Help.. Psychological drug dependence means that
a. the body cannot function properly without a drug
b. a person has an emotional need for a drug
c. a person will become mentally ill from a drug
d. withdrawal will occur when the drug is stopped
Answer:
b. a person has an emotional need for a drug
Your teacher places the following supplies on a table: water, hot plate, salt, beakers, food coloring, and test tubes. Using the supplies listed, how could you plan an investigation of how differences in temperature and salinity affect ocean currents? Include the following vocabulary in your explanation: salinity, density, temperature, wind, surface currents, deep currents. Make sure to include specific details and steps.
Answer:
Higher saline water is more dense that lower saline water
Explanation:
The ocean salinity varies with rainfall, run off from estuaries and the pattern of ocean current. In addition to this, higher temperature affects the kinetic movement of water as well as the salinity. The movement of the wind also contributes to the movement of water and the particles and solute distribution. The surface currents do not do much to mix the entire body of water and this is because this is from less dense areas. Deep currents factor in to mix just the heavier more dense layers.
In planning an experiment to test this one would do two experiments.
First: Heat 4 batches of water at different temperatures and color the different temperatures with different food coloring. Next layer the water carefully from hottest to coldest in a beaker and then from coldest to hottest in another beaker.
Second: Dissolve salt in 4 batches of water increasing the amount by half each time. Color each with different food colouring and layer the salty water from least salt to most salt in a beaker. Layer the water from most salt to least salt in another beaker.
Make observations:
The cooler water should be more dense and sink to the bottom while the saltier water should be more dense and sink to the bottom.
Complexity is a measure of how difficult it is to understand something. What is an example of complexity in the natural world?
Answer:
Answer:
Multicellular organism is the example of complexity of the natural world.
Explanation:
Multicellular organism such as human which is made of billions of cell. Each cell perform a specific function. The function of one organ is different from the other organ. For example, brain of human is made of millions of neurons which takes instructions from brain to the organs and bring messages from organs to the nervous system in the form of electrical impulses. In short every system in our body is full of complexity.
Where, in the cell, are proteins/enzymes constructed from the mRNA code
Answer:
Ribosomes
DNA is stored in the nucleus, while proteins are assembled from free amino acids in the cytoplasm in structures called ribosomes
5.
Leaf cells have more chloroplasts than cells in other parts of the plant
Answer:
Chloroplasts are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells. They then use the ATP and NADPH to make organic molecules from carbon dioxide in a process known as the Calvin cycle. Chloroplasts carry out a number of other functions, including fatty acid synthesis, much amino acid synthesis, and the immune response in plants. The number of chloroplasts per cell varies from one, in unicellular algae, up to 100 in plants like Arabidopsis and wheat.
With more carbon in the atmosphere, what do you think will happen to the environment
Answer:
Global warming
Extra carbon dioxide in the atmosphere will increases the greenhouse effect. More thermal energy is trapped by the atmosphere, causing the planet to become warmer than it would be naturally. That increases the Earth's temperature which is also called Global Warming
Why are "Outer planets" also called gas giants?
Answer:
"Outer" planets are also called gas giants because they are large planets that have deep, massive atmospheres made mostly of gas.
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Hope this helps :)
Which of the following is an example of stored energy? Select all that apply. *
A.a gallon of gasoline
B.water flowing downhill
C.a car battery
D.a lake at the top of a hill
E.a spinning top
Answer:
C
Explanation:
Which organisms would have the most similar traits?
Answer:
Organisms in the same family will have the most similar traits.
Organisms mostly will be the same when they are in the same family, and if there are two organisms in different families that look alike, it will be a coincidence.
Answer: organisms in the same order
Yeet Skeet
Edit: Nevermind! I figured it out!!
Use the information in the table to calculate the ages of the meteorites. The half-life of potassium-40 is 1.3 billion years.
Meteorite Initial Amount(g) Final Amount(g)
1 30 7.5
2 80 5
3 100 12.5
Use your calculations to answer the questions.
How old is meteorite 1?
How old is meteorite 2?
How old is meteorite 3?
Answer:
meteorite 1- 2.6 billion
meteorite 2- 5.2 billion
meteorite 3- 3.9 billion
Answer:
meteorite 1- 2.6 billion
meteorite 2- 5.2 billion
meteorite 3- 3.9 billion
Explanation:
Are prions considered organisms? A. Yes, because they can cause disease. B. Yes, because they can make more of themselves. C. No, because they are not made of cells. D. No, because they can't make their own food.
Answer: the answer is c no, because they are not made up of cells
Explanation: hope this help please mark as brainliest
A gene mutation is when chemical changes occur in DNA of individual cells. True or False
Answer:True
Explanation:
Answer:
true
Explanation:
so....... how are u?
Answer:
Good, I guess. I just feel dead.
Explanation:
I am just bored with this quarantine, duh!
why this is a dull place??
no one is here??
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hope it helps you
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ek like to banta he yar
❤️❤️.
Answer:
bruh
Explanation:
bruh
Explain the production of monoclonal antibodies and give an example of how they are used.
Answer:
Monoclonal antibodies (mAbs) are produced by introducing an antigen to a mouse and then fusing polyclonal B cells from the mouse's spleen to myeloma cells. The resulting hybridoma cells are cultured and continue to produce antibodies to the antigen.
we use this for
:The use of monoclonal antibodies to treat diseases is called immunotherapy therapy because each type of monoclonal antibody will target a specific targeted antigen in the body. Uses for monoclonal antibodies include: Cancer. Rheumatoid arthritis.
Identify the type of energy described in each sentence.
gravitational energy
mechanical energy
chemical energy
electrical energy
thermal energy
nuclear energy
radiant energy
The body stores lipids ingested as fat and uses this energy when needed.
A person’s hat falls off and lands on the ground.
A wave of water pushes a surfer to shore.
A burner on a stove heats up a tea kettle.
A power plant splits atoms to generate power for a city.
A nerve sends an impulse to another nerve.
A plant absorbs the Sun’s rays to start the process of photosynthesis.
Answer:
chemical energy: The body stores lipids ingested as fat and uses this energy when needed.
gravitational energy: A person’s hat falls off and lands on the ground.
mechanical energy: A wave of water pushes a surfer to shore.
thermal energy: A burner on a stove heats up a tea kettle.
nuclear energy: A power plant splits atoms to generate power for a city.
electrical energy: A nerve sends an impulse to another nerve.
radiant energy: A plant absorbs the Sun’s rays to start the process of photosynthesis.
Explanation:
Why is water considered to be abiotic?
Answer: Water is a nonliving factor so it is considered abiotic. Abiotic is any nonliving factor of the ecosystem, With said that water is not living so it is considered abiotic. Hope this helps.
Why do we need human dna
DNA. Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things.
All known cellular life and some viruses contain DNA. The main role of DNA in the cell is the long-term storage of information.
We need human DNA since it give us the long term info storage, which is needed
DNA contains instructions for development, survival, and reproduction. DNA sequences must be translated into signals to make proteins, which do most of our body's job.
What is human genome?DNA stores the instructions that are necessary for an organism to grow, maintain its existence, and reproduce itself. In order for these duties to be carried out, the sequences of DNA need to be transformed into messages that can be utilized in the production of proteins. Proteins are the complex molecules that are responsible for the majority of the work that is done in our bodies.
The human genome is comprised of all of the nucleic acid sequences that are found in humans. These sequences are stored as DNA within the 23 chromosome pairs that are found in the nucleus of cells, as well as in a tiny DNA molecule that is located within the mitochondria of each individual cell. In most cases, these are considered to be two distinct components: the nuclear genome and the mitochondrial genome.
Learn more about human genome, here:
https://brainly.com/question/25168976
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Is someone walking up to you from behind? A friend is walking up to you from behind. What three observations would help you predict when they would reach you?
Answer:
Three things i will observe are :
The sound of their movement when approaching meThe frequency of their foot stepThe distance they are away from meExplanation:
In my opinion, the three points highlighted above can go a long way to help predict how soon or when they would reach meThe sound of their foot steps will determine how far or close they are from from me, if the sound is loud they are closest, if it is low then they are at a distance father.The frequency of their foot steps tell me about the speed with which they are approaching me, if the frequency is high, then they will approach sooner and vice versaThe distance they are way from me can help estimate when they would reach me, though still dependent on items one and two above.How to use punnet squares to caclulate ratios?
What is a “shared derived character”?
Answer:
A shared character is one that two lineages have in common, and a derived character is one that evolved in the lineage leading up to a clade and that sets members of that clade apart from other individuals.
Answer:
A shared character is one that two lineages have in common, and a derived character is one that evolved in the lineage leading up to a clade and that sets members of that clade apart from other individuals. Shared derived characters can be used to group organisms into clades. For example, amphibians, turtles, lizards, snakes, crocodiles, birds and mammals all have, or historically had, four limbs. If you look at a modern snake you might not see obvious limbs, but fossils show that ancient snakes did have limbs, and some modern snakes actually do retain rudimentary limbs. Four limbs is a shared derived character inherited from a common ancestor that helps set apart this particular clade of vertebrates.
2 Points
Which best describes the blood flowing in a vein?
O A. It moves toward the heart.
B. It contains no red blood cells.
O C. It is oxygen rich.
D. It contains no white blood cells.
What’s the biggest change to San Joaquin Valley ecosystems caused by humans in the past 150 years?
Answer:
the biggest change to San Joaquin Valley ecosystems caused by humans in the past 150 years is the shortage of water in the river.
Explanation:
During 150 years, the San Joaquin Valley ecosystems was extremely damaged by the human activities such as building of dams and diversion of river. The San Joaquin Valley has a productive agriculture land due to availability of water. Due to building of dams, the amount of water in the river is decreases and also the population of many fish species decreases. this is because of the disturbance occurs in their natural habitat due to human activities.
What is the main function of any organism's reproductive system?
A) to remove wastes from the body
B) to process food and turn it into energy
C) to distribute oxygen throughout the body
D) to create new individuals within the species
Answer:
D
Explanation:
The reproductive system is another word for genital system, which means it would create new species
Answer:
The answer is D
Explanation:
What does gel electrophoresis do?
Answer:
A. separates DNA fragments so they can be seen
How is the epithelium suited for the substances ?
Answer:
Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated.
Epithelial cells have two surfaces that differ in both structure and function.
The epithelial cells are nourished by substances diffusing from blood vessels in the underlying connective tissue. One side of the epithelial cell is oriented towards the surface of the tissue, body cavity, or external environment and the other surface is joined to a basement membrane. The basement layer is non-cellular in nature and helps to cement the epithelial tissue to the underlying structures.
Where is dna found
1. Molecules
2. Elements
3.cells
Answer:
3
Explanation:
Answer:
the dna is found in the cell nucleus
Explanation:
Marijuana is a(n)
a. depressant
b. stimulant
c. hallucinogen
d. opiate
Answer:
Marijuana is a stimulant.
Answer: Marijuana is a stimulant.
If the outside temperature gets colder, a dolphin's body temperature will:
O get warmer
O get colder
• stay they same
NEXT QUESTION
ASK FOR HELP
Answer:
The answer is get warmer.
Explanation:
Since dolphins are considered mammals, they are warm-blooded, and therefore cannot survive very long in the cold. Their body temperature is designed to counteract the temperature fluctuations outside.
I hope this helps! :)
what is the term for when the moon appears to be filling with light
Answer:
full moon
Explanation:
