Answer:
b) meiosis
Explanation:
Answer:
B. Meiosis
Explanation:
Meiosis involves two DNA divisions.
what is the device used to observe cells ?
Answer:
Microscope
Explanation:
A microscope is an instrument that can be used to observe small objects, such as cells. The image of an object is magnified through at least one lens in the microscope.
Question
What is the device used to observe cells?
Answer
MicroscopesWhat is Microscopes?
Microscope is an instrumet or device that can be used to observe small object , even cells or smal organisms.#LearnwithBrainly
Explain spermatogenesis and oogenesis.
Answer:
yep, my explanation
Explanation:
you see, it is a very dirty cycle, when you have a dioploid cell, you have your typical duplication of sister chromotids, but producing sex cells or gametes which would become a zygote through dirty interactions come to form one dioploid cell and it will start doubling like the rest of the human body, until it comes out of the other human's body. meiosis, or the formation of gamates are created with a crossover where one diolpoid cell takes one half of the chromosome and the other half and exchange a tiny bit of it before splitting into 2 DIFFERENT gametes cells because of the cross-over and hence ther term natural selection
Protein synthesis involves (Hint...look at the diagram)
A. DNA creating mRNA which is used to make a polypeptide
B. the production of energy
C. the production of a gene and DNA
Answer:
A. DNA creating mRNA which is used to make a polypeptide
Explanation:
Protein synthesis process involves the DNA creating mRNA, which is used to make a polypeptide.
A mature animal cell is different from a mature plant cell because
Answer:
Vacuole: A mature plant cell has a large vacuole, whereas animal cells may contain a number of small vacuoles. Location of nucleus: in plant cells, it lies on one side in peripheral cytoplasm, whereas in animal cells, it is generally in the center.
Explanation:
Name & describe the six essential activities of the digestive tract.
Answer:
Ingestion: Consuming something orally, whether it be food, drink, medicine, or other substance; the first step of digestion. bolus: a round mass of something, especially of chewed food in the mouth or alimentary canal.
Propulsion: Propulsion means to push forward or drive an object forward. A propulsion system is a machine that produces thrust to push an object forward. On airplanes, thrust is usually generated through some application of Newton's third law of action and reaction.
Mechanical Digestion: Mechanical digestion is a purely physical process that does not change the chemical nature of the food. Instead, it makes the food smaller to increase both surface area and mobility. It includes mastication, or chewing, as well as tongue movements that help break food into smaller bits and mix food with saliva.
Chemical Digestion: Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.
Absorption: Absorption is a condition in which something takes in another substance. The process of absorption means that a substance captures and transforms energy. The absorbent distributes the material it captures throughout whole and adsorbent only distributes it through the surface.
Defecation: Defecation is the term given for the act of expelling feces from the digestive tract via the anus.
Explanation:
Hope this helps <3
Which type of junctions must there be between cells to form a barrier?
Breeding a dog that is small and well suited for hunting small game is the result of…
A- evolution
B-natural selection
C-artificial selection
D-adaptation
Answer:
d
Explanation:
adaptation allows the dog to evolve for small game
Which factor can cause secondary succession?
clear cutting
glacial melting
competition
predation
Answer:
first one
Explanation:
clear cutting
Answer:
A
Explanation:
EDGE
Each Taxonomy (category) gets less and less specific as they go further down the list.
A. True
B. False
Answer:
B. False
Explanation:
The taxonomies get more specific as you move down the line. The current eight levels go like this:
Kingdom (most general)PhylumClassOrderFamily/SubfamilyTribe/SubtribeGenusSpecies (most specific)As you can see, the taxonomies get increasingly more specific as we go further down.
What does Eubacteria mean?
A. True bacteria
B. Old bacteria
C. Safe bacteria
D. Ancient bacteria
Answer:
It means "True bactria" --> A.
Answer:
A. True bacteria
Explanation:
Eubacteria means "True bacteria".
Question 4 of 10
What percentage of the air is found in the bottom two layers of the Earth's
atmosphere?
A. 1%
B. 29%
C. 99%
D. 49%
SUBMIT
Need ASAP
Answer: 99%
Explanation:
The troposphere itself contains 99% of air.
