A seismograph station recorded the arrival of the first
P-wave at 7:32 p.m. from an earthquake that occurred
4000 kilometers away. What time was it at the station
when the earthquake occurred?

Answer:

hormones.

Explanation:

Some of the constants in the experiments are;

F) Pencil sharpeners: Both groups used the same tool to sharpen pencils.

G) The workers: Both groups had the same number of workers (25 each).

E) All worked for one hour: Both groups had the same amount of time to complete the task.

In  experiments, constants are those variables that are kept the same or held constant throughout the experiment.

The constant variables help to know whether any observed changes or effects can be attributed to the variable being tested, rather than other factors.

By controlling these the constant variables, scientists can then reduce the things that could be a source of error in their research and increase the accuracy and reliability of their results.

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DNA replication is semi-conservative because the original molecule separates into two different strands, and each of them works as a model for a new strand to grow. A) The daughter DNA molecule consists of 1 parent strand and 1 new strand.

DNI replication is semi-conservative because, after replication, each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.

The replication products are double-stranded DNA molecules, each carrying an original strand and a new one.

The correct option is A) The daughter DNA molecule consists of 1 parent strand and 1 new strand.

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In a semi-conservative model of DNA replication, the daughter DNA molecule consists of 1 parent strand and 1 new strand. Option 1.

The process of DNA is naturally semi-conservative.

This is because each strand of the original DNA forms a template for the synthesis of a complementary strand. Thereafter, each of the newly synthesized strands forms a double helix structure with their respective parent strands.

Thus, e newly replicated DNA molecule usually consists of 1 old strand and 1 new strand. Consequently, the process is described as being semi-conservative.

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Answer:

here

Explanation:

properties that become apparent and result from various interacting components within a system but are properties that do not belong to the individual components themselves.

Answer:

Explanation:

Option A is the correct answer

In the cloning lab, one processed two tubes, one with the plasmid (+pGLO) and one without the plasmid (-pGLO), and the (+pGLO) on LB/amp served as the experimental plate where the gene glows ,so the option c is correct.

The +pGLO tube contains bacteria transformed with the pGLO plasmid that have a gene for antibiotic resistance and a gene for fluorescence, so the bacteria on the LB/amp/ara plate serve as a control, and based on the control, sensitive and resistant bacteria are differentiated.

Hence, in  the cloning lab, one processed two tubes, one with the plasmid (+pGLO) and one without the plasmid (-pGLO), and the (+pGLO) on LB/amp served as the experimental plate where the gene glows ,so the option c is correct.

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The question is incomplete, the complete question is the below,

For the cloning lab, you processed two tubes, one with the plasmid (+pGLO), one without the plasmid (-pGLO). The solutions were then plated on the LB, LB/amp and LB/amp/ara plates. The (+pGLO) on LB/amp/ara served as a(an) ________________________

Group of answer choices

a) control to see if transformation worked and bacteria are now antibiotic-resistant

b) control to see if bacteria survived the process of transformation

c) the experimental plate where the gene glows

d) the experimental plate where the gene of interest is expressed

Answer:

A- Elliptical

B-Irregular

C- Spiral

Answer:

Gamete cell production

Explanation:

if a somatic cell is involved in gamete production, than it cannot undergo mitosis or meiosis, which is cellular division

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Explanation:

Lungs is not a part of circulatory system as it is the part of respiratory system.

Explanation:

Domain archaea holds micro-organisms that is bacteria that has cell wall consist up of peptidoglycan .The eukarya differ from the archea and bacteria in that cells are eukaryotic,meaning they consist up of a membrane enclosed nucleus and other membrane enclosed organelle

Answer:

false

Explanation:

The effects of sigma, time, cost, and other factors. The amount of production improvement that a solution can produce is measured by its sigma impact.

When two chemicals, known as a solvent and a solute, are combined, a solution results. Solution is the result of the union of the solute and solvent. They frequently involve the dilution of one material into another, such when salt is dissolved in water.

A homogenous mixture from one or maybe more solutes that have been dissolved in a solvent is known as a solution. The material that a solute dissolves in to create a homogenous mixture is known as a solvent. The component that dissolves in a solvent to create a homogenous mixture is known as a solute.

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Answer:

Adaptation feature

Explanation:

Light-sensitive cells are scattered in their outer skin, mainly at the ends of their bodies. They allow earthworms to detect light and changes in light intensity. Earthworms don't use a nose, mouth or lungs to breathe like we do. In other words, earthworms don't have eyes like we do. Instead, they can sense light through their skin. These natural light sensors let the earthworms know when they are getting too close to a bright light, such as the sun. Earthworms try to stay out of sunlight because the heat from the sun dries out their skin.

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Answer:

0%

Explanation:

For a female offspring to be colorblind she would need to inherit an X chromosome with the disease from both parents. It is impossible for her father to be a carrier for the disease without having it because he only has one X chromosome so if he carried it he would have symptoms. Therefore, he does not have a chromosome that carries colorblindness so it is not possible for them to have a colorblind daughter.

According to the research, the cytoplasm in a single cell organism and the circulatory system in a human both allow substances to move in the body.

The cytoplasm is the part of the cell where numerous chemical and organic substances are dissolved and suspended, contributing to their movement, necessary for cell physiology.

In this sense, the circulatory system is the functional unit for the supply and distribution of blood to the different parts of the body.

Therefore, we can conclude that the cytoplasm and the circulatory system allow the mobility of substances that are essential for a cell and organism.

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Answer:

The awnser is Yes they did they grew there crops right by the river and when the water rised in the crops they knew that a flood was coming and would prepare for it.

Explanation:

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Answer:

Her friend

Explanation:

Rebekah is attracted to her friend to whom she is talking about that guy over the lunch. When a person is attracted to someone, he starts sharing his personal situations of life. When a person open up about his personal in front of someone it means he is attracted to that person and feels confidence in telling him. Rebekah is also in the same situation where she feels she is attracted to that guy but actually she is attracted to her friend with whom she is having chat about that guy.

Answer:

Microbes living in the soil provide plants with natural protection from pests and diseases. They also are essential for converting nitrogen and other nutrients into forms that plants can use to grow.

Explanation:

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Answer and Explanation:

There are certain guidelines and instructions created in order to be safe while working in the lab, especially when we are manipulating chemical products or any dangerous objects or substances that might hurt us.

There are many aspects considered in these guidelines that refer to the laboratory rules, behavior rules, security procedures under any inconvenient, the appropriate use of the lab equipment, the handle of chemicals or any other substance, the correct use of instruments, among many others.

Wearing safety apparel is one of the aspects considered in the instructions. This specific rule points to the safety of our body or to avoid any accident. Covering our legs, arms, hands and even toes is very important in case of any chemical, fire, or harmful instrument might fall and hurt us. Hair must be tied, clothing should not be loose, any jewelry should not be worn, feet must be completely covered as well as arms and legs, glasses and gloves must be worn, and etcetera.  

Enzymes are proteins that will catalyze chemical reactions and help these reactions go faster because they lower the activation energy of the reaction.

It is necessary to understand which enzymes act under specific conditions (specific pH and specific temperature, for example).

Analyzing the graph, we observed that the enzyme activity was higher when it was at a temperature of 40°C.

It is worth remembering that an enzyme, in addition to specific conditions such as temperature and pH, is also affected according to the availability of its substrate.

Thus, we can say that the enzyme in question works faster when it is in a substrate from 30°C to 50°. Therefore, the alternative "This enzyme works fastest on its subtree between 30°C and 50°C." is the answer.

Some cells in the body have special jobs they are really good at doing. They are called specialized cells.

The human body has lots of tiny cells, and each of them is different and has a special job to do.  This group helps with important things needed to survive.

One type of cells carry oxygen and another type send electrical signals in our body. Specialized cells help the body do important things. Tissues: Groups of similar cells form tissues, such as muscle tissue, connective tissue, and epithelial tissue.

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We can see here that in order to write a research report on a pathogenic bacterium, here is a guide:

The findings of a study or investigation carried out by researchers are presented in a formal document known as a research report.

Remember to include the following in your report:

In academic and scientific settings, research reports are frequently used to convey research findings to other academics, researchers, and industry professionals.

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Answer:

Explanation:

The hypothalamus is an area of the brain that produces hormones that control: Body temperature. Heart rate. Hunger. it is a structure deep within your brain. It's the main link between your endocrine system and your nervous system.

Answer:

Pros:

Cons:

Answer:

Grasslands (?)

Explanation:

You didn't give much context, but grasslands have warm temperatures and are generally dominated by grass--

Tropical grasslands have dry and wet seasons that remain warm all the time.

Temperate grasslands have cold winters and warm summers with some rain.

The most likely answer is tropical grasslands because they are warm all the time. (grasslands is a more open answer)

Answer:

By definition, a body system is primarily comprised of different organs and tissues that work one another to achieve a common body process. These body systems would include:

Explanation:

Circulatory system - concerns with the circulation of blood

Digestive system - breaking down of food particles

Skeletal system - composed of bone structures serving as our body's framework

Nervous system - composed of nerve cells that responds to different stimuli

Respiratory system - concerns of utilizing the entry of oxygen and the exhalation of carbon dioxide.

Of the given options, blood vessels would indicate that an animal is more complex. Blood vessels are a characteristic of complex animals such as vertebrates and some invertebrates, as they enable efficient transportation of oxygen, nutrients, and waste products throughout the body.

The presence of blood vessels also allows for the development of specialized organs and tissues, such as the heart, lungs, and brain. In contrast, segmentation, intracellular digestion, and shells are features found in a variety of animal groups, including both simple and complex organisms. Segmentation, for example, is found in annelids and arthropods, while intracellular digestion is present in many unicellular and multicellular organisms. Shells are found in a wide range of invertebrates, from snails to crustaceans. Therefore, while these traits may be important for specific functions or adaptations, they do not necessarily indicate a higher level of complexity in an animal .

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According to the question intracellular digestion would indicate that an animal is more complex.

Intracellular digestion is the process by which cells break down and absorb nutrients and other molecules. This process is also known as endocytosis. Intracellular digestion occurs through a number of mechanisms, including phagocytosis, pinocytosis, and receptor-mediated endocytosis. In phagocytosis, a cell engulfs a particle or molecule, such as a virus, and then digests it within its membrane-bound vacuole. Pinocytosis involves the uptake of small particles or molecules into the cell through tiny vesicles. Receptor-mediated endocytosis is a process in which specific molecules are taken up into the cell by binding to receptors on its membrane. The molecules are then engulfed and transported into a compartment within the cell, where they are broken down by enzymes.

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Answer:

A and C

Explanation: