Answer:
rjghghgh
Explanation:
A plant with variegated (two-coloured) leaves was left in the sun for several hours. A piece of one of its leaves were then detached (removed) and tested for sugar.
Explain, as fully as you can, why the yellow region of the leaf had not produced sugar. (5 marks)
Answer:
The yellow leaf was not exposed to the sun so it can't produce sugar.
Explanation:
The yellow region of the leaf didn't produce sugar because it wasn't exposed to sunlight. Part of the leaf was exposed to the sun, thus this leaf produced sugar, while the yellow part of the leaf did not because it was not exposed to the sunlight.
What metal is Earth's core mostly made of? a.)copper b.)titanium c.)iron d.)gold
Answer:
C. Iron
Explanation:
Unlike the mineral-rich crust and mantle, the core is made almost entirely of metal—specifically, iron and nickel. The shorthand used for the core's iron-nickel alloys is simply the elements' chemical symbols—NiFe. Elements that dissolve in iron, called siderophiles, are also found in the core.
I hope this helped ;)
Answer:
Iron
Explanation:
The earth's core is mostly made up of iron and has a radius of about 760 miles. It is surrounded by a liquid outer core composed of a nickel-iron alloy.
What is the evidence for evolution?
Answer:
foills
Explanation:
provide solid evidence that organism from the past are not the same as found
True or false. Introduction of exotic species has beneficial biological and economic effects
Answer:
false
Explanation:
they have afect them by altering the envirament the nature
Please help, is really important to finish my homework!!!!
Would outer space be an ideal spot for a concert? Why or why not?
Answer:
No, there is no gas in space, sound waves need matter to travel on because to make noise they move matter in such a way that i creates noise. Also you cant breathe.
Explanation:
What is the energy that holds the nucleus together?
Answer:
The strong nuclear force
Explanation:
it is stronger than electrostatic repulsion, and allows protons to stick together in a nucleus even though their charges repel each other.
// have a great day //
Answer:
Strong nuclear force
Explanation:
The neutrons help so the positive force of the protons don’t break up the nucleus.
This is the range of habitats in a region
Answer: species range
Explanation:
A species range is an area where a particular species can be found during its lifetime. Species ranges include areas where individuals or communities may migrate or hibernate.
hopefully this helps
How often should observations be made in a simulation of natural selection??
Answer:
A minimum of 3 observations will produce reproducible results
Explanation:
Often, when simulations are carried out to observe for natural selection, it will be safe to conduct >3 observations to reduce the likelihood of errors. Errors could affect the reproducibility of the results which researchers will not want to compromise. The models ( for example the physical natural selection simulation or the virtual natural selection simulation methods) that are used provide for more observations to be made to ensure more accurate results and interpretations are obtained.
Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks. Which of these correctly identifies the two cells described in the table? Your answer: Cell 1 is eukaryotic, and Cell 2 is prokaryotic. Both Cell 1 and Cell 2 are prokaryotic. Cell 1 is prokaryotic, and Cell 2 is eukaryotic.
Answer:
A
Explanation:
Which molecular formula corresponds to this model of a chemical compound? (black = carbon; red = oxygen; white = hydrogen) A ball-and-stick model has two black balls bonded to each other at center, with single-bonded red balls bonded to white balls above left and below right, and double-bonded red balls above right and below left. C2(OH)4 C2H2O4 C2H4O2 C4H2O2
Answer:
C2H2O4
Explanation:
The molecular formula can be derived through the below analysis.
Two black balls (C) bonded to each other at the center = C2
Single-bonded red balls (O) bonded to white balls (H) above left and below right = (OH)2 = O2H2
Double-bonded red balls above right and below left = O2
Adding the three together = C2 + O2H2 + O2 = C2H2O4
The correct answer is C2H2O4
Answer:
b
Explanation:
just took the test on edu 2022
Which correctly lists the three plates that border the Indo-Australian Plate
Answer:
The Indo-Australian Plate includes the majority of the Indian Ocean. It borders the Eurasian Plate in the north, the Antarctic Plate in the south and the Pacific Plate in the east.
Answer:
The answer is A.
Explanation:
Pacific, Eurasian, and African.
A plant tissue made of tubular cells stacked to form structures called tubes.
A. xylem
B. cambium
C. phloem
Answer:
C
Explanation:
Xylem are stronger and thicker tubes than the Phloem, and the Xylem are meant to bring nutrients and water from the roots too the leaves!
Phloem are much smaller, and much more brittle than the Xylem, and they also have a different job. These are meant to take the glucose made from photosynthesis and move it to the rest of the plant. These are made up of tubular cells, creating a vascular system.
what chemical substances must be provided for aerobic respiration to take place inside the cell
Answer:
Oxygen
Explanation:
Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as byproducts. In cellular respiration, glucose and oxygen react to form ATP.
Hope it helps
Which expression is equivalent to y times y times y times z times z times z times z?
Answer:
[tex]y^3z^4[/tex]
Explanation:
[tex]y\times y \times y \times z \times z \times z \times z= y^3z^4[/tex]
Hope this helps!
Answer:
y cubed z supersxript 4 = y^3 . z^4
Explanation:
The human population has experienced unchecked growth for the past 200 years. What does unchecked mean?
A.slow
B.At a steady rate
C.unrestrained
D.dangerous
Quick it is timed
Answer:
D
Explanation:
im pretty sure
Answer:
the answer is B
Explanation:
I took the test
why would CH not form as a result of carbon's interactions with other elements? A:Carbon normally has two covalent bonds. B:Carbon normally has four covalent bonds. C:Carbon cannot bond with hydrogen only.
Answer:
B
Explanation:
Ms,Biswas made me do this mate (PAIN)
Answer:
B - Carbon normally has four covalent bonds.
Explanation:
JUST PICK A BODY OF WATER THAT'S ALL I ASK I CAN"T THINK OF ANY I'M PANICKING. ANY LAKE. OR RIVER. OR BAY. WHATEVER ALL YOU GOTTA DO IS PICK ONE.
Answer:
Gulf of Mexico, Lake Tahoe, Mississippi River, etc. (you can just search it up btw.)
Explanation:
Explain the unique bonding properties of carbon.
Carbon , hence overcomes this difficulty by sharing its four valance electrons with other atoms of carbon or with atoms of other elements.
What do you mean by valence electrons?A valence electron is an electron in the outer shell associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed.
Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table.
Learn more about valence electrons:
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which characteristics of Galapagos finches helped the grants show the results of natural selection
A. color of their feathers
B. the length and shape of their wing
C. The size and shape of their beak
D. the curve of their claws
C is the answer. The people (wife and husband) studied and realized that their beak was unique
Is Vanilla Silk Milk?
Answer:
Yes it is milk.
Explanation:
The main component would be the milk, the other 2 would be silk and vanilla to create the substance! Since vanilla is a main component !! It can be classified as milk !!
Answer: yes vanilla milk is silky
Explanation:
For it to be silky it needs to have
A serving of Silk Vanilla Soymilk has 6.25 grams.
Hope this helps :)
What does it mean when you have a dream and it comes true
Answer:
Read below.
Explanation:
When you have a dream that predicts the future, it is called a mantic dream. Your body senses what's going to happen next in the future. When you go to sleep, your mind tells you that that certain event is going to happen in the future.
Answer:
it's called a deja vu
Explanation:
Its the feeling that you have lived through something already, it can be an action or something you feel you have seen before. ;)
can someone answer this question plz
i will make you brainlist
Answer:
Explanation:
In carbon cycle, carbon is just being recycled from one thing to other. For example, here we can see that green plants are part of carbon cycle because they go through photosynthesis, a process through with plants take in Carbon dioxide. The carbon is then used to make molecules such as carbohydrates and proteins, and are part of structural support to plant cells as well. Now when this organism (the organism could be an animal or plant) dies, the bacteria decomposes the organic matter (the dead body) and through respiration the carbon dioxide is released back into the environment.
Another way carbon recycles is that animals, plants, and microorganisms all respire (breathe out) CO2 thus carbon dioxide is added to the environment.
Answer:
Hi.. Ok lets start with animals.....Animals give out carbon dioxide during the breathing process and obtain oxygen.The carbon dioxide given out by the animals is obtained by green plants which use it on addition to chlorophyll water and light energy to make their own food.When animals die they decompose to form micro organisms...The micro organisms add nutrients to the soil thus promoting the growth of plants.I think it is the foodchain
PLS HELP ME!! HELLO? ANYONE OUT THERE WHO IS A KIND SOUL AND WILL HELP ME? WILL GIVE BRAINLIST!!
Elements are _____.
A. only found on earth
B. subatomic particles with a positive charge
C. substances that are made up of only one type of atom
D. a chemical substance composed of atoms of two or more different types of atoms
Answer:
C
Explanation:
elements are made up of one type of atom. if they contain many atoms then they can be called as compounds.
elements are not subatomic particles . many atoms combine together to form an element.
What did you include in your response? Medications can be tested on cell cultures instead of being injected into patients unnecessarily. Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells. Specific treatments that are shown to fight the growth of cancer cells in the culture can be used on patients. Cultures are safer to use than injections of unneeded medications into patients.
Answer:
The statements are correct.
Explanation:
Cell culture is a technique widely used in molecular biology where cell lines are grown in controlled conditions, thus allowing to make experiments and to test compounds that may result useful to treat diverse diseases, including cancer.
Immortalized cell lines are characterized for their ability to proliferate indefinitely which are derived from oncogenic tissues. In cancer research, these lines are used as models to test different drugs and to study cellular mechanisms associated with cancer progression including, among others, proliferation, invasiveness, vascularization, etc. In addition, the mechanisms associated with the death of cancer cells such as, for instance, apoptosis, may also be studied by using immortalized lines.
Which consumers are carnivores (eat meat)?
Answer:
carnivores (eat meat)
Explanation:
A model of the carbon cycle is shown below.
The Carbon-Oxygen Cycle
combustion
combustion
respiration
volcanic
activity
respiration
photosynthesis
dissolution
degasification
weathering &
erosion
decay &
sedimentation
Which of the following can be determined based on this model?
A.
The atmosphere is the only reservoir on Earth that can store carbon in any form.
B.
Both plants and animals release carbon dioxide into the atmosphere during cellular respiration.
C.
Dead organisms and waste products do not play any role within the carbon cycle.
Factories do not emit any amount of carbon dioxide into the atmosphere.
Answer: The answer would be B
Explanation: All plants and animals release at least some amount of co2 into the atmosphere during cellular respiration
Both plants and animals release carbon dioxide into the atmosphere during cellular respiration can be determined based on the Carbon cycle model. So, the correct option is B.
What is Carbon cycle?The exchange and recycling of carbon in the Earth's biosphere, lithosphere, hydrosphere and atmosphere is known as the carbon cycle. All living things contain the element carbon, which is also an important component of many important compounds such as proteins, lipids, and carbohydrates.
Photosynthesis, respiration, combustion and weathering are just a few of the different processes that make up the carbon cycle. Plants use photosynthesis to take up atmospheric carbon dioxide and convert it into organic molecules. Plants and other organisms then use these molecules as a source of energy.
Therefore, the correct option is B.
Learn more about Carbon cycle, here:
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Which organelles are found only in plant cells and not in animal cells? cell membrane, vacuole cell wall, chloroplasts cell wall, vacuole cell membrane, chloroplasts
Answer:
Cell wall and Chloroplasts
Explanation:
I just studied hope its correct (～￣▽￣)～
Answer:
Cell wall and chloroplast
Explanation:
Plant cells are the fundamental building blocks of plants and they are eukaryotic because of the membrane bound organelles and nucleus also found in Animal cells.
Plant cells organelles are chloroplast and cellwall which is not found in animals.
Chloroplast is an organelle which contain the green pigment use for photosynthesis.
Cell wall is an organelle found in plant cell which contain cellulose, hemicellulose, liginin, pectin , soluble protein and microfibrils. It provide strength and protect the plant against mechanical or osmotic stress.
What is the name given to the process by which pesticides build up in an organism
Answer:
bioaccumulation
Explanation:
This build-up of toxic substances in living organisms is known as bioaccumulation.
Which do you think is better for the environment: paper or plastic
Answer:
I think it is plastic
Explanation:
even though it take 400 years for a paper bag to decompose, people use more plastic.
Answer:
Paper is better for environment
Explanation:
Paper is because it decomposes much more quickly than plastic, and because of that it is less likely to be a source of danger and will not pose a risk to wildlife. Paper is also more recyclable, while plastic can take between 400 and 1,000 years to decompose.
Hope that helps.
Experiment: Water Properties: Why were the results with just water so much different than the trials with the detergent?
Answer:
Explanation:
Water is a universal solvent whose molecule are joined together with a force of attraction. Its surface tension is hidden between bonds. When washing, soap is added for easy penetration of water molecule and to decrease the surface tension. This then allow the water to move freely round the object been washed.
Detergent aid the distribution of water, of water is used alone without the detergent then the surface area of water will not be reduced to all even spread. But, if detergent is added the tension is reduced and a better result is obtained.
