How do vaccines prevent disease?

Scientist discovered that rocks farther away from the mid-ocean ridge were older than those near it by determining the age of rock samples obtained by drilling on the sea floor.

hope that helps

Answer:

True

Explanation:

Peristalsis is the wave-like motion of the walls of the alimentary canal that allow food to move along the lumen of the alimentary canal towards the posterior (anus). These waves are powered by the contraction and relaxation of the smooth muscles.

the immune system wouldn't be able to signal B cells to produce antibiotics and the T cells wouldn't be able to kill infected cells that are targeted.

The correct answer is: c. chordates are more closely related to echinoderms than to arthropods

The Closest nonchordate relatives to Chordates are Echinodermata. Hemichordates (such as acorn worms) and Echinodermata form the Ambulacraria which is the sister phylum of the Chordates.

Echinoderms and chordates are both deuterostomes, but the differences are that Echinoderm possess bilateral symmetry only as larvae, they have tube feet and their bodies are supported by calcite skeletons.

Answer:

Echinoderms and chordates are found on the same clade.

Explanation:

Answer: c

Explanation:

Answer:

The answer is: C. the star must be close enough to the Sun to show measurable parallax.

Explanation:

In the field of astronomy, parallax is called stellar parallax in distant stars.

The stars for which parallax measurements have been made are those that are relatively close to the sun on the galactic scale.

The answer is: C. the star must be close enough to the Sun to show measurable parallax.

Answer for plato users:

Tokyo has developed the largest flood defense in the world. It consists of five enormous underground storm-water tanks. These tanks can store water from a heavy downpour. This type of effort makes Tokyo the world leader in stopping water leakage.

Answer:

Tokyo has developed the largest flood defense in the world. It consists of five enormous underground storm-water tanks. These tanks can store water from a heavy downpour. This type of effort makes Tokyo the world leader in stopping water leakage.

Explanation:

The purpose of an experiment is to compare results with a hypothesis. Hypothesis is defined that the theory or ideal is not proven yet.

The main concern of the Act is that it explains the role of regional fishery management councils and describes their functions and operating procedures. The Magnuson Stevens Act was established in 1976 for

B. prevention of overfishing

Answer:

The Magnuson Stevents Act deals with:

B.  prevention of overfishing

Explanation:

The Magnuson-Stevens Fishery Conservation and Management Act is a legal provision that seeks the optimal exploitation of the United States coastal fisheries enacted in 1976. It is oriented to aim for sustainability and the preservation of resources to take care of them so the ecosystems can be recovered and allow exploitation in further times. It is a very good act that secures United States ecosystems to be exploited and maintained.

The correct answer is: A) The larger surface area allows for more material to be transported through the cell membrane.

Fungi are usually in the form of complex network of filaments -mycelium. Mycelium consists of hyphae that are long, thin and branched which gives them high surface area to volume ratio. This property makes fungi well-adapted for absorption of nutrients from soil and other substrates.

A larger surface area allows for more material to be transported through the cell membrane, providing fungi with efficient nutrient absorption necessary for their survival.

Fungi have a high surface-area-to-volume ratio, particularly in the structure of their mycelia and hyphae. This ratio is advantageous because it increases the efficiency of absorption. Since fungi are heterotrophic and rely on absorbing nutrients through their mycelia, having a larger surface area compared to their volume means there is more 'space' exposed to the environment, facilitating a greater and faster intake of nutrients. Furthermore, fungi release enzymes, like cellulase, into the environment that digest large organic molecules into smaller, absorbable forms. This digestion occurs externally, and the products are then absorbed by the fungi. Therefore, the larger surface area allows for more material to be transported through the cell membrane, making option A the correct answer.

