Answer:
During this stage, homologous chromosomes line up on the metaphase plate and exchange genetic information.
Explanation:
Crossing over occurs when chromosomal homologs exchange information during metaphase of Meiosis I. During this stage, homologous chromosomes line up on the metaphase plate and exchange genetic information.
The exchange of genetic information takes place during meiosis, particularly during the prophase, resulting in organism diversification and natural selection, and sexual reproduction is the cause of the diversification.
What is the significance of the genetic exchange?During meiosis, homologous chromosomes, which are identical versions of a chromosome, pair up and exchange genetic information through a process called crossing over, and due to this, new combinations of genetic information are seen in the offspring cells. The exchange of genetic information leads to speciation, the introduction of genes into the gene pool, etc.
Hence, the exchange of genetic information takes place during meiosis, particularly during the prophase, resulting in organism diversification and natural selection, and sexual reproduction is the cause of the diversification.
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What structure can be found in both a virus and a cell?
I’ll make you brainiest
Answer:
I think it's nucleic acid....
Explanation:
The _______ is responsible for maintaining homeostasis within any cell
Answer: Cell Membrane
Answer:
cell membrane
Explanation:
The structure most responsible for maintaining cell homeostasis is the cell membrane.
Why would you answer your own question lol
Plants and animals must have the element nitrogen because it is an important
component of nucleic acids and proteins.
How do these organisms obtain nitrogen?
A
Plants and animals get nitrogen directly from the air the same as
they do oxygen.
B
Bacteria get nitrogen from the air, and plants and animals get
nitrogen by eating the bacteria.
C
Nitrogen fixing bacteria convert nitrogen from the air into ammonia,
and animals ingest the ammonia.
D
Bacteria in the soil convert nitrogen from the air into a form that
plants can use, and animals get nitrogen by eating the plants.
Answer:
nitrogen fixing bacteria
these organisms obtain nitrogen, Nitrogen fixing bacteria convert nitrogen from the air into ammonia and animals ingest the ammonia.
what are the role of nitrogen fixing bacteria ?
Nitrogen fixation occur by a bacteria called nitrogen fixing bacteria during nitrogen cycle.
nitrogen-fixing bacteria are the microorganisms that provide plants with the vital nutrients and it can't be obtained from the atmosphere (air).
nitrogen-fixing bacteria are responsible for the conversion of atmospheric nitrogen to ammonia during nitrogen cycle can be taken up by plants.
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define terrestrial planets:
please help i need to submit it soon
Answer:
The planets like Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma.
Individuals that are well adapted to their environment will survive and produce
a. fewer mutations.
b. more offspring.
c. stronger genes.
d. better traits.
The Individuals that are well adapted to their environment will survive and produce : (B). more offspring.
Meaning of environmental adaptationAn environment is simply defined as the physical surrounding and condition individual or specie is subject to. It includes both living things and non living things.
Environmental adaptation is the ability possessed by an organisms to get used to an environment, that is he is not affected by the environmental factors but can live with it and still function optimally.
In Conclusion, The Individuals that are well adapted to their environment will survive and produces more offspring.
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what is the state of a object when not have net force
Write names (3 letters) of the amino acids according to the following code:
AUG-GUU-AGG-CCA-UAU-UGA
Answer:
MET-VAL-ARG-PRO-TYR
And UGA is stop
Explanation:
I study it in Swedish but i do not know if it is the same thing in English as well .
⚠️HELPPSPSPAP I wanna finish. ⚠️⚠️
Salad dressing is a(n)
A. Compound
B. Element
C. Heterogenous
D. Homogenous
Answer:
if there is two then it would be either c or d
Explanation:
Give an example of radiation.
Answer:
A burning candle.
Explanation:
Gives off heat and light radiation.
Answer:
Electromagnetic waves through the microwave.
Explanation:
SOMEONE PLEASE HELP ME WITH THIS PLEASE PLEASE PLEASEE!!!!!!!!!!
