Which two seasons is Earth experiencing at positions "A" and "C" in its orbit around the Sun?
winter and summer
spring and summer
spring and autumn
winter and autumin

Answer: a and c

Explanation: You don't need to wait on the government to make laws to be able to be energy efficient, nor do you have to stop using all forms of energy altogether.

The nucleus is the  structure that directs the cell's activities of living organisms.

This is an organelle which is usually membrane bound and contains the chromosomes.

It is involved in the control of the synthesis of proteins thereby aiding the directing of the cell activities.

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Answer:

B

Explanation:

Making observations: Bread, when kept in the open for a long time, shows the presence of mold

Asking questions: What causes mold growth on bread?

Constructing hypotheses: Changes in temperature may affect the growth of mold on bread

Testing hypothesis: Keep the bread in different locations, changing the temperature at each location

Result analysis and conclusion: Increased temperature leads to mold growth on bread

Result communication: Make a presentation of the data and explain it to the class.

The scientific method is a rational order of steps through which scientific knowledge is obtained. The steps are:

Observations have to do with making perceptions about events. Next is asking questions about why those events are the way they are.

Guesses are made to answer the questions raised. This represents the hypothesis stage.

Next is to test the correctness of the hypothesis using suitable experiments.

Results from the experiment are analyzed using relevant statistical analysis and conclusions are made from there.

The outcome of the whole procedure is then communicated to the scientific world.

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The conclusion is that water has moved from the beaker into the bag by osmosis because concentration of solute in the beaker is lower than that in the bag.

Osmosis is the movement of water molecules across a semipermeable membrane from a solution of low solute concentration to one of high solute concentration.

The concentration of solute in the beaker is lower than that in the bag, therefore, water will move from the beaker into the bag by osmosis.

In conclusion, the solution in the beaker is of lower solute concentration than in the bag.

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Excel can be used to organize finances and find out the future trends of income and expenditure.

First you have to structure your personal budget spreadsheet. Then organize Your Budget using shading method. After that use Excel formulas to project your account balances into the Future. Calculate Payments and eliminate your debt. Excel sheet has many formulas on it which make the calculations better and very quick. This excel sheet has high importance in the budget making and organize finance.

So we can conclude that excel can be used to organize finances and find out the future trends of income and expenditure.

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Answer:

C

Explanation:

because they grow more than others time

Microorganisms produce enzymes in order to break the macromolecules such as proteins and starches.

Microbial enzyme production occur to degrade natural polymers such as proteins, starches, or pectin. The microorganisms secrete the enzymes in order to extract nutrients from it.

So we can conclude that Microorganisms produce enzymes in order to break the macromolecules such as proteins and starches.

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Answer:

Synthesize energy

Tissue repair and maintenance

Explanation:

Mitosis is a stage in the cell cycle where the produced DNA is separated and two new cells are generated with the equal number of DNA and type of chromosomes as the parent nucleus.

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Answer: The main purposes of mitosis are  Organism growth and tissue repair and maintenance.

Explanation: MITOSIS is the step of cell division in cell cycle. Cell cycle contains G1 S G2 and M phase. During mitosis  a cell replicates its chromosome and segregates them to produce two identical daughter nuclei, which after undergoing cytokinesis produces two identical daughter cells. mitosis is often called as equational division.

Mitosis do not control metabolism nor it synthesize energy.

MITOSIS produces two identical daughter cells which are identical to their parents, so it cannot cause genetic diversity.

mitosis helps organism to grow in size and tissue repair and maintenance by producing new cells identical to each other.

gametes are not produced by mitosis they are produced by meiosis that is reductional division.

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These changes best illustrate the process of plants.

The kingdom Plantae contains eukaryotes that are mostly photosynthetic. Algae and fungi were once included in the plant kingdom, which historically included all other living creatures save animals. However, prokaryotes, fungi, and some types of algae are not included in any modern definitions of the Plantae.

Plants are essential to the ecology because they help with the nitrogen cycle, prevent soil erosion, and participate in the water cycle. Although they also create oxygen, plants are a significant source of food. For humans to exist, it is essential that plants flourish.

One of the simplest methods to enhance the environment and enhance your surroundings is to plant a tree. Plants help to prevent soil erosion by filtering contaminants, absorbing carbon dioxide, and releasing oxygen. It will also assist to lessen your carbon footprint if you plant a few trees.

hence, The farmer ceased preserving the land because plants grew over time.

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atleast 1,000 times or more.

The contraction will increase. The first option is the correct option.

It is an organ that helps to excrete excess water from the body of some protozoans such as paramecium.

The more excess water present in the organism, the more the contractile vacuole contracts to get rid of the water.

With distilled water, more water will enter the cell and this excess water will need to be gotten rid of. Thus, the contraction rate will increase.

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Answer:

A

Explanation:

Answer

For a mitocondria.

The hydrogen ion reservoir is located in the matrix and ATP is synthesized in the inner mitochondrial membrane.

The correct option is (c). We are supposed to be located in the north pole. This is due to Arctic circle phenomenon.

What is Arctic circle phenomenon?

Arctic circle phenomenon means that the sun does not set above this latitude during the summer months. Arctic circle is an imaginary line. North pole of the Arctic circle faces the periods of constant sunshine mainly during the summer months of june, july and august. This occurs due to the fact that Earth is tilted at its axis by 23 degress and during its rotation in summer months it's North pole gets aligned towards our star. For example, northmost parts of Norway.

That's why the Sun did not set during an entire 24 hour period of time during summer months of june,july and august.

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R, S, and T always have the same percentage composition, while X, Y, and Z always have the same percentage composition. Chargaff's rule is then a viable theory that can be used in this situation.

R + S + T = X + Y + Z

= 1:1

Thus, the nucleic acid will contain six base pairs where bonds are formed between RX, SY and TZ.

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The genetic code is called non-overlapping because adjacent codons can not overlap, whereas in this case, the code is overlapping.

The genetic code does not overlap because the same nucleotide in the sequence cannot be used to encode two different codons.

In genetics, overlapping refers to a feature of the genetic code associated with how this nucleotide code is read.

In conclusion, the genetic code in this case is overlapping.

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The process likely to be occurring in the plant's roots will be nitrogen fixation.

It is a process whereby atmospheric nitrogen is converted to usable forms of nitrogen in the soil.

Nitrogen fixation takes place in the root nodules of leguminous plants in association with some symbiotic bacteria.

Thus, the only process that could be happening in the plant's root is nitrogen fixation.

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The role of the hypothalamus and the adrenal glands is  The hypothalamus stimulates corticotropin-releasing hormone (CRH) that stimulates the pituitary gland to perspire adrenocorticotropin hormone (ACTH). ACTH then prompts the adrenal glands to make and release cortisol hormones into the blood.

Adrenal glands are endocrine glands found on top of your kidneys. They produce many essential hormones, including cortisol, aldosterone and adrenaline. The adrenal hormones help control several bodily functions including metabolism, blood pressure and your body's reaction to stress.

hypothalamus, a system deep in your brain, acts as your body's smart control coordinating center. Its main role is to keep your body in a stable state called homeostasis.

It does its job by directly influencing your autonomic nervous system or by controlling hormones.

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Most flowers are bright in color because it is attractive to pollinators.

An adaptation is any phenotypic trait that confers an evolutionary advantage to an individual.

Most flowers are bright in color because it is attractive to pollinators, which is required to transport pollen to other flowers and thus increase the genetic variation in the plant population.

In conclusion, flowers are bright in color to attract pollinators.

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Answer:

A.) NO₃⁻

Explanation:

NO₃⁻ = nitrate

NO₂⁻ = nitrite

NH₃ = ammonia

N₂ = nitrogen (nitrogen naturally exists as a diatomic molecule)

Answer:

The best treatment for specific phobias is a form of psychotherapy called exposure therapy. Sometimes your doctor may also recommend other therapies or medication. Understanding the cause of a phobia is actually less important than focusing on how to treat the avoidance behavior that has developed over time

Explanation:

The disorder that most fits the patient's symptoms is a bipolar disorder. The correct option is C.

Bipolar people have episodes of severe depression as well as episodes of mania, which include overwhelming joy, excitement, or happiness, enormous energy, a reduced need for sleep, and reduced inhibitions. Bipolar disorder is a highly individual experience.

The symptoms of bipolar disorder are frequently triggered by a stressful circumstance or situation. A relationship breakdown is an example of a stressful trigger. Abuse can be physical, intimate, or emotional.

Bipolar disorder is characterized by extreme mood swings that are unpredictable and frequently disrupt daily functioning.

According to Dr. Gonzelez's psychiatric patient, she stayed up for three days last week writing because she felt incredibly energetic and creative.

She arrived at her therapy session exhausted, having not showered or changed clothes in several days; the disorder that best fits the patient's symptoms is a bipolar disorder.

Thus, the correct option is C.

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statocytes, organelles do plants have in their roots that helps them to sense gravity, correct answer is B.

what are statocytes ?

In higher plants, statocytes are the cells which sense gravity. They contain amyloplasts-statoliths, amyloplastic organelles which are filled by starch or sediment at the bottom of the cells. Coleoptiles, shoots, and inflorescence stems all have an elongating area that really is home to statocytes.

how do they help in sensing gravity ?

When the plant is reoriented in the gravity field, the starch-filled plastids (also known as statoliths) in the statocytes, that are highly polarized cells, fall to the physical bottom.

Hence, statocytes help in sensing gravity.

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Answer: The phloem tissue layer

Explanation: The phloem tissue of a plant is one of the vascular tissues of higher plants responsible for the conduction or transportation of photo-synthetically manufactured food (usually in the form of sugar) round the body of the plant to the various tissues and organs that require it.

The tissue moves food materials from their source of manufacture, usually the leaf, to other parts of the plant. Hence, in order to extract the syrup from the maple tree, the phloem layer must be tapped into.

Answer:

The day in Earth's orbit when sunlight and darkness are of equal lengths

The day in Earth's orbit that marks the beginning of spring or autumn

Explanation:

A proton gradient is an important part of both photosynthesis and cellular respiration because couple the favorable flow of H+ to transport specific metabolites into and out of organelles.

The gradient is sometimes called the proton-motive and can be thought of as a form of energy, force and force in a battery. Like other ions, protons are not able to cross directly through the phospholipid bilayer of the membrane, as the interior of the membrane is hydrophobic.

The proton gradient generated by this manipulation provided a driving force for ATP synthesis in the absence of light. This confirms the chemiosmotic theory, where a chemical potential across the membrane can provide energy for ATP synthesis.

The proton gradient produced by pumping protons during the electron transport chain is used to synthesize ATP.

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A test cross must be performed to ascertain this plant's genotype. Yellow and green peas are the anticipated phenotypes of the progeny.

To ascertain whether a progeny is homozygous or heterozygous for a given trait, an F1 progeny is crossed with a double (homozygous) recessive parental progeny (green pea). This is referred to as a test cross.

All of the hybrid's offspring will exhibit the dominant (yellow) phenotype if the mother is homozygous (YY) dominant.

Mother  yellow pea (YY)  x   green pea (yy)   - P generation

                            Y                            y             - Gamete

                          Yy (yellow) , Yy (yellow)         -F1 generation

If the mother is heterozygous dominant(Yy), then half of the offspring will exhibit the dominant phenotype and the other half will exhibit the recessive phenotype and the ratio should be 1:1.

Mother yellow pea (Yy)   x    green pea (yy)   -P generation

                           Y, y                            y            - Gamete

                           Yy (yellow) , yy (green)           -F1 generation

Therefore, it is concluded from the above explanation that we have to perform a test-cross to know the genotype of the pea plant.

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Answer:

nitrogen?

Explanation:

Burning fossil fuels like coal and oil puts more carbon dioxide into our atmosphere. NASA has observed increases in the amount of carbon dioxide and some other greenhouse gases in our atmosphere. Too much of these greenhouse gases can cause Earth's atmosphere to trap more and more heat. This causes Earth to warm up.

Carbon dioxide (CO2) makes up the vast majority of greenhouse gas emissions from the sector, but smaller amounts of methane (CH4) and nitrous oxide (N2O) are also emitted. These gases are released during the combustion of fossil fuels, such as coal, oil, and natural gas, to produce electricity.

The answers include the following:

This process involves the division of parent cells into two or more daughter cells and comprises of meiosis and mitosis.

Meiosis produces four daughter cells while mitosis produces two daughter cells.

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Answer: urine concentration is the best answer to this question

Explanation:

Urinary hydration biomarkers provide the best index of day-to-day hydration is urine concentration.

The answer is option B.urine concentration

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