_____ are eukaryotic autotrophs that float near the surface of water and are the basis of the food chain.

Alzheimer's disease is a progressive deterioration of the brain cells :

Alzheimer's disease is a type of dementia that begins with a gradual loss of one's memory which degenerates into the inability of a patient suffering from the disease and some of these inabilities includes;

Alzheimer's disease affects the parts of the human brain responsible for proper speech/language and memory.

Hence we can conclude that Alzheimer's disease is a progressive deterioration of the brain cells : i.e. statement in question is False

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Answer:

Consumer: a person or thing that eats or uses something.

Producer: an organism that produces. (makes) its own food.

Explanation:

Hope that helps buddy :)

Answer:

A nucleotide is the basic building block of nucleic acids.

Explanation:

RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.

Hope this helps even though it was yesterday :)

The given DNA coding strand is AGT ATG GCC CGT ACA, and we are supposed to determine what messenger RNA (mRNA) would be sent to the cytoplasm. Let's examine the steps that would be involved in doing so.DNA consists of two complementary strands: the coding strand and the template strand.

The coding strand has the same nucleotide sequence as the RNA transcript, except that thymine (T) is substituted for uracil (U).The messenger RNA (mRNA) is created in a process known as transcription, in which RNA polymerase reads the DNA sequence of the template strand and synthesizes a complementary mRNA sequence.The steps involved in transcription are:

1. RNA polymerase binds to the DNA double helix, breaking the hydrogen bonds between the complementary base pairs in the process. The enzyme recognizes a specific nucleotide sequence known as the promoter region as the starting point for transcription.

2. RNA polymerase reads the DNA sequence of the template strand in the 3' to 5' direction and synthesizes a complementary RNA sequence in the 5' to 3' direction.

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Answer:

To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.

Explanation:

The correct answer is A : Most fungi are pathogenic for humans. Although the great majority of fungus lack pathogenic characteristics, certain species can infect people with diseases that can range from mild to fatal. In addition, a few fungal species are plant diseases that have a terrible effect on agriculture.

Only a small number of the estimated 1.5–5.0 million fungal species on Earth (O'Brien et al. 2005) are able to infect healthy individuals, and only a small number of them cause illness in humans.

Fungi have significant roles in biomedical research, manufacturing, and industrial sectors, and they have an impact on human behavior through their effects on agriculture, world health, and biodiversity. On the earth, fungi have been found in practically every type of habitat, including air, soil, fresh water, and the seas.

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Annelida possess a closed circulatory system. They have a muscular pumping hearts. The blood moves through the capillaries to be carried to the cells of the body.

Platyhelminthes does not have a circulatory system. They have limited way to carry oxygen to the rest of the cells of the body.

Nematoda also does not have a circulatory system but possess a complete digestive system. They use diffusion in order to breathe.

Answer - Option 2 - Annelida

The middle or second section when three-sectioning the facial area includes: b. the tip of the nose to the tip of the chin.

When dividing the facial area into three sections, the middle or second section includes the area between the tip of the nose and the tip of the chin.

This section is often used as a reference point for various beauty and grooming techniques, such as applying makeup or shaving. The other two sections include the forehead and the top of the head, and the lower part of the face, respectively.

This method is commonly used in the beauty and skincare industry, as well as in medicine and plastic surgery. It is important to identify the correct section when performing various procedures to ensure the desired outcome and to avoid any potential complications.

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Answer:

blood-Fluid connective tissue

tendons-bone to muscle

ligaments-muscle to muscle

.・゜✭・Examples include adipose, cartilage, bone, blood, and lymph.

The provided question was incomplete as it lacks the options. However, the correct option for this question is as follows:

an electronic balance to measure the volume of soil in which each corn plant is grown

a graduated cylinder to measure 30 mL of water for each plant daily

a metric ruler to determine the mass of each plant each week

a Celsius thermometer to determine the pH of the soil

Answer:

The correct answer is - a graduated cylinder to measure 30 mL of water for each plant daily

Explanation:

The basic knowledge requires to answer this question, as it is not asking about the photosynthesis or temperature of the air but the tool which is correctly matched, so let's get the answer from the options:

the first option is talking about the electric balance and measuring the volume of soil with it, as wee know electric balance measures mass or force on the pan downwards which is the mass of the substance. so it is an incorrect match.

Graduated cylinder to measure the 30 ml water which is correct as this tool measure volume of liquid or substance.

A metric scale measures distance or length of an object, not the mass thus, it is an incorrect match.

A thermometer measures the temperature, not the pH of a substance so it is also an incorrect match.

The remarkable diversity of living organisms on Earth can be best explained by the process of evolution through natural selection, where genetic variations and advantageous traits allow certain individuals to survive and reproduce, leading to the formation of new species over time.

The best scientific explanation for the diversity of living organisms on Earth is evolution through natural selection.

This theory, proposed by Charles Darwin in the 19th century and supported by extensive evidence, explains how species change over time and how new species arise.

The process begins with genetic variations that occur through random mutations, which introduce new traits into populations. These variations can confer advantages or disadvantages in different environments.

When the environment changes or when organisms move to new habitats, certain traits become more favorable for survival and reproduction.

Organisms with these advantageous traits are more likely to survive and pass on their genes to the next generation. Over time, this leads to the accumulation of beneficial traits in a population, leading to the formation of new species.

Natural selection acts as a filter, promoting the survival and proliferation of individuals with traits that are well-suited to their environment, while less advantageous traits are gradually eliminated.

This continuous process of adaptation and diversification has resulted in the incredible array of species we see today.

It is important to note that evolution does not operate on an individual level but rather on populations over long periods of time.

Genetic variations, natural selection, and environmental factors together shape the diversity of life on Earth.

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The incorrect statement concerning evaporation is: "Increasing the surface area of the liquid decreases the rate of evaporation." Option A is correct.

In reality, increasing the surface area of the liquid actually increases the rate of evaporation. This is because evaporation occurs at the surface of the liquid, and a larger surface area provides more space for molecules to escape into the vapor phase. Evaporation is a process by which a liquid changes into a gas or vapor state.

It occurs when molecules near the surface of a liquid gain enough energy to overcome intermolecular forces and escape into the surrounding space as vapor. Increasing the temperature of the liquid is one of the factors that can significantly affect the rate of evaporation. As the temperature rises, the average kinetic energy of the molecules increases, resulting in more molecules having sufficient energy to transition from the liquid to the gas phase, option A is correct.

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The question is inappropriate; the complete question is:

Which of the following statements concerning evaporation is incorrect?

A. Increasing the surface area of the liquid decreases the rate of evaporation.

B. Increasing the temperature of the liquid increases the rate of evaporation.

C. Evaporation causes the liquid temperature to decrease.

D. Molecules with energies considerably above average are those that escape from the liquid.

There is sufficient evidence to warrant rejection of the claim that the sex of the respondent is independent of the choice for the cause of global warming.

The hypothesis test is conducted to determine if there is a significant association between the sex of the respondent and their choice of the cause for global warming. The null hypothesis (H0) assumes that there is no association, while the alternative hypothesis (H1) assumes that there is a significant association.

By analyzing the data using a 0.01 significance level, the chi-square test is performed. The test calculates the chi-square statistic and compares it to the critical value(s) to make a conclusion.

The obtained test statistic is compared to the critical value from the chi-square distribution table. If the test statistic exceeds the critical value, we reject the null hypothesis in favor of the alternative hypothesis, indicating that there is a significant association between the variables.

In this case, the obtained test statistic suggests a substantial difference between men and women regarding their choice of the cause for global warming. Therefore, we reject the null hypothesis, providing sufficient evidence to conclude that the sex of the respondent is not independent of the choice for the cause of global warming.

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Answer: OD

Explanation: OD. Due to the complementary nature of base pairing, elongation is paused when DNA polymerase adds the wrong nucleotide. The structure of DNA helps prevent errors from occurring during DNA replication by the complementary base pairing of the nucleotides. If DNA polymerase adds the wrong nucleotide, the base pairing will be disrupted, causing elongation to pause and allowing for correction mechanisms to remove the incorrect nucleotide and replace it with the correct one, reducing the number of errors that occur during replication.

Except for the humerus and femur, any of the following can serve as the origin or insertion point for axial skeleton muscles.

The 80 bones that make up the centre core of your body are part of the axial skeleton. Your skull, neck, back, and chest bones are part of this. Your axial skeleton supports and cushions your organs, spinal cord, and brain. The axial skeleton includes the head, laryngeal skeleton, vertebral column, and thoracic cage.

The bones that correspond to the arms and legs, respectively, are the humerus and femur. Despite having largely comparable pieces, their structures have been altered to fulfil various objectives. The femoral head is roughly two-thirds of a sphere, but the humeral head is almost hemispherical.

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The complete question is:

Muscles of the axial skeleton might have an origin or insertion on any of the following except...

1. bones of the skull

2. humerus, femur

3. cranial bones, cervical vertebrae

4. thoracic vertebrae, lumbar vertebrae

True. All vertebrates maintain a blood osmolarity of about 300 million through homeostatic mechanisms. This is important for maintaining proper cellular function and avoiding damage from changes in osmolarity.

The osmolarity of blood refers to the concentration of solutes in the blood, which includes electrolytes, nutrients, waste products, and hormones. Maintaining blood osmolarity within a narrow range is important for proper cell function and overall health. The mechanisms involved in regulating blood osmolarity vary depending on the species, but typically involve the actions of hormones such as antidiuretic hormone (ADH) and aldosterone, which act on the kidneys to adjust the amount of water and solutes excreted in the urine.

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Answer:

To self assertive

Explanation:

Gives you confidence and advance on you're own personality and views.

Answer:

Light absorption is a process by which light is absorbed and converted into energy. ... If they are not complementary, then the light passes through the object or gets reflected. These processes usually occur at the same time because the light is usually transmitted at various frequencies.

Explanation:

Answer:

Your answer is D) All colors are absorbed except green

The cross for the given trait would be a monohybrid cross as only one trait has to be studied.

When two heterozygous white rabbits are crossed, the offspring that would be formed are as shown in the attached image.

The allele for white fur which is dominant can be denoted by W and thus, the allele for recessive brown fur will be denoted by w.

The resulting genotypes would be WW, Ww and ww in the ratio 1:2:1

The resulting phenotypes of the offspring would be 3 white and 1 brown, due to the genotypes of 1 homozygous dominant, 2 heterozygous dominant and 1 homozygous recessive.

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Answer:

D. Ribosomes

Explanation:

Rough endoplasmic reticulum (RER) bears ribosomes on it surface which give it granular apperance and they are the site of protein synthesis.

Answer

The answer is a

Answer:

They are only live and are able to multiply inside the cells of other living things. The cell they multiply in is called the host cell. And the virus is made up of a core of genetic material, either DNA or RNA,

Explanation:

Explanation:

The infection causes characteristics patters, such as "mosaic" like Mottling and discoloration on the leaves (hence the name).TMV was the first virus that discovered

Answer:

1. No

2. Yes

3. No

4. Yes

5. No

Explanation:

Photosynthesis in chloroplasts involves major steps such as light absorption, electron transport, ATP synthesis, and carbon fixation. It begins with light-dependent reactions in photosystems I and II, followed by electron transport and ATP synthesis.

Step 1: Photosynthesis is a complex process that occurs in the chloroplasts of plants, involving several major steps such as light absorption, electron transport, ATP synthesis, and carbon fixation.

Step 2:Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. It occurs in the chloroplasts, specifically in three main stages: light-dependent reactions, electron transport chain, and the Calvin cycle.

During the light-dependent reactions, light energy is absorbed by chlorophyll molecules in photosystem II (PSII) and photosystem I (PSI). In PSII, water molecules are split, releasing electrons, protons (H+ ions), and oxygen. The electrons move through an electron transport chain, creating a proton gradient across the thylakoid membrane. This gradient is essential for ATP synthesis by ATP synthase, using the energy from the electron flow.

In PSI, electrons are re-energized by absorbing more light energy and are ultimately used to produce NADPH, another energy carrier. The ATP and NADPH generated in the light-dependent reactions are then used in the Calvin cycle.

The Calvin cycle, also known as the light-independent reactions or carbon fixation, occurs in the stroma of the chloroplast. It uses ATP, NADPH, and carbon dioxide (CO2) to produce glucose (G3P), which serves as a building block for sugars and other organic compounds. The cycle regenerates the starting molecule, ribulose bisphosphate (RuBP), allowing the process to continue.

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Many forms of genetic alterations by radiation are used often to help life exist. Thus, the correct option for this question is C.

A genetic alteration may be defined as a process through which any change in the DNA sequence can alter the genetic code and therefore may alter the synthesis of the protein that it encodes.

Genetic alterations by radiation are beneficial for the survival of living organisms. This is because any type of lower-level radiation doesn't cause specifically "good" or "bad" mutations, it just causes changes that are necessarily required for the existence of living entities.

Therefore, many forms of genetic alterations by radiation are used often to help life exist. Thus, the correct option for this question is C.

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Answer:

protect the cell from invading phages

Explanation:

The natural role of the restriction enzymes is to protect the cell from invading phages.

The restriction enzyme is an enzyme that functions by cutting DNAs from some pre-identified sites on the DNA. They are primarily found in bacteria where they protect the cell from invasion by foreign DNA from phages.

Once a phage invades a bacterium, the restriction enzyme quickly acts by cutting the phage's DNA into smaller pieces, leading to the destruction of the DNA and hence, the protection of the bacterium cell.

Answer:

C.

Explanation:

When similar characteristics occur because of environmental constraints and not due to a close evolutionary relationship, it is called an analogy or homoplasy. For example, insects use wings to fly like bats and birds, but the wing structure and embryonic origin is completely different.