Answer:
C is the answer for the question
surface soil is good for plants ,why
Answer:
because it contains something in it that's why ok.
Explanation:
..........
Answer:Soils' properties vary with the soil depth. The surface soil, or topsoil layer (O and A horizon in Figure 1–2), usually contains less clay, but more organic matter and air, than the lower soil layers. Topsoil is usually more fertile than the other layers and has the greatest concentration of plant roots.
Explanation:
For a commercial application using an enzyme, the progress of the
enzyme-catalysed reaction needs to be studied.Which structures will be present in a cell that causes cholera?
which of the following is an example of an abiotic limiting factor on population size
a)water availability
b) predation
c)disease
d)availability of food
Answer:
It is A
Explanation:
A
lohmann, k. j. et al. regional magnetic fields as navigational markers for sea turtles. science 294, 364–366
The discussion of lohmann, k. j. et al. regional magnetic fields as navigational markers for sea turtles science 294, 364–366 is given in below paragraph-
Young loggerhead sea turtles (Caretta caretta) migrate across the North Atlantic Ocean from eastern Florida before making their way back to the North American coast. Here, we report that hatchling loggerhead turtles responded to magnetic fields by swimming in directions that would, in each case, help keep the turtles within the North Atlantic gyre currents and facilitate movement along the migratory pathway. These magnetic fields simulated those found in three widely separated oceanic regions. These findings suggest that juvenile loggerhead turtles have a navigational system whereby local magnetic fields serve as navigational markers and trigger changes in swimming direction at significant geographic borders.
What are magnetic fields?An electric charge, an electric current, and magnetic materials are all affected magnetically by a magnetic field, which is a vector field. A force perpendicular to the magnetic field and its own velocity acts on a moving charge in a magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets and pulls on ferromagnetic materials like iron. A magnetic field that changes depending on the location will also exert a force on a variety of non-magnetic materials by influencing the mobility of their outer atomic electrons. By using electric currents, like those found in electromagnets, and by altering the electric fields over time, magnetic fields are produced that surround magnetized things.
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State that ecosystems have the potential to be sustainable over long periods of time.
Answer:
Ecosystems have the potential to be sustainable over long periods of time. Something is sustainable if it can continue indefinitely depending on nothing but itself. The concept has become increasingly well-known as it has become evident that current human uses of resources, mostly fossil fuels, are unsustainable.
Explanation:
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A region where the flora, fauna and microorganisms together with the abiotic factors live together is called an ecosystem.
The ecosystem has a flow of energy and nutrients. Ecosystems have the potential to sustain over a longer duration.
Sustainability is a source or resources that can be used indefinitely without compromising future needs.
The nutrient cycle of the ecosystem can be recycled but the energy flow of the system cannot be.
If the particular ecosystem can maintain its function and structure over some time will be sustainable.
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CHAPTER 14
4. A population’s growth rate is the ____________ rate minus the _____________ rate.
5. When a cause of death is density _____________________, a certain proportion of a population dies regardless of the population’s density.
6. A close relationship between two species in which each species provides a benefit to the other is called ______________________.
Write a lab report for this lesson’s lab. Be sure that your report:
includes all major elements of a lab report.
meets your teacher’s content and format expectations.
is clearly organized and formatted.
demonstrates strong scientific reasoning and writing.
While writing, you can revisit previous parts of the lesson by returning to the course map. Be sure to refer to the
lab’s student guide, which you can find on the first page of the lab experiment activity. You may also find it
helpful to refer to the remaining pages of this guide, which provide general guidelines for writing lab reports.
Here is the example of Lab Report: Photosynthesis which has all the points.
