A multicellular organism begins life as a single cell-a fertilized egg with a
complete set of chromosomes. The picture in Figure 10-2 above shows how the
cell divides to become two cells, then four cells, eight cells, and so on. Which of
the following statements best describes what happens during this process?
Answer options:
a.) chromosomes are duplicated before cell division so that each new daughter cell has a complete set.
b.) chromosomes are divided evenly during cell division so that each new daughter cell has an equal share of the original set.
c.) chromosomes are stored in the original cell to direct the division of all daughter cells, which do not have their own chromosomes.
d.) chromosomes are randomly distributed during cell division so that some new cells have partial sets while others have complete sets.
Answer:
a.) chromosomes are duplicated before cell division so that each new daughter cell has a complete set.
Explanation:
The cell divisions that allow organisms to grow are called mitosis. Before mitosis, all the DNA is duplicated.
Then, during mitosis, it condenses to form chromosomes. The identical chromosomes align in the centre of the cell. Then, they are equally distributed to among two daughter cells.
These two daughter cells each have a complete set of chromosomes. Each daughter cell identical to the parent cell and to the other daughter cell.
1.What is the structure in the blood vessels where gases are exchanged?
2.Explain how vaccinations work to provide immunity!
Thanks for your help!!
Answer:
basically gas exchange happens in alveoli where Oxygen enters in RBC and co2 is released where oxygenated and deoxygenated bloods get seperated
Without this process, life would cease to exist because it is the first step in energy transfer from the sun.
Cellular metabolism
Cellular division
Oxidation
Photosynthesis
Answer: Photosynthesis.
Explanation: Photosynthesis is the process by which the producers make food by the help of photosynthesis.
This is the first step of the ecosystem, as there will be no food available to the organism if there will be no photosynthesis.
The producers use the sunlight available for the this vital process. It is the first step of the energy transfer.
you are provided with a mixture of iron filings, sand and sawdust.explain how u will separate each of these substance from the mixture
A group of tissue that perform a similar function is called__________________.
A. cells
B. tissues
C. organs
D.organs systems
SORRY FOR SPAMMING BUT PLEASE HELP I ALWAYS FAIL AT BIO
Answer:
dinasour A lived before dinasour B
What the effects of sunlight on the aquatic life inhabiting your body of water on the Indian ocean?
Answer:
Any living creature that lives beneath the Pacific surface will absorb the sunlight for nourishment. If the sun banishes all the living organisms (plants and algae) will suffer due to the lack of photosynthesis. The sun has a massive effect on the aquatic life in the oceans, lakes, or any body of water; including the Pacific Ocean.
Explanation:
:)
What it means to take care of the earth
Answer:
Caring for the earth refers to the sustainable use of natural resources, minimize the environmental degradation and pollution and maintain the earth as the favorable shelter for all the living beings. The caring capacity is the capacity of things to tolerate the pressure over them.
What stage of photosynthesis is similar to citric acid cycle?
Answer:The Krebs cycle is part of cellular respiration. This cycle makes ATP and NAPH. Do photosynthesis and cellular respiration occur at the same
Explanation:
The cycle of the moon circling the earth is _________
Answer:
The Moon circles the Earth once every 27.3 days – each sidereal month – but its phases repeat every 29.5 days – each synodic month. The difference arises because the Earth itself moves around the Sun by a distance of around thirty degrees each month.
Explanation:
Who knows how to do this pls answer it 100% smart pls tell me the correct answer smart people
Answer:her arm is puffy, red, and swollen
Explanation:
What will be the possible last stage in the life cycle of Betelgeuse and Spica?
Answer:
That made the outer layers cool and expand, thus growing larger and larger until eventually becoming a red supergiant. After a red supergiant explodes, it will become one of two things
Explanation:
. Gravity crushes its core to where it is now just stellar remnants. Stellar remnants are clouds of gas and dust wondering around space, but eventually the gas and dust will get sucked back into the nebula starting a new sta
1)) The average depth of a lake is 10 meters. Do you think sunlight acts a limiting factor the same way it does in the ocean? Why or why not?
2)An area with a high population of crayfish in local lakes and rivers has begun experiencing acid rain, rain that has a pH of 3.0 - 4.0. Predict how this rain will impact the crayfish population.
Answer:
No.
Explanation:
No, the sunlight does not act as a limiting factor the same way it does in the ocean because the lake has lower depth as compared to ocean which is very deep i. e. more than 3000 meters where sunlight does not reach and we know that sunlight is very important for the survival of plants. Sunlight reach in the water about 1000 meters so plants can survive and do photosynthesis due to its low depth.
Acid rain will impact the crayfish population because acid rain decreases the pH of water and this lower pH causes death of the crayfish and also the food of crayfish and thus lower the population of crayfish due to unavailability of food..
What is needed to change rock and minerals from one type to another?
a
Water and pressure
b
Radiation energy
c
Lava and heat
d
Heat and pressure
I NEED HELP PLEASE THIS IS A TIMED TEST!
An enzyme works only with a specific substance like a
Fork and knife
Key and lock
On and off switch
A dimmer switch
Answer:
A dimmer switch
that the answer
Most bacterial cells have a cell membrane and a cell wall.. true or false
Answer:
true
Explanation:
Can anyone explain in detail the process of mitosis? (Including PMAT)
Answer:
Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.
Explanation:
Make sure to edit so your not copy-writed.
How does rhizopus reproduce
Rhizopus species grow as filamentous, branching hyphae that generally lack cross-walls (i.e., they are coenocytic). They reproduce by forming asexual and sexual spores. ... In sexual reproduction, a dark zygospore is produced at the point where two compatible mycelia fuse.
Explanation:
i hope it helps
why do plants need to resort to natural and artificial reproductive methods to propogate plants
Answer:
plants can undergo natural methods of Asexual reproduction performed by the plants its self or artificial methods ,aided by humans
Explanation
in natural asexual reproduction roots can arise new plantsWhat happens when magma cools during the rock cycle? Igneous rock is formed. Metamorphic rock is melted. Sediments form sedimentary rock. Metamorphic rock forms sediments.
Answer: igneous rock is formed
Explanation:
When magma cools down during the rock cycle then igneous rock is formed. Thus, the correct option is A.
What are Igneous rocks?Igneous rock is one of the three main rock types, while the other being sedimentary and metamorphic rocks. Igneous rocks are the rocks formed through the cooling and solidification of magma or lava from volcano. The magma can be derived from partial melts of existing rocks in either a planet's mantle or the crust.
Lava from the volcano cools to form volcanic rock as well as volcanic glass. This magma can also extrude into Earth's atmosphere as part of a violent volcanic explosion. This magma then solidifies in the atmosphere to form volcanic rock called as tephra. In the atmosphere, tephra is more often called as volcanic ash.
Therefore, the correct option is A.
Learn more about Igneous rocks here:
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The image below shows a small bean sprout what does the sprout need to grow into a healthy plant?
Describe how the elk population affects the size and growth of the trees?
Please further explain.
Explanation:
The population of plants was reduced because of the overgrazing of plants by elk. Overgrazing occurred because the elk population was no longer controlled or checked by the wolves (their predator).
I added a picture it’s simple plz help
Answer:
The higher the density, the more closely packed the particles called atoms and molecules. The lower the density the more spaced muy the particles are
If density = mass divided by volume, than the more volume a material has the less dense it is. For example, if there are five people in a room that is 5ft. by 5ft. the people will be tightly packed together and more dense. If those same five people were in a room that is 20ft. by 20ft. they would have more space and it would not be as dense in the room.
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Using the table on the right as a guide, answer the following questions about light-independent reactions.
Describe the process of light-independent reactions.
What are the products of light-independent reactions?
Answer:
Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation, reduction, and regeneration.
Answer:
It uses ATP and NADPH and converts it into glucose and other carbohydrates; glucose and other carbohydrates
Explanation:
EDGE 2020
what are the differences between antibiotics and vaccines???????........................
Answer:
Antibotics are to help treat a sickness while vaccines are to help prevent certain sicknesses... hope that helps a little.
Explanation:
Antibiotics are used to treat severe infection, but Vaccines prevent infections from ever becoming established. Vaccines are right to be used for protection against any future infection. and Antibiotics are effective for stopping the reproduction process of bacteria and do not have any effect on viruses. These are also not to be used for preparing for potential future infection.
Hope this Helps! May I Have Brainliest? <3
How did U.S. environmental policy shift in the 1980s?
A. A backlash led to efforts to weaken federal environmental laws.
B. It was basically the same as in the 1960s and 1970s.
C. Most of the important environmental laws were finally passed.
D. There was a large push to achieve sustainability quickly.
Answer:
eu acho que é a C
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which best describes a gene?
Answer:
Asegment of chromosomal DNA
Explanation:
A gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes. It is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person's unique physical features.
Answer:
A piece of a chromosome
Explanation:
A.P.E.X
its biology, help please :)
what is the "Cell (plasma) membrane"? Question 1 options:
the structure that forms the surface of a cell separating its contents from the outside world.
a type of cell without a membrane-bound nucleus and without membrane-bound organelles, considered by scientists to be a more primitive type of cell than the more complex eukaryotic cells.
a small organelle, made of RNA and protein and found in both prokaryotic and eukaryotic cells, that forms proteins from amino acids .
a cell organelle that is essential to cell functions including reproduction, contains the cell's chromosomes, and is enclosed by a membrane.
Answer:
The first option
Explanation:
The cell membrane is the structure that forms the surface of a cell separating it's contents from the outside world.
Answer:
i think it is a type of cell without a membrane
Explanation:
i'm not sure sorry hawk i will look more into it to help through
In single-celled organisms, materials are stored primarily in
Answer:Vacuole
Explanation:Vacuoles basically do the functions of storage, ingestion, digestion, etc.