ST): Computer Scored Unit Test
Question 25 of 25
Which best describes the nucleus of an atom?
O A. It is the part of the atom with the greatest mass.
O B. It is the negatively charged part of the atom.
C. It is where the electrons and protons are located.
O D. It is where all of the particles of the atom are located.
SUBMIT
Answers
Answer:There are fewer atoms in the reactants than in the products, and the total mass is less in the reactants than in the products.
Explanation:
just did it
Related Questions
PLEASE HELP ASAP NOT BIOLOGY JUST SCIENCE PLEASE PLEASE
During the nitrogen cycle, plants take in nitrogen compounds through their BLANK
Answers
Answer:
Roots
Explanation:
Answer:
roots
Explanation:
true or FALSE marbling impacts the yield grade of beef carcasses and factors such as muscling and trimness impact the quality grade of beef carcasses.
Answers
true marbling impacts the yield grade of beef carcasses and factors such as muscling and trimness impact the quality grade of beef carcasses.
What elements influence carcass yield?Breed has the most impact on traits including carcass yield, lean-to-fat ratio, intramuscular fat distribution or marbling, hardness of fat, and cooked meat's colour, tenderness, and juiciness. At lesser weights than others, certain breeds start to gain weight.
The percentage retail yield is most strongly influenced by the quantity of fat on a beef carcass. The percentage of muscle declines as the percentage of fat rises. At the 12th rib, perpendicular to the surface fat, a point three-fourths of the length of the rib eye (longissmus) muscle from the chine bone is used to quantify fat thickness.
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Helpppppppppp plzzzzzzz
Answers
Answer:
the digestive system
Explanation:
good luck with the rest of your quiz!
Which of the following is a passageway for air, food, and water?
a) Pharynx.
b) Larynx.
c) Paranasal sinuses.
d) Trachea.
e) Oesophagus.
Answers
a) Pharynx is a passageway for air, food, and water.
The pharynx is a passageway for air, food, and water in the respiratory and digestive systems. It is a muscular tube located behind the nasal cavity, mouth, and larynx. When you breathe, air passes through the pharynx on its way to the trachea and then into the lungs. When you swallow, food and water pass through the pharynx on their way to the esophagus for digestion. So, the pharynx serves as a common pathway for both air and food/water.
A hollow, muscular tube in the neck known as the pharynx begins behind the nose and empties into the larynx and oesophagus. The nasopharynx, oropharynx, and hypopharynx are the three components of the pharynx.
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4) A procedure
that is designed
and carried out
under
controlled
conditions to
prove or
disprove a
hypothesis.
OA)
experimert
OB.)
control
group
OC.)
observation
Answers
Experiment... Part of the Scientific method...
Hope it helps! Comment if you have any questions and have an amazing day!:p
Concerning the above image, what region of the eye contains rods/cones?
A) Sclera
B) Optic Nerve
C) Choroid
D) Retina
E) Other:
Answers
Answer:
Retina
Explanation:
The retina has rods and cones.
Rods help us see dim images and comes help us see bright and colored images.
4. Which of the following is true regarding genetic mutations?
a. All mutations are harmful.
b. All mutations are beneficial to the organism.
c. Mutations can be harmful, beneficial, or have no effect on the organism.
Answers
Answer:
C
Explanation:
mutations can be harmful, helpful, or neutral depending on the environment
For which of the following reasons do small isolated islands have a greater rate of species extinction than larger, less isolated islands?
Responses
Small isolated islands are more likely to receive more migrating species.
Small isolated islands provide opportunities for a greater diversity of species.
Because of their size, small isolated islands accumulate more species by chance.
Small isolated islands have a lower availability of resources.
Because they have fewer available niches, small isolated islands are targeted and colonized by species.
Answers
Answer:
Small isolated islands have a lower availability of resources.
Explanation:
Small isolated islands have a greater rate of species extinction than larger, less isolated islands because they have a lower availability of resources. Small islands often have limited resources such as food, water, and space, which can lead to competition between species for these resources. In addition, small populations on small islands are more vulnerable to random events like disease outbreaks or severe weather, which can lead to rapid declines in population sizes and a higher risk of extinction. Therefore, the limited availability of resources on small isolated islands can contribute to a higher rate of species extinction compared to larger, less isolated islands
How do you cope with the uncertainty
and upheaval in your own life and in the
world? What strategies and tools have
you used to maintain your sanity during
the coronavirus pandemic?
Answers
1. Can you determine whether or not an organism can ferment a sugar if it does not grow in the broth? explain. 2. How can an organism have a postivie test for acid from glucose in a fermentation tube but hav a negative methyl red test, which is also a glucose fermentation test? 3. When comparing a lactose fermentation tube with a MacConkey plate, a. what addition information does a fermintation tube give? b. What addition informatino does a MacConkey agar plate give?