Aim of experiment - What is the aim of this lab? What query is it looking to solution, or what hassle is it looking to explain? Write your solution below.HypothesisAfter studying the lab instructions - however earlier than beginning the lab - report your best "knowledgeable guess" approximately what is going to manifest withinside the experiment. Give your motives and description any assumptions that lead you to this hypothesis. Write your solution below.Experimental DesignMaterial used on this lab, and a short rationalization of the strategies you followed. (You do now no longer want to retype the procedure; really summarize your strategies). Add #'s wherein necessary.Procedure (listing steps withinside the order in that you carried out them)Record the facts you accumulated withinside the lab. Answer all the questions below.Experiment 1 Data and Observations: 1. Record the preliminary pH fee of the water withinside the beaker:Record the pH fee of the water withinside the beaker at:Record the conduct of the sparkling splinter after its located withinside the take a look at tube.Note the result.What is lab report ?Lab reviews are written to explain and examine a laboratory test that explores a systematic concept. They are normally assigned to allow you to: Conduct clinical research. Formulate a hypothesis/hypotheses approximately a specific stimulus, event, and/or behaviour.
Thus it is well explained.
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byers dl. evolution in heterogeneous environments and the potential of maintenance of genetic variation in traits of adaptive significance. genetica. 123: 107-24. pmid 15881684 doi: 10.1007/s10709-003-2721-5
One of the primary problems in evolutionary biology has been how to maintain genetic diversity in qualities that are important for adaptation. Selection in diverse environments has been proposed as a means of facilitating the maintenance of genetic variation, taking into account the pattern of increasing genetic variation linked with environmental clines and heterogeneous habitats.
What is Genetic variation ?Genetic variation is the variance in DNA sequences among members of a population. Germ cells, such as sperm and eggs, as well as somatic (all other) cells, are prone to variation.
Examples of genetic variants that can exist in a human population include skin colour, hair colour, dimples, freckles, and blood type. The altered leaves of carnivorous plants and the evolution of flowers that resemble insects to entice pollinators are two examples of genetic variation in plants.Learn more about Genetic variation here:
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Some cells have multiple dendrites and/or axons. What advantages does this have for the nervous tissue?
Answer:
It receives information from several cells.
Explanation:
The main advantage of cells having multiple dendrites and/or axons is that it receives information from several cells as compared to those cells which have one dendrite and receive information from only one cell. If neurons have hundreds or thousands of dendrites, so these dendrites allow the cell to receive information from thousands of other cells. So we can say that dendrites number plays a key role in nervous tissue.
the__method would be the best way to determine when an approaching thunderstorm will reach your town.
a. analog b. trends c. climatology d. persistence
HELPPPPPP
B:Trend
definetly didnt answer this question before *cough cough*
Answer:
Trends
Explanation:
what is the name of the instrument that separates the colors of two-colored gem minerals?
Answer: Dichroscope
Explanation:
Dichro - of a crystal) showing different colors when viewed from different directions, or (more generally) having different absorption coefficients for light polarized in different directions.
Two students are studying for a Science Test. On the table they had a glass of water and identical cell phones (Cell Phone A & Cell Phone B). Both of their phones had run out of battery, therefore they were both charging in the same wall outlet. Cell Phone A had a charging cord that was 3ft & Cell Phone B had a charging cord that was 9ft. Cell phone B, which was closest to the glass, vibrated while ringing and knocked over the half-full glass of water. *
Captionless Image
click here - just because we needed to make a question to post the scenario.
Part A: Identify the energy transformations that occur from the outlet charger to the ringing phone. *
Chemical energy transformations take place from the outlet charger to the ringing phone.
Part B: Explain how the Law of Conservation of Energy applies to the energy transformations that occur from the outlet charger to the ringing phone. *
This is a required question
Part C: Explain what we would see if the pencil is placed in the glass of water. What is causing the pencil to look this way? *
Part D: Predict which of the phones charged the fastest using Ohm’s Law. Justify your theory using Ohm’s Law. *
This is a required question
Part E: Argue that the amount of water in the glass affects whether it fell over or not. The glass that fell over on the student’s table was only half full. Answer using 1st & 2nd Law of Motion to support your claim. *
Answer:
I know C if u can give me A
Explanation:
Answer: im taking this right now
Explanation: can you give me the answers bc ion kno any
Why do the blood vessels going to the skin and internal digestive organs constrict and get smaller during a fight-or-flight response?
a to let in more light
b to allow the body to take in more oxygen
c to redirect blood to the areas that are involved in the panic response
d to increase blood flow
Answer:
Theres the answer.
Explanation:
The sympathetic division can be thought of in a general way as helping the body to mount a “fight or flight” response, with an overall increase in heart rate and blood pressure. Pressure increases because blood vessels constrict under sympathetic stimulation.
someone helppppp which one is it
Answer:
The orange box
Explanation:
It is the most reasonable for the plant base orginism
why are casts, molds, and trace fossils so common?
Answer:
Cast fossils occur when mold fossils are filled in with minerals that harden over time, creating a fossilized replica of the original organism. Water seeps through the rock surrounding the mold fossil, leaving behind minerals which fill the mold. Any mold fossil can potentially form a cast mold.
Explanation:
Answer:
Cast fossils occur when mold fossils are filled in with minerals that harden over time, creating a fossilized replica of the original organism. Water seeps through the rock surrounding the mold fossil, leaving behind minerals which fill the mold. ... Any mold fossil can potentially form a cast mold
Explanation:
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food dropped on a microbe-laden hard surface, such as a floor, becomes contaminated the moment it lands
The statement "food dropped on a microbe-laden hard surface, such as a floor, becomes contaminated the moment it lands" is true. Here Microbiological contamination is detected.
Microbiological contamination refers to the non-intended or accidental introduction of infectious material like bacteria, yeast, mold, fungi, virus, prions, protozoa or their toxins and by-products.
Foods that won't be cooked, including as salads, fresh fruit, as well as vegetables, or prepared foods, shouldn't be placed over raw meat, poultry, as well as fish. Keep them near the bottom of the cooler or your refrigerator so that their juices won't drip onto other foods.
The question is incomplete, the complete question is:
food dropped on a microbe-laden hard surface, such as a floor, becomes contaminated the moment it lands.
(a) True
(b) False
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how do enzymes play a factor into cellular respiration and photosynthesis? Name 2 instances where you use enzyme was inhibited/ plugged?
Answer: Enzymes are proteins that catalyze, or affect the rate, of chemical reactions without themselves being altered in the process. Specific enzymes catalyze each cellular reaction. The main role of enzymes during the respiration reaction is to assist in transferring electrons from one molecule to another.
There are two types of inhibitors; competitive and noncompetitive inhibitors. Competitive inhibitors bind to the active site of the enzyme and prevent substrate from binding.
Explanation:
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This process results in DNA being duplicated
Transcription
Translation
DNA Replication
A and B
Answer:
DNA Replication
Explanation:
A biology teacher placed a chicken egg in vinegar to dissolve the shell exposing the cell membrane. the teacher then placed the egg in a solution of sodium chloride in water in order to demonstrate cellular transport what type of cellular transport is the teacher demonstrating?
A. facilitated diffusion
B. active transport
C. filtration
D. Osmosis
I would assume osmosis, as sodium chloride is just salt and salt travels to water, which is abundant in the egg.
Option D. osmosis is the cellular transport is the teacher demonstrating in the given case.
Osmosis is the flow of water through a semi-permeable membrane from an area of higher water concentration to an area of lower water concentration. When the egg was placed in a solution of vinegar,
vinegar reacts with the eggshell, bubbles surround the egg and dissolve the shell.It is known vinegar is a weak acid diluted with lots of waterWater moves from the vinegar, through the egg’s semi-permeable membrane, into the egg due to osmosis.When the egg was placed in the salt solution that had a higher concentration of water than was inside the egg,
water moves into the egg.The egg will become larger when placed in the salt solution due to the solution’s low salt concentration and sinks in the solution.Thus, the correct answer is - option D. osmosis.
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Paramecium A paramecium is a unicellular, eukaryotic organism. Which statement best describes a function of ATP in a paramecium? O ATP provides the energy to move cilia. 0 ATP signals the presence of other nearby organisms, O ATP senses changes in the surrounding aquatic environment.