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
What is photosynthesis
CARRYONLEARNING(◕ᴗ◕✿)
Your school uses stacks of paper every year for printing test papers and worksheets that students later submit. After the test papers and worksheets have been checked and graded; what can the school do to recycle them?
I KNOW YOU NEED ANSWER BUT I NEED POINTS
I'M SORRY HOPE YOU UNDERSTAND
SORRY I'M REALLY SORRY HOPE YOU FORGIVE ME FOR THIS
Answer:
Nothing
Explanation:
Just sell them to recycling companies
which is not true about fungi
1 rgey lacks chlorophyll
2 they have myceliumption 2
3 they lacks cell wall
4 they stores food as glycogen
4 they stores food as glycogen
Identify two processes that from igneous rocks
Answer: Igneous rocks are formed by the melting and cooling of molten rock.
Explanation: Extrusive rocks are those that erupt as lava from volcanoes onto the surface. Intrusive rocks, on the other hand, are created when magma cools underneath.
hope this helps best of luck mate! :)
What would happen to aquatic organisms if solid water were denser than liquid water
Answer:
If water in its solid form was denser than water in its liquid form, lakes and ponds would freeze solid to the bottom during winter, and no longer provide viable habitats.
Human beings belong to .........
A. Kingdom Protista
B. Kingdom Fungi
C. Kingdom Plantae
D. Kingdom Animalia
Answer: D. Kingdom Animal
Explanation: Among other animal characteristics, humans can move on their own, so they are placed in the animal kingdom. Further, humans belong to the animal phylum known as chordates, because we have a backbone. The human animal has hair and milk glands, so we are placed in the class of mammals.
Answer:
D. Kingdom Animalia
Explanation:
Human beings belong to kingdom Animalia. So, option (D) is correct.
During the Second Industrial Revolution, which building material became one of the most important in the world?
brick
wood
stone
steel
Gut bacteria provide all of the following benefits Except
Answer:
Despite the acidic of the stomach, diverse phylotypes of resident microbes thrive in the stomach.
Explanation:
Scientists found members of a plant species they did not recognize. They wanted to determine if the unknown species was related to one or more of four known species, A, B, C, and D. The relationship between species can be determined most accurately by comparing the results of gel electrophoresis of the DNA from different species. The chart below represents the results of gel electrophoresis of the DNA from the unknown plant species and the four known species.
Complete question:
Scientists found members of a plant species they did not recognize. They wanted to determine if the unknown species was related to one or more of four known species – A, B, C, D. The relationship between species can be determined by comparing the results of gel electrophoresis of the DNA from different species. The chart below represents the results of gel electrophoresis of the DNA from the unknown plant species and the four known species.
Which two known plant species is the unknown plant species most closely related to?
Answer:
Species C is the most closely related, followed by species D.
Explanation:
Gel electrophoresis technique is used to separate different fragments of DNI, RNA, and other macromolecules or proteins, concerning their size/weight and charge.
Gel electrophoresis of DNI lets us visualize how many different fragments of the molecule are present in a sample and how they differ from each other. The presence of fragments of the same size will be distinguished as a line named band. Each band represents many DNI fragments of similar size placed in the same position. The result of the gel electrophoresis will be different bands in different positions according to their sizes. The biggest ones will not migrate in the gel as much as the smallest ones.
In the exposed example we can assume that the most closely related species is C. The second most similar is species D.
The gel electrophoresis of the DNA from the unknown plant species resulted in five different bands, which means five types of fragments of different sizes.
Four of the five bands expressed by the unknown species coincide with the bands of species C. Species C only lack one band to be exactly the same.Species D coincides in three bands and lack two bands to be exactly the same as the unknown species. Species A only coincides in one band. Species B does not coincide in any band, meaning that this is the most different oneFor a better understanding, look at the attached files, where you will find the chart.
Why are third parties important in a political system?
Answer:
Third parties are important in a political system because they serve an important role in our political system by forcing major political parties to address new issues they might not have previously addressed very much. And third party candidates can also greatly impact an election by taking away votes from one of the major political party candidates.
assume that cody used a weak magnet and the flake of cereal was not attracted to it what conclusion might he have drawn?
