Mitosis is when the cell begins to divide and the cell membrane and the cytoplasm split apart and the chromesomes that act as a nuclei get replaced and a nucleus is formed in 2 identical copies of a diploid cell (daughter cells )
Answer:Mitosis includes several steps that occur after the DNA has been copied but before the cytoplasm is divided.
Explanation:It cant break apart then copy the DNA.That does not make sense.
what molecules are used to digest the starch
an enzyme in the saliva and pancreatic juice breaks the starch into molecules called maltose; then an enzyme in the lining of the small intestine (maltase) splits the maltose into glucose molecules that can be absorbed into the blood.
Is mars sustainable for humanity to live on It?
It is said Mars use to be. But now Mars has dried up and has no air and is not sustainable for human life.
As of now, no. However, we can set up base with equipment from earth that allows us to live in mars, but we cannot live in it like it is earth.
if your corpus collosum were severed,could your right postcentral gyrus know what your left hand was doing ?why or why not
No.
This is because your corpus collosum is the brand of nerve fibers that join the two hemisphere of your brain, if it was severed, your post central gyrus would not know what your left hand was doing because the corpus collosum is part of the connection that helps your brain register the information.
If energy is need to move materials into or out the cell, what is mostly likely occurring? A) Active transport B) Osmosis C) Passive transport D) Diffiusion
Active transport is mostly likely occurring if energy is needed to move materials into or out the cell.
Active transport requires an expenditure of energy to transport materials from one side of the membrane to the other against a concentration gradient and is limited by the number of transporter proteins present.
That is to say, it is a transport that is carried out against the gradient, be it concentration or electrical and, consequently, energy expenditure in the form of ATP will be required.
Active transport is carried out by means of pumps and also presents forms of monotransport, cotransport and countertransport.It has the same specificity and saturability characteristics as facilitated diffusion, although it differs from it because it is carried out against the electrochemical gradient.Therefore, we can conclude that active transport is mostly likely occurring if energy is needed to move materials into or out the cell.
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When energy is required to move substances into or out of the cell, the process involved is likely active transport, where ATP is used to move substances against their concentration gradient.
If energy is needed to move materials into or out of the cell, what is most likely occurring is active transport. Active transport is a process by which substances are moved across the cell membrane against their concentration gradient, which requires energy from the cell's ATP. This is quite different from osmosis, passive transport, or diffusion, where substances move along the concentration gradient and do not require cellular energy.
Active transport can be seen in scenarios where the cell must intake or expel molecules or ions to maintain proper concentrations intra and extracellularly, irrespective of the direction of the natural concentration gradient.
In green leaves, light-absorbing compounds called pigments are made of
Chlorophyll is an orpiment that gives plants their green color.
Chlorophyll a and b are the major green pigments in leaves that absorb light, specifically in violet/blue and orange/red wavelengths for photosynthesis, while reflecting green light, which gives leaves their green color.
Explanation:In green leaves, the light-absorbing compounds are known as pigments. These pigments, specifically chlorophyll a and chlorophyll b, are located in the organized structures called chloroplasts. Chlorophyll is a type of porphyrin molecule with a conjugated bonding structure, consisting of alternating single and double carbon-carbon bonds, which allows it to efficiently absorb light energy for photosynthesis. This capability enables these molecules to absorb light in the violet/blue and orange/red wavelengths, while green light is reflected, giving leaves their characteristic color. Apart from chlorophyll, plants also contain other pigments like carotenoids, which can absorb different wavelengths of light and contribute to the plant's ability to perform photosynthesis under various light conditions.
The tendency of objects moving large distances on Earth's surface to bend to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is due to
The rightward deflection in the Northern Hemisphere and leftward deflection in the Southern Hemisphere of moving objects like wind and ocean currents is caused by the Coriolis effect, due to the Earth's rotation.
The tendency of objects moving large distances on Earth's surface to bend to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is due to the Coriolis effect. This phenomenon occurs because the Earth is rotating. As wind or ocean currents move, the Earth spins underneath them. This causes freely moving objects to seem to move in a curve relative to the surface of the Earth. For large-scale motions, such as wind patterns, the Coriolis effect plays a significant role, causing deflection of the direction of surface currents and affecting the formation of cyclonic weather systems. In simpler terms, when an object is moving north or south, it appears to move in a curve because the Earth is rotating beneath it. Objects moving toward the equator are deflected westward, while those moving toward the poles are deflected eastward.
Please help me with question 8
I think the answer would be dessert
(if i get it wrong im really sorry)
How did the Sedimentary rock MOST LIKELY form?
(Pick from the answer choices above please)
A.By sand and other materials being deposited and hardening over time.
If north is straight up on a 2-dimensional graph, where would a coordinate point east and south of the reference point be located?
A. upwards to the left
B. upwards to the right
C. downwards to the left
D. downwards to the right
I believe its B. Upwards to the right
Which is a drawback to the use of oil shale to produce energy? Oil shale can be mined only in arid regions. Processing, mining, and waste disposal are expensive. Most of the world’s oil shale occurs in politically unstable countries. Oil shale occurs only in areas with plentiful water resources for processing.
