Help! Please I really don’t know this

Answer:

Self fertilization is pretty self explanatory. If you're talking about plants then it is the ability to fertilize/reproduce on its own. But for cross fertilization (for a plant), requires a support from another plant (cross pollination), in order to be fertile/reproduce

Answer:

The correct answer is -  Benedict's test.

Explanation:

To test the presence of the reducing sugar in the milk the best test would be Benedict's test with the help of Benedict's reagent or solution which is a mixture of sodium carbonate, copper(II) sulfate pentahydrate, and sodium citrate. It reacts with the reducing sugars and gives a precipitate of cuprous(I) oxide.

R.CHO + Cu(II)(OH)2 ------> R.COOH + Cu(I)2 O + 2H2O

The presence of reducing sugars results in the oxidation of them by copper iron. This forms carboxylic acid and a reddish ppt. of copper oxide turning the color of solution orange, red or brown

Eskers, moraines, and crevasses are all erosion features that are associated with glaciers. The given statement is true.

All exergonic processes produced in the cell, through which substances oxidize and chemical energy is released, are grouped under the name of cellular respiration, but to break down an organic molecule the cells employ, mainly dehydrogenations that can be carried carried out in the presence or absence of atmospheric O2 oxygen.

There are therefore two types of breathing and they are aerobic respiration and anaerobic respiration. The latter also called fermentation. Aerobic respiration  (oxidative phosphorylation)

Therefore, Eskers, moraines, and crevasses are all erosion features that are associated with glaciers. The given statement is true.

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Answer: 50

Explanation

The thick strong layer of peptidoglycans present in the cell walls of Gram-positive bacteria generates the characteristic violet/purple color whereas Gram-negative cannot be colored by crystal violet.

Gram staining is the process by which bacteria are differentially colored by crystal violet in the coloration protocol, which depends on the thick strong layer of peptidoglycan present in the cell walls of Gram-positive bacteria.

In conclusion, The thick strong layer of peptidoglycans present in the cell walls of Gram-positive bacteria generates the characteristic violet/purple color whereas Gram-negative cannot be colored by crystal violet.

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Answer:

molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Explanation:

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge.

Answer:

C

Explanation:

took the test

Characteristics and Roles:

Mitosis:

1. Produces body cells

3. Divides the parent cell once

8. Produces daughter cells with the same number of chromosomes as the mother cell

9. Aids in the repair of genetic defects

12. Produces two identical daughter cells

15. Helps in the repair of damaged cells/tissues

Meiosis:

1. Produces gametes or sex cells

4. Divides the parent cell twice

5. Produces four daughter cells

6. Gives way to genetic diversity

10. Associated with sexual reproduction

13. Occurs in the gonads (testes and ovaries)

14. Produces haploid daughter cells

Both Mitosis and Meiosis:

2. Ensures genetic stability

7. Produces gametes or sex cells

11. Associated with asexual reproduction

Answer:

Megaloblastic anemia is most often due to hypovitaminosis, specifically vitamin B12 (cobalamin) and folate deficiencies, which are necessary for the synthesis of DNA. [3] Copper deficiency and adverse drug reactions (due to drug interference with DNA synthesis) are other well-known causes of megaloblastic anemia.

Explanation:

Hope I helped.

The possible outcomes of the following cross is option B. Bb and bb only

The represents a Punnett Square in which we could see the probabilities of the offspring from the crossing genes. A Punnett rectangular is a useful tool that allows expecting the versions and probabilities that could come from go breeding. This includes predicting crossing flowers, animals, and even human beings with each different.

The male gametes are Bb and bb.

putting one letter on each box.

Using Punnett Square, possible crosses are:-

First Row & First square = Bb

First row &  Second square = bb

Second row & First square= Bb

Second square & second square = bb

The possibilities are Bb Bb bb and bb this means 50% Bb and 50% bb

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Answer:

whats the question so i can answer it?

Explanation:

Answer:

if the break is serious then they will die as the shell not only provides protection but also prevents the snail from drying out

Explanation:

Answer:

Polar covalent molecule

A covalent bond in which the electrons are not shared equally, giving the bond some ionic character.

