Which of the following best describes meiosis?
It is carried out in all tissues that require cell replacement
It occurs only in cells in the reproductive structures of an organism
It happens in all of the tissues except the brain and spinal cord
It is the first stage of mitosis
Answers
Answer:
It occurs only in cells in the reproductive structures of organisms.
Explanation:
Meiosis only occurs in the reproductive cells, producing gametes with half of the genetic information as the parent cell.
Meiosis can be best described as the event which occurs only in the cells which are the part of reproductive structures in an organism. Thus, the correct option is B.
What is Meiosis?
Meiosis is a type of cell division which occurs in sexually reproducing organisms. It is also known as reductional division as in this division, the chromosomal number is reduced to half. This division is responsible for introducing genetic variations in a population.
Meiosis is a type of cell division which occurs in the sexually reproducing organisms. This division is responsible for reducing the number of chromosomes in the gametes or sex cells such as eggs and sperms by half. In humans, normal body cells or somatic cells are diploid in nature. These cells contain two sets of chromosomes i.e., one from each parent.
Therefore, the correct option is B.
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Related Questions
can someone pleaseeeee answer paper 7, 8, 9 at least one of them ;-;
Answers
pls helpp
If a student doesn’t understand changes of state, how would you explain it to them?
Answers
Answer: I would explain it to them by saying changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties.
Explanation:
Liquid—> water= no fixed shape because it can go everywhere if not contained.
Gas—> steam= no fixed shape because it flouts around.
write a scientific explanation about how index fossils aid geologists in determining the age of rock layers
Answers
Index fossils aid geologists because when they are looking into rock layers they see if the index fossils match to a rock layer and if they do it means they the rock layer was created at the period of time the index fossil was.
Which are ways of showing probability? Select 4 options.
50%
557
1 × 104
25%
7/8
CHOOSE 4 CHOOSE 4
Answers
Answer:
A, C, E, F
Explanation:
I got it right on Quiz!
Answer:
50%
3/4
25%
7/8
Explanation:
I just did the Unit Test
QUICK, I NEED IT NOW!!!!!!!!! 50 POINTS AND BRAINLIEST IF YOU GET IT RIGHT
What forms as a result of the wind's frictional force on water?
Responses
deep sea currents that move in a path similar to the wind currents
surface currents that move in a path similar to the wind currents
deep sea currents that move in a path opposite to the wind currents,
surface currents that move in a path opposite to the wind currents
Answers
Answer:
air or co2
Explanation:
if the wind force is going to be pushed. by air whoch cretaes an atmosphere with water
Answer:
The correct answer is - waves.
The frictional force of the winds is the force with which the winds influence a surface. The smoother a surface is the lesser the friction, and vice versa. The water is a smooth surface, so the winds frictional force is not very big on it, but it is big enough to cause the occurrence of the waves. By constantly influencing the water with their frictional force the winds manage to move and disrupt the surface of the water, with the end result being the waves. Depending on the strength of the winds and the frictional force accordingly to that the waves can be very small, only few mm in height, or can be up to several meters in height.
Explanation:
Please answer today! If you answer any rubbish and waste my points, you will be reported!! Thank you.
1.) Give 3 ways how to increase shock (static electricity).
2.) Give 3 ways how to decrease shock (static electricity).
Answers
Answer: Whenever objects hit each other, electrons can be passed to or received from the surface of another object. The number of electrons being transferred is based on the type of triboelectric material. But, with plastic bottles or trays bumping into each other on conveyor belts, static is being generated.
Detachment – when one material is being separated from another material by peeling, electrons may not able to return back to the original molecule. Adhesive tape and protective films are prevalent in generating static charges by detachment because of the larger surface areas. As an example; when the backing material is being removed from labels, the static will cause the labels to be misaligned.
