what is an atomic nucleus
Answer:
Explanation:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
Atomic nuclei consist of electrically positive protons and electrically neutral neutrons. These are held together by the strongest known