A basic plant cell is shown.
Plant Cell
X
KEY
W-Vacuole
X-Nucleus
Y-Mitochondrion
z-Chloroplast
w
-Z
Which organelle stores hereditary material and coordinates the activities of the cell?
Organelle W
Organelle X
Organelle Y
Organelle z
Answer:
organelle X
Explanation:
the nucleus controls all activities carried out by the cell
USING THE ORGANELLES NUCELEUS, CHROMOSOMES, AND CELL MEMBRANE ANSWER THE FOLLOWING BELOW PLEASE!!!!!
Answer:
Jason, i don't have much time because I'm very tired and i have to go to bed but this a good example of homeostasis.
Imagine that the cell is exposed to some kind of stressor such as extremes of temperature, exposure to toxins, or mechanical damage. The chain reactions will be
Disruption or the formation of cell membrane blebsAlteration of protein synthesis and accumulation of altered proteins in the ERAlteration of the chromatin of the chromosomes inside the nucleus and DNA damageAlteration of the permeability of organelles such as mitochondria with consequent alterations in metabolismDecrease in ATP levels and increase in cytoplasmic calcium levelThe combination of all this can lead the cell to death but it can respond in various ways:
the cell can decrease protein synthesis and induce the transcription of specific stress-sensitive chromosomal genes that correct altered proteinsIt can respond to DNA damage by stopping replication and trying to repair it If it cannot survive it can commit suifcide so as not to harm other cells what occurs overtime that would cause the Shy birds to become less common in the city?
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The major reason for bird species decline is loss of habitat, especially grasslands and forests. All have experienced declines in some areas since the 1960s and '70s, and further declines are anticipated, due to habitat loss and deforestation, and climate change
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What is the weather currently like in northwestern North Dakota?
!!!!! HELPPPPPP!!!!!
Answer:
Right now it is 42°F
(Is this what you are asking?)
anyone down to be friends? :3
Answer:
sure , me :)
Explanation:
What would the Punnett square of a female hybrid and a male whith colorblindnes look like?
Answer:
I think it's correct but i'm not sure
Explanation:
+ is normal vision and dominant
c is colourblind and recessive
How are colorful flowers usually pollinated?
Practice 1: Choose all the answer choices that represent the use of trees,
A Heat to cook food
В. Lumber to build homes
C. Materials to make tools
D .Fire to warm homes
Answer:
bc
Explanation:
trust mate i got an a plus i think or a normal a
1. Why does the moon go through Phases?
I
2. Why do we experience solar and lunar eclipses?
3. What is the underlying reason the Earth goes through
Seasons?
Explanation:
1.The Moon has phases because it orbits Earth, which causes the portion we see illuminated to change. The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 days. The Moon spends the extra 2.2 days "catching up" because Earth travels about 45 million miles around the Sun during the time the Moon completes one orbit around Earth.
2.
An eclipse is the result of the total or partial masking of a celestial body by another along an observer's line of sight. Solar eclipses result from the Moon blocking the Sun relative to the Earth; thus Earth, Moon and Sun all lie on a line. Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.Lunar and solar eclipses occur with about equal frequency. Lunar eclipses are more widely visible because Earth casts a much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse. As a result, you are more likely to see a lunar eclipse than a solar eclipse.
3.Why Do We have Seasons?
As the earth spins on its axis, producing night and day, it also moves about the sun in an elliptical (elongated circle) orbit that requires about 365 1/4 days to complete. The earth's spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected. Since the tilt of the axis is 23 1/2 degrees, the North Pole never points directly at the Sun, but on the summer solstice it points as close as it can, and on the winter solstice as far as it can.
Why Do the Seasons Change on Earth?
Two things cause the seasons to change. First, the Earth moves around the Sun. Second, the Earth has a tilted axis of rotation.
The Earth spins around an axis. This imaginary line extends from the South Pole to the North Pole. But the Earth’s axis is not vertical. It’s actually tilted at an angle of 23.5°. The planet is always tilted in the same direction as it orbits the Sun.
Which sediment has the greatest permeability?
4.1. Write down 3 ideas for how you can make new
friends.
4.1.1.
4.1.2.
4.3
Answer:
1) go up to someone. 2)(if ur in school) go up and ask them if they're in one of ur classes. 3)build a conversation from there.
What is the phenotype and the genotype of the white flowered offspring shown in the Punnet square below? Explain how you know by referring to the definition of each.
Answer:
Genotype: The letters that make up the individual. E.g. TT or Tt. ▪ Phenotype: The physical characteristics of the particular trait. E.g. Tall or short. ▪ Dominant trait: Signified by capital letter-E.g. T.
Explanation:
Hope this helps pls mark brainliest.
help is very much appreciated <3 (7th grade science)
Answer:
1. N/A
2. a cell
3. organ system
4.Tissues are groups of similar cells that have a common function. While an organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body.
5.
nervous system - The nervous helps the whole body communicate, our body needs to communicate so we can actually do things like breathing.
respiratory system - The respiratory system gives cells the oxygen they need to survive, and cells keep humans alive. Humans cannot survive without breathing.
digestive system - The digestive system is important for breaking down foods into nutrients, those nutrients are then used to heal and nourish the human body. The digestive system also helps us pass toxic wastes that build up in our bodies, so we don't get sick.
--------------
hope this helps :)
PLEASE HELP ASAP
In patients infected with nonresistant strains of the tuberculosis bacterium, antibiotics can relieve symptoms in a few weeks. However, it takes much longer to halt the infection, and patients may discontinue treatment while bacteria are still present. How could this result in the evolution of drug-resistant pathogens?
The bacteria are still present and may obtain antibiotic resistance to spread to other species by horizontal gene transfer.
Antibiotics have become diluted and weak because of a limited supply.
Bacteria have purposefully directed their immune system to resist the effect of the antibiotic.
Resistant bacteria are polyploidy and can resist the antibiotic, a trait that is passed on to their offspring.
Answer:
The bacteria are still present and may obtain antibiotic resistance to spread to other species by horizontal gene transfer.
Compare and contrast chemical weather by water
and by oxygen. How are they similar and how are
they different?
Answer:
Physical and chemical weathering often happen at the same time, but the ... Water that freezes in cracks and forms ice, salt from evaporated seawater, ... For example, the rocks on a riverbed smooth each other because they collide in the current. ... Oxidation is the reaction of oxygen with chemicals in a rock.
Explanation:
If sodium (Na) bonds with Chlorine (Cl), which statement is true?
Group of answer choices
An electron is shared between sodium and chlorine and a covalent band is formed
An electron is transferred from sodium to chlorine and an ionic bond is formed
An electron is transferred from chlorine to sodium and an ionic bond is formed
An electron is transferred from sodium to chlorine and a covalent bond is formed
Answer:
2
Explanation:
if sodium bonds with chlorine ionic bond formed
Which statement is true regarding nuclear power plants
please someone do this, i hate biology :(
Answer:
C - Natural selection is causing larger bird beaks.
E - Because the seed hardness has increased the birds need bigger beaks to crack them.
R - This means the birds with larger beaks are not able to crack the seeds, this causes starvation and the birds that have small beaks die as a result. However, birds with larger beaks are able to crack the seeds and eat. Those birds can then reproduce and produce more birds with larger beaks. So the population of large bird beaks has increased, but the population of small bird beaks has decreased.
Viruses are often confused with living things. This is because
Viruses are composed of proteins and genetic material; they maintain
homeostasis
Viruses are composed of proteins and genetic material; they possess the ability
to produce proteins
O Viruses are composed of proteins and genetic material; they possess a
metabolism and ability to produce proteins
Viruses are composed of proteins and genetic material; and may be classified
(sorted) by their amino acid sequences
Answer:
*
Explanation:
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea
In guinea pigs, short fur (S) is dominant to long fur (s). Two heterozygous guinea pigs
(Ss) mate. Complete the Punnett square and then list the percentages of the
expected genotypes for their offspring.
Explanation:
A way I like to remember heterozygous is by remembering that the other word for heterozygous because brainly wont let me say it apparently. The same gender liking each other, so (word) is same, hetero is different.
each square would have 25% each because 100%÷4=25.
Dominant one is like mixing black and blue together,the black is gonna give a dark effect to blue so black is dominant.
Blue is recessive.
The percentage of the Ss is 75% while the percentage of the ss is only 25%.
Performing a crossGiven that we have the genotypes of the both parents as Ss. The Ss imples that the gene for short fur is dominant over the gene for long fur.
Now, when we perform te cross for the first generation, we will discover that we have the offspring; Ss, Ss, Ss and ss. The percentage of the Ss is 75% while the percentage of the ss is only 25%.
Learn more about genotype: https://brainly.com/question/365923
PLS HELP ASAP 50 POINTS!!
Select the homologous structures.
a. human arm
b. whale's flipper
c. bird's wing
d. cat's leg
Answer:
Flipper of a whale and bird's wing are homologous structures.
For more better explanation see below.
Explanation:
Flipper of Whale is homologus to the wing of a bird. Homologous organs - The structure which are similar in their morphology, anatomy, genetics and embryology, but dissimilar in their functions.
Flipper of whale and wing of bird has similar morphology and anatomy, but differ in their functions according to their species as well as the habitat where they live in.
A dolphin’s flipper, bird’s wing, cat’s leg, and the human arm are considered homologous structures. Whereas human beings have bones such as the humerus, ulna, radius, wrist bones, and fingers, these features appear as similar bones in form in the other animals. Bats, whales, and many other animals have very similar homologous structures, demonstrating that these creatures all had a common ancestor.
PLEASE MARK ME BRAINLIEST.
Answer:
Human arm and cats leg
Explanation:
Image B depicts three skulls. Do you think the image supports the fact that all three organisms share an evolutionary relationship? Explain your answer using evidence from the image.