Answers
On the off chance that the organic entity has not filled in that frame of mind, it is absolutely impossible to understand what its maturation capacities are. Numerous organic entities can fill in the base stock without the starch.
Glucose is the model food source: all fermentative microscopic organisms will utilize glucose. Sucrose and lactose are disaccharides and should be separated into monosaccharides. Not all microorganisms, and not all fermenters, can do this, so glucose fermenters could conceivably mature sucrose/lactose.
Glucose maturation will make acidic side-effects that will turn the phenol red pointer in the media yellow. In this manner, after the initial not many long stretches of hatching, the cylinder will be altogether yellow.
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features of euglena as a plant
Answers
Answer:
The Features of Euglena are:
1. Euglena has chloroplasts that allow it to photosynthesize.
2. Primitive eye-spot which detects light.
3. Euglena lacks a cell wall.
Explanation:
which of the following is an effect of soluble fiber trapping nutrients and delaying their transit through the gi tract? a. block absorption of unwanted constituents b. slow glucose absorption c. inhibit cholesterol synthesis in the liver
Answers
The effect of soluble fiber trapping nutrients and delaying their transit through the gi tract is slow glucose absorption. Option B is the correct answer.
Soluble fiber has the ability to trap nutrients and delay their transit through the gastrointestinal (GI) tract. This results in a slower rate of glucose absorption from the digestive system into the bloodstream. By slowing down the absorption of glucose, soluble fiber can help regulate blood sugar levels and prevent spikes in glucose concentration after a meal.
This can be particularly beneficial for individuals with diabetes or those aiming to manage their blood sugar levels. Soluble fiber can also contribute to improved glycemic control and increased insulin sensitivity.
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Soluble fiber trapping nutrients and delaying their transit through the GI tract slows the absorption of glucose, blocks absorption of unwanted substances, and inhibits cholesterol synthesis in the liver.
Explanation:The effect of soluble fiber trapping nutrients and delaying their transit through the GI tract is to slow glucose absorption. This is because when the enzymes that digest cellulose can't bind to the carbohydrate due to altered active sites, the undigested fiber adds bulk to the food, which subsequently slows its progress through the digestive system. As a result, the absorption of glucose into the bloodstream is slowed down.
Additionally, soluble fiber also helps inhibit cholesterol synthesis in the liver, as it interferes with the body's ability to absorb dietary cholesterol. In this way, it aids in the reduction of LDL cholesterol levels in the body.
Lastly, another effect of soluble fiber is to act as a natural block to absorption of unwanted constituents in the GI tract. When dietary lipids aid in the absorption of vitamins, such as A, D, E, K and water-soluble B and C, unwanted substances are also potentially absorbed. Thus, soluble fiber acts as a necessary barrier.
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PLEASE ANSWER!!! WILL GIVE BRAINLEST
Answers
Answer:
A: They all have a membrane
B: Cell Wall
C: The purpose of that structure is that the cell wall is for plants and it prevents the plants from moving. It's missing from the root hair cell because that is not a plant cell
Explanation:
Which of the following is a qualitative observation about grasshoppers that a science class could have made on their nature walk?
a.The grasshoppers will live longest in container filled with plants.
b.The grasshoppers are green with long back legs and antennae.
c.The grasshoppers will probably eat more grass than tree leaves.
d.The grasshoppers all hatched from eggs laid the year before.
Answers
Answer:
B
Explanation:
Qualitative means appearance wise, so B is correct because it is describing the appearance and observable features of the grasshoppers.
please yelp and explain, i will mark brainliest.
Answers
Answer:
Tectonic plates shift in some areas more than they do in other ones.
Explanation:
Hope this helps :)
P.S. can I have brainliest? lol
Answer:
I want to say its because of the tectonic plates that are under the Earth. The movement of the tectonic plates can cause the earthquakes to happen in faults and cracks in the Earth and commonly occur near the edge of these plates.
q1) Kidneys filter .... from blood
q2) For plants ...... is the reservoirs of water and minerals
PLEASE ANSWER BOTH QUESTIONS
Answers
i am unsure about the second one, but i will answer it in the comments if i find out. hope this helps! :)
Which organism is an example of an organism created with recombinant dna?
Answers
The organism which is an example of an organism created with recombinant DNA is corn with a gene from bacteria inserted into its genome. Option A.
Recombinant DNA molecules are described as DNA molecules produced using genetic recombination techniques used in laboratories to combine genetic material from various sources to produce sequences that wouldn't normally be present in the genome.
The gene is the centre of all genetics, and laboratory geneticists' primary objective is to identify, define, and modify genes.
It is a molecule derived from in vitro-created molecules or synthetic DNA that has undergone genetic modification to modify its characteristics.
In this sense, it is created by combining several DNA sequences from two distinct creatures, such as a DNA molecule from a bacteria that is modified in a lab and then transferred into another organism.
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Complete question:
Which organism is an example of an organism created with recombinant DNA?
A: corn with a gene from bacteria inserted into its genome
B: different dog breeds created by selecting for different traits
C: daisies with striped flowers created by pollinating two different daisy plants
D: potatoes cloned as exact copies of other potato plants
Would
you rather be employed by
nonrenewable energy? Why?
a company which gathers renewable energy or nonrenewable energy? Why?
Answers
Renewable energy companies are those that produce and distribute energy from renewable sources, such as solar, wind, hydro, and geothermal power.
Nonrenewable energy companies, on the other hand, produce and distribute energy from nonrenewable sources, such as fossil fuels.
There are several factors to consider when deciding which type of company to work for. Here are a few:
Environmental Impact: Renewable energy is generally considered to be better for the environment than nonrenewable energy. Renewable energy sources produce little to no greenhouse gases or other pollutants, whereas nonrenewable sources can have significant environmental impacts.
Job Security: Renewable energy is a growing industry, and job opportunities in this sector are expected to continue to increase. Nonrenewable energy jobs, on the other hand, may be more susceptible to changes in government regulations and market fluctuations.
Personal Values: Your personal values and beliefs may influence your decision. If you are passionate about protecting the environment and reducing carbon emissions, working for a renewable energy company may align more with your values.
Salary and Benefits: Salary and benefits can vary widely between companies, regardless of whether they produce renewable or nonrenewable energy.
Ultimately, the decision of which type of company to work for is a personal one that should take into account your individual priorities and values.
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what type of information do nociceptive neurons carry
Answers
The Nociceptive neurons carry information related to pain or potential tissue damage. These neurons are activated by noxious stimuli, such as extreme temperatures, pressure, or chemicals, and transmit signals to the central nervous system to elicit pain responses.
The nociceptive neurons are responsible for detecting and transmitting sensory information related to tissue injury or potential harm. Nociceptive neurons are specialized nerve cells that carry information related to pain sensations. They detect and transmit signals from potentially harmful or damaging stimuli to the central nervous system, allowing the body to respond appropriately to the situation. Nociceptors are sensory receptors that detect signals from damaged tissue or the threat of damage and indirectly also respond to chemicals released from the damaged tissue.
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What process allows your body to cool off on a hot day?
A. insulation
B. evaporation
C. convection
Answers
Answer:
B.
Explanation:
When you sweat cools your skin as it evaportates.
Please help Why must animals eat food but plants do not eat food?(1 point) Plants do not appear to eat, but they do actually eat nutrients in the soil. Animals must eat to obtain food that they can't get from the soil. Plants make their own food through photosynthesis, so they do not eat. Animals eat because the energy they make themselves is enough to live but not grow. By eating, they can grow big and strong. Plants use photosynthesis to make their own food instead of eating. Animals eat plants because they like the taste of certain fruits. Plants make their own food through photosynthesis. Animals must eat because they cannot make their own food.
Answers
Answer:
Because they will die if they don't eat food, they need the protein to keep them moving and there muscles strong. Some animals get food off of other animals.
Explanation:
Answer:
Explanation:
Well there is animals who only Eat plants and not other animals
Examples of large herbivores include cows, elk, and buffalo. These animals eat grass,
tree bark, aquatic vegetation, and shrubby growth. Herbivores can also be medium-sized
Hope this helps
Which labeled arrow represents the image formed by the lens?
Answers
Which of the following are characteristics of tropical coral reefs? Select all that apply.
Answers
The correct option is
They are near the equator.They are usually close to the surface of the ocean.What are coral reefs?Coral reefs are large underwater structures composed of the skeletons of colonial marine invertebrates called coral.
Coral reefs have some characteristics which include:
They are near the equator.They are usually close to the surface of the ocean.They display a symbiotic relationship with an algae called zooxanthellae.Corals reefs are found all over the world's oceans.
The biggest coral reefs are found in the clear, shallow waters of the tropics and subtropics.
Coral reefs are important as they protect coastlines from storms and erosion, providing jobs for local communities, and offer opportunities for recreation and tourism.
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Answer:
all of them
Explanation:
preganglionic sympathetic fibers release. a. acetylcholine (ach) b. norepinephrine (ne) c. both a and b d. none of the above
Answers
Preganglionic sympathetic fibers release acetylcholine (ACh) (option a). When the sympathetic division of the autonomic nervous system is activated.
Preganglionic fibers, originating from the intermediolateral column of the spinal cord, release ACh as their primary neurotransmitter at the synapses within the autonomic ganglia.
After the release of ACh, it binds to nicotinic acetylcholine receptors located on the postganglionic neurons within the autonomic ganglia. This binding initiates the transmission of the nerve impulse from the preganglionic to the postganglionic neuron.
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The medical term meaning 'surgical repair of the urethra' is:
Answers
The medical term for surgical repair of the urethra is urethroplasty.
Urethroplasty is a procedure performed to correct abnormalities or damage to the urethra, which is the tube that carries urine out of the body. It involves reconstructing the urethra using either tissue from other parts of the body or synthetic materials. Urethroplasty is usually recommended for patients who have experienced trauma to the urethra, have a stricture (narrowing of the urethra), or have congenital abnormalities that affect the urethra.
The surgery can be done in different ways depending on the location and severity of the damage or obstruction. Recovery time varies depending on the patient's individual case, but most patients can expect to be hospitalized for a few days following the procedure and may require a catheter for several weeks.
Overall, urethroplasty is a highly effective and safe surgical option for patients who require surgical repair of the urethra.
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the enhanceosome is part of the pre-initiation complex. true or false?
Answers
True, the enhanceosome is part of the pre-initiation complex. The enhanceosome is a multi-protein complex that binds to enhancer elements in the DNA, playing a role in regulating gene expression. It works together with other components of the pre-initiation complex to facilitate the binding of RNA polymerase II and initiate transcription.
The pre-initiation complex is a protein complex that forms at the beginning of transcription in eukaryotic cells. It includes the RNA polymerase and transcription factors, which are required for the initiation of transcription in eukaryotes. Different regulatory proteins bind to different promoters, which help direct gene expression. The enhanceosome is a multisubunit complex that binds to DNA sequences called enhancers, which are located far away from gene promoters and are essential for their optimal transcriptional activation.
Transcriptional factors that bind to the enhancer elements assemble to create the enhanceosome, a complex that works together to control the expression of genes, including the ones that regulate our immune system.
The statement "The enhanceosome is part of the pre-initiation complex" is true.
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What is the definition of COHESION?
Answers
Answer:
the action or fact of forming a united whole.
Explanation:
what is the most important role that nucleic acids play in living organisms on earth?
Answers
They contain a cell's genetic blueprint as well as instructions for the cell's operation.
What are nucleic acids?Nucleic acids are biopolymers, or macromolecules, that are necessary for all known forms of life. They are made up of monomers called nucleotides, which include a 5-carbon sugar, a phosphate group, and a nitrogenous base.
Deoxyribonucleic acid and ribonucleic acid are the two main types of nucleic acids.
Nucleic acids perform a wide range of operations, including cell formation, genetic information storage and processing, protein synthesis, and energy cell generation.
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A crop scientist observed that a beetle species that feeds on rice gradually became resistant to a pesticide.
Using natural selection as a model, which statement offers the BEST explanation of the scientist's observations?
The pesticide mutated the beetles exposed to the biggest doses.
The pesticide caused the beetles to reproduce more quickly than normal.
Those beetles with natural resistance to the pesticide had the most offspring.
Beetles learned to avoid the pesticide and passed the knowledge to their offspring.
Answers
Most progeny were produced by the pesticide-resistant beetles, which explains their progressive resistance to the chemical. Natural selection is to blame for this; characteristics that provide an advantage tend to survive and reproduce more. The right option is (3)Those beetles with natural resistance to the pesticide had the most offspring.
The BEST explanation for the agricultural scientist's finding that a species of beetle that feeds on rice eventually developed a natural resistance to a pesticide is that the beetles with the highest number of progeny also had the highest levels of natural resistance to the pesticide. This is due to the fact that through natural selection, individuals who possess qualities that provide them an advantage in a particular environment are more likely to survive and reproduce than those who do not, passing those traits on to their progeny. In this instance, the pesticide-resistant beetles had a higher chance of surviving, procreating, and passing on their resistance to subsequent generations.
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what is the chromosome number found in humans cells after meiosis i is completed?
Answers
The chromosome number found in human cells after meiosis I is completed is 23.
During meiosis, a specialized type of cell division that occurs in reproductive cells (gametes), the chromosome number is reduced by half. In humans, the diploid (2n) chromosome number in most cells is 46, meaning there are 23 pairs of chromosomes. These pairs consist of two sets of 22 autosomes (non-sex chromosomes) and one pair of sex chromosomes (XX in females and XY in males).
After meiosis I, which is the first division of meiosis, the homologous pairs of chromosomes separate. This results in the formation of two haploid (n) daughter cells, each containing half the number of chromosomes found in the parent cell. In human cells, each daughter cell produced after meiosis I will have 23 chromosomes, with one chromosome from each homologous pair.
It is important to note that meiosis II follows meiosis I, where the sister chromatids of each chromosome are separated. This results in the formation of four haploid daughter cells, each with 23 chromosomes. These daughter cells are the gametes (sperm or eggs) and carry only one set of chromosomes, which is essential for sexual reproduction and maintaining the correct chromosome number in offspring.
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