Answer:
During photosynthesis a plant absorbs light energy using the pigment chlorophyll. This allows it to convert carbon dioxide and water into glucose. This glucose is:
transported to the growing parts of the plant for use in respiration
transformed into cellulose, proteins and oils
turned into starch for storage
Therefore, to test if a plant has been photosynthesising, you can test the leaf to see if starch is present.
Which is a non-Mendelian trait?
A. A trait with a very dominant form
B. A trait with two alleles C. A trait with no clearly dominant allele
D. A trait controlled by one gene
A trait with no clearly dominant allele a non mendelian trait.
What is a non mendelian trait?Non-Mendelian traits refer to traits that are not transmitted with dominant and recessive alleles from one gene. from one generation to another. Polygenic traits are examples of non-Mendelian because their alleles are located on more than one gene which give room to more alleles and phenotypes. Examples of polygenic traits are hair color and height.
Therefore, A trait with no clearly dominant allele is a non mendelian trait.
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Answer:
C is right
Explanation:
<3
Which of the following explains how polar molecules form
Answer:
D. Electrons are more attracted to one of the atoms involved in a bond.
Electrons are more attracted to one of the atoms involved in a bond.
How do polar molecules shape?Polar molecules arise while atoms do not percentage electrons similarly in a covalent bond. A dipole bureaucracy, with part of the molecule carrying a slightly positive rate and the other part wearing a slightly bad price. This takes place whilst there may be a distinction among the electronegativity values of each atom.
What is a polar and nonpolar molecule?Polar molecules occur when there may be an electronegativity distinction between the bonded atoms. Nonpolar molecules arise while electrons are shared similarly among atoms of a diatomic molecule or when polar bonds in a bigger molecule cancel each other out.
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Why is reducing caloric intake insufficient for a person to loose weight in a healthy way?
Because there are several factors that determine weight loss or gain and reducing calorific intake is just one of them (for reducing weight loss). Other factors that should be considered is exercise. Doing regular exercise ensures that the metabolic rate of the body is increased so much of the calories are burned even after intake. Having a lower metabolic rate can result to increased weight gain even with low calorie intake.
The diagram shows a section of DNA. What is the arrow labeled X pointing to? adenine thymine cytosine guanine
Answer:
B
Explanation:
Answer:
The answer is B! Thymine!
On the cumulative exam edge 2023
Explanation:
Drag each tile to the correct location on the table. Not all tiles will be used.
SAMSUNG
Identify the relative abundance and descriptions of some of the gases in the atmosphere.
trace gas
required for
photosynthesis
second most
abundant gas in
the atmosphere
incorporated as a
major component of
proteins and DNA
does not
react with other
substances
required for aerobic
cellular respiration
most abundant gas
in the atmosphere
Relative
Gas
Description
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A trace gas, carbon dioxide is necessary for photosynthesis. Nitrogen is the most prevalent gas in the atmosphere and is a key component of proteins and DNA.
Why is photosynthesis so important?
It is important because photosynthetic is the process through which plants use sunlight to change oxygen into carbon dioxide. Animals need oxygen to survive, whereas plants clean the air by taking harmful carbon dioxide out of it.
Why does photosynthesis occur?
The Sun Light energy triggers a chemical reaction that disassembles the water and carbon dioxide molecules and reassembles them to form glucose and oxygen gas. After the sugar is created, the mitochondria convert it into energy.
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14. Which immune cells circulate in the body, providing immunity by producing antibodies?
A. Antigens
B. T-cells
C. Lymph Nodes
D. B-cell
The types of immune cells that circulate in the body and provide immunity by producing antibodies are known as B cells. Thus, the correct option is D.
What is Antibody?An Antibody may be defined as a type of protein that is synthesized by the plasma cells of B lymphocytes in response to specific antigens. It is a Y-shaped molecule with diverse forms.
B lymphocyte is one of the main types of lymphocytes that are classified under white blood cells which are the essential part of an immune system. B cells are further classified into plasma cells and memory cells. Plasma cells are responsible for the formation of antibodies that provides adaptive immunity.
Therefore, the types of immune cells that circulate in the body and provide immunity by producing antibodies are known as B cells. Thus, the correct option is D.
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RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scientific laboratories?
A. RNAi has been used in laboratories to make bacteria more susceptible to antibiotics, but has limited application in eukaryotic cells.
B. RNAi is a powerful tool for degrading mRNA, but because it doesn't degrade other types of RNA, its use is limited.
C. RNAi is observed in nature, but it can't be used in laboratories.
D. RNAi allows scientists to turn off one gene specifically to study its effect.
Answer:
(D). RNAi allows scientists to turn off one gene specifically to study its effect.
Explanation:
RNAi (RNA interference) can be defined as a process, which involves inhibition of gene expression by degrading the targeted mRNA molecules. This technique is widely used in laboratories to study the functions of different genes by targeting them.
For this, a dsRNA molecule is formed having a sequence complementary to target gene and introduced into the cell or organism. This RNA is recognized as exogenous RNA and triggers activation of RNAi pathway.
RNAi pathway leads to a significant decrease in expression of a target gene. Hence, physiological role of the targeted gene product can be check by studying the effect of decrease in its expression.
Thus, the correct answer is option (D).
Answer:
The Answer is option D
Explanation:
Which are units used to express volume? (high school btw not middle school)
A river has different populations of lampreys and paddlefish. The paddlefish feed on zooplankton, while the lampreys feed on the paddlefis
Humans living around the river hunt the paddlefish. What will happen to the ecosystem if the paddlefish are hunted in excess?
A.
The population of lamprey will decrease, while the population of paddlefish will increase
B.
The population of paddlefish will decrease, while the population of zooplankton will increase.
c.
The population of paddlefish will increase, while the population of zooplankton will decrease
D.
The population of lamprey will increase, while the population of zooplankton will decrease
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Next
tum. All rights reserved
Answer:
B
Explanation:
Because nothing is eating the zooplankton then they will increase and the paddle fish will decrease because they are being hunted... Hope this helps!!!
Answer:
Option B, The population of paddlefish will decrease, while the population of zooplankton will increase.
Explanation:
Since, it is given that humans living around the river started hunting the paddlefish thus their population will definitely decrease. As the number of paddlefish decreases the extent to which they feed on zooplanktons will also decrease. Thus, the population of zooplanktons will increase with no or limited disturbance.
Population of lamprey which feed on paddlefish will start decreasing as their food i.e paddlefish has started declining.
Thus, option B is the correct answer.
how does mitochondria and lysosomes and nucleus and golgi boby work together to provide nutrition and energy for the cell ?
Answer:
Ribosomes, the endoplasmic reticulum and the Golgi apparatus are related to each other through their involvement in protein synthesis and transport. ... The primary role of the Golgi apparatus is to modify the proteins and encase them into vesicles. From here they are transported to the various parts of the cell.
Explanation:
if there is no oxygen around the sun then how does the sun burn is the sun really burning can the process be called combustion
The Sun is not burning through combustion with oxygen but operates through nuclear fusion, which allows it to emit energy for billions of years, unlike combustion which would only sustain it for a very short period.
The Sun does not burn in the way that we think of materials burning on Earth, such as wood or coal. In a combustion reaction, a substance reacts with oxygen to release energy in the form of heat and light. However, the Sun operates through a different process known as nuclear fusion, where hydrogen nuclei combine to form helium, releasing immense amounts of energy in the process.
Assuming the Sun was made entirely of oxygen and combustion was possible, when an oxygen atom combusts, it would release an electron-volt of energy. But given the chemical bond energy typical of combustion reactions (about 1 eV), the Sun would have a very short lifespan, far shorter than what we observe. Even if the Sun were made of the best anthracite coal and oxygen, it could only sustain its current level of heat output for less than 1500 years given the huge amount of energy it emits.
Therefore, it is not combustion that powers the Sun, but rather the process of nuclear fusion, which is capable of producing the Sun's energy for billions of years.
Energy is converted from one form to another in cells. What role does ATP play in this process?
Cells use ATP to harvest energy from sunlight.
Cells convert energy stored in ATP into nutrients.
Cells convert energy stored in ATP into kinetic energy.
Cells use ATP to produce nutrients such as glucose.
Answer:
Cells convert energy stored in ATP into kinetic energy. - third choice
Answer: Option C
Explanation:
The energy that is stored in ATP can be used to derive the various processes of the body.
The third bond in the ATP is loosely bonded with the molecules which is broken down to allow more stronger bonds to form and provide energy for the cellular processes.
Through the process of cellular respiration the bonds are broken releasing the potential energy of the molecules in the form of kinetic energy that is used by the cells to do work.
Why does the potential energy and the kinetic energy change when the skateboarder is at the top or the bottom of the hill why do you think this change occurs
Answer:
Potential energy is gaining all the way to the top of the hill due to the increase of height (gravitational pull) on the skateboarder. At the top of the hill potential energy will reach its highest point. Then going down kinetic energy increases as potential energy decreases.
Explanation:
Answer : The potential energy and kinetic energy are always in flux. At the top of the hill, potential energy is at its highest and kinetic energy is at its lowest because the skateboarder stops for just a moment before being pulled down the hill by the force of gravity. At the bottom of the hill, kinetic energy is the highest because the skateboarder reaches maximum speed
Explanation: PLATO SAMPLE ANSWER
Look at the ocean system below.
plankton → shrimp → salmon → humans
What will most likely happen if the plankton population decreases in this
ocean system?
Answer:
All the other animals that depend on it will go down
Explanation:
Then all the animals will be fighting over food and then it will become survival of the fittest
Answer:
Shrimp will have more difficulty finding food.
Explanation:
just did it
How is most of the electricity in the United States generated?
Wich cell of the dermal tissue of plants prevents water loss and control gas echange
Answer:
The Guard Cells is your answer.
Explanation:
Hope i helped you!
What is dictyosome????
Answer:are stacks of flap,membrane bound cavities that together compromise the Golgi Apparatus.
Explanation:
Answer:
Dictyosome are cell organelles present in plant cells and perform functions similar to golgi apparatus present in animal cells.
Explanation:
Dictyosome are flat, membranous cavities also called cisternae. It allows formation of plate during cell division. Dictyosome in plant cells are freely present in cytoplasm.
Select which of the following have an impact on the Earth's climate:
Humans
Plants
Earth's orbit
All Life
Ice composition
Answer:
All life
Explanation:
Just trust me. I am too tired to explain this right now.
which of these substances does not protect against invaders in the nonspecific immune response
a- stomach acid
b- antigens
c- digestive enzymes
d- lysozome
B: Antigens
Explanation: Antigens itself are the invaders that causes an infection or a disease in living organism. They do not protect against invaders in non-specific response as they themselves are the ones who are invading the body.
Digestive enzymes are the enzymes that act on a particular substrate for its action at a particular PH.
Stomach acid is the hydrochloric acid that keeps the PH of the stomach low and prevents the growth of unwanted pathogens.
Lysosomes have digestive enzymes in it. It performs the process of phagocytosis.
The element is found in smaller quantities in the body but in a wider variety of places including ATP molecules, DNA, bones, and teeth. What is it
Answer:
Phosphate
Explanation:
Phosphorus is the element that makes up less than 1 percent weight of a human's body. However it is present in the ATP, DNA, teeth and bones in excessive quantity. In the DNA molecule, phosphorus is present in the form of units phosphate molecules joined with nitrogenous bases and sugar groups in a successive fashion. Moreover, there is energy currency of a cell called ATP that is important to perform normal day to day activities. it also contains phosphorus in the form of phosphate.Moreover, bones and teeth are made up of Calcium Phosphate molecules. Around 85% of the phosphorus found in phosphate is present in the bones. The remaining amount of it is phosphorus is present in the tissues of all body parts. In the body organs, kidneys help control the amount of phosphate in the blood.Hope it helps!
Answer:
Phosphorus
Explanation:
Phosphorus is the element that is present in smaller quantity in the body, but large quantity of it is present in bones, teeth, DNA and ATP.
In DNA it is present as phosphate backbone, ATP molecules use phosphate group to generate energy, teeth and bones both need phosphorus in addition to calcium and magnesium for strength.
Genetic drift in a population affects the gene pool in which of the following ways?
-decrease in genetic variation
-increase in genetic variation
-increased mutations
-decreased gene flow
?
O
O
O
O
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:
:
which statement best describes the relationship between photosynthesis and cellular respiration
Answer:
There are no options but generally photosynthesis uses light to excite electrons and utilising Chlorophyll then uses this energy to convert CO2 to glucose.
Explanation:
Why do marine scientists need to understand longitude and latitude?
So they know where they're going
14. What are vaccines for influenza made from?
antibodies to the virus
weakened viruses
parts or products of a virus
dead, whole viruses
ells
Answer:
Option D
Explanation:
In the general process of producing vaccines for any viral diseases, the viruses are cultivated in any carrier animal such as hen and then these virus fluids are extracted from the body of the test species. The virus in the virus solutions are inactivated (killed) and the virus solution i.e antigen is cleaned , purified and tested to make vaccines for influenza virus.
Hence, option D is correct
Final answer:
Influenza vaccines are made from live weakened viruses, killed or inactivated viruses, or molecular subunits of the virus to build immunity and prevent the flu. They typically provoke an immune response without causing disease.
Explanation:
Vaccines for Influenza
Vaccines for influenza are primarily designed for prevention and are an essential tool in controlling viral diseases by building immunity. The influenza vaccines can be made from several different materials, including live weakened viruses, killed or inactivated viruses, and molecular subunits of the virus. These different types of vaccines work by stimulating the body's immune system to recognize and fight off the virus should the person become exposed to the actual virus in the future.
Influenza vaccines that use live weakened viruses are often called live attenuated influenza vaccines (LAIV). They contain a version of the virus that has been modified so that it cannot cause illness in healthy individuals. However, there's a very low risk that this type of vaccine could revert back to a harmful form. The inactivated influenza vaccines (IIV) contain viruses that have been killed and cannot cause the flu. Subunit vaccines, which include recombinant influenza vaccines (RIV), contain only pieces of the flu virus — generally protein subunits — that are enough to provoke a protective immune response without risking the introduction of live or killed viruses.
One example of vaccine production for flu includes growing influenza virus particles in chicken eggs, which are then harvested and chemically treated to render them noninfectious. These particles are purified and used to make the vaccine, which is administered by injection.
A machine can never be 100% efficient because some work is always lost due to
Answer:
Friction
Explanation:
The efficiency of a machine depends upon the percentage ratio of output work to the input work. More the difference between the input and output work, lesser will be the efficiency of the machine. In real machines, the output is always less than the input because a lot of work is consumed against friction, resulting in reduced output.
The formula for efficiency is:
Efficiency= ( Output work/Input work) x 100%
Since the output will always be lesser than the input, the ratio of output/input will always be lesser than 1 and, therefore, the efficiency will always be lesser than 100%
Answer:
FRICTION
Explanation:
Which of the following organs controls body temperature, water level, and carbon dioxide level? A. Lungs B. Pancreas C. Muscles D. Brain
Answer:
Pancreas
Explanation:
The pancreas controls body temperature, water level, and carbon dioxide level.
What principal organ structures are involved in preserving your temperature?The cardiovascular, integumentary, breathing and muscular systems work collectively to help the frame hold a solid inner temperature. If frame temperature rises, blood vessels in the pores and skin dilate, permitting more blood to go with the flow near the skin's floor.
What organ gadget is responsible for temperature manipulation?Hypothalamus is a segment of your mind that controls thermoregulation. while it senses your internal temperature turning too low or excessive, it sends indicators in your muscle groups, organs, glands, and worrying machine.
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Which of the following is the best example of a pioneer species?
A. lichens growing on rocks after a volcanic eruption
B. grasses growing after a forest fire
c. oak trees replacing pine trees in a forest
D. small mammals moving into a grassland
These are two metamorphic rocks. Which statement about the rocks is accurate? The rock on the right is foliated. The rock on the left formed from granite. The rock on the left is formed from cooled magma. The rock on the right has randomly arranged grains.
Answer:
The rock on the right is foliated.
Explanation:
From the look, we can easily name the two rocks. These rocks are common metamorphic rocks. The rock on the right is a slate while the one on the left is quartzite.
From close observation, the slate is foliated and has a uniquely layered pattern. Foliation is a leaf-like appearance of metamorphic rocks and it is a result of metamorphic changes in a rock.
The protolith of quartzite is mostly sandstones which is a sedimentary rock.
The protolith of slate is also a sedimentary rock which are fined grained such as mudstone.
Answer:
answer (A)
Explanation:
Pleaseeeeeeee help......
The YELLOW arrows in the diagram point to what?
A. The templates for new DNA strands
B. The new DNA strands
C. The location of the RNA
D. The location of the hydrogen bonds
The location of the hydrogen bonds.