i think the answer should be asymptomatic
4- Jamie does an experiment. She charges a pencil by rubbing it with a piece
of silk. Jamie finds that she can use the pencil to attract the silk. Why does
the attraction occur?
Answer:
More info given below.
Explanation:
This attraction occurs as a result of static charge. You see an atom is referred to as the smallest particle of a substance; and when an atom gains or looses electrons it becomes unstable creating a difference in potential. However in this case rubbing induces friction which induces heat. This heat excites the atom to loose electrons creating a negative charge on the silk and a converse positive charge on the pencil.
A scientist is observing an organism under the microscope. The organism was found in salt water, is multicellular, and its cells do not have nuclei. What is most likely true about the organism based on this information?
Answer:
I think the options should be:
It is a protist because it is microscopic.
It is not a protist because its cells do not have nuclei.
It is not a protist because it is multicellular.
It is a protist because it is found in salt water.
If correct, then the answer is option B
Explanation:
The above information about the organism can confirm that the organism is not a protist because it does not possess nuclei. It could be a prokaryote but these are not multicellular but can only be under the condition that maybe each prokaryotic cell aggregates and exist as a colony.
Answer:
the answer is its a protis bc its microscopic .
Explanation:
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What does the nucleus of the cell contain?
Answer:
DNA
Explanation:
Environmental conditions can affect food quality? True or false
Answer:
True
Explanation:
Environmental conditions can affect plants and crops which will affect food quality.
Answer:
True
Explanation:
When a region is unable to supply the volume of certain ingredients due to extreme weather, the entire global food and beverage supply chain is affected. ... But with extreme weather, the demand can suddenly outweigh the supply, having effects on the economy as well.
Subirrigation requires
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What is a chemoautotroph?
A) the green pigment necessary to capture light energy during the process of photosynthesis
B) abiotic factors that are part of an ecosystem
C) organisms are able to transform elements like sulfur, iron, hydrogen, or ammonia into energy
Answer:
C.
Explanation:
A is incorrect as that would be the chlorophyll in a plant cell.
B is not true because chemoautotrophs are living things.
Therefore, C is correct.
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How can scientists investigate the impact of limiting factors on a population?
Answer: No population can increase without limitation. Instead, populations in natural ecosystems increase or decrease in response to the changes in the factors that restrict growth. Many factors influence population densities and growth, and these factors may lead to oscillations in population size over time. It is also often difficult to determine the exact factor limiting growth. Many different factors may combine to produce unexpected results.
Explanation: I hope this helps....
Answer:
Limiting factors include a low food supply and lack of space. Limiting factors can lower birth rates, increase death rates, or lead to emigration. Limiting factors determine the carrying capacity of a population.
As a cell grows larger and increases in volume, which of the following effects on its surface ratio is most likely
A. it's surface area increases, but not as rapidly as it's volume increases
B. it's surface area remains constant
C. the surface area decreases
D. it's surface area increases more rapidly than it's volume increases
Answer:
D
Explanation:
Larger organism increases more in volume than area. That's why larger organism uses respiratory systems or organs and systems instead of simple diffusion for removal of waste and absorption of nutrients.
What feature is the same in the formation of many sedimentary rocks and fossil fuel?many sedimentary rocks and fossil fuels-
A-require material to be buried and exposed to heat amd pressure.
B-are made out of organic material that stores the sun energy
C-form where there are frequent earthquakes and volcanic activity
D- are produced high in the mountains where temperatures are low
Answer:
maybe C i'm so sorry if this is wrong
Explanation:
Organic materials and silt build on top to produce fossil fuels. Heat and pressure transform organic materials into coal, petroleum, or natural gas. Therefore, option (A) is correct.
What are fossil fuels?An extracted and burnt fossil fuel is a hydrocarbon-containing substance that naturally originated in the Earth's crust from the remnants of extinct plants and animals. Coal, oil, and natural gas are the three primary fossil fuels.
Because certain sedimentary rocks contain trapped fossil fuels, sedimentary rocks and fossil fuels are connected. As organic materials and silt build up on top over time, fossil fuels are created. The organic material undergoes a chemical shift under heat and pressure, turning it into coal, oil, or natural gas.
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A lifestyle change that can help conserve energy is A. Using incandescent lights B. Using less of any resource C. Buying the cheapest gas D. Both (A) and (B)
Answer: I would say D
Explanation: Because the cheapest stuff aren't the best item you want but the expensive one so D is my choice both A and B.