The answer is; Oil shale occurs only in areas with plentiful water resources for processing.
The refinement of oil shale requires a lot of water. This is used to quench the products of retorting and pyrolysis and also reduce dust. The water used becomes heavily polluted and has to be treated before discharge, otherwise, it will be the cause of a major environmental disaster to the local areas.
Answer is: Processing, mining, and waste disposal are expensive.
Is public speaking an internal or external stimulus?
Stimuli (usually) activate one or more of the senses. Stimuli can be internal as well as external. Internal stimuli signal the state of the body. ... Some examples of internal stimuli: the feeling you describe as hunger, the churning sensation you experience when anxious or afraid.
16. __________ indicates a BAL of .15 or higher.
A. Slurred speech and a reduced ability to maintain lane position
B. Near complete loss of muscle control
C. Impaired memory and a lack of alertness
D. Reduced physical coordination and increased reaction time
The answer is C. hope this helps
Answer:
B. near complete loss of muscle control
Explanation:
In 1952 Hershey and chase conducted a series of experiments indicating that DNA was the physical carrier of heredity True or False ?
Answer:
TRUE
Explanation:
In 1952, Alfred Hershey and Martha Chase conducted a research that came to the conclusion that DNA is the basis of hereditary genetic material. This landmark of science became known as the Hershey-Chase experiment and consisted of an experiment called "blender experiment" which proved that it is DNA - not protein - that is responsible for the transmission of genetic material, contrary to the scientific consensus of the time. The experiment won the Nobel Prize in 1969.
what happens as a river gets older apex
The gradient smooth ens...the waterfalls and the rapids gradually disappears
Answer: It has low gradient and low erosive energy
Explanation:
A river can be defined as the natural flow of water course, which is usually a source of water. This water flows towards the another river, ocean or sea.
A older river usually has very low gradient and low erosive energy. They also have flood plains.
Example of older rivers are : Yellow, Nile, lower Ganges, et cetera.
true or false: water is an ionic compound
water is about 33% ionic.
But no. Its not and ionic compound
No water is a polar compound
Where does the Calvin cycle take place
This process is fueled by, and dependent on, ATP and NADPH from the light reactions. Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).
Answer:
stroma of the chloroplast
Explanation:
What would chromosomes be part of a school ?like if the school was a cell what would chromosomes be?
In every school you have a transcript that stores information. The chromosomes in a cell also store information. So, in a way, our school transcript is like a chromosome in a cell. Hope I helped!
Chromosomes in a school cell would be similar to a library, as both store important information for the functioning of the cell and the school.
Explanation:In a cell, the chromosomes would be similar to the school's library. Just as the chromosomes contain genetic information in a cell, the library contains information in the form of books and documents in a school. Both chromosomes and the library store important information that is necessary for the functioning of the cell and the school.
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After a strain of bacterial cells is exposed to a chemical mutagen, only 30% of the cells produce new colonies that continue to grow. Which of the following can be concluded?
A. Some cells underwent advantageous mutations
B. Some cells underwent neutral mutations
C. Some cells underwent lethal mutations
D. Some cells underwent deleterious mutations
The answer is; A
Most of the bacteria cells were affected by the mutagen that disrupted their DNA through mutations. Most of the mutations were deleterious/lethal/disadvantageous leading to the death of a higher proportion of the bacterial colony. However, of the many mutations caused by the mutagen, some were advantageous – meaning they probably protected the cells from the mutagen. These were able to continue reproducing and formed a new mutant colony.
We know that animals can be separated into two big groups: vertebrates and invertebrates. An example of each would be a horse and a horse fly. Even though these animals are very different structurally, they have several things in common. Both animals MUST have a method for ____________ because they are both classified as heterotrophs.
A) moving
B) using oxygen
C) getting food
D) reproduction
The answer is C since heterotroph means they don't have a way of making food
The right answer is C) getting food.
A heterotrophic characterizes an organism that provides for its subsistence by assimilating organic substances (from external sources) and incapable of producing these organic substances from mineral matter. Its carbon source is organic matter because a heterotroph can not fix carbon. By definition, heterotroph is opposed to autotroph.
What are the subcategories of protein?
Protein can be categorized into two types:
complete and incomplete proteins.
Proteins are made up of smaller units, called amino acids.
Complete proteins contain all of the amino acids your body needs and include meat, fish, poultry, dairy, and soy products.
proteins are made up of small units of molecules known as amino acids. The amino acids are categorized as essential and nonessential where the essential ones cannot be synthesized in our body and should be taken through diet. The two subcategories of protein are complete protein and incomplete protein.
Complete protein provides all the nine essential acids that are needed for the body.
Incomplete proteins lacks one or more essential amino acids that are required by the body.
in this picture, which letter represents the geosphere
A,B,C, D?