Tiktaalik roseae was discovered in sediments on Ellesmere Island in Nunavut, Artic Canada (Ahlberg and Clack, 2006). The sediments it was found in are from what is known as the Fram Formation, which is thought to be deposits of lowland streams (Murphy, 2005). hope it helps

Enzymes only work on their specific substrates because enzyme catalysis involves enzyme and substrate binding to form an enzyme substrate complex.

In other words, the of substrate substances an enzyme can bind to leading to the specificity of enzyme activity  aids in causing the correct reaction in the particular structure.

Enzymes only work on their specific substrates because there is a specific match between the enzyme and its substrates. This match is known as induced fit and it allows the enzyme to bond with the substrate at its active site. Enzymes are known for their specificity, but some enzymes can act on several similar substrates.

Enzymes only work on their specific substrates because there is a specific match between an enzyme and its substrates. The enzyme's active site, which is the location on the enzyme where the substrate binds, has a shape that allows it to bond to a specific substrate. This specific match is known as induced fit, where the enzyme structure slightly changes to find the best fit between the substrate and product. Overall, enzymes are known for their specificity, but there is some flexibility as some enzymes can act on several different structurally related substrates.

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The survey has only 2 answers- yes or no- and these answers are non-numeric, and therefore catigorical. Categorical data cannot be represented by a distribution curve so no, the data cannot have a normal distribution. If on the other hand the people were asked to rate the food on a numeric scale ( say, 1 to 10 or 1 to 100) you could plot the responses and get a distribution curve, which could be normal.

Answer:

It is true that one should inhale when muscles are relaxed and exhale when initiating the lifting or push-off action in resistance training.

Explanation:

The reason why we have to inhale when the muscle is relaxed is that we need to oxygenate our body to perform the effort. Muscles burn energy and they need to be provided with it so they can perform the effort, as well as our whole body needs oxygen, proteins, and glucose to work support the effort. As well as to send enough oxygen to be distributed in the glucose they need to perform the duty. Also, we prepare our thoracic cave to endure the effort, gather the oxygen and burn it to perform the task.

Answer:

b. cause an increase in blood pH.

Explanation:

Carbonic anhydrase is an enzyme responsible for accelerating the conversion of carbon dioxide to carbonic acid, and is responsible for controlling blood pH. When this enzyme is inhibited by some molecule. In addition, inhibition of this enzyme reduces the amount of bicarbonate formed in the blood, since there will be no conversion of carbonic acid occurring at speed.

A molecule that blocks the activity of carbonic anhydrase will immediately reduce the amount of carbon dioxide dissolved in the plasma, cause an increase in blood pH, interfere with oxygen binding to hemoglobin, and increase the amount of bicarbonate formed in the blood will increase. Therefore, the correct option is E.

A compound that inhibits carbonic anhydrase will have a variety of consequences. An enzyme called carbonic anhydrase helps convert carbon dioxide and water into carbonic acid, which then splits into bicarbonate ions and hydrogen ions. As a result, inhibiting carbonic anhydrase will lower carbon dioxide levels, raise blood pH, probably inhibit the binding of oxygen to hemoglobin, and increase the amount of bicarbonate generated in the blood.

Therefore, the correct option is E.

Learn more about Carbonic anhydrase, here:

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B) All animals can reproduce sexually, and some can reproduce asexually

Answer: All animals can reproduce sexually, and some can reproduce asexually.

Explanation:

Animals can range from simple to complex eukaryotic organisms. These belongs to the kingdom Animalia. Depending upon the complexity of their body they can reproduce asexually or sexually. Majority of the animals exhibit complex body types hence they are capable of forming the gametes. The fusion of these gametes produces offsprings this mode of reproduction is called as sexual reproduction. For example, dogs and cats.  But some animals may exhibit simple body types or they are incapable of finding mates such organisms undergo asexual reproduction such as hydra, some lizards and sharks.

The situation where a beetle population's gene pool changes to contain only green alleles through random events is an example of genetic drift, a process where allele frequencies can shift due to chance, leading to gene fixation in some cases. C) genetic drift. is the correct option.

The scenario described in the student's question, where over time, through random chance, the gene pool of the beetle population changes eventually containing only green alleles is an example of genetic drift. Genetic drift can lead to the elimination of alleles from a population purely by chance, as described in Figure 19.2B.1, where a natural event, like a wildfire, may selectively destroy certain individuals regardless of their genetic traits. This can result in significant changes in the allele frequencies in a population, especially in small populations, where chance events can have larger impacts. Similarly, gene fixation can happen when certain alleles become more prevalent solely due to random sampling of organisms that reproduce, as depicted in Figure 19.1 A. 1. This is different from natural selection, which involves traits conferring a survival or reproductive advantage, thereby increasing the frequency of those advantageous alleles over time.

bpwhamburgorchardpark.org  Has a short video on it.

Thye answer should be A.)

Answer:

B. taking a shorter shower

Explanation:

Using the same bag would be reusing

Taking a shorter shower reduces the amount of water you use.

Turning old cans into new ones is recycling.

Throwing your trash in the garbage is wasteful.

Final answer:

The correct answer is C) turning old aluminum cans into new ones, as it exemplifies reducing by recycling materials and thereby conserving resources.

Explanation:

Understanding Reducing, Reusing, and Recycling

In the context of environmental conservation, the term reduce refers to the strategy of minimizing the amount of waste produced by consuming fewer products or choosing products with a lower environmental impact. The act of turning old aluminum cans into new ones recycles materials, thereby reducing the need to extract and process new raw materials. This is beneficial for the environment as it saves energy and reduces greenhouse gas emissions. On the other hand, using the same bag every time you go shopping is an example of reusing, which extends the life of products. Taking shorter showers helps conserve water and energy but is not directly related to waste reduction, and throwing trash in the garbage is merely waste disposal without reducing or recycling.

Answer: C) turning old aluminum cans into new ones is an example of reducing because it involves processing used materials to create new products, thereby reducing the need to use new resources.

D. Sedimentary

Answer:

sedimentary

have a nice day.

The correct answer is: Glycogen phosphorylase UDP-glucose

Steps of glycogen synthesis (glycogenesis) are:

• Glucose conversion into glucose 6-phosphate by the glucokinase enzyme

• Glucose-6-phosphate conversion into glucose-1-phosphate by the phosphoglucomutase enzyme

• Glucose-1-phosphate conversion into UDP-glucose by the enzyme UDP-glucose pyrophosphorylase

• Creation of initial short glycogen chains by glycogenin

• UDP-glucose is added to the growing glycogen chain to the 4-hydroxyl group of the glucosyl residue by the glycogen synthase enzyme

• Branches are made by glycogen branching enzyme (amylo-α(1:4)→α(1:6)transglycosylase).

Glycogen phosphorylase is not involved in glycogen synthesis; it is involved in breaking down glycogen. Instead, enzymes like glycogen synthase, glycogenin, and amylo-(1,4 to 1,6)-transglycosylase play key roles in the synthesis of glycogen.

The molecule that is NOT involved in glycogen synthesis is glycogen phosphorylase. This enzyme is actually involved in glycogen breakdown, not its synthesis. Glycogen synthesis involves several key enzymes and steps that include the phosphorylation of glucose to form glucose-6-phosphate (G6P), isomerization to create glucose-1-phosphate (G1P), and the subsequent formation of UDP-glucose. Glycogen synthase then catalyzes the addition of UDP-glucose to the growing glycogen chain. Glycogenin serves as a primer for glycogen synthase and amylo-(1,4 to 1,6)-transglycosylase, also known as the glycogen branching enzyme, is responsible for introducing branches into the glycogen molecule.

The organelle necessary for the process of photosynthesis is chloroplasts.

I would say the thiamin  is more light sensitive.

Vitamin D, which is present in fortified milk and produced by exposure to sunlight, is the light-sensitive vitamin mentioned in the question.

Among the options provided, the light-sensitive vitamin that is abundant in milk is vitamin D. This vitamin is often added to products such as milk through a process called fortification. Besides milk, certain types of fatty fish also have high quantities of Vitamin D. It can also be produced by our body when our skin is exposed to sunlight. People, especially those of darker complexion or those living in higher latitudes with less sunlight, often don't produce enough Vitamin D and may need supplements.

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Answer:

Random distribution.

Explanation:

The distribution of the population in space across an area is largely driven by the food and other resources in the environment. Uniform, random and clumped are the main distribution pattern.

The grass is distributed randomly in the environment, the population of deer is most likely to have random distribution pattern. Since, the distribution pattern depends upon the food resources so the deer have random distribution in space.

Thus, the correct answer is option (D).

i believe the answer is the gallbladder because, the gallbladder sits under the liver, along with parts of the pancreas and intestines. The liver and these organs work together to digest, absorb, and process food.

Answer:

intestines

Explanation:

I am going to assume you meant "chloroplasts" instead of "Hloroplasts"

Your answer will be plant cells

Chloroplasts makes the energy for the plant by conducting photosynthesis, therefore, they are only found in plant cells.

Traits in creatures evolve starting with the most common features. These shared ancestral characters are present in all organisms within a group due to descent with modification. New variations give rise to shared derived characters, which help form new branches on the phylogenetic tree.

When considering the evolution of creature traits, we start with the most basic and common features spread across a group of organisms. The process generally begins with a change in the genetic makeup, leading to a new and persistent trait.

A shared ancestral character is a trait found in the ancestor of a group and present in all organisms within that group. For example, the presence of a backbone in vertebrates is such a character. Descent with modification means that over time, new variations emerge, some of which are adaptive and become new traits. This leads to the formation of a new branch in the phylogenetic tree, indicating a shared derived character that's not present in all ancestral lines but only in the descendants from a certain point onward.

The presence of traits like hair in lizards, frogs, and rabbits based on a phylogenetic tree, must clarify that only descendants of the last common ancestor that had the trait will possess it. For example, not all vertebrates have hair because it evolved later and is only seen in mammals, which are not directly ancestral to lizards or frogs.

The first likely trait to evolve is the most common trait found across all creatures, followed by the emergence of less common traits.

To determine the order of trait evolution, start by identifying the trait that is most universally present among the creatures, as it indicates a fundamental and early adaptation. This trait likely provided a significant survival advantage, allowing it to become widespread.

Subsequent traits likely evolved as creatures adapted to more specific environmental niches or challenges. For example, if a common trait is a basic structural feature like bilateral symmetry, it likely evolved first, providing a foundation for more complex traits such as specialized limbs or sensory organs.

By comparing the distribution of traits across different creatures, we can infer the sequential evolution of these adaptations, with the most pervasive and fundamental traits appearing earliest in the evolutionary timeline.

The correct answer is mRNA.

mRNA or messenger RNA is synthesized during the process of transcription, from DNA molecule which is used as a template. mRNA contains information about protein synthesis (translation) in the form of nucleotide triplets or codons.

In the example above: reference book is DNA molecule (template for copies), copies are mRNA, wood is amino acids (building blocks) and doghouse is protein.

Population is the term that is used to describe a group of arctic foxes that live in part of Alaska's Arctic National Wildlife Refuge. The correct option among all the options given in the question is the third or the second last option. The area covered by Arctic National Refuge is approximately 19.6 million acres. It has a variety of wild animals living in it.

The term used to describe a group of arctic foxes that live in part of Alaska's Arctic National Wildlife Refuge is C. population.

Population refers to all inhabitants of a particular area - since all of these arctic foxes live in the same place, they are a population.

Answer:

B

Explanation:

B is referring to cell theory, which basically states that all living things are made of cells and all cells come from other cells withe the exception of the first life forms.