The atom which tends to attract these shared electrons, or more precisely speaking, the electron density of the bond towards itself is said to be electronegative .

For example, the bond between H and F in an HF molecule is a polar covalent bond. The F atom being more electronegative tends to attract the shared electrons towards itself.

Due to differences in electronegativity, different atoms will have a stronger pull on electrons, creating a dipole. This can be seen in water, H20. The oxygen atom has a much higher electronegativity than the hydrogen atoms. This leads the electrons shared between the atoms to spend a majority of their time in space around the oxygen atom. Because electrons carry a negative charge, their increased presence around oxygen creates a partially negative pole there, and their absence from hydrogen creates a partially positive pole on the opposing end.

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Fever, neck pain/stiffness, and photophobia are common symptoms. Headache, dizziness, disorientation, and delirium are meningitis that can manifest differently depending on the host's age.

The infection and inflammation of the fluid and membranes around the brain and spinal cord are known as meningitis. These membranes are known as meninges. Meningitis inflammation often causes symptoms such as headache, fever, and stiff neck.

Hospital tests, A physical examination to seek for signs of meningitis. A blood test to detect germs or viruses. A lumbar puncture is a procedure in which a sample of fluid from the spine is removed and tested for germs or viruses. a CT scan to look for any brain issues, such as oedema.

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To manipulate the factors of interest and understand their effects, researchers can employ several methods. Firstly, obtaining participants' informed consent before the experiment ensures ethical practice. Secondly, summarizing participants' responses using a correlation coefficient helps quantify the relationship between variables. Additionally, holding other factors constant across experimental and control groups allows for isolating the effects of the factors being studied. Lastly, fully debriefing participants after completing the experiment ensures transparency and provides an opportunity to address any concerns or questions they may have.

In research, it is crucial to obtain participants' informed consent as it upholds ethical principles and respects individual autonomy. This ensures that participants are aware of the nature and purpose of the study, potential risks, and their rights. Summarizing participants' responses with a correlation coefficient helps determine the strength and direction of the relationship between variables, providing a quantitative measure of their effects.

By holding other factors constant across experimental and control groups, researchers can isolate the impact of the specific factors of interest, minimizing confounding variables and enhancing the internal validity of the study. Lastly, fully debriefing participants after the experiment allows researchers to provide comprehensive explanations about the purpose of the study, the manipulation of factors, and the overall findings. It also gives participants an opportunity to ask questions, address concerns, and ensure their well-being throughout the research process.

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Answer:

the answer is C

Explanation:

The true statement about panic attacks is: d. They can lead to social isolation.

Panic attacks are intense and sudden episodes of overwhelming fear or distress that can be debilitating for individuals who experience them. They are characterized by a rapid onset of intense physical and psychological symptoms, often reaching peak intensity within minutes. While panic attacks can vary in duration and individual experiences, option c, which states that they typically last for 5 to 10 minutes, is not universally true. Panic attacks can range from a few minutes to longer durations, and the length can vary between individuals.

Option a, stating that panic attacks are not linked to heredity, is incorrect. There is evidence to suggest that there may be a genetic component to panic attacks and panic disorder, with a higher risk observed among individuals with a family history of panic disorder.

Option b, suggesting that symptoms can include decreased respiration, is possible but not a defining characteristic of panic attacks. While some individuals may experience changes in their breathing patterns during a panic attack, such as hyperventilation or shortness of breath, it is not a universal symptom and can vary between individuals.

Option d, stating that panic attacks can lead to social isolation, is true. Panic attacks can have a significant impact on an individual's daily life and functioning. The fear of experiencing another panic attack or the embarrassment associated with the symptoms can lead individuals to avoid certain situations or places, which can eventually result in social isolation. The fear of having a panic attack in public or being judged by others can lead to the withdrawal from social activities and interactions. Therefore, the correct answer is d. They can lead to social isolation.

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Answer:

Color of seeds Mendel chose to cross

Explanation:

This variable does not depend on the other variables you are trying to measure, so it is independent.

In Gregor Mendel cross, the variable does not depend on the other variables you are trying to measure, so it is independent.