Answer: This is a series of skulls and front leg fossils of organisms believed to be ... 3. What is the biggest change in leg anatomy that occurred from the dawn ... Shown below are images of the skeletal structure of the front limbs of 6 animals: human,
Explanation: i think
Explain the difference between sexual reproduction and asexual reproduction. Explain either an advantage or disadvantage for
each.
In asexual reproduction, reproductive organs aren't used but they're used.
advantage of sexual- A lot of genetic variation. since they have DNA of two parents. they can survive more and adapt more.
disadvantage of asexual- diversity is limited. Since the organism only gets the DNA of one parent, they wouldn't be able to really survive if something happened.They would easily be extinct.
Sorry I can't really cone up with better words but I hope you get the idea. it all comes down to natural selection really if you've learned about it. Hope it helped!!!
True or False (Please tell me Asap)
Answer:
1. false
2. false
3. true
4. true
5. true
Explanation:
Mendel is considered the Father of Genetics. His famous pea plant experiments helped to formulate several laws in genetics that have
stood the test of time with very little modification. Match each law or term with the correct description/definition.
Answer:
The Principles Of Mendel's Genetics
1.Law of Segregation
2.Law of independent assortment
3.Law of dominance
4.Recessive Allele
5.Co-dominance
6.Incomplete Dominance
Explanation:
The Law of Segregation, often known as Mendel's First Law, stipulates that two alleles for a trait segregate during the production of gametes, resulting in each gamete having just one copy of each allele.
What is an explanation of the concept ?This concept explains why a cross between two animals with dissimilar features, such as flower colour, can occasionally result in an intermediate phenotype in the progeny.
Mendel's Second Law, or the Law of Independent Assortment, states that the inheritance of one feature is not reliant upon the inheritance of another trait. This concept explains why a cross between two animals with dissimilar features can result in offspring that exhibits every feasible combination of the two qualities.
Mendel's research with pea plants was groundbreaking in thea branch of genetics. His thorough research and tests resulted in the development of two laws that are now the cornerstones of genetics. According to the Law of Segregation, two alleles for a trait separate from one another throughout the development of gametes, leaving just one allele per trait in each gamete.
This concept explains why a cross between two animals with dissimilar features, such as flower colour, can occasionally result in an intermediate phenotype in the progeny.
According to the Law of Independent Assortment, one trait's inheritance is not correlated with that of another. This law explains how a cross between two creatures with distinct features can result in offspring that can display any combination of the traits.
Learn more about Mendel's Second Law at:
https://brainly.com/question/13243160
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IS MY FINAL EXAM I NEED HELP!
The base pairs in a DNA strand are held together with hydrogen bonds. In what way would a cell be most affected if these were covalent bonds Instead?
A) The cell would need to make new DNA each time the strand was opened
B) The cell would only be able to open and close the DNA strand when it replicated.
C)The would have to take in and use more energy in order to break the covalent bonds.
D)The cell would need to replace the nitrogenous bases each time the DNA strand opened.d
Answer:
I think C)The would have to take in and use more energy in order to break the covalent bonds.
Explanation:
Since hydrogen bonds are weaker than covalent bonds.
The organism used in bread making is?
(a) Yeast
(b) Aspergillus
(c) Mushroom
(d) Rhizobium
Answer:
Yeast is used in bread making
When a new viral infection appears in a population,scientists usually try to develop a vaccine against the virus. Which substances would most likely be contained in the new vaccin
Answer:
Antigen, stabilizers, surfactants, diluents, preservatives
Explanation:
Antigen: This is part of the protein structure virus or part of its genetic material. These parts are active. But sometimes, the inactivated form of the virus is also included in the vaccine. Stabilizers: Avoid other chemical reactions occurring in the interior of the vaccine. Surfactants: They prevent the occurrence of sedimentation and agglutination of the elements inside the vaccine. Diluent: Used to dilute the vaccine in an appropriate concentration before being used. Preservatives: As the word says, preservatives avoid any possible contamination of the vaccine. These elements´ use depends on the doses prepared. If it is only for one-person use, then they are not needed. But if the doses are to be used by more than one person, they need preservatives because once the vaccine is opened it is vulnerable to contamination.3. Jelaskan fungsi ragi atau bibit dalam proses pembuatan produk pangan bioteknologi konvensional tersebut! Unsur apakah yang terdapat dalam ragi atau bibit?
Explanation:
Genetically engineered foods (GE foods), or bioengineered foods are foods produced from organisms that have had changes introduced into their DNA using the methods of genetic engineering. Genetic engineering techniques allow for the introduction of new traits as well as greater control over traits when compared to previous methods, such as selective breeding and mutation breeding.[
Commercial sale of genetically modified foods began in 1994, when Calgene first marketed its unsuccessful Flavr Savr delayed-ripening tomato. Most food modifications have primarily focused on cash crops in high demand by farmers such as soybean, corn, canola, and cotton. Genetically modified crops have been engineered for resistance to pathogens and herbicides and for better nutrient profiles. GM livestock has been developed, although, as of 2015, none were on the market.
English
Hope this helped
How do you think most of the CO2 got into the plants?