Answer: he might have concluded that the flake of cereal was not magnetic
Explanation:
Two rabbits mate, one is all dominant (FF) and one is all recessive (ff). The dominant gene is black and the recessive is white. How many offspring out of every four will be white? (complete a Punnett square to help yourself)
zero
two
one
three
THANK YOU TO WHOEVER HELPS <3
Answer:
D): Two
Explanation:
If the first half (2) of the rabbit offspring`s are black dominant genes (FF), and the other two are recessive genes that are white (ff), then two white offspring`s it is; if we follow the Punnet square.
(I searched up a similar question. Do not mind me, just earning some points)
Hope this helped.
Answer:
0
Explanation:
Amoebas make exact copies of themselves. Therefore, they reproduce
A. asexually buy the process of MEIOSIS
B. sexually by the process of MITOSIS
C. sexually by the process of MEIOSIS
D. asexually by the process of MITOSIS
Answer:
D.
Explanation:
You can rule out B and C because offspring produced sexually are not identical to their parents. The amoebas reproduce by binary fission, which is a form of asexual mitosis.
Answer:
D. asexually by the process of MITOSIS
Explanation:
Mitosis is a form of asexual reproduction in simple living organisms. The outcome of each cell cycle is two identical cells. Mitotic checkpoints happen at certain stages of mitosis to ensure that each cell receives the same amount of DNA.
there is a decreased in the production of
Answer:
Espero sirva mi respuesta
Explanation:
Suerte
What are three benefits of vertical farming that provide an advantage over horizontal farming.
Answer:
Minimise water usage
Weather doesn't affect the crops
There is less exposure to chemicals and disease
Explanation:
1. Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while lactase itself remains unchanged. Lactase is an example of a(n) . 2. A(n) is a molecule that can bind to an enzyme and prevent the enzyme from working. There are two types: a(n) binds to the active site of the enzyme; a(n) binds elsewhere on the enzyme. 3. Enzymes speed up chemical reactions by lowering the , which allows the reaction to proceed much more quickly. 4. During an enzymatic reaction, a molecule of binds to the enzyme and is broken down into one or more molecules of , which are released. 5. The specific location within an enzyme molecule where the substrate binds is called the .
Answer:
1.) Lactase is an example of ENZYME.
2.)An INHIBITOR is a molecule that can bind to an enzyme and prevent the enzyme from working.
3.)Enzymes speed up chemical reactions by lowering the ACTIVATION ENERGY,
4.) a molecule of SUBSTRATE binds to the enzyme and is broken down into one or more molecules of PRODUCT which are released.
5.) The specific location within an enzyme molecule where the substrate binds is called the ACTIVE SITE.
Explanation:
An enzyme is defined as the substances that aids in the breaking down of complex food substances, taken in by animals, into simple, soluble and diffusible substances before they can be absorbed into the body. In the enzymatic reactions, a molecule of SUBSTRATE binds to the ACTIVE SITE of an enzyme and is broken down into one or more molecules of PRODUCT which are released.
There are different types of enzymes which are named according to the type of good they digest, these include:
--> Lactase: breaks down Lactose
--> proteases: breaks down proteins
--> Amylases: breaks down carbohydrate
Enzymes have the following characteristics:
--> They are proteins
--> They are specific in action. For example Lactase can only act on lactose.
--> They can be inactivated by INHIBITORS.
--> They are sensitive to temperature
--> They speed up a reaction by lowering the ACTIVATION ENERGY
Heat and light on Earth are unevenly distributed because they cannot receive heat and light equally in all parts of the earth.
Answer:
True
Explanation:
The earth receives unequal amount of light energy and heat energy form the sun. There is variation in the solar energy at different parts of the world due to factors like atmospheric circulation as well as the distribution of the land and the sea.
The main factors which results in the unevenly distribution of the heat and light from the sun to the earth are :
length of the daythe angle of inclination of the rays of the sunearth's rotationconfiguration of the land patternstransparency of the atmosphereThe sun provides more light and heat at the equatorial regions than the polar regions.
Amalia has the flu, a communicable disease that causes a cough and a runny nose. Which best describes how she likely got it?
She does not exercise.
She has a poor diet.
She touched the doorknob in a classroom.
She inherited it from her parents.
Answer:
She touched the doorknob in a classroom.
Answer:
She inherited it from her parents or She touched The doorknob in a classroom