Frictional – This is one of the most common reasons for generating large static forces. It is caused by two non-conductive surfaces being rubbed together. The amount of force being applied to the material as it slides back and forth will create higher static charges. It is definitely noticed when you rub a balloon on your hair. The more times that you rub the balloon against your hair, the stronger the static forces, allowing the balloon to “stick” to the wall. It is also noticed as sheets of material are stacked or running over rollers.
decrease: Install a Humidifier. The most effective way to minimize static electricity in the home is to install a humidifier.
Treat Your Rugs and Carpeting. A static charge in your rugs and carpeting can cause a shock when you walk across them.
Use Products on Clothing.
Explanation:
A class is learning about the evaporation step in the water cycle using a simple model. The model consists of a 1-L container of water. When the container is open, and it receives sunlight, the water can freely evaporate from the container. The students design an experiment using the model. In the experiment, the container will be filled and left open outside from dawn until dusk at different times of the year. The students will run the experiment only on days with clear weather. As a basis of their experiment, the students make an assumption that more water will evaporate from their model when more solar energy is present. Which of the following is a result that the students could predict in order to test their assumption?
A.
Equal amounts of the water will evaporate on summer days and winter days.
B.
Less of the water will remain in the container after one day in summer than after one day in winter.
C.
Less of the water will remain in the container after one day in winter than after one day in summer.
D.
Some of the water will evaporate on winter days but not on summer days.
Answers
Matter continuously cycles between the living and nonliving parts of an ecosystem. The flow of energy drives the cycling of matter through ecosystems.
The water, carbon, and nitrogen cycles share patterns in the flow of matter and energy through ecosystems. Describe two different patterns that can be observed in all three cycles.
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Answers
death and feeding process
Water, carbon and nitrogen cycles are biogeochemical cycles that exist in the biosphere to maintain a balance in the flow of energy and matter.
What patterns are observed in the cycles?There are three major biogeochemical cycles - water, nitrogen and carbon - that exist in nature which allow the transfer of matter and energy between the living and non-living things of the biosphere.
All the three cycles involve the exchange of gases from the plants to atmosphere to the animals or microbiota, which is again released back into the atmosphere.
Plants absorb the nitrogen, carbon and water in different forms from the environment which is then passed on.
Another similar pattern seen amongst the three is that humans release carbon, nitrogen and oxygen in various forms.
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The process in which an organism uses water, sunlight, and carbon dioxide to make food.
Question 1 options:
chlorophyll
cellular respiration
photosynthesis
stomata
Answers
explain why the meekoceras fossils are considered to be one of the youngest fossils
Answers
Answer:
because they were found the latest and one of the lesser population
Explanation:
MYTH
Tigers and Goldfish are not related.
FACT
Evidence #1
Evidence #2
Answers
Answer:
Yea
Explanation:
The relation between the tiger and the goldfish is that they are both animals that fall into the category of vertebrates. This means that both creatures have spines, and internal bone structure. This is a trait that distinguishes them from the invertebrates that have no spine and bone structure, like the octopus for example, or from the creatures that have an exoskeleton, which means they have a bone structure that is covering the body, but not inside the body itself, like the scorpions for example.
he diagram below represents a cross between two pea plants. Rr X Rr. In pea plants, the allele for round seeds (R) is dominant to the allele for oval reeds (r). In a cross between two plants above what percentage of the offspring will have round seeds?
a. 100%
b. 75%
c. 50%
d. 25%
Answers
help pretty please, will give brainliest if you have a good answer/explanation :)
Answers
Which of the following is a density independent factor
A:Lack of rainfall
B:Mate availability
C:Parasite Infestation
D:Disease transmission
Please give me the right answer it’s for an EXAM!
Answers
Answer:
A:Lack of rainfall
Explanation:
In Ecology, certain factors affect the population of species in an ecosystem. These limiting factors can either be density dependent or density independent. Based on the question, density independent limiting factors are those factors that affect population size of species irrespective of their density in an ecosystem.
