Answer:
Part A: False
Part B: Liver enzymes may activate some innocuous compounds, making them mutagenic
Explanation:
The Ames test, also known as Salmonella typhimurium reverse mutation assay, is a bacterial short-term technique used to identify if a particular chemical compound may cause mutations in target cells. It has been shown that there exists a positive correlation between carcinogenicity and mutagenicity in the Ames test, but this correlation is not absolute. In the Ames test, a rat liver homogenate (containing liver enzymes) can be added in order to identify substances that are not mutagenic themselves but are metabolized in order to form a mutagen (e.g., benzopyrene).
How do Newton's laws describe the motion of an object ?
I really need help!! Which lists the order of structures that air passes through on its way into the lungs? A. Nose, trachea, bronchi, pharynx. B. Nose, bronchi, trachea, pharynx. C. Nose, pharynx, trachea, bronchi. D. Nose, pharynx, bronchi, trachea
Answer:
Im pretty sure it's C I help my sister with her collage class for this sorta thing and if I remember correctly this is correct :)
have a great day
PLSSS HELP IMMEDIATELY!!!!!! i need help rn only answer if u know, i’ll mark brainiest!
Answer:
D is your answer
Explanation:
PLEASE HELP!!!!
Photoperiodism is one example of how a plant responds to changing seasonal conditions. Why is it important for plants to be able to respond to seasonal changes?
Answer:
It is important because plants respond to light depend, logically enough, on the plant's ability to sense light. Phototropism is a directional response that allows plants to grow towards, or in some cases away from, a source of light. Photoperiodism is the regulation of physiology or development in response to day length.
Which body system in humans has a similar function to the gills in a fish?
а
b
Circulatory System
Digestive System
Respiratory System
Endocrine System
Od
Answer:
1. respiratory System
Explanation:
Fish exchange gases by pulling oxygen water through their mouths and pumping it over their gills. So Basically, Its Similar to Our Lungs For us to breathe Like Fish.
Body system in humans which has a similar function to the gills in a fish is respiratory system.
What is a gill ?
A gill is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide.
What is a respiratory system ?The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
The primary purpose of gills and lungs in humans is to exchange gases, take oxygen in and release carbon dioxide out. Both lungs and gills have a bed of very small blood vessels with thin walls that the gases can easily travel across.To know more about respiratory system here
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true or false
A niche includes just the biotic parts of an environment
Answer: Im pretty sure its true
Explanation:
An organisms niche includes its environment, behaviors, and interactions. It also includes its role within the environment.
need help asap, will mark brainliest. PLSSS
How would an increase in the amount of solar energy available most likely affect a terrestrial community?
The amount of atmospheric carbon would decrease.
The amount of nitrogen in biomass would decrease.
The amount of sedimentary phosphorus would increase.
The amount of water in reservoirs would increase. (ik its not this one)
what process adds oxygen to ocean water?
Answer: photosynthesis
Explanation: this person explained: https://brainly.com/question/1147634
_______ Which nutrients should we limit and eat less to promote good health?
a. protein, sugars and total fat
b. sugars, fiber and total fat
c. total fat, cholesterol and sodium
c. total fat, cholesterol and sodium
Which of the following best explains how minerals get into streams?
Rainwater that is high in minerals from the atmosphere falls into the stream.
The stream absorbs minerals from the plants growing in and around its banks.
Rainwater dissolves minerals out of the rocks and soil along the stream during runoff.
When water evaporates from the ocean, it takes minerals with it and redeposits them as rainwater into the stream.
help.................
Answer:
I would say B.
de-forestation is definitely not the answer. and introducing non native species is usually a big no no for the ecosystem.
Answer:
b
Explanation:
if there is nothing to kill bees with then they wont die.
Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights.
A graph entitled Percentage of Babies born at Different Weights has weight in pounds on the horizontal axis, and percentage on the vertical axis. A small percentage of babies are born at the low and higher birth weights, and a greater amount are around 7 to 8 pounds.
Which statement is a valid claim that could be made using the data in the graph?
Directional selection is occurring because the graph favors an extreme.
Stabilizing selection is occurring because the average is favored.
Disruptive selection is occurring because the two extremes are favored.
Biodiversity variation is occurring because there is an increase in trait variation.
Answer:
C
Explanation:
Otherwise people wouldn’t have differences
Answer:
C!!! :))
Explanation:
I tookt the test and got it right.
Fossil fuels store energy from the sun as
Fuels, including fossil fuels, are energy sources. Fossil fuels are powered by solar energy, which also powers photosynthesis, which transforms carbon dioxide and water into the fundamental constituents of prehistoric plants and animals.
What Fossil fuels store energy from the sun?Biomass, fossil fuels, as well as some renewable energies like wind and solar power, are all derived from the sun. Simple solar energy in a secondary form is what fossil fuels are.
This energy is then released millions of years later, when these plants have transformed into fossil fuels.
Therefore, Simple solar energy in a secondary form is what fossil fuels are. Through photosynthesis, the sun's initial energy is collected and stored in chemical bonds as plants develop.
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HELP ITS FOR SCIENCE
Subject A (without diabetes)
Food type Starting blood glucose level (mg/dL) Blood glucose level after 1 hour (mg/dL) Blood glucose level after 2 hours (mg/dL) Blood glucose level after 3 hours (mg/dL)
candy 100
nutrient 100
fats 100
dairy 100
Subject B (with type 1 diabetes)
Food type Starting blood glucose level (mg/dL) Blood glucose level after 1 hour (mg/dL) Blood glucose level after 2 hours (mg/dL) Blood glucose level after 3 hours (mg/dL)
candy 100
nutrients 100
fats 100
dairy 100
What will the glucose levels be through out the next 3 hours? Put an answer for 1, 2, and the third hour for each box.
Answer:
Increases after each hour.
Explanation:
The blood glucose level will be increases after each hour in Subject B because no production of insulin. Due to this disease, the body can't regulate the level of glucose so by eating sweets like candy increases blood sugar in the body of subject B. The main reason of increase blood glucose level is the no production of insulin in the body of type 1 diabetes patient because this insulin hormone regulate the blood glucose level in the blood.
Answer:
subject A hour one 160 hour two 220 hour three 280
Explanation:ya welcome for subject b 1OO EVERY HOUR
A plant cell contains a large membrane bound, sac-like structure that stores materials such as water, salts, proteins, and carbohydrates. When this sac-like structure is full it makes the cell rigid, which enables a plant to stand up straight. This sac-like structure is most likely what organelle?
A. nucleus
B. vacuole
C. chloroplast
D. mitochondrion
A man has Huntington's disease (a dominant trait) and a heterozygous genotype. He has four children with a woman who does not have Huntington's disease. What are the odds their children will inherit Huntington's disease?
Answer:
50/50
Explanation:
How is energy produced by respiration stored
Answer:
Explanation:
Cellular respiration converts the chemical energy stored in glucose into chemical energy stored in the ATP molecule. The cells break glucose down into carbon dioxide and water while producing energy that they store in ATP molecules.
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Which organelle of a cell functions similarly to the envelope of a virus and why?
A
cilia - The envelope is found in a similar location on the organism.
B
flagella - The envelope is responsible for the organism's movement.
С
cytoplasm - The envelope contains enzymes that help the organism metabolize substances.
D
cell membrane - The envelope controls the flow of molecules both into and out of the organism.
Answer:
The answer is D.Cell membrane
Unrelated or distantly related species may come to resemble each other due to what
What are some actions you can take to reduce your carbon footprint?
Answer: learn the 5 R's: refuse, reduce, reuse, rot, recycle: Going zero waste is a great step towards combating climate change. ...
bike more and drive less: ...
conserve water and protect our waterways: ...
eat seasonally, locally, and more plants: ...
switch to sustainable, clean energy: Individuals and corporations can reduce their respective carbon footprints by installing energy-efficient lighting, adding insulation in buildings, or using renewable energy sources to generate the electricity they require. For example, electricity generation from wind power produces no direct carbon emissions.
Explanation:
The amount of nutrients present in a trophic level is called living state
The amount of carbon is present in the earth which is used to transfer from one component to another is called carbon footprint.
On earth, the emission of carbon is a major issue and we have to resolve it as soon as possible.
These are the following ways to reduce the carbon footprint:-
Stop deforestationReduce hunting.Planting more trees.Minimize the use of automobiles.Hence, the answer is mentioned is above.
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I NEED HELP ASAPPP PLEASE
C. When the arm extends (straightens), which muscle contracts?
Explanation:
When your biceps muscle in your upper arm contracts, it pulls your lower arm in towards your shoulder. However, when it relaxes, your biceps cannot push your arm back out. To do this, your triceps muscle, on the underside of your upper arm, contracts and straightens your arm out.
Answer:
When your biceps muscle in your higher arm contracts, it pulls your lower arm in to your shoulder. when it relaxes, your biceps cant push your arm back out. and straightens your arm out.
Explanation:
What kingdoms contain bacteria?
Which ones out of this??
Answer:
Both Eubacteria and Archaebacteria. There are two kingdoms of prokaryotes.
Explanation:
500pt biologiofyyyyy
Answer:
Im sorry this isnt the answer You may report me if you wish
Explanation:
I know i may be unwanted here but I just want you to know that you are incredible and that I love you for you! You are special to everyone you meet, and should not change who you are. I know your life may be tough, but you are strong and can get through it!
the arctic region is a treeless plain with frozen ground. true or false
Answer: Its True, They are largely treeless because its the arctic.
Why is the water cycle important for ecosystems?(1 point) The water cycle helps recycle and transport carbon around the planet. The cycle replenishes the carbon supply of ecosystems. The water cycle uses photosynthesis to make clouds. These clouds make surface water that animals drink to survive in their ecosystem. The water cycle permanently removes water from underground and large bodies of water and transports it to terrestrial ecosystems that need water. The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Answer: The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Explanation:
The water cycle simply refers to how water continuously move within the Earth. It is also called the hydrological circle. Water cycle depicts many processes such as how water evaorates into vapor, how clouds are formed through condensation and then sent back to the Earth as either rain or snow.
Based on the options given, the water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems.
Answer:
The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Explanation:
trust me i did the test
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Roses now come in several colors such as orange and purple. Which process are florist most likely to use in creating these new flowers?
a. Genetic cloning
b. Protein synthesis
c. Artificial selection
d. Asexual reproduction
This moray eel has a small fish cleaning between its teeth. The eel gets a
clean mouth while the cleaner fish gets a nice meal.
A.Mutualism
B.Commensalism
C.Parasitism
Answer:
A. Mutualism
Explanation:
The moray eel and the small fish are both getting something out of it. Meaning they both benefit from each other.
a tick living
on the body of a deer is an example of:
1. mutualism
2. commensalism
3. parasitism
Answer:
3: Parasitism.
Ticks are parasites!
which student made observations of a community of organisms?
1. Student 1
2. Student 2
3. Student 3
4. Student 4
Answer:
student 2
Explanation:
I has different types of birds.
Community of organism is a group of different species living or around each other in the same habitat.
¿Qué habría ocurrido con la mariposa del abedul durante la revolución industrial si no hubieran existido mariposas oscuras?