Mendelian Crosses: In one of his experiments on inheritance patterns, Mendel crossed plants that were true-breeding for violet flower color with plants true-breeding for white flower color (the P generation).

Mendel first experimented with just one characteristic of a pea plant at a time. He began with flower color and cross-pollinated purple- and white-flowered parent plants. He was surprised by the results. This led to his law of segregation.

A dihybrid cross is a breeding experiment between two organisms which are identical hybrids for two traits. In other words, a dihybrid cross is a cross between two organisms, with both being heterozygous for two different traits.

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Photolysis is the part of photosynthesis occurs in the granum of a chloroplast where light is absorbed by chlorophyll; a type of photosynthetic pigment that converts the light to chemical energy. This reacts with water (H2O) and splits the oxygen and hydrogen molecules apart.

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.

Moreover, photosynthesis is important because it is the process that plants use to transform carbon dioxide into oxygen with the help of sunlight. Animals need oxygen to survive and plants act as nature's air filter by removing harmful carbon dioxide.

Therefore, the energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas. After the sugar is produced, it is then broken down by the mitochondria into energy that can be used for growth and repair.

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Answer:

See explanation

Explanation:

Radioactivity is the process by which certain elements, called radionuclides, emit radiation as they spontaneously decompose into more stable elements. This process is accompanied by the release of energy, which can take the form of alpha particles, beta particles, or gamma rays.

Heat is a form of energy that is transferred from one body to another as a result of a difference in temperature. Heat is often associated with the movement of particles within a substance, as the faster the particles are moving, the more heat energy the substance contains.

In general, radioactivity and heat are not directly connected to each other, as they are two different forms of energy. However, the process of radioactive decay can release energy in the form of heat, as the energy that is released during the decay process can be absorbed by the surrounding material. Similarly, the heat generated by radioactive decay can be used to produce electricity, either through the use of a thermoelectric generator or through the process of nuclear power generation.

The control group is the set of non-scarified seeds. The experimental group is the set of scarified seeds. The independent variable is scarification process. The dependent variable. is the number of seeds that germinated in each group.

Controlled variables are the amount of water supplied daily, the constant temperature of the growing environment, the type of cherry seeds used and the size of the planting pots.

Quantitative data are the daily count of the number of seeds that germinated in each group over three weeks.

The study does not have qualitative data.

A scientific experiment needs to feature all of the elements represented above to be effective and reliable. This is because these elements prove that the experiment was carried out methodically, specifically, and with care in each variable and presented data.

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Answer:

D.

Explanation:

Plants take in CO2 and turn into Carbo.

That's the most efficient example

When recording euthanasia be sure to note the date, animal identification information, confirmed or tentative diagnosis, euthanasia method and final disposition.

The euthanasia record is an important document for veterinary practices and should be maintained according to state and federal regulations and the policies and procedures of your practice.

When recording euthanasia, be sure to note the date, animal identification information, confirmed or tentative diagnosis, euthanasia method, and final disposition.

Another important thing to note is that euthanasia should be considered only when alternative management options are not available or have been exhausted, when quality of life is poor, and when euthanasia is in the best interest of the animal.

All reasonable steps should be taken to minimize pain and distress during the process.

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Answer:

It has air but also lakes can be built to provide water to people living on it

Answer:

Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.

Explanation:

The wrong statement for the epithelium lining of your skin and the inside of your mouth is that "they are both keratinized" because the epithelium lining of your skin is keratinized, but the inside of your mouth is not.

Thus, the correct option is they are both keratinized (A).

The kerаtinized epithelium is found on the surfаce of the skin аnd is chаrаcterized by а lаyer of deаd cells thаt аre filled with the protein kerаtin. This provides а protective bаrrier аgаinst mechаnicаl stress, dehydrаtion, аnd pаthogens.

However, the inside of your mouth is lined with non-kerаtinized strаtified squаmous epithelium, which is moist аnd does not hаve the lаyer of deаd cells filled with kerаtin. Avascular are in both hips or in both knees. And a basement membrane lies beneath the epithelium and separates it from underlying tissue.

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Answer:  

The cell wall.

Explanation:

Answer:

your skin

Explanation: