contains energy storage molecules? (yes or no)
Energy storage molecules flowing in? (yes or no)
Energy storage molecules flowing out? (yes or no)
Producers
Consumers
Decomposers
Dead matter
Abiotic matter
Pls the question at the top are to be asked for each one
Answers
Answer:
From the question, here are the answers.
1. Yes.
2. Yes.
3. Yes.
Producers
Consumers.
Decomposers
Dead matter
Abiotic factors
Explanation:
An ecosystem consist of communing of both living organisms (biotic factors) and non living organisms(abiotic factors) interacting together. These biotic and abiotic factors are connected together through nutrients cycle and energy flows.
The abiotic factors are non living part of the ecosystem and they consist of sunlight, temperature, wind, water, soil e.t.c.
The biotic part consist of the living part and they include plants and animals. Ecosystem consist of producers, consumers, decomposers, dead matter,abiotic factor, energy storage molecules energy storage molecules that flow.
1. Yes.
2. Yes.
3. Yes.
The explanation regarding Producers , Consumers., Decomposers , Dead matter , and Abiotic factors is explained below:
An ecosystem comprise of both living organisms (biotic factors) and non living organisms(abiotic factors) These biotic and abiotic factors are connected together through nutrients cycle and energy flows. The abiotic factors are non living part of the ecosystem such as of sunlight, temperature, etc.The biotic part consist of the living part and they include plants and animals. Ecosystem consist of producers, consumers, decomposers, dead matter,abiotic factor, etc.
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Which of the following describes the difference between drama and other prose and poetry?
Unlike other literary genres, drama is written to be performed.
Drama is closer in length to a short story than it is to a novel.
Dramas do not contain a theme or lesson to be learned.
Dramas were only written before 1900 and are no longer written today.
Answers
Answer
es la a
Explanation:
es la a porque:
A. diferencia de otros géneros literarios, el drama está escrito para ser interpretado.
Answer:
A
Explanation:
Which of the following statements accurately explains why most cells are
small?
A. Small cells reproduce more slowly than larger cells.
B. Many small cells can transport more materials into and out of the
cell than a single large cell can.
C. Small cells reproduce more quickly than larger cells.
D. One large cell is able to transport more materials into and out of
the cell than many small cells are.
Answers
Answer:
B. Many small cells can transport more materials into and out of the
cell than a single large cell can.
Explanation:
when cells grow bigger, material can't cross the membrane fast enough so, they divide into smaller cells. This is why cells are so small.
Answer:
The ansswer might be B. Hope this helps. Please tell me if right or wrong.
Explanation:
What is a slime mold's reproductive cell called?
egg
spore
amoeba
protest
ERGENT!!!
Answers
Answer:
Spore
Explanation:
Hope u get it right!
4. What is Card Stacking?
Answers
What are the pros and cons of having the digestion be slower and over distance, as opposed to being quicker and over shorter distance with slightly less absorption?(40 points)
Answers
Answer:
Explanation: When you have a slow digestive system, a condition known as gastroparesis or delayed stomach emptying, these muscles don't work properly. They either contact too slowly or don't work at all and, as a result, your stomach doesn't empty properly.
Eating slowly also helps our digestion. Think of digestion as a chain reaction. As soon as we see, smell, or think about food (step 1), we start salivating to prepare for putting that food in our mouth (step 2). Saliva contains enzymes that break the food down, and moistens the mouth for easier swallowing.
WILL GIVE BRAINLIEST AND 30 POINTS! Write one scientific question about the organism in the photo.
Answers
Answer:
What is the life cycle of a sunflower
Explanation:
Edit: I didn't get my 30 points I want a refund
Answer:
how many hours of sunlight do the sunflowers need
Phosphorus is difficult for plants and animals to access in nature because____
Answers
Answer:
If soils are too acidic, phosphorus reacts with iron and aluminum. That makes it unavailable to plants. But if soils are too alkaline, phosphorus reacts with calcium and also becomes inaccessible.
Explanation:
Which of the following plant parts does the fruit develop from?
1) stigma
2 ) pistil
3 ) ovary
4)none of the above
Answers
explanation: the fruit is the ripened ovary of a plant containing the seeds
Which is only active during a specific immune response?
O A. Lysozymes
O B. Neutrophils
O C. Macrophages
O D. B cells
Help me please
Answers
B cells are only active during a specific immune system. Thus, the correct option is D.
What is the immune system?The immune system may be defined as the complete set of cells and organs that defends the body against foreign invaders to prevent the cause of infection and disease.
Lysozymes, neutrophils, and macrophages provide a general mechanism to defend your body against foreign invaders because these are the cells of innate immunity.
While B cells are only active during a specific immune system because these cells are part of adaptive immunity and deliver a specific response to a particular foreign agent.
Therefore, B cells are only active during a specific immune system. Thus, the correct option is D.
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Which of the following structures would be used to identify a prokaryotic cell? A. mitochondria, Golgi body and lysosomes B. cell wall, flagella and chloroplasts C. cell membrane, ribosomes and a chromosome
Answers
Answer:
the is b- cell wall,flagella and chloroplasts
Crossing a BB parent with a bb parent results in
Answers
Answer:
All dominant allele children with the genotype Bb
Explanation:
Use a punnet square to see how. It's quite simple when u learn the logistics :)
Hope this Helps!
When the two parental genotypes BB and bb are crossed, the genotype of all [tex]F_1[/tex] plants is Bb.
What is Genotype?An organism's genotype is defined as the complete set of genetic material that can also be used to refer to alleles or variants that occur in a particular gene or genetic locus.
The term "genotype" describes the genetic makeup of an organism as it describes the complete set of genes of an organism. This term can be used to refer to alleles, or variants of genes, carried by an organism.
When two organisms like BB parent crossed with bb parent, the offsprings that will produce is Bb.
Thus, when the two parental genotypes BB and bb are crossed, the genotype of all [tex]F_1[/tex] plants is Bb.
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In affected colonies ________________.
a. There is no queen bee
b. The food stores remain untouched
c. There are dead bees everywhere
d. The comb has disintegrated
2. Colony collapse disorder will only affect the price of honey.
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Which option describes cations?
Answers
Answer:
D
Explanation:
A cation is a positively charge ion, such as a sodium ion, as when it becomes an ion, it gives away electrons, becoming positively charged.
The opposite is an anion, which is a negatively charged ion, such as oxygen as it receives elections from the cation when forming an ionic bond.
Cations are the positively charged ions.
What are cations?A cation has more protons than electrons, consequently giving it a net positive charge. For a cation to form, one or more electrons must be lost, typically pulled away by atoms with a stronger affinity for them.
The number of electrons lost, and so the charge of the ion, is indicated after the chemical symbol, e.g. silver (Ag) loses one electron to become Ag+, whilst zinc (Zn) loses two electrons to become Zn2+.
In contrast, most nonmetallic atoms have a stronger attraction to electrons than do metallic atoms, and as a result, they gain electrons to form anions.
Therefore, Cations are the positively charged ions.
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A type of cellular transport is shown. Which description best identifies this type of cellular transport? Your answer: A.Osmosis, because energy is being used to move molecules with the concentration gradient. B.Active transport, because energy is being used to move molecules against the concentration gradient. C.Facilitated diffusion, because energy is being used to move molecules with the concentration gradient.
Answers
Answer:
B. Active Transport
Explanation:
The concentration gradient is from high to low. The molecules are moving from low to high which is against the concentration gradient. Also, the ATP symbol is shown pointing, and ATP is energy.
The description that best identifies the type of cellular transport being depicted in the image would be that of active transport because energy is being used to move molecules against a concentration gradient.
There are basically 2 types of cellular transports:
PassiveActivePassive cellular transports are those that do not require energy in any form. They include osmosis, the movement of water molecules from the region of high to low water potential via a semi-permeable membrane, and simple/facilitated diffusion, the movement of molecules from regions of high concentration to regions of low concentration.
Active transports are those movements of materials in and out of the cell that requires the expedition of energy in the form of ATP. It is usually the movement of materials against their concentration gradients. Examples include vesicle transport, ion pumps, etc.
In the illustration, the direction of movement of the molecules (by the arrow) indicates that it is against the concentration gradient. Also, the burning of ATP gives further credence that is an active system of cellular transportation.
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