The effect of density independent factors is not dependent on the size of the population, so it tends to affect process limit all populations in the ecosystem. Density independent factors are usually environmental-related e.g natural disasters, lack of rainfall as mentioned in the options.
Lack of rainfall in a particular ecosystem will affect all population species irrespective of how dense they are. Hence, it is a density independent limiting factor.
Match the labeled parts of the cell to their functions. Gives the cell its shape Stores water, waste, and food Converts energy from the sun to chemical energy Packages and distributes proteins
please hurry!!
Answers
Answer:
gives cell shape - d
distributes proteins- c
converts energy - b
stores water, waste, and food - a
Explanation:
Match the labeled parts of the cell to their functions.
Gives the cell its shape:
✔ D
Stores water, waste, and food:
✔ A
Converts energy from the sun to chemical energy:
✔ B
Packages and distributes proteins:
✔ C
The heart contracts twice for every heartbeat one contraction is the atrial contraction while the other is the venture true or false
Answers
Answer:
True. The heart contracts twice per heartbeat. One contraction is the ventricular and the other one is the artrial.
What is a public agenda?
A. issues that the people organize to solve themselves
B. issues the government deems important that they will address
C. issues of little importance to the general population that need no addressing
D. issues important to the population that people want addressed by the government
Answers
Examine the layers of rock. Identify and explain which layer contains the oldest fossils.
Answers
Answer:
The oldest fossils would be D.
Explanation:
The reason the very bottom layer has the oldest fossils is because each time a layer is added the top layer is the youngest.
Answer: D
Explanation:
The lower you go through layers of rocks, the older the fossil is.
I'LL GIVE BRAINLIEST:
Is it B?
Answers
Answer:
YES
Explanation:
YES
Temperature can affect density in certain ways. If the temperature decreases, what effect can that have on the density of a substance?
Answers
Liquid water at 25 deg is so rapidly breaking bonds between H2O units and reforming them that extra water molecules get trapped inside the water lattice. This is the reason why liquid water is more dense than solid water.
The bonds in water break more slowly as temperature decreases and the structure tend to trap fewer extra water molecules. At low temperature, more of the water has the same lattice as ice.
Wikipedia, Water Density
It is possible to have liquid water at temperatures well below 0 deg C. Molecules in this supercooled water are free to move. Bonds are made and broken. The long range structure is not perfect but the short range structure of supercooled water is very much like ice. Adding a crystal to supercooled water causes instantaneous ice formation.
Explanation: :P
The science club at Tracy's school is researching how temperature affects fish reproduction. They conducted a study to find out if raising the water temperature would decrease the number of bass eggs that hatched.
They gathered bass eggs from a local lake. Half of the aquariums were kept at room temerpature, and the other half were placed in a sunny window.
What is the independent (test) variable from this experiment?
The size of the lake.
The number of bass eggs that hatch.
The temperature of the water.
The number of aquariums.
Answers
Answer:
The temperature of the water.
Explanation:
The independent variable is the thing you are changing in order to observe an outcome. The dependent variable is the outcome (the number of bass eggs that hatch).
Which of the following adaptations would help a tree-dwelling nocturnal scavenger survive in its environment?
Light-colored fur
Heels with fur
Night vision
Short snout
Answers
Find the hot spot on the map. This represents one of the volcanoes of Hawaii, which gets its fuel because the island sits over a hot spot. Hot spots occurs at abnormally hot centers known as mantle plumes. Scientific models depict these plumes of molten rock almost like a lava lamp, with a rising bulbous head fed by a long, narrow tail that originates in the mantle. This type of volcanism, hot spot volcanism, is unique. Why?
A The hot spot volcanoes rarely result in mountain building; they are a destructive process.The hot spot volcanoes rarely result in mountain building; they are a destructive process.
B It does not occur at plate boundaries where most all other volcanism occurs.It does not occur at plate boundaries where most all other volcanism occurs.
C It occurs where two tectonic plates converge and is usually the site of mountain building.It occurs where two tectonic plates converge and is usually the site of mountain building.
D The resulting volcanoes always produce islands.
Answers
Answer:
A: The hot spot volcanoes rarely result in mountain building; they are a destructive process.The hot spot volcanoes rarely result in mountain building; they are a destructive process.
List the steps of translation starting with the first step
- mRNA brings the coded message from the nucleus to the ribosome
- tRNA carries amino acids to the ribosome
- The tRNA separates from the amino acid
- rRNA helps form the bonds between the amino acids
Answers
Answer:
DNA is in every living thing. In the process of transcription, mRNA reads the split DNA. Codon transfers the genetic information from the nucleus of DNA to the mRNA. The mRNA, in turn, is transformed into an amino acid sequence, via translation. This process uses an adapter called transfer RNA (tRNA), which creates the protein according to a triplet base coding system. Anticodons carry amino acid in its tRNA structure.
Explanation:
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where did the name '' hamster'' probably come from?
A. The animal was discovered by a person named Hamm.
B. People thought the animals looked like little hams.
C. It comes from a word meaning ''tiny''.
D. It comes from a word meaning ''to hoard''.
Answers
Answer:European Hamster
Smallest breed
Roborovski hamster
Stout-bodied rodents,
with tails shorter than body length, and have small, furry ears, short, stocky legs, and wide feet.
en.wikipedia.org
Popular breed
Golden hamster
They carry food in their spacious cheek pouches to their underground storage chambers. When full, the cheeks can make their heads double, or even triple in size.
en.wikipedia.org
Explanation:
Which trophic level is always a necessity in an energy pyramid or food chain?
a) primary consumer
b) producer
c) tertiary consumer
d) secondary consumer
I NEED THIS IN 5 MINUTES!!!!
Answers
Answer: primary
Explanation: there is alowayss a primary consumer
Which is one type of evidence that geologists usually study?
A. location of Earth in outer space
B. waves that move through Earth
C. interactions between living things on Earth
D. diversity of life found on Earth
Answers
Answer:
B
Explanation:
Geologists main types of evidence are rocks and rock samples as well as seismic waves.
HELP FAST CORRECT ANSWERS ONLY
Rock debris from space called ____enter Earth and are called _____. If they survive this fall and land on Earth, they are called ______.
Answers
HELPMEH 20 PTS reeeeeeeeeeA purple (Pp) flower crosses with a white (pp) flower. Use a Punnett square. What is the probability of producing a white flower offspring? Explain.
Answers
Answer: 50%
Explanation:
I got 50% because the purple and white is a 50/50 chance. Meaning that the white is 50% and the purple would be a 50%.
The large P is Horizontal and all the small p are on the top. The large P is dominant, while small p is not. If there were 2 big P then all flower crosses would be purple.
What are some examples of suitable environments for bacteria?
How might bacteria avoid dying if an environment is not suitable?
How are bacterial cells different from plant and animal cells?
Describe how bacteria reproduce. How can bacteria acquire new characteristics?
Answers
Answer:
bacteria are found everywhere even in hot springs. Bacteria are different from other organisms because they don't have membranes bound organelles .they replicates to produce
Explanation:
Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. There are exceptions, however some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.
How might bacteria avoid dying if an environment is not suitable?Many types of bacteria, if environmental conditions become unfavourable (lack of water, increase in temperature, etc), will go into a sort of dormant state, called an Endospore.
How are bacterial cells different from plant and animal cells?Because bacteria are prokaryotic, they do not have a nucleus and no membrane-bound organelles. In contrast, plants and animals are made up of eukaryotic cells, which means they have a nucleus and membrane-bound organelles like mitochondria or Golgi apparatus.
Describe how bacteria reproduce. How can bacteria acquire new characteristics?Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells. The two daughter cells are identical to the parent cell.
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Mark BRAINLIEST