explain how meitosis and fertilization produces genetic variation during sexual reproduction
Answer:
Explanation:
Genetic variation is increased by meiosis
During fertilisation, 1 gamete from each parent combines to form a zygote. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote.
Can traits of organims be improved? Explain why.
Answer:
Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. ... Rather, a genetic mutation causes a difference in fur color, which may help that rabbit hide better in its environment.
Explanation:
A wildlife biologist and her team counted 200 individual deer in an area of 10 square kilometers. What is the population density?
Answer:
The population density is 20
Explanation:
200/10=20
Which of the following groups includes the protists that reside within the cells of corals?
A. brown algae
B. diatoms
C. dinoflagellates
D. ciliates
Answer:
Pretty sure it's C.
Ciliates are the groups of organisms which include the protists that reside within the cells of corals. Thus, the correct option is D.
What are Ciliates?The ciliates are a group of protists which are characterized by the presence of hair-like organelles called as cilia on their membrane which are identical in structure to the eukaryotic flagella, however these are in general shorter and present in much larger numbers than that of flagella, and also with a different undulating pattern than flagella.
Cilia occur in all members of the group and are variously used in the activities such as swimming, crawling, attachment, feeding, and sensation.
Therefore, the correct option is D.
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What is the difference between inorganic and organic compounds? A. Organic compounds are beneficial to the environment and inorganic compounds are not. B. Organic compounds contain carbon and inorganic compounds do not. C. Organic compounds contain ionic bonds and inorganic compounds contain covalent bonds. D. Organic compounds are produced naturally and inorganic compounds are human-made.
Answer: B would be the best answer
Explanation: The primary difference that lies between these organic compounds and inorganic compounds is that organic compounds always have a carbon atom while most of the inorganic compounds do not contain the carbon atom in them. Almost all the organic compounds contain the carbon-hydrogen or a simple C-H bond in them.
Option B is the right answer.
Organic compounds contain carbon and inorganic compounds do not.
Organic compounds contain one or more carbon atoms covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen. Carbides, carbonates, and cyanides are among the few carbon-containing compounds that are not classified as organic.
Organic compounds have covalently bound carbon, hydrogen, and frequently other elements. In chemistry, an inorganic compound lacks carbon-hydrogen bonds, i.e. is not an organic compound. Inorganic chemistry is a discipline of chemistry that studies inorganic compounds.
The most obvious difference between organic and inorganic substances is that organic compounds are primarily the outcome of the activity of a living being. In contrast, inorganic chemicals are obtained through natural processes unrelated to any of the Earth's life forms.
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3. What is the inside of Earth like?
According to cell theory, which of the following household items would be composed of cells? Select one: television rocks Strawberry pond water
Answer:
Strawberry
Explanation:
The unified cell theory was proposed by three scientists in the 1830's, they are: Mathias Scleiden, Theodor Schwann and Rudolf Virchow. They proposed three components that makes up the widely accepted cell theory. The components are:
1) Cell is the basic and fundamental unit of all living things
2) All living organisms are composed of one or more cells.
3) Cells arise from already existing cells
Based on these components of the cell theory, a STRAWBERRY is the household item that would be composed of cells because it is the only living thing (plant) in the option.
D
1 pts
Question 7
Shania wanted to see if eating apples would help her do better on her classwork. The first
day, she didn't eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and
on day 4 she ate 3 apples. Each day she recorded the grades she got on her science work.
What is the independent variable?
the number of apples she ate
O no apples
Ograde she received in science class
Answer:
the number of apples she ate
Explanation:
The independent variable of an experiment is the variable that is manipulated or changed intentionally in order to effect a measurable response in the dependent variable.
In this experiment involving the Shania, where she wanted to test the effect of eating apples on her classwork performance, the independent variable is the NUMBER OF APPLES SHE ATE because that is what changes everyday.
what is the poly name of carbohydrates
Answer:
Polysaccharides
Explanation:
Polysaccharides are the most abundant Carbohydrate found in food. They are long chain polymeric carbohydrates composed of monosaccharide units bound together by glycosidic linkages.
Four Students were having a discussion about how scientists do their work. This is what they said... Antoine: "I think scientists just try out different things until something works" Tamara: "I think there is a definite set of steps all scientists follow called the scientific method." Marcos: "I think scientists use different methods depending on their question." Avery: "I thin scientists use different methods but they all involve doing experiments"
Answer:
Please see below
Explanation:
Between all these kids carrying out this discussion, Tamara is the closest to guessing what scientists do. There is indeed a definite set of steps that scientists undertake in order to conduct science experiments. The scientific method is as follows:
observationmeasurementexperimenttesting the hypothesisFor the laboratory some students put a strip of shiny metal into a beaker of blue solution and then stored the beaker on a shelf overnight. The next morning , the students recorded observations about the metal and the solution in the box below Based on their observation, can the students correctly conclude that a chemical reaction occurred ?
Answer:
Yes, because a new material of a different color formed on part of the metal strip
Explanation: Good luck!
If you measure one hundred centimeters, is the distance more or less than one kilometer?
The distance measure in centimeters is less than the kilometers.
What is centimeters and kilometers?Distance is a physical quantity which is measured in meter. If a man travel then it is measured in meters that defines that how much he travel from one point to another point for all these type of things we use to measure distance.
Centimeter is also a physical quantity which is use to measure distance. 1 centimeter is equal to 0.01 meter and 1 centimeter is equal to 0.00001 kilometer.
Kilometer is also a physical quantity which use to measure the distance 1 kilometer is equal to 1000 mtr and 1 kilometer is equal to 100000 centimeter.
For above conclusion we easily states that the kilometer is large quantity to measure distance while centimeter is smaller quantity to measure distance.
So, we can say that one hundred centimeters is less than the one kilometer.
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Juan has been diagnosed with mono, and the doctor wants to determine if his spleen is enlarged. Where (quadrant, etc.) will the doctor palpate Juan's abdomen? What other organs might be compressed by Juan's enlarged spleen? Given the diagnosis, why is Juan's spleen enlarged and not his stomach or kidney?
Answer and Explanation:
Where (quadrant, etc.) will the doctor palpate Juan's abdomen?Under normal conditions in general the spleen can not be palped because of its reduced size. But when it is enlarged it might be easily touched. The spleen is located under the thoracic cage (rib cage) on the left side, between the 8th and 11th ribs. This would correspond to the left superior quadrant (left hemi-belly).
What other organs might be compressed by Juan's enlarged spleen?The enlargement of the spleen and the liver inflammation are symptoms of the mono disease. This enlargement might affect some neighboring organs such as the stomach, which might be displaced and compressed.
why is Juan's spleen enlarged and not his stomach or kidney?The spleen is part of the immunological system and helps the body to fight infections and filter old bloody cells taking them out of the blood current. This organ might get enlarged because blood cells accumulate in its interior. Red blood cells are excessively stored in the spleen, resulting in anemia. The more cells the spleen retains, the larger it becomes, and hence, the more blood cells it retains and destroys. If the spleen is unproperly working, it kills too many red blood cells and accumulates many others.
The Stomach and kidney are not part of the immunity system and they do not filter blood cells, so they do not seem to be affected by their accumulation.
mitosis A division happens in the next step. Which describes the cells after the next step is complete? A. The cells will have n chromosomes and be diploid. B. The cells will have n chromosomes and be haploid. C. The cells will have 2n chromosomes and be diploid. D. The cells will have 2n chromosomes and be haploid.
Answer:
D. The cells will have 2n chromosomes and be haploid.
Answer:
The cells will have 2n chromosomes and be diploid.
Explanation:
Which choice below is NOT true?
A Rainforests are home to many plants and animals.
B Many medicines have been made from plants found in the rainforest.
C Rainforests are home to many organisms but have little value to humans.
D More varieties of plants are found in rainforests than anywhere else on earth.
Answer:
c is not true
Explanation:
hope this helped!
Answer:c is not true
Explanation:
because I took the test and the person above me is also correct
don't forget to take breaks and drink whatever you want to drink
A 2 L bottle of soda has a volume of 2000 cm³. What is the volume of the bottle in cubic meters?
Answer:
The answer is
0.002 cubic metersExplanation:
To convert it into m³ we use the following conversion
[tex]1 {cm}^{3} = 1 \times {10}^{ - 6} {m}^{3} [/tex]From the question the value is 2000 cm³
To convert it multiply the value by
1 × 10^- 6m³
That's
[tex]2000 \times 1 \times {10}^{ - 6} {m}^{3} [/tex]We have the final answer as
0.002 cubic metersHope this helps you
How could HCI be used to tell the difference between Quartzite and marble
Answer:
It is formed when the sandstone's quartz grains are fused from heat and pressure. Additionally, marble is soft while quartzite is hard and durable. Chemically, marble is composed of calcite while quartzite is not.
Explanation:
(03.03 MC)What happens when a sound wave moves from air to water?
It slows down
It speeds up
It stays the same.
It reverses
Answer:
It slows down
Explanation:
Because water is denser than air the sound waves move through it faster which means that if the sound wave is coming from the water to the air then it will slow down. Also i took the test and got it right.
When a sound wave moves from air to water It slows down.
What is sound wave?Sound is a mechanical wave that travels across a medium by means of the back and forth vibrating of its constituent particles. When a sound wave travels through air from left to right, the energy of the sound wave will cause displacement of air molecules in both the right and left directions.
The direction of the energy flow is parallel (and anti-parallel) to the particle motion. Sound waves in the air are described as longitudinal waves because of this.
Therefore, When a sound wave moves from air to water It slows down.
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Question 6 of 10
Look at the picture below.
Which best describes the bond shown?
A. A covalent bond between two molecules
B. An ionic bond between two molecules
C. A covalent bond between two atoms
D. An ionic bond between two atoms
Answer:
This looks like a covalent bond between 2 atoms. Notice that the 2 electrons in the middle are being shared by both atoms, which is a feature of covalent bonds.
Explanation:
So answer should be "C"
Hope this help have a nice day!
The image depicts the sharing of electron between two atoms which form covalent bond. Thus, option C is correct.
What are the types of chemical bond ?The force of attraction between different constituents like atoms, ions which hold them together is called as chemical bonding.
Different types of bonds formed either from the loss or gain or sharing of electrons between two atoms/molecules.
Ionic bonding in which transfer of electrons from one atom or molecule to another there by generation of opposite charges on individual atoms.
The organic compound exhibit covalent bond that is sharing of electrons between atoms. it can be either polar or non-polar in nature.
Polar covalent chemical bond refers to unequal sharing of electrons between more and less electronegative atom. Water is the best example.
Hydrogen bond can be formed between oxygen and hydrogen where hydrogen develops partial positive charge so that electron can come closer to more electronegative atom.
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Thinking back to yesterday's reading, what type of ecological relationship is it? What are the bacteria doing for us? How do they avoid being killed off by our immune system? Gut Bacteria Reading
Answer:
The relationship between gut bacteria and we the host is a mutualistic relationship. This is a form of relationship where both we and the bacteria benefit from the bacteria living in our gut.
They help us in our digestion process to break down some food particles into their basic units, some of which we would not be able to do without them. They also help to keep the gut’s surface intact, provide vitamins, and fight off other harmful bacteria.
Bacteria use immunity genes to neutralize toxins and protect themselves against been destroyed by our immune system by copying our immune resistance code, and using this code to make their outer membrane.
What is nuclear energy? Plz I need help is it:
•Energy from solar panels
•Energy locked in nucleus of an atom
•Energy of moving electrons
•Energy that travels in waves
C
Because Nuclear energy comes from splitting atoms in a reactor to heat water into steam, turn a turbine and generate electricity. Ninety-four nuclear reactors in 28 states generate nearly 20 percent of the nation’s electricity, all without carbon emissions because reactors use uranium, not fossil fuels. These plants are always on: well-operated to avoid interruptions and built to withstand extreme weather, supporting the grid 24/7.
All that power and potential from a tiny atom.
Answer:
B.) Energy locked in the nucleus of an atom.
Explanation:
I did the assignment on Edge, 2022.
(See the attachment below.)
Hope this helped, good luck on the Unit Test! <3
the middle of oceanic ridges are ____________.
A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics.
what is the charge of a particle of oxygen that contains 8 protons and 8 electrons
Answer:
Neutral
Explanation:
The charge of an oxygen atom is neutral.
The charge should be positive.
The following information should be considered;
In the case when an atom had 8 protons and 8 electrons i.e. oxygen knocking one of the electrons out, makes 8 protons and 7 electrons.The atom now has a net charge of +1 because the 7 electrons cancel the positive charges of 7 of the protons in the nucleus, but there is one remaining proton with a positive charge.Learn more: https://brainly.com/question/10283285?referrer=searchResults
name the medium in which plants grow
Soil is the natural medium, also known as nutrient medium.
In the desert food web shown below, which of the following best describes the transfer of energy between the desert tortoise and coyote?
Why do you think that we do not see large single-celled organisms?
Where does Most of the carbon dioxide in the ocean come from?
1. the air
2. plants and a Animals
3. all the above
4. large factories and transportation
The body monitors the levels of oxygen in the blood to regulate breathing. Isabel is running in a marathon and is near the finish line. She feels out of breath. How will her nervous system work to generate a reaction?
Answer:
Low oxygen pressures in the blood cause the nervous system to respond with hyperventilation.
Explanation:
In our body, the partial pressures of oxygen in the blood is a marker of blood pressure and hyperventilation.
The partial pressure of this gas may be decreasing due to lack of partial pressure of oxygen in the atmosphere that we breathe or in the great respiratory demands, that is why in this case, the partial pressures of oxygen during the marathon decrease.
When decreasing, this is captured by the nervous receptors and the CNS executes an increase in respiratory rate, generating hyperventilation so that the partial pressure of oxygen increases.
These receptors are chemoreceptors, capable of detecting the slight drop in blood pH due to oxygen deficiency associated with hemoglobin, since metabolic acidity is very common in cases of low oxygenation.
what is th function of immunoseppressant for organ transplant patient?
Answer:
Stops the new kidney from being rejected.
Explanation:
Your body will attack the new kidney and try to damage or destroy it. The immunosuppressant drugs suppress your body's ability to do this.
Which of the following is NOT a
grassland biome?
Taiga
Desert
Tropical Savanna
Tundra
Answer:
A
Explanation:
The answer should be Taiga
Answer:
Hey there!
The taiga, desert, and tundra are not grassland biomes.
Let me know if this helps :)