Answer:
Some cells are different shapes as they have different ways of attempting to pass through the immune system they are different sizes as some of them want to make sure that the white blood cells cannot swallow them as easily at that point antitoxins are released to break them down
Explanation:
Fossil fuels______be reused or replaced.
Answer:
Fossil fuels can't be reused or replaced.
Explanation:
Habitat destruction causes issues for many different species because it gives them a smaller area to move around to look for food, shelter, or other resources. Which of the
following would be a possible solution to this problem?
A. Connecting the forests together to allow animals to move between the forests
B. Killing all of the animals
C. Constructing a large wall around the city so the animals and humans are separated
D. Moving all of the animals to one forest away from cities
Answer:
A
Explanation:
Cause the only way to let them be free is for them to connect to the forests. (please don't kill me if I'm wrong-)
In meiosis, 2 cells have been created at the end of telophase 1, halfway through the process. These cells are said to exist in a haploid state with a diploid number. Explain the statement. Support your answer clearly
Answer:
In some species, cells enter a brief interphase, or interkinesis, before entering meiosis II. Interkinesis lacks an S phase, so chromosomes are not duplicated. The two cells produced in meiosis I go through the events of meiosis II in synchrony. During meiosis II, the sister chromatids within the two daughter cells separate, forming four new haploid gametes. The mechanics of meiosis II is similar to mitosis, except that each dividing cell has only one set of homologous chromosomes. Therefore, each cell has half the number of sister chromatids to separate out as a diploid cell undergoing mitosis.
Prophase II
If the chromosomes decondensed in telophase I, they condense again. If nuclear envelopes were formed, they fragment into vesicles. The centrosomes that were duplicated during interkinesis move away from each other toward opposite poles, and new spindles are formed.
Prometaphase II
The nuclear envelopes are completely broken down, and the spindle is fully formed. Each sister chromatid forms an individual kinetochore that attaches to microtubules from opposite poles.
Metaphase II
The sister chromatids are maximally condensed and aligned at the equator of the cell.
Anaphase II
The sister chromatids are pulled apart by the kinetochore microtubules and move toward opposite poles. Non-kinetochore microtubules elongate the cell.

Figure 1. The process of chromosome alignment differs between meiosis I and meiosis II. In prometaphase I, microtubules attach to the fused kinetochores of homologous chromosomes, and the homologous chromosomes are arranged at the midpoint of the cell in metaphase I. In anaphase I, the homologous chromosomes are separated. In prometaphase II, microtubules attach to the kinetochores of sister chromatids, and the sister chromatids are arranged at the midpoint of the cells in metaphase II. In anaphase II, the sister chromatids are separated.
Telophase II and Cytokinesis
The chromosomes arrive at opposite poles and begin to decondense. Nuclear envelopes form around the chromosomes. Cytokinesis separates the two cells into four unique haploid cells. At this point, the newly formed nuclei are both haploid. The cells produced are genetically unique because of the random assortment of paternal and maternal homologs and because of the recombining of maternal and paternal segments of chromosomes (with their sets of genes) that occurs during crossover. The entire process of meiosis is outlined in Figure 2.

Figure 2. An animal cell with a diploid number of four (2n = 4) proceeds through the stages of meiosis to form four haploid daughter cells.
Choose all that apply for Grasslands
Question 3 options:
no trees and shrubs
Contains grasses and woody plants
rainfall is low
occur in all climatic zones
Choose all that apply for Savanna
Question 4 options:
rainfall is moderate
occur in sub tropical and warm zone
scattered trees and shrubs
contains only coarse grass
How does a fire help grasslands?
Choose all that apply
Question 7 options:
keeps trees from overtaking the grasses
all of the choices
preserve biodiversity
helps contain only coarse grass
What type of grasslands are found in the United States?
Question 9 options:
plains and prairies
steppes
velds
pampas
PLEASE HELP ME!!!
Answer:
number 4
A,B,C
number 3
A,
Grasslands have no trees and shrubs, contains grasses and woody plants, and rainfall is low.
What do you mean by Grasslands?Grasslands may be defined as area in which the vegetation is dominated by a nearly continuous cover of grasses.
Savannah is a type of grasslands where there is moderate rainfall that contains scattered trees and shrubs.Fire helps grasslands by preserving biodiversity. The type of grasslands found in the United States is plains and prairies.
