Answer:
The state of gathering together.
Explanation:
Concentration is a noun and it refer to the act of gatthering closely or the state of gathering together or condition of collecting things or substances together.
In biochemistry it can mean the measure of the ratio of mass to volume in a solute and ratio of mass to volume of a solvent in a solution.
Waste produced by agriculture, mining, households, industry and other
human activities can end up in which of the following?*
A: Oceans
B:groundwater
C:streams and rivers
D:all of the above
Should we build more nuclear plants why or why not?
Answer:
I think not bc its bad for the environment.
HELPPP!!! What would the mass of an artificial cell containing 20mL of a 25% sugar solution be after it was placed in a beaker containing a 30% sugar solution for 30 minutes? Remember to include units in your answer.
Answer: The sugar will move from the 50 % concentration to the 0 % concentration.
Explanation:
Dialysis is an analytical technique which uses a semipermeable membrane in order to remove the impurities from the body.
This technique is used when the kidney failure inside the body takes place. The kidney inside the body perform function of filtration, when kidney failure takes place then the dialysis is used.
In this case the tubing bag containing 0% sugar is put into a sugar solution having 50% solution.
After sometime the sugar will move from 50 % to 0% bag because of the phenomenon known as osmosis.
True or False? My brain refuses to compute.
Volume is defined as the amount of mass that an object has.
Answer: true
Explanation: it takes up as much space as it has
Why were Wegener's ideas about continental drift initially rejected
Answer:
The main reason that Wegener's hypothesis was not accepted was that he suggested no mechanism for moving the continents.
Explanation:
It wasn't until 1928 that a Scottish Geologist, Arthur Holmes, came up with an explanation for why continents move. He believed that heat traps in the Earth caused convection currents. There were areas where fluids trapped beneath Earth's crust heat up, rise, spread laterally, then cool and drop back down. This hypothesis didn't have a wide acceptance either but was revived in the 1940s and 1950s when scientists started to learn more about the seafloor and the magnetic properties of oceanic crust.
Hope this helps!
Brain-List?
Heredity is the way animals and plants pass traits on to their offspring. True False
Answer:
False
Explanation:
False because Plants and Animals get their traits from their parents. Each offspring is a mix of both parents
Which statement describes a law based on a tested hypothesis explains how the process occurs describes something about the natural world subject to change as new evidence is discovered
Answer:
based on a tested hypothesis
Explanation:
Laws are generally based on tested hypotheses.
Theories are first derived from repeatedly tested and proven hypotheses. Scientific laws are derived from theories that have been proven to be true over a wide range of phenomenon. Hence, laws are overwhelmingly proven facts that cannot be changed.
Scientific laws are internally consistent, compatible with evidence, and are testable against a wide range of phenomenon. However, they can be reviewed as more evidences emerge that have not been known before.
define immunology?
please answer this question
Answer: See explanation
Explanation:
Immunology is a vital branch of biological sciences that has to do with how the immune system is being studied.
The function of the immune system to our body is vital as it helps in protecting against diseases. The person that diagnose, and treats immunologic conditions, is referred to as an immunologist.
Which of the following has the stages of getting food products to consumers in the
correct order?
Distributer, wholesaler, retailer, packager
Harvester, wholesaler, processor, distributer
Processor, packager, harvester, retailer
Producer, packager, distributer, retailer
plssss this is for my final exam :(
True or false a mutation is a random change in DNA
false let me now if this helps
In what stage does DNA synthesis occur? And what gets produced?
S phase; homologous pairs
S phase; sister chromatids
G phase, homologous pairs
G phase, sister chromatids
Answer:S phase
Explanation: or aka the 3rd phase
Multiple choice!!!
Long term environmental change to an area is likely to create selective pressure that will
A. mutate the genetic makeup of organisms
B. influence adaptations of populations over time.
C. cause a decrease in reproductive rates.
B. allow organisms to select the best adaptations.
what are infectious agents?
A. agents that investigate a different type of infection
B. attackers that can cause a response by the immune system
C. attacker that cannot cause a response by the immune system
D. infectious agents are always good for the human immune systeme
Compared with mitosis, the process of meiosis results in daughter cells that are-
A. haploid cells with the same number of chromosomes as the parent cells
B. haploid cells with a smaller number of chromosomes than the parent cells
C. diploid cells with a smaller number of chromosomes than the parent cells
D. diploid cells with the same number of chromosomes as the parent cells
Answer:
Explanation:
eAnswer: Haploid cells with a smaller number of chromosomes than the parent cell
Explanation: meiosis results in four daughter cells which are haploids. Haploids have half the number of chromosomes of the diploid parent cell.
What does RNA do?
Is it just me or is every telling me to just die today.... like many of my friends said i should just kiII myself, that it would be better for everyone because no one would miss me... or is that juts me?
Answer:
The RNA carries out these instructions; it copies and transfers the genetic code from the DNA to ensure the relevant proteins are made. So just think of it as “DNA makes RNA make proteins”. Whereas DNA stands for deoxyribonucleic acid, RNA stands for ribonucleic acid.
Explanation:
Nooooo! Please, don't feel that way. I'm sorry you have to go through something like that. If you want someone to talk to everyday and tell me about your day then you can always talk to me or add me! Just know that I'm always here to love you, and support and care for you!
What happens to energy that is transmitted through or reflected off a material?
When light is transmitted through or reflected off a material, the light is converted into heat.
What is light?Light is an entity that make things visible to eyes. It is an electromagnetic radiation. It can not be produced or end, it's just converted into one form to another form.
The item may absorb the light wave, in which case its energy is changed to heat. The object might reflect the light wave. Additionally, the object might transmit the light wave. When this happens, things often selectively absorb, reflect, or transmit certain light frequencies.
The light is passed through some objects and do not get passed through some objects. The light that do not pass through an object is reflected back to the same place, but when it is not reflected, it converts into heat.
Therefore, the light is converted into heat when it is not reflected.
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A _____ is any push or pull in a direction.
1. force
2. inertia
3. friction
4. velocity
Answer:
1. force
Explanation:
A force is any push or pull in a direction.
If a bat, an alligator, and a bird evolved from a common ancestor, what most likely can be concluded
A. They are able to survive changes in their environments
B. They live in the same part of the world
C. They have similar anatomical structures
D. They are in the same biological classification
If a bat, an alligator, and a bird evolved from a common ancestor, most likely can be concluded that they have similar anatomical structures. Thus, option C is correct.
What are the different structures of animals?Structures of animals that have different appearances and functions but seem to have evolved from the same body part in a common ancestor. This can be found in Cat's leg and human arms.The structure do not need to look the same or perform the same functions.
The analogous structure evolve in different species living in two different geographic location with similar environmental conditions. Thus, the analogous structures have similar function and purpose but since they have not evolved from the same ancestor their structure vary a lot for example – wings in both birds and butterfly are meant for flight but their structure is entirely different.
The arrangement of bones is identical in all three organisms. This effectively means that all these organisms gradually evolved from a common ancestor.
Therefore, If a bat, an alligator, and a bird evolved from a common ancestor, most likely can be concluded that they have similar anatomical structures. Thus, option C is correct.
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What is the graphical representation of age structure known as?
OA.
age group
OB. age graph
Oc. age scale
OD
age pyramid
Answer:
The graphical representation of the age structure is known as age pyramid (option D).
Explanation:
The age pyramid or more properly called population pyramid groups all the individuals of a population, distributing them by age and sex. The name is due to the fact that, in general, the bar graph resembles a pyramid.
The age groups are distributed in the pyramid by age from lowest (bottom) to highest (top), with the sexes forming the sides of the pyramid.
In emerging countries the population is relatively young, which makes the base of the pyramid wide, narrowing as it moves up to the upper age groups.
Age group, age graph or age scale do not correspond to the population graph where the age and sex structure of a population are expressed.
Answer:
Option D (i just took the test)
Explanation:
When we speak of life possibly outside of Earth, we use the term ______
Answer:
Extraterrestrial.
Explanation:
It means of or from outside the earth or its atmosphere.
Answer:
we use the term extraterrestrial life
Explanation: extraterrestrial life is hypothetical life which may occur outside of earth and which did not originate on earth.
You are comparing the density of sea water to the density of fresh water. (Remember,
density is mass divided by volume.) Describe how you could determine the density of
sea water, including the names of the equipment needed to make the required
measurements.
Answer:
To know and compare the difference between the density of the fresh water and salt water or sea water require a graduated cylinder, balance, and weighing machine. The graduated cylinders are the containers that have markings on them to measure the volume of the liquid.
First, fill the cylinder with 1000 ml of fresh water which is the measure of the volume. now weight the cylinder filled with the fresh water and then find the difference between filled and empty container divide the mass of the fresh water by its volume, the result is the density of fresh water.
Repeat the process with salt water or sea water. The answer would be sea water has more density than fresh water.
Crossing over occurs during meiosis and leads to changes in the chromosomes. What type of chromosomes does crossing over produce?
1. Chromosomes containing DNA from two different parental chromosomes
2. Chromosomes identical in genetic makeup to the parental chromosomes
3. Chromosomes containing more genes with non recombinant chromosomes
4. Chromosomes carrying genes from one parent
Answer:
1.
Explanation:
because the DNA is being mixed up while crossing over
Crossing over occurs during meiosis and leads to chromosomes containing DNA from two different parental chromosomes, hence option 1 is correct.
What is meiosis?New allelic combinations are created in the daughter cells as a result of the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis.
Homologous chromosomes couple along their lengths during meiosis, one from each parent. At locations known as chiasma, the chromosomes overlap.
The chromosomes split and reunite at each chiasma, exchanging part of their genes in the process. Genetic diversity comes from this recombination.
Therefore, the genetic complement in each daughter cell at the end of meiosis is best described as a haploid set of chromosomes resulting from chromosomal recombination between the parents.
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HELP ASAP
PLEASE !!!!
Why is suburban sprawl tightly linked with environmental problems caused by
transportation?
A. Commuters who live in suburbs are dependent on automobiles that emit air
pollution.
Х
B. Commuters who live in suburbs are more likely to walk and suffer from air
pollution
C. Commuters who live in suburbs are dependent on mass transit systems that
emit air pollution.
D. Commuters who live in suburbs are dependent on mass transit systems that
add to water pollution.
i tHoUgHt yOu WeRe aMeRiCaN
Answer:
i am lol
Explanation:
Answer:
I am :)
Explanation:
Explain how mitosis maintains the chromosome number
of the original cells when forming new cells.
Relation between mitosis and chromosomes:
During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells. Because this process is so critical, the steps of mitosis are carefully controlled by certain genes. As they move, they pull the one copy of each chromosome with them to opposite poles of the cell. When mitosis is not regulated correctly, health problems such as cancer can result.When a cell divides by way of mitosis, it produces two clones of itself, each with the same number of chromosomes.
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Nancy visits a local reservoir where she feeds ducks and other birds. Every time she feeds them she notices that they fight for the best pieces and some do not get any. All living things struggle to get the necessary amount of food, water, and shelter. What is the term for this struggle? * A. overproduction B. natural selection C. variation D. Competition
Answer:
D. Competition
Explanation:
Hope u guys have great day. ✌❤
Competition is defined as a biological interaction between or among the same or different organisms where organisms fight for resources. Competition explains this struggle. So, the correct option is D.
What is Competition?Competition is defined as an interaction between organisms or species in which both require a resource in limited supply that reduces the fitness of both organisms because the presence of one of the organisms will always limit the resource available to the other that reduces the quantity.
Competition is defined as a biological interaction between or among the same or different organisms where organisms fight for resources. Competition explains this struggle. Some example of competition is trees in the forest grow tall to compete for sunlight.
So, the correct option is D.
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The ? era featured the longest periods with no life forms on Earth.
A Palezoic
B. Precambrian
C. Cenozoic
D. Mesozoic
Answer:
B. Precambrian
Explanation:
“What are 3 scientific words that relate to the cell cycle?”
( question I have on an assignment )
Answer:
the cycle of growth and asexual reproduction of a cell, consisting of interphase followed in actively dividing cells by prophase, metaphase, anaphase, and telophase
Explanation:
hope this helps
After radiation exposure, a cell that cannot divide will most likely stay in which phase?
Answer:
G0 phase
Explanation:
IF the cell doesn't receive a signal to divide, then it will go into a stage called the G0 phase. Most cells are in this stage until they receive a signal to divide, and then continue the cell cycle.
match each hypothesis with how the moon formed the statement that best describes it?
Answer:
the Moon and Earth formed at the same time from the same cloud of material. 4. Colliding planetesimal Hypothesis: As per this theory a lot of small rocky objects called as planetesimals collided and combined over a large period of time to form the Moon
Explanation:
Answer:
Giant Impact Theory: The Moon was formed from the collision between Earth and another Mars sized body
Colliding planetesimal Hypothesis: The Moon was formed from collisions and combining of planetesimals
Capture Hypothesis: The Moon was locked into orbit by Earth's gravity as it was passing by it
Accretion Hypothesis: The Moon was formed from the same cloud of material as Earth
(I apologize if this is not what you meant)