Which is denser, 50 mL of water or 500 mL of water?
Answer:
50mL
Explanation:
Density is inversely proportional to volume.
This implies that, for the same mass of water, the higher the volume, the less dense it is.
By comparison 500ml is greater than 50ml
Going by the above analysis, 50ml will be less dense than 500ml because it is smaller.
HELP i’ll brainLIST U
why are water quality standards important?
a. they help protect clean water and improve the quality of polluted water
b. industries would not self regulate and the standards force them to treat unsafe water
c. The standards guarantee that every home in the nation has safe drinking water
d. there is a limit amount of clean water in the world and like oil once it used up it’s gone
What does the number 84 in krypton-84 represent
A.the sum of protons and electrons.
B.the mass number.
C.the atomic number
D.twice the protons.
Scenario
Hemoglobin is a protein that helps transport oxygen in specialized red blood cells. Oxygen is a required component for cellular metabolism (energy production), which powers important cellular processes. A person with sickle cell anemia does not produce normal hemoglobin, as seen below.
Prompt
How is DNA responsible for sickle cell anemia?
Claim: (1-2 sentences)
Evidence: (4 pieces of evidence are needed to get full credit.)
Reasoning: ( A minimum of 3 sentences using vocabulary terms are needed to get full credit.)
Answer:
Explanation:
Sickle cell disease (SCD) is a group of inherited red blood cell disorders. If you have SCD, there is a problem with your hemoglobin. Hemoglobin is a protein in red blood cells that carries oxygen throughout the body. With SCD, the hemoglobin forms into stiff rods within the red blood cells. This changes the shape of the red blood cells. The cells are supposed to be disc-shaped, but this changes them into a crescent, or sickle, shape.
The sickle-shaped cells are not flexible and cannot change shape easily. Many of them burst apart as they move through your blood vessels. The sickle cells usually only last 10 to 20 days, instead of the normal 90 to 120 days. Your body may have trouble making enough new cells to replace the ones that you lost. Because of this, you may not have enough red blood cells. This is a condition called anemia, and it can make you feel tired.
The sickle-shaped cells can also stick to vessel walls, causing a blockage that slows or stops the flow of blood. When this happens, oxygen can't reach nearby tissues. The lack of oxygen can cause attacks of sudden, severe pain, called pain crises. These attacks can occur without warning. If you get one, you might need to go to the hospital for treatment.
Answer:
because DNA can spread anemia.
Explanation:
hope this helps do more research.
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8.33 pts
Question 2
You are at the zoo and watching a lion chew on some meat. You begin to taunt the lion since he is behind the glass and cannot get to you. He
charges the glass and breaks through. Your adrenaline kicks in and you take off running. What system is repressed during your escape?
Answer:
The parasympathetic nervous system is repressed during your escape.
Explanation:
In the exposed example, during your escape from the lion, the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) system are responsible for your body response. They send signals and release adrenaline and noradrenaline to increase your heart biting frequency, and blood pressure, stimulating your respiration and dilating your respiratory tracts.
Once you manage to escape from the lion, and the threat factor is over, the body gets back to normality. At this point, the parasympathetic nervous system is activated. Your body activities become normal again. Your arterial pressure, respiratory frequency, and cardiac frequency get reduced to their normal conditions. You are relaxed and at rest.
When the parasympathetic system is activated, the sympathetic nervous system is not, as they perform in opposite ways.
Which statement is an example of a scientific theory?
A.
All living organisms are composed of one or more cells, which came from pre-existing cells.
B.
Hummingbirds do not like the color white because they visit other colored flowers more often.
C.
The Earth is the third planet from the Sun and has one moon, which orbits the Earth.
D.
The amount that caffeine affects a person's heart rate differs based on the person's age.
Answer:
d
Explanation:
a theory is similar to a hypothesis except has backed up evidence already
Answer:
A
Explanation:
A is always true while the others are sometimes true, C is true in our galaxy, but not others. B is opinionated, different humming birds may like different colors. D is not considering other variables that could effect that situation, such as weight, height, blood pressure, etc. Therefore, A is correct.
A change in body temperature will have which of the following effects on enzymes in the body?
A. A temporary change in the ability of some enzymes to bind with their coenzymes
B. A temporary change in the ability of some enzymes to bind with their substrate
C. A temporary reduction in the concentration of some enzymes in the body
D. A temporary increase in the concentration of some enzymes in the body
Pls help. I think it’s either C or D idk and the question is worth a lot of points :(
Answer:
The answer is B :)
Explanation:
A temporary change in the ability of some enzymes to bind with their substrate. The correct option is B.
Thus, Animals can be categorized into two groups: those that keep a steady body temperature despite varying environmental temperatures and those that have a body temperature that fluctuates with the environment.
Ectotherms are animals that do not regulate their body temperature but instead depend on outside energy to accomplish it.
The name "cold-blooded" has been applied to this category, but it might not be appropriate for an animal living in the desert with a fairly warm body temperature. Animals known as endotherms can experience temperature extremes but rely on internal sources to maintain their body temperature.
Thus, A temporary change in the ability of some enzymes to bind with their substrate. The correct option is B.
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Nitrogen cycle high school
Water has a neutral ph. if water was acidic or alkaline what abundance of ions are present in an acidic substance and what ions are present in an alkaline substance?
Answer:
Calcium and magnesium
Explanation:
Answer:
Calcium and magnesium
Explanation:
How are macromolecules related to energy?
Answer:
Explanation:
While carbohydrates supply immediate energy for the body, lipids — a class of macromolecule — provide long-term energy storage. Lipids, more commonly known as fats, appear in many foods. There are dozens of lipids, many of which are important for living things.
Which sphere in the Earth system is also part of the hydrosphere? O A. Atmosphere O B. Biosphere O C. Geosphere D. Cryosphere
A. atmosphere
explanation: there is water vapor in the atmosphere that is considered to be part of the hydrosphere.
In an ecosystem, atmosphere is a sphere in the Earth system which is also part of the hydrosphere.
What is an ecosystem?
Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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how is the available energy in the marine ecosystem different than the African savanna ecosystem?
Answer:
The main producers in the marine ecosystem are plankton, whereas in the African savanna system, it's trees and grass. And in the marine ecosystem, sunlight is not available for all producers
Explanation:
Solutions that have more OH- than H+ ions are
Answer:
I believe the answer is alkalines
enzymes are important because they contain what?
Answer:
Enzymes are proteins that serve as catalysts for certain chemical reactions. They help the human body properly digest food and break down molecules into smaller units so that the intestines can absorb all its nutrients. Enzymes occur naturally in several foods and eating them raw gives the body an ample supply to help properly digest food, maintain optimum condition of the internal organs, as well as fight cancer cells
Explanation:
Enzymes is on
Sprouts
Nuts and Seeds
Fruits and Vegetables
Papaya and Pineapple
Explain how you could find out whether or not an unknown liquid is water.
We can use the physical properties of water such as density, melting point and boiling point, etc to determine if a liquid is water. Water has a density of 1 gm/cm^3 or 1000 kg/m^3. We can measure the mass of one cm^3 or 1 m^3 of the unknown liquid and check against the mass of equivalent volume of water.
Which food would be most likely to cause a foodborne illness?
A. Lemon juice
B. Baked potato
C. Washed apple
D. Raw sprouts
Answer: raw sprouts
Explanation: Raw sprouts are most likely to cause a foodborne illness because it is raw. Any raw food may have harmful bacteria, and it should be cooked, boiled, or fried. The answer is raw sprouts.
Hope this helps!
Quadriceps are found in the _____.
legs
chest
arms
back
Answer:
Legs
Explanation:
4.
What is the The state reached when
particles continue to move but
in equal amounts in and out of
the cell
What structural components do all the viruses have in common
Answer:
they are bacteria
Explanation:
I WILL GIVE U BRAINLEST what has hands but can’t clap
Answer: clock cant clap
Explanation:
Which feature of Earth is part of the hydrosphere?
air
fish
glaciers
rocks
Answer:
Glacier
Explanation:
It is a form of water.
Answer:
Glaciers
Explanation:
They're found in polar areas in/near water
Hurry 30 Points! I need help!
Answer:
We need the directions. Once provided I will then edit this.
Explanation:
what are key functional groups
how are population sizes kept?
Population size is kept according to the carrying capacity of the land.
help me pleaseee ?!!!
Answer:
A is hydrophobic (non polar) tails
B is hydrophilic (polar) heads
Explanation:
A snake catches and eats a small field mouse. Later that day, a hawk catches the snake and eats it. Which three terms describe the snake? consumer, predator, prey parasite, predator, producer predator, producer, consumer prey, parasite, producer
Answer:
Consumer, predator, and prey.
Explanation:
The snake is a consumer and a predator because it eats or consumes another organism (the mouse), but it is also prey because it is consumed or preyed upon by another predator (the hawk).
The three terms that best describe the snake are consumer, predator, and prey. Thus, the correct option for this question is A.
What is Predator?A predator may be characterized as a type of animal that significantly obtains food by killing and consuming other organisms in the form of food and taking energy for the metabolic processes. These animals hunt and kill other organisms for food. The organisms that are consumed by the predators are known as the prey.
According to the context of this question, when a snake eats a mouse, it is called a consumer and predator because it actually drives energy from the mouse in order to facilitate its metabolic processes. When a hawk when catches a snake and eats it, it is often known as prey, and the hawk is known as a predator in this case.
Therefore, the three terms that best describe the snake are consumer, predator, and prey. Thus, the correct option for this question is A.
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Question 34 (1 point)
is essential if bones are to retain normal proportions and strength during long-bone growth as the body increases in size and
weight
a.Rickets
b.Bone remodeling
c.Ossification
d.Bone maturation
Answer:
b.Bone remodeling
Explanation:
Bone remodeling is also known as bone metabolism is a process in which bones undergo bone resorption where old or mature bines tissue is removed from the skeleton and ossification (formation of new bone tissue).
Bone remodeling is a lifelong process that is influenced by the growth hormone/IGF-1 system that is stimulated when the body increases in size and weight.
Hence, the correct answer is "b.Bone remodeling".
What are 2 characteristics of primary succession, secondary succession. What are 2 Characteristics they share in common?
Answer: Two different types of succession, primary and secondary, have been distinguished. Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. Secondary succession occurs…
Explanation:
Please help! If gastric protease was put in the intestine, do you think it could still carry out its usual function of digestion? Why or why not?
Answer:
Explanation:
An enzyme is a type of protein found within a cell. Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life.
The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.
An enzyme’s shape is tied to its function. Heat, disease, or harsh chemical conditions can damage enzymes and change their shape. When this happens, an enzyme doesn’t work anymore. This affects the body processes the enzyme helped support.
Enzymes are produced naturally in the body.
For example, enzymes are required for proper digestive system function. Digestive enzymes are mostly produced in the pancreas, stomach, and small intestine. But even your salivary glands produce digestive enzymes to start breaking down food molecules while you’re still chewing. You can also take enzymes in pill form if you’re having certain digestive problems.
Answer:
An enzyme is a type of protein found within a cell. Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life.
The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.
An enzyme’s shape is tied to its function. Heat, disease, or harsh chemical conditions can damage enzymes and change their shape. When this happens, an enzyme doesn’t work anymore. This affects the body processes the enzyme helped support.
Enzymes are produced naturally in the body.
For example, enzymes are required for proper digestive system function. Digestive enzymes are mostly produced in the pancreas, stomach, and small intestine. But even your salivary glands produce digestive enzymes to start breaking down food molecules while you’re still chewing. You can also take enzymes in pill form if you’re having certain digestive problems.
Explanation: i just did that question
ILL GIVE BRAINLIEST AND EXTRA POINTS- Who FIRST recognized the cell as the universal unit of life? HINT ITS NOT HOOKE I GOT IT WRONG
1. Virchow
2. Van Leeuwenhoek
3. Schleiden and Schwann
ASAP PLEASEEEEE
Answer:
2. Van Leeuwenhoek
Explanation:
Hooke did discover it, but the cells were dead already. So it's Van Leeuwenhoek.