The division between the upper and lower respiratory system is around the nasopharynx. True/False.

The following compounds can be classified as lipids: steroids, saturated fatty acids, phospholipids, unsaturated fatty acids.

WHAT ARE LIPIDS:

Therefore, the following compounds can be classified as lipids: steroids, saturated fatty acids, phospholipids, unsaturated fatty acids

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Correct answer for an age-relationship based on relative dating is option A : australopithecines evolved before homo erectus.

Relative dating is a method of determining the age of fossils or artefacts by arranging them in a chronological order. It does not provide an exact date, but rather determines an object's age by comparing it to something else in a time sequence.

Option A is an example of a relative dating-based age-relationship because it suggests a relative order of appearance of australopithecines and Homo erectus. It does not provide an exact date or time period for either species' appearance, but it does provide a relative relationship between the two, with australopithecines appearing before Homo erectus. This is a type of relative dating based on the order in which the species appeared.

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Question should like this :

which of the following is an example of an age-relationship based on relative dating? question 5 options:

A. australopithecines evolved before homo erectus.

B. australopithecines were alive 3.2 million years ago.

C. clovis points have been dated at 11,000 years old in North America

D. the neanderthals became extinct 35,000 years ago.

Answer: option A is correct

Explanation:

they don't have to spend time and energy finding a mate so they can just keep reproducing

Answer:

A missense mutation is a mistake in the DNA which results in the wrong amino acid being incorporated into a protein because of change, that single DNA sequence change, results in a different amino acid codon which the ribosome recognizes. ... More frequently, it causes the protein to be less effective in doing its job.

Answer:

because it can change who you are ,

Chondrichthyes share many characteristics with bony fish.

Some of the characteristics they share are:

• They are both vertebrates.

• They are cold-blooded

• Their hearts have compartments

• They have caudal fins or tail fins with two lobes.

• They belong to the Kingdom Animalia

Answer:

D. DDT

Explanation:

DDT is highly persistent in the environment means that it break down very slowly in the environment. The half-life for DDT is from 2 to 15 years. Half-life is the time needed for the degradation of half of the compound. Persistent bio-accumulative toxic substances (PBTs) are chemicals that break down slowly in the environment and its accumulation in living organisms are toxic. Some PBTs are dispersed through air currents while some uses other environmental pathways, resulting in contamination of regions far from their points of origin.

To perform these roles, the plasma membrane needs lipids, which make a semi-permeable barrier between the cell and its environment. It also needs proteins, which are involved in cross-membrane transport and cell communication, and carbohydrates (sugars and sugar chains), which decorate both the proteins and lipids and help cells recognize each other.

One of the concerns with the human genome project is that once your genetic structure is known, it could potentially be used against you in a discriminatory manner, such as denial of insurance coverage or employment opportunities.

Another concern is the potential misuse of genetic information for eugenics or to create designer babies. Additionally, there are concerns about privacy and the possibility of genetic information being leaked. The ethical implications of genetic testing and the use of genetic information are complex and require careful consideration and regulation to ensure that individuals' rights and privacy are protected, and that the technology is used for the benefit of humanity.

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Fossil remains of animals and plants discovered alongside the earliest hominins, dating back 4 to 7 million years ago, suggest that they inhabited a savannah environment.

The term "environment" refers to the surroundings or conditions in which living organisms exist. It encompasses the physical, biological, and social factors that influence or interact with organisms. The environment includes elements such as air, water, soil, climate, vegetation, or the presence of other living organisms. It also encompasses human-made structures, technology, and cultural systems. The environment plays a crucial role in shaping ecosystems, supporting biodiversity, and providing resources necessary for the sustenance and well-being of organisms. Understanding and preserving the environment is essential for maintaining ecological balance and promoting sustainable development.

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Demetrius's results suggest that digestive enzymes are crucial to maintaining homeostasis in the body by breaking down large molecules of food into smaller, more easily absorbed molecules.

Digestive enzymes are produced by different organs of the digestive system such as the salivary glands, stomach, pancreas and small intestine. These enzymes work together to break down food into smaller molecules that can be absorbed and utilized by the body's cells.

Homeostasis is the maintenance of a stable internal environment in the body. The body needs to maintain the correct balance of nutrients, electrolytes, and other substances in order to function properly. Digestive enzymes are essential for maintaining this balance by breaking down food into the correct molecules that can be used by the body.

Moreover, Digestive enzymes also play a key role in the regulation of blood sugar levels, by breaking down carbohydrates into glucose, which can be used as an energy source by the body, preventing fluctuations in blood sugar levels and avoiding conditions such as diabetes.

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Answer:

an enzyme substrate is the material upon which an enzyme acts.

Explanation:

1. To distinguish between Enterobacter aerogenes and Serratia fonticola, I picked the test for citrate utilization.

2. The test for citrate utilization distinguishes between Enterobacter aerogenes (positive result) and Serratia fonticola (negative result) based on their ability to use citrate as a sole source of carbon.

The test for citrate utilization distinguishes between Enterobacter aerogenes and Serratia fonticola, based on their ability to use citrate as a sole source of carbon. Enterobacter aerogenes can utilize citrate, while Serratia fonticola cannot.

Enterobacter aerogenes is a Gram-negative, rod-shaped bacterium that is commonly found in the environment and can cause infections in immunocompromised individuals. It is often resistant to multiple antibiotics, making it difficult to treat.

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The question is -

My two organisms are Enterobacter aerogenes and Serratia fonticola

questions:

1. what test did you pick to distinguish your two organisms?

2. what characteristics distinguish between the two organisms and what are the expected results based on the test you picked?

Answer: The answer is below:

Explanation:

QUESTION 1: The modern version of the cell theory includes several new ideas that reflect the knowledge that has been gained since the mid-1800s. These include the knowledge that energy flows within cells, hereditary information is passed from cell to cell, and cells are made of the same basic chemical components.

QUESTION 2:  The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division.

I tried my best to hurry! :)

Answer:

Since this octopus is so shy and elusive (and spread out across a wide area), the population size is currently unknown. Three of the four species are classified by the IUCN Red List as species of least concern.

Explanation:

Blue-ringed octopuses are common all around Australia's coastline. "But unless you're looking for them, encounters tend to be rare.

Explanation:

Job Title: Pollinator

Special Skills needed: Ability to reach deep into a long hole (no innuendo implied)

Special equipment or tools needed: Agility and (wings or beak)

Compensation: Nectar

Answer:

Job Title: Pollinator

Special Skills needed: Ability to reach deep into a long hole (no innuendo implied)

Special equipment or tools needed: Agility and (wings or beak)

Compensation: Nectar

Please mark the other person as brainlest

a. it is the first phase in both aerobic and anaerobic respiration

Glycolysis is the first phase of both aerobic and anaerobic respiration, which are two different processes that cells use to produce energy from glucose. During glycolysis, a molecule of glucose is broken down into two molecules of pyruvate, and energy is released in the form of ATP. This process does not involve the formation of glucose molecules or the breaking of ATP, and it is not a phase of photosynthesis, which is the process by which plants produce energy from sunlight.

Answer:

urinary and cardiovascular.

Explanation:

The two organ systems that work together to regulate most aspects of the body's water balance are...

urinary and cardiovascular.

Answer:

Vì thế sinh vật nhân thực được phân chia thành 3 nhóm chủ yếu là dị dưỡng (Animalia, Fungi, Protozoa) và 2 nhóm chủ yếu là quang hợp, (Plantae, bao gồm cả tảo đỏ, tảo lục và Chromista.

Answer:

Lipids

Explanation:

Lipids are a source of long term energy.

Answer:

B. high mutation rate; vaccine

Explanation:

The enormous genetic diversity of HIV is largely the result of its high mutation rate, and it has made it especially difficult to create a vaccine against the virus.

This ultimately implies that, the high mutation or replication rate of the human immunodeficiency virus (HIV) owing to its enormous genetic diversity has made it extremely difficult to develop an effective and accurate vaccine against the virus.

Hence, the human immunodeficiency virus (HIV) possesses a high error rate

The statement that correctly describes the event(s) in the axon when it reaches threshold is: The voltage-gated channels for sodium open. The correct answer is option d.

When the axon reaches the threshold potential, the voltage-gated sodium channels in the membrane open, allowing sodium ions to rapidly flow into the axon. This influx of sodium ions generates the rising phase of the action potential, leading to depolarization of the membrane.

The opening of voltage-gated sodium channels is a key event in initiating and propagating the action potential along the axon.

Voltage-gated channels are membrane proteins that regulate the flow of ions across the cell membrane in response to changes in membrane potential. These channels open or close in response to changes in voltage across the cell membrane.

The correct answer is option d.

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Light and water should be kept the same for control and experimental groups.

To ensure that the growth of poison ivy is only affected by the concentration of carbon dioxide, it is essential to keep all other environmental factors the same. Light is an essential factor for plant growth, and any difference in light exposure could significantly affect plant growth.

Therefore, the same amount of light exposure should be maintained for both the control and experimental groups. Similarly, water is also crucial for plant growth, and any variation in water supply could affect the growth rate. Thus, keeping the same amount of water supply for both groups is crucial to eliminate any confounding variables.

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The taiga differ from other forest ecosystems:

The taiga has many features that different it from the other forest biomes Evergreen trees - This forest is protected with evergreen, or coniferous, trees.

These are trees that does not drop their leaves, or needles, in the winter.

Thus, option "A and B" are correct,  This forest is protected with evergreen, or coniferous, trees.

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Answer:

Explanation:

The question says "from other forest ecosystems".

There are three types of forest ecosystems: taiga, temperate and rainforest. Forests ecosystems typically receive a good amount of rain, but there is slightly less rainfall in the taiga forest than in a temperate forest or rainforest.

(*) Sorry for my late answer but I hope this helps others that are looking for this.

Answer:

The activity of speed up the process.

Explanation:

Reverse transcriptase is an enzyme encoded from the genetic material of retroviruses that accelerate or speed up the process of  transcription of retrovirus ribonucleic acid into deoxyribonucleic acid. Reverse transcriptase enzyme is also called RNA-directed DNA polymerase. Some retroviruses such as human immunodeficiency virus (HIV) and avian myeloblastosis virus used this Reverse transcriptase enzyme.

Answer:

b: time

Explanation:

When meteorologists need to make a forecast they analyze different measurements in order to accurately make a forecast, these include patterns of winds, pressure, pressure change, temperature, humidity, clouds, and hygrometers. From the answers provided the one measurement that is not used is time. Mainly due to the fact that weather does not depend on the time of day, and any type of weather can be present at any time if the right circumstances exist.

Answer:

Wind direction

Explanation:

Weather forecast is simply known to be a way of telling the people of how the weather condition of a particular place will be at a particular time. This usually shows whether the day or time will be rainy or sunny.

In this case, what is not normally considered in whether forecast is wind direction. While other factors are always ingredients of weather forecasting.

The statement ''Risk factors predict disease'' is true because risk factors are not always the direct cause of the disease but they can increase the likelihood of developing the disease. The correct answer is option A.

A disease is a condition in which a part or the whole body is not functioning properly and the health of the person is not well. And risk factors are conditions or behaviors that are capable of increasing an individual's chances of developing a disease. Risk factors may include factors such as smoking, high blood pressure, sedentary lifestyle, and high cholesterol levels.

The presence of risk factors increases the probability of developing a disease, but it does not guarantee that the disease will occur. For example, smoking is a well-known risk factor for lung cancer. So, If someone is a smoker, they have an increased risk of developing lung cancer compared to a non-smoker but not all smokers will develop lung cancer, and there are cases where non-smokers also develop the disease.

Therefore, option ''A'' is correct.

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The theory of plate tectonics states that the Earth's surface is made up of several large, moving plates. These plates are constantly moving, colliding, and pulling apart due to forces generated by the movement of material in the Earth's mantle. The movement of these plates causes the creation of earthquakes, volcanoes, and mountain ranges as well as the formation of oceanic crust and the reshaping of continents over time. The movement of the plate is caused by the convection currents in the Earth's mantle, which causes the plate to move in a slow and steady way.