_____________ are present in an organism, but they don't function in the same way they used to. HELP ILL GIVE BRAINLIEST!!! picture attached as well.

A.Embryos
B.Analogous structures
C.Vestigial structures
D.Homologous structures

Answer:

Anaphase

Explanation:

each chromosome is composed of two chromatids

Answer:

Throughout inter phase, nuclear DNA remains in a semi-condensed chromatin configuration. In the S phase (synthesis phase), DNA replication results in the formation of two identical copies of each chromosome-sister chromatids- that are firmly attached at the centromere region.

Explanation:

The strange star-shaped organelle in the fungus might have arisen through endosymbiosis with a bacterium.

Endosymbiosis is a theory that proposes how eukaryotic cells evolved through the engulfment and integration of certain prokaryotic cells. In this case, the strange star-shaped organelle in the fungus possesses several characteristics that suggest it could have originated through endosymbiosis with a bacterium.

The presence of a small genome in the organelle's interior suggests it retains some genetic material, similar to mitochondria and chloroplasts, which are believed to have originated from endosymbiotic events.

The two membranes surrounding the organelle indicate that it may have been engulfed by the fungal cell, as seen in the engulfment of mitochondria and chloroplasts.

The absence of vesicle formation from the organelle membrane suggests that the organelle might have a different mechanism for protein trafficking and secretion compared to other eukaryotic cells.

The presence of bacterial-like proteins within the organelle's interior supports the idea that it originated from the engulfment of a bacterium.

The presence of ribosomes in the organelle indicates its ability to synthesize proteins, similar to mitochondria and chloroplasts.

Overall, these characteristics align with the theory of endosymbiosis, suggesting that the strange star-shaped organelle in the fungus might have originated through the incorporation and integration of a bacterial cell into the fungal cell.

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Answer:

No

Explanation:

This tool does not effect the environment because it doesn't contain any harmful chemicals that would interfere with the environment's well being.

The jaws of life does not damage the environment.

It is basically the rescue tool that are applied for the difficult and the emergency situations like when the car is crushed. Moroever, the tool does not impact the environment because it does not comprise of any harmful chemicals that impact the well-being of the environment.

Therefore, The jaws of life does not damage the environment.

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The true statement about sources of air pollution in the United States is that mobile sources are non-point sources of air pollution.

Answer choice b is correct. Mobile sources, such as cars, trucks, and other forms of transportation, are considered non-point sources of air pollution. Non-point sources refer to dispersed and widespread sources that contribute to pollution over a large area. Mobile sources emit pollutants such as nitrogen oxides (NOx), volatile organic compounds (VOCs), and particulate matter (PM), which contribute to air pollution.

Answer choices a, c, and d are incorrect. Natural sources do contribute to air pollution, but they do not account for over half of the emissions. Air pollution levels vary across the country depending on various factors such as industrial activities, population density, and geographical conditions. Lead in the atmosphere is primarily the result of past emissions from activities like leaded gasoline combustion and industrial processes, rather than refrigeration or aerosol sprays.

In summary, mobile sources are non-point sources of air pollution in the United States, emitting pollutants that contribute to the overall air pollution levels in the country.

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Answer:

Choose the true statement about sources of air pollution in the United States.

Stationary sources of air pollution are also point sources.

Mobile sources contribute about half of man-made pollution emissions.

Non-point sources of air pollution are easier to monitor and control.

Natural sources of air pollution include household products.

Explanation:

Stationary sources of air pollution are also point sources.

Answer:

more individuals are produced each generation that can survive. phenotypic variation exists among individuals and variation is heritable. those individuals with heritable trails better suited to the environment will survive.

Answer: https://medlineplus.gov/genetics/understanding/genomicresearch/genomeediting/

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Actin and Myosin are needed for cytokinesis in plant cells but not animal cells, options a and e are correct.

Cytokinesis, the division of the cytoplasm following nuclear division, differs between plant and animal cells. While animal cells rely on a contractile ring composed of actin and myosin filaments to pinch the cell membrane inward, plant cells have a distinct process due to the presence of a rigid cell wall. In plant cells, cytokinesis involves the formation of a cell plate, which eventually develops into a new cell wall that separates the daughter cells.

This process requires actin filaments for guidance and deposition of materials, as well as myosin to assist in the movement and organization of vesicles involved in cell plate formation. Microtubules, kinesin, and dynein are involved in various cellular processes but are not specifically required for cytokinesis in plant cells, options a and e are correct.

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Answer:

D. A nitrogen base has been added to the DNA molecule.  

Explanation:

You can see that the sequence for the nitrogen bases are in the exact same order after the exposure, this rules out A.  You can count how many bases there are, 7 before and 8 after so it cannot be B. Lastly, given that they are in the same order as were before and that a base has been added, you can see that no bases were replaced (so not C) and that D is your answer.  

Wdym you give up...

When considering the genotype of the parents aabbccddee and aabbccddee, it can be concluded that all their offspring would be of the same genotype aabbccddee.

Same genotype is because the parents are homozygous, meaning they carry two copies of the recessive allele at each locus that has two alternative alleles.Based on the information given, all of the children will inherit two recessive alleles at each locus because the parents have only recessive alleles.

Mendelian inheritance states that traits are inherited from parents in a predictable manner.

When two parents are homozygous for the recessive allele, their offspring is also homozygous for the recessive allele. In this case, it means that all of their children will inherit two copies of the recessive allele at each locus.

Therefore, all of their children will have aabbccddee genotype.

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Answer:

What will be the consequence of not having an origin of replication (ori) in the vector? Explanation: In the case ori is absent, the vector won't be able to replicate

Explanation:

As the replication won't take place, only one of the daughter cells would be having the vector. A colony of transformed colonies won't be obtained.

if a vector does not has the origin of replication result in not doing replication as the unit of replication is Ori.

In the case Ori is absent, the vector may not be capable of replicating. As the replication may not take place, the handiest one of the daughter cells might be having the vector. A colony of converted colonies may not be obtained.

Of these, the maximum usually used vectors are plasmids. Common to all engineered vectors have a foundation of replication, a multi cloning site, and a selectable marker. The vector itself is normally a DNA series that includes an insert (transgene) and a bigger series that serves as the "backbone" of the vector.

Thus it is clear that if a vector does not have an origin of replication result in nonreplicating.

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Answer:

The number of organisms which can survive to the resources within an ecosystem.

Explanation:

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Answer:

The orchids benefit in several ways. They get more sunlight and are more easily visited by the moths which pollinate them.Orchids do not harm the trees they grow in. Their roots stay on the bark of the tree; they do not take water or nutrients from the tree.

The ways in which, bacteria and the fungus Penicillium are similar is; Microscopic organisms, Environmental presence, and the ways in which, bacteria and the fungus Penicillium are different is; Cell type and structure, Mode of nutrition.

Similarities between bacteria and the fungus Penicillium;

Microscopic organisms; Both bacteria and Penicillium are microscopic organisms. They cannot be seen with the glance and require a microscope for observation.

Environmental presence; Both bacteria and Penicillium can be found in a wide range of environments. They are highly adaptable and can thrive in various habitats, including soil, water, air, and even the human body.

Differences between bacteria and the fungus Penicillium;

Cell type and structure; Bacteria are prokaryotic organisms, which means they lack a true nucleus and other membrane-bound organelles. They have a simpler cell structure compared to the eukaryotic fungus Penicillium. Penicillium has complex cellular structures, including a well-defined nucleus and various organelles.

Mode of nutrition; Bacteria and Penicillium differ in their modes of nutrition. Bacteria can be autotrophic, obtaining energy through photosynthesis, or heterotrophic, obtaining energy by consuming organic matter. In contrast, Penicillium is a heterotrophic fungus, obtaining nutrients by absorbing organic matter from its surroundings.

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ANSWER AND QUESTION.....

Mistletoe steals nutrients and """water"""

from its host plant.

A. Carbon Dioxide

B. Water

Mistletoe is the common name for obligate hemiparasitic plants in the order Santalales. They are attached to their host tree or shrub by a structure called the haustorium, through which they extract water and nutrients from the host plant. Their parasitic lifestyle has led to some dramatic changes in their metabolism.

Explanation:

CAN I GET THE CROWN

Answer:

Processes:

Explanation:

Prophase I, Prometaphase I, Metaphase I, Anaphase I, Telophase I and Cytokinesis, Prophase II, Prometaphase II, Metaphase II, Anaphase II, and finally, Telophase II and Cytokinesis.

Answer:

Plasma

Explanation:

The blood is a key part of the circulatory system. It is a tissue composed of cells that make it up. The blood contains the following components namely; plasma, red blood cells/erythrocytes, white blood cells/leukocytes, and platelets/thrombocytes.

The plasma is referred to as the "liquid" part of the blood and makes up the major part of the blood tissue. The plasma contains 90% water, and 10% dissolved materials like nutrients, minerals, vitamins, digested food, and salts. Hence, based on this question, the answer is PLASMA.

Answer:

Lack of the dystrophin protein in muscle cells causes them to be fragile and easily damaged. DMD carriers are females who have a normal dystrophin gene on one X chromosome and an abnormal dystrophin gene on the other X chromosome. Most carriers of DMD do not themselves have signs and symptoms of the disease, but a minority do. Symptoms can range from mild skeletal muscle weakness or cardiac involvement to severe weakness or cardiac effects and can begin in childhood or adulthood.

Explanation:

Answer:

Suspension feeding involves collecting food particles like small organisms, organic matter, detritus which are suspended in water, often using some form of filtration.

Suspension feeders catch food or organic material from the water using tentacles or spiny arms

where as

Deposit feeding involves feasting on detritus and organic matter that have settled on the ocean floor.

Deposit feeders pass sand, mud, water or sediment into their mouths using mucous-covered tentacles or arms etc.

Explanation:

Suspension feeding ingests the food particles which are suspended in water, while deposit feeding ingests sediments and aquire foods.

Deposit feeders may be defined as those aquatic organisms that forage on organic matter that settled down on the bottom.

Suspension feeding maintains the water quality in the aquatic environment, while deposit feeding enhances oxygen level and nutrient cycling.

Suspension feeding occurs similarly to filter-feeding that only ingests suspended particles. While deposit-feeding ingests the deposited particles like detritus, organic matter, etc.

Therefore, it is well described above.

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Answer:

b. a segment of a DNA molecule.

Answer:

a segment of a DNA molecule.

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Antibody-mediated immunity targets extracellular pathogens through the production of specific antibodies that neutralize, eliminate, and enhance immune responses, providing defense against bacteria, fungi, and viruses in the body.

Antibody-mediated immunity works mainly against extracellular pathogens, which include any bacteria, fungi, or viruses that are in the extracellular fluids of the body. B cells respond to unprocessed antigens, but their response is more intense if they process the antigen and receive costimulation by helper T cells. Once activated, B cells produce clones of plasma cells and memory cells which reside in lymphatic tissues (such as MALT, lymph nodes, and spleen). Plasma cells produce antibodies, which leave the lymphatic tissue and circulate in body fluids. Antibodies can be grouped into five classes, each with specific biological roles.

The five classes of antibodies, also known as immunoglobulins (Ig), are IgM, IgG, IgA, IgE, and IgD. IgM is the first antibody produced during an immune response and is effective in activating complement and agglutination. IgG is the most abundant antibody and provides long-term immunity by neutralizing toxins and promoting opsonization for phagocytosis. IgA is found in bodily secretions like saliva, tears, and breast milk, providing localized defense on mucosal surfaces. IgE is involved in allergic reactions and defends against parasites. IgD's function is not fully understood but it is believed to play a role in B cell activation.

Actions of antibodies include neutralization, where they bind to and block the activity of pathogens, immobilization by preventing pathogen movement, agglutination by clumping pathogens together for easier elimination, and precipitation of antigens out of solution. In addition, antibodies can activate complement, a group of proteins that help destroy pathogens, and enhance phagocytosis by marking pathogens for engulfment by immune cells.

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Answer:

Test Crosses. A test cross is utilized to decide the genotype of a person with a attribute.

Explanation:

Brainliest?

Answer:

Neurotransmitters; neuromodulators; facilitation; an increased; an increased; inhibition; a decreased; a decreased.

Explanation:

In Biology, stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.

In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.

Neuromodulation is the release of chemicals (other than neurotransmitters ) from cells that locally regulate or alter the response of neurons to neurotransmitters. The substances released are called neuromodulators. Neuromodulation generally results in either facilitation or inhibition. When there is greater response from a postsynaptic neuron because of the release of neuromodulators it is facilitation. This may result from either an increased amount of neurotransmitter in the synaptic cleft or an increased number of receptors on postsynaptic neurons. When there is less response from a postsynaptic neuron because of the release of neuromodulators, it is called inhibition. This results from either a decreased amount of neurotransmitter in the synaptic cleft or a decreased number of receptors on postsynaptic neurons.

Answer:

1-2 pounds

Explanation:

uuhh just is lol

The labelling of population growth regulation as; Tornado wiping out a population of scrub pine trees are Density Independent, Adelie penguin mating pair cannot lay eggs due to occupied nesting sites are Density Dependent, and Pack of hyenas chasing and taking down gazelles from a larger herd are Density Dependent.

Tornado wiping out a population of scrub pine trees: DI (Density Independent)

Tornadoes are natural disasters that can cause widespread destruction and affect populations regardless of their size or density. The impact of a tornado on the scrub pine tree population is not directly influenced by the density of the population. Therefore, this scenario is an example of density-independent regulation.

Adelie penguin mating pair cannot lay eggs due to occupied nesting sites: DD (Density Dependent)

In this scenario, the availability of nesting sites directly affects the ability of the Adelie penguin mating pair to lay eggs. As the nesting sites become occupied by other mating pairs, the density of the population increases, leading to competition for limited resources. The regulation of mating pair reproduction based on the density of the population is an example of density-dependent regulation.

Pack of hyenas chasing and taking down gazelles from a larger herd: DD (Density Dependent)

The behavior of the pack of hyenas in chasing and taking down gazelles is directly influenced by the density of the gazelle population. As the herd size increases, there are more potential prey available, leading to increased hunting success for the hyenas. Therefore, this scenario exemplifies density-dependent regulation, as the predator-prey interaction is influenced by the density of the gazelle population.

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Answer: See explanation

Explanation:

a) How are aquatic organisms affected by oil spills in the ocean?

Aquatic organisms are affected by oil spilled as it is fatal and toxic to them. It can cause death, habitat degradation, vulnerability to predators and can also lead to the inability to hatch their eggs.

b) Which type of chemical compounds are degraded by microbes used for

clearing oil spills?

The chemical compound degraded by microbes are clearing oil spills are Pseudomonas spp and Alcanivorax borkumensis.

c) Name any two species of microbes which can degrade rubber from

garbage.

These are Vibrio and Ideonella sakaiensis.

d) Why should there be a ban on plastic bags?

There should be a ban on plastic bags as they're difficult to degrade as they are made up of PET.

The portion of the antigen known as the immunogen that antibodies specifically attach. These bonds could be Van der Waals forces, electrostatic bonds, or hydrogen bonds. Hence (a) is the correct option.

The location where an antigen binds to an antibody is created by the CDRs of the heavy and light chains juxtaposed on the surface of the antibody molecule. The particular antigen-binding location in the variable region of an antibody molecule known as a paratope interacts with the spot of an antigen molecule called an epitope, which is referred to as an antigenic determinant. S. aureus possesses a protein called protein A on its cell wall that can bind antibodies of any specificity.

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the use electricity more

Answer:

I and III only