Answer:: it's both C and D
Explanation:
What are balanced chemical equations
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products
Final answer:
A balanced chemical equation equals the number of each type of atom on both sides, maintaining the law of conservation of matter and enabling stoichiometric calculations in chemical reactions.
Explanation:
A balanced chemical equation is a symbolic representation of a chemical reaction where the number of atoms for each element is equal on both the reactant and product sides, reflecting the law of conservation of matter. This balance is achieved by placing appropriate coefficients in front of the chemical formulas. For example, when carbon reacts with hydrogen gas to form methane (CH4), the balanced chemical equation would be: C (s) + 2 H2 (g) → CH4 (g). Here, we have one carbon atom on both sides and four hydrogen atoms on both sides, satisfying the balance.
The coefficients in a balanced equation give the relative amounts of reactants and products and are used to calculate stoichiometry, which is the measure of the quantitative relationships between the amounts of substances involved in the reaction. Balanced equations provide critical information for chemists to predict the amounts of products formed or reactants required in a given chemical reaction. Thus, writing proper balanced reactions is an essential skill in chemistry.
20 POINTS!!!!!!
Describe the chemical and biological processes that take place during photosynthesis and cellular respiration.
Explain the process of natural selection:
give specific examples.
Natural Selection is: the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
An example of this is our appendix. We no longer use our appendix because food nowadays is softer than what our ancestors used to eat.
Our ancestors could quickly digest (through their appendix) tree barks because they ate them frequently versus now we don't even use them at all
How can a mutation in a somatic cell cause a cancer? In your answer, name a cause that can increase the risk of cancer-causing mutations.
Answer:
Mutation is basically a process in which a damage or change occurs in the nucleotide sequence of DNA by some mistake.
Mutations can be lethal, cancer causing or even harmless depending on the area of DNA they have damaged.
The cancer causing mutations are those which do not let the cell to divide in a controllable fashion.
Mechanism of cancer causing mutation:
Basically what happens during cancerous mutations in somatic cells, there are some genes which have the responsibility of proof reading the cell-division process or cell cycle. These genes are called proto-oncogenes but when a mutation occurs in these genes they are unable to regulate the cell cycle properly. Due to these mutations, the proto-oncogenes are changed into oncogenes or cancenrous genes and lead to the development of cancers. What happens after that, the cells divide in an uncontrollable fashion.The effect spreads and soon there is mass of rapidly growing and dividing cells called a tumor, or cancer, However, since they are somatic mutations, they are not transferred to next offspring.Causes of Somatic mutations:
Studies suggest that there can be several causes of mutations like smoking, ionizing radiations, physical or chemical mutagens etc. But here our focus will be UV rays as agents of mutations and cancers. Sitting for long hours under sunlight without using a sunscreen can enhance the risk of cancer. Let us see how:The UV rays have been associated to sometimes cause two adjacent pyrimidines (thymines, TT, or cytosines, CC) between bases of DNA in such a way that they become linked covalently. These bases form cyclic rings and create an intermediate that is normally nor present in our DNA. This type of mutation causes a gap in DNA and prevents normal and perfect replication of DNA and cell which can lead to even cancer. You can see attached figure for better understanding of the formation of thymine dimers.Hope it help!
A porcupine pokes it predators with the help of its quills. What type of defense is this?
A.) camouflage
B.) mimicry
C.) social defense
D.) physical defense
E.) chemical defense
d, Physical defence as poking a predator is physical. Please vote my answer as brainliest!!!
Answer:
physical defense
Explanation:
got it right on edmentum
Students research unicellular, prokaryotic organisms that live in harsh environments such as volcanic hot springs, brine pools, and anaerobic black organic mud. Which of these groups are the students most likely researching?
f. Protista
g. Archaebacteria
h. Plantae
j. Eubacteria
What are the roles of the following in the carbon cycle organisms such as producers consumers and decomposers
The carbon cycle is the biogeochemical cycle, in which the plants (producers) take up carbon from air as carbon dioxide and convert it into glucose and other carbon containing compound, which is used by animals (consumers) in cellular respiration and produce carbon dioxide. The produced carbon dioxide is transferred back to the air. The organic material of the plants and the animals are buried in soil and their decomposition occurs, which is caused by the decomposition of the organic material into simple compounds by the decomposers. The decomposition causes the addition of the carbon in the soil.
Rocks above a fault plane
What is the question being asked?
Changes in which of the following is the primary driving force behind mechanical weathering? A. acidity B. salinity C. pressure D. temperature
Answer:
D. temperature
Explanation:
Temperature is the main factor that brings about mechanical weathering. Mechanical weathering is the natural and physical breaking down of rocks from big ones to little ones. There are many examples of mechanical weathering and the common factor is temperature:
Frost Wedging - water expands as it freezes to ice increasing any crevices in a rock as it happens over and over, weakening the road
Thermal Expansion and Contraction - due to high day temperatures and low night temperatures. This causes cracks as stress, from temperature swings, is released.