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Which of the following did NOT investigate genetics through studying the structure of DNA?
Gregor Mendel
Rosalind Franklin
James Watson
Francis Crick
Answer:
Gregor Mendel
Explanation:
He did not study the structure of DNA.
Different finch species have beaks of different shapes and sizes. What do these beak differences tell us?
Answer:
Differences in beak shapes tell us that all the finches eat the same type of food. Different finch beak shapes are evidence that all Galápagos finches shared a common ancestor a long time ago. Different finch beak shapes are evidence that over time, finch species adapted to different food sources on the islands.
Explanation:
which level of biological classification is the lowest level that butterflies
Answer:
A kingdom
Explanation:
Answer:
Kingdom
Explanation:
edge2020
An active transport process by which a vesicle moves a large substance out of the cell is known as __________.
osmosis
endocytosis
exocytosis
diffusion
Answer:
I'm pretty sure it is exocytosis. Because exocytosis transports vesicles out of the cell through the plasma membrane. Remember it as "exo" = exit.
Answer:
C. Exocytosis
Explanation:
The first thing we notice is that the question says "active transport". Looking at the answer choices, we see that "osmosis" and "diffusion" are options.
However, remember that osmosis (the diffusion of water from high to low concentration) and diffusion (the movement of particles from high to low concentration) are both passive transport; in other words, they don't require an input of energy. So eliminate them.
Now look at endocytosis and exocytosis. "Endo" means "inner", so "endocytosis" means the cell is engulfing a substance and bringing it inside. However, we want the process where a substance is moved out.
"Exo" means "out", so "exocytosis" means to expel something. That matches here, so our answer is C.
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2 Points
Which of the following is a function of the lymph system?
Answer:
The lymphatic system has three main functions: It maintains the balance of fluid between the blood and tissues, known as fluid homeostasis. It forms part of the body’s immune system and helps defend against bacteria and other intruders. It facilitates absorption of fats and fat-soluble nutrients in the digestive system.
Explanation:
The diagram represents a food web in a marine ecosystem which statement best describes the role of two populations within this food web?
A: Phytoplankton and cod are both producers.
B: phytoplankton and zooplankton are both producers.
C: zooplankton are producers, and phytoplankton are consumers.
D: phytoplankton are producers, and cod are consumers.
Answer:
i think it's b
Answer: D.) phytoplankton are producers, and cod are consumers.
Explanation:
A.) is wrong because cod are consumers, not producers
B.) is wrong because zooplankton are consumers too
C.) phytoplankton are producers, and zooplankton are consumers instead.
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What portion of the nervous system controls digestion?
Select one:
O a. Cerebellum
O b. Brain Stem
O c. Spinal Cord
O d. Peripheral System
Answer:
C. Spinal Cord controls the digestion
Explanation:
Spinal Cord is the portion of the nervous system controls digestion. Thus, option C is correct.
What is brain?
The part the nervous system that contains the cerebrum and cerebellum is the brain. The brain is an organ in the body that controls different other activities in the body. Almost everything in the body is controlled by the brain. The three main parts of the brain is; cerebrum, cerebellum, brainstem. The cerebrum controls speech and emotion, the cerebellum controls movement and the brainstem controls sneezing, coughing.
Spinal cord is a part of the nervous system transports information between the brain and other parts of the body. The spinal cord is a tubular and thin structure composed of nervous tissue. The spinal cord functions are to the transmission of neural signals among the brain and other parts of the body. Spinal Cord is necessary because the brain communicates with the body through it.
Thus, the brain sends information by the spinal cord to the peripheral nerves everywhere to the body that serves to regulate the muscles and inner organs.
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what is a pair of chromosomes consisting of 2 chromosomes that are similar in size, shape and gene called
The chart shows information about three different embryos early in their development.
Which is best supported by the information in the chart?
Species X and Y are not related to humans.
Species Y and Z are not related to humans.
Species X and Z are related to humans.
Species X and Y are related to humans.
Answer:
Species X and Y are related to humans.
Explanation:
The chart shows information about three different embryos early in their development. The best supported by the information in the chart is that Species X and Y are related to humans. Thus, option D is correct.
What is an embryo?An embryo refers to the early development stage with respect to the multicellular organism. The organism should be again produced se-xually. Moreover, the development of embryonic should be a portion of the life cycle just done after fertilization and continued via when the structure of the body is formed like tissues and organs.
The development of embryonic i.e. used for proof with respect to evolution should be related species that contain the same embroys.The similarities during the embryo stage of development among different animals are due to the expression of ancient genes.
These ancient genes have the same evolutionary origin, thereby they are homo-logous sequences. For example, fish embryos and human embryos express certain homo-logous genes in the embryos stage, thereby leading to the development of gill slit during this stage.
Therefore,Thus, option D is correct.
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What do heating systems, cooling systems, and heat engines have in common?
They deactivate thermal energy.
They create thermal energy.
They destroy thermal energy.
They transfer thermal energy.
Answer:
They transfer thermal energy.
Explanation:
Energy can not be created or destroyed. Energy cannot be deactivated.
Answer: thay transfer thermal energy
Explanation:
What happens to food after a snail eats it?
Answer:
They Digest The Food
Explanation:
Instead of being chewed, the radula scrapes the food and breaks it, before it passes through the esophagus to continue the digestion process.
Write a summary of the pathways rocks can take to become sedimentary, igneous, and metamorphic rocks.
Answer:
When a certain type of rock, specifically, an igneous rock, is deeper into the ground, and it is under the influence of high temperatures and pressures, it will start to change its molecular structure over time. In addition to the high temperature and pressure, chemical influences are also very important, so the the rock will gradually turn into a metamorphic rock.
Depending on the type of influences, and their intensity as well, one type of rock can evolve into multiple different types of metamorphic rocks.
Wild birds follow herds of zebras and feed off the bugs that are in the zebra's fur. This helps the zebras because the bugs can carry disease. It is helpful to the birds because the bugs are their main source of food. What kind of relationship do the zebras & the birds have?
A. commensalism
B. parasitism
C. mutualism
D. predation
E. competition
Energy flows from ____the to the ____
Pick 2
A: consumer
B: organism
C: decomposer
D: producer
E: species
Answer:
PRODUCER TO CONSUMER
Explanation:
Which functions are aided by swimmerets in crustaceans? Check all that apply. attachment to host gas exchange prey capture reproduction swimming
Answer:
b,d,e
Explanation:
I took the assignment.
The functions that are aided by swimmerets in crustaceans are gas exchange, reproduction, and swimming.
What do you mean by Crustaceans?Crustaceans may be defined as any of a large group of mostly water animals, that have tough outer shells, two pairs of antennae, and limbs that are jointed.
Crustaceans are organisms that belong to aquatic habitats where play performs their functional role and increase their survival rate effectively.
Therefore, the functions that are aided by swimmerets in crustaceans are gas exchange, reproduction, and swimming.
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What happens to 90% of carbon that is not passed to the next trophic level when a primary consumer takes in energy from a producer
Answer:
90% of carbon that is not passed to the next trophic level when a primary consumer takes in energy from a producer is lost as heat or used up by the body.
Explanation:
In the pyramid of energy, energy decreases as an organism move from one tropic level to the next. Only 10% of the energy at any trophic level is transferred to the next level.
The 10% consumed by an organism is stored in the body, the remaining 90% is lost as heat or used up for growth, reproduction, etc
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Answer:
me too I love helping people
Which of the following statements is NOT true?
A) the corn that we grow today has not changed since prehistoric times
B) early humans planted seeds from corn plants with large kernels
C) it took many generations for corn plants to change
D) humans have selectively bred many different types of crops
Answer:
The answer is A.
Explanation:
Corn has gone through many genetic mutations and adaptations from both humans and from their environment.
Answer:
A is the answer
Explanation:
hope this helps
Alicia created a physical model to show how one of the human body systems works. She first adds sand and pebbles to a glass of water. Then, she uses filters to separate the solids from the water.
Which organ(s) serve(s) a similar function in the human body?
A) the heart
B) the glands
C) the kidneys
D) the stomach
Answer:
(c) the kidneys
Explanation:
Your kidneys remove wastes and extra fluid from your body, basically filtering fluids
Si cruzamos dos individuos homocigotos de cobaya, uno negro y otro blanco, y sabemos que el carácter negro es dominante sobre el blanco. Su descendencia tendrá la siguiente características
Answer:
The offspring will be black because they are heterozygous for a dominant trait that is controlled by monogenic inheritance.
Explanation:
Guinea pigs will be heterozygous because they inherit a dominant allele that encodes for the black color and a recessive allele associated with the white color. Heterozygosity is a genetic condition associated with the presence of two alleles at a locus which are inherited from both parents, one from the mother and the other from the father