Therefore, all the questions are discussed above one by one.
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Why do your mitochondria come from your mom?
Answer:
the mitochondria in mammalian sperm are usually destroyed by the egg cell after fertilization.
Explanation:
If the amount of atmospheric carbon dioxide were decreased, what would be the most direct effect on the ecosystem?
A. Decomposers would decrease in number
B. Some consumers would become photosynthetic
C. Producers would have less material for making food
D. Consumers and producers would increase the rate of respiration
Answer:
C. Producers would have less material for making food.
Explanation:
An ecosystem can be defined as the natural living habitats of both living and non-living organisms, in which they interact with one another. Essential services such as plant pollination, water purification, nutrient cycling etc that are being provided by the ecosystem are really very vital, important and useful for the sustenance of life, both for humans and enhances social welfare.
A list of the types of organisms in an eco pyramid are;
I. Producers: these are autotrophs or self-feeders such as plants.
II. Primary consumers: these are herbivores that typically feed on plants such as a goat or deer.
III. Secondary consumers: these consists of carnivores that typically feed or eat flesh such as lion, tiger, cheetah, etc.
IV. Tertiary consumers: these are higher predators such as humans that aren't normally fed on by other organisms in the ecosystem.
In Biology, producers are the living organisms that are capable of manufacturing their own food and as such can provide energy or food for the other living organisms (consumers) in a food chain. Thus, producers are mainly known as the foundation of a food chain and are at the top.
A producer gets energy from the sun and converts it into food. The cells found in producers are capable of converting the energy received directly from the sun into food through a process generally referred to as photosynthesis, converting carbon dioxide from the air, water from the soil, minerals and energy from the sun into organic nutrients.
Hence, if the amount of atmospheric carbon dioxide were decreased, the most direct effect on the ecosystem is that producers would have less material for making food.
i have a question for science.
question: why are most cells so small?
( what keeps them from growing so large)
Answer:
Cells are small so that material can cross the cell membrane fast enough. When a cell grows too large it will divide into smaller cells so cell division keeps cells from growing too large.
What can occur nitrogenous bases do not pair correctly?
Answer:
Incorrectly paired nucleotides cause deformities in the secondary structure of the final dna molecule.
Explanation:
What ecological process would be responsible for transforming this landscape?
A. primary succession
B. cyclical succession
C. seasonal succession
D. secondary succession
Do any varieties of cyanobacteria living today produce stromatolites?
A: Yes
B: No
Answer: yes
Explanation:
Stromatolites, also known as layered rocks, form in shallow waters when biofilms of living microorganisms, like cyanobacteria, trap sediment. Most stromatolites grow in extremely salty lagoons or bays, in places like Australia, Brazil, Mexico and the Bahamas.May 30, 2013
_____ feed on dead matter, causing it to decay while _____feed on already decaying matter.
Answer:detritirove
Explanation:decomposer
Cheests as a species of cat best known for being the fastest land animal, with the ability to sprint at speeds of up to 120
Kilometers per hour, Cheetahs have small heads, lean bodies, long legs, and a yellowish-tan coat with distinctive black spots
Cheetahs face extinction pressure from climate change, hunting by humans, and habitat destruction, which is reducing the size of
their populations, Predict how these pressures have affected the genetic diversity of cheetahs.
Answer:
Genetic diversity has decreased due to inbreeding due to dwindling population size.
Cheetahs are facing great pressures, such as climate change, destruction of their habitat, and also hunting by humans that have greatly impacted their genetic diversity.
What are the causes of inbreeding in Cheetahs?Cheetahs have experienced a very declining rate of their populations due to destruction of their habitat, and also hunting by humans that has resulted in inbreeding in their populations and loss of genetic diversity.
Due to inbreeding, cheetahs have become more exposed to genetic disorders and vulnerable to diseases, and other threats.
Climate change has also posed a great threat to the declining population of cheetahs as it has affected their habitats and food resources. Climate change causes alteration in the temperature and rainfall pattern resulting in low availability of prey and water resources. Therefore, climate change leads to the malnutrition of cheetahs and making them more susceptible to severe disease.
Therefore, cheetahs are facing extinction due to climate change, habitat destruction, and hunting by humans.
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20 points picture shown! only real answers pretty please
The picture below shows the satellite image of ocean surfaces on Earth at Locations A, B, C, and D.
Which of these graphs best models the waves in the four locations?
When using images and graphs to express the results of a research, both of them should express the same information to make their interpretation easier. Option A is the one that best models the waves in the four locations.
How to express the results of a research?
There are different ways in which a researcher can correctly express the results of an experiment or research. It can be done by using images, tables, graphs, diagrams, etcetera.
Usually, combinations of one or more are used to express the same results in order to make it easier to make interpretations (for instance, tables and charts). In these cases, the same data must be expressed in all of them, so the interpretation is coherent.
In any case, there must always be a reference to what is being shown, so the persons looking at the image, chart, or table, get to know what they are looking at.
For instance, in the exposed example we can see the satellite image of ocean surfaces on Earth at different locations.
To get to understand this image by itself, we need references. These are given below in the sea surface height anomaly gradient.
This gradient explains the change in height from the lowest height -the darkest color that reflects -50 cm-, to the highest height -white expresses 50 cm-.
Letters A, B, C, and D are references to the locations that were considered.
If we want to make a graph with this same information, we need to make a good interpretation of the image and then reflect it in the graph.
In the exposed example, graph A is the one that best reflects the information provided in the image but is not entirely correct.
Image
A ⇒ red color ⇒ 30 cmB ⇒ yellow color ⇒ 10 cm C ⇒ cream/light blue ⇒ 0 cmD ⇒ light blue color ⇒ -10 cm
The graph must express the change in water surface height. This change is expressed in the Y ax of the chart.
Probably the X ax represents normal heights.
According to the information,
A and B must be over the X ax (positive values). C might be on the ax or slightly over or below it. Finally, D must be below the X ax (negative value).
Graph A is the one that best represents this information.
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list four characteristics of living organisms and explain one
sensitivity or response to the environment
reproduction
growth and development
regulation
homeostasis
and energy processing
Explain one: living organisms reproduction. Living thing can reproduce without receiving any cells from another living thing.
Hope this helped. o(*￣︶￣*)o
PLSSSS HELP!!! 25 POINTS + BRAINLY
Answer:
#3
Explanation:
The nucleotide insertion changes the reading frame, causing all kinds of problems. Almost none of the codons will code for the same amino acid.
If the concentration of water inside the cell is equal to the concentration of water outside the cell, the cell is at ____________________ with its environment.
when you see _____ clouds it means the weather might be changing soon.
A.cumulus
B.cirrus
C.stratus
D.cumulonimbus
Answer:
the answer is when you see cirrus clouds...
Can someone plz help me on this science its due today and STAAR test is next week
Answer:
answer is c
Explanation:
hope it helps!!!
Question 24 (6 points)
✓ Saved
Within a forest and stream ecosystem, there is a food web that includes grasses,
rabbits, grasshoppers, foxes, and snakes. Answer the following questions for 2
points each:
1. Identify TWO density-dependent limiting factors that could affect the rabbit
population.
2. Explain how a shortage of ONE of the limiting factors would impact both a large
population of rabbits and a small population of rabbits.
3. Identify ONE other organism for which the rabbits would be a limiting factor and
explain how the original limiting factor in question 2 would affect the second
organism.
Answer: Question 24 (6 points) ✓ Saved Within a forest and stream ecosystem, there is a food web that includes grasses, rabbits, grasshoppers, foxes, and snakes. Answer the following questions for 2 points each: 1. Identify TWO density-dependent limiting factors that could affect the rabbit population. 2. Explain ...
Explanation:
a food web that includes grasses, rabbits, grasshoppers, foxes, and snakes. Answer the following questions for 2 points each: 1. Identify TWO density-dependent limiting factors that could affect the rabbit population. 2. Explain ...
Birds of a species have different sized and shaped beaks. What is this an example of? survival of fit individuals variation overproduction
Answer:
I did this question for a science quiz and the answer is variation trust me I doubled checked on my quiz.
Explanation
Birds of a species have different sized and shaped beaks. What is this an example of variation as it is the cause of natural selection.
What gene is responsible for the shaped beaks?The maximum genetic variant withinside the ALX1 gene is related to variant in beak form now no longer simplest among species of Darwin's finches however additionally amongst people of certainly considered one among them, the medium floor finch.
Now, researchers have nailed the genetics at the back of those iconic beak shapes. When the crew sequenced the genomes of one hundred twenty character birds, it determined a gene, ALX1, that varies among species with big or small, pointy beaks.
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What is the purpose of being best "fit" for a particular environment
Answer:
The adequacy of this fit between a person and the environment can affect the person's motivation, behavior, and overall mental and physical health163; that is, if the fit is optimal, the individual's functioning may be facilitated; if it is unsuitable, the individual may experience maladaptation.
Explanation:
why is the study of fish and fish farming important in the study of animal science?
Answer:
Such physiological research will offer a wealth of information that can help in fish survival and management. This include how fish respond to and withstand a variety of environmental factors, as well as how fish bodies and internal processes evolve over time (including smoltification and reproduction).
Fish are more effective at converting feed into body protein than cattle or chickens. It's a lot more economical, which means the fish industries can produce more food with less feed. Since less food and resources are used in the processing of food, the process is therefore less expensive.
Explanation:
- Eijiro <3
The study of fish and fish farming is important in the study of animal science in various aspects. Some of them are given below:
Fish is a rich source of protein.High economic value.Better productivity.Less expensive. What do you mean by Fish farming?Fish farming may be defined as a form of aquaculture in which fish are raised in enclosures to be sold as food.
Fish is an organism that is known as the king of aquatic habitats. Being this property the study of fish and fish farming leads to more advancement in its gene sequence, amount of protein content, and even a rough amount of its cost. On the other hand, it is also a chief source of food that contains significant protein.
Therefore, the study of fish and fish farming is important in the study of animal science in various aspects.
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1. What type of mutation is this?
Original Strand: UAG
Mutated strand: UUG
Highlight your answer:
A. Base (Point) Substitution
B. Deletion
C. Insertion
Answer:
a
Explanation:
Before the glucose food can be used by a cell, it must first be transferred into an usable form of energy known as
A. DNA.
B. Proteins.
C. ATP.
Answer:
ATP. .......... .........
echidnas hatch from an egg and delicious as they mature m. Why do the echidnas have bristles with different thicknesses?
RNA interference is a mechanism of eukaryotic gene regulation. In this mechanism, the enzyme "dicer" cuts dsRNA into smaller fragments called , which form a complex with RISC and degrade specific .
RNA interference is a mechanism of eukaryotic gene regulation. In this mechanism, the enzyme “dicer” cuts dsRNA into smaller fragments called siRNA, which form a complex with RISC and degrade specific RNA.
siRNA or small interfering RNA as a part of RISC complex finds and binds to complementary mRNA and it induces the cleavage of mRNA. This causes degradation of that mRNA. This is the way RNA interference prevents translation.
Answer:
RNA interference is a mechanism of eukaryotic gene regulation. In this mechanism, the enzyme "dicer" cuts dsRNA into smaller fragments called ( small interfering RNA (siRNA) ) which form a complex with RISC and degrade specific ( mRNA)
Explanation:
:)
A student is studying calcium, a highly reactive element that humans need for strong bones. Which characteristic of calcium is most closely related to its chemical reactivity?
Explanation:
it's very reactive which helps to make strong bones
Almost all of the energy that sustains an ecosystem comes from which energy source that is also the
start of each food chain?
ocean
wind
fossil fuels
sun
NO LINKS I WILL REPORT
what are compulsory vaccinations?
Answer:
compulsory Vaccination is the health policy a government adopts in relation to vaccination .
The illustration shows bones in four animals. The bones labeled as A are known as
and offer evidence of a common ancestor.
penguin
А
bat
alligator
human
extinct structures
O sequential structures
analogous structures
homologous structures
Answer: Homologous structures.
Explanation: The bones labeled A have similar structural arrangement in all the organisms but perform different functions in each organism
The bones labeled as A are known as homologous structures. Therefore, option D is correct.
What are homologous organs?Homologous organs are those present in several creatures that share a common ancestor and fundamental structure but differ in the roles they perform. The man's forelimbs, a cat's forelimbs, a whale's flippers, and a bat's wings are all examples of homologous organs.
Homologies are characteristics shared by two or more species and derived from their common ancestor. For instance, our common ancestor who lived more than 300 Mya ago left us with both the human five-fingered hand and the lizard's five-toed foot.
The forelimbs of penguins, bats, alligators, and humans are examples of homologous organs. Therefore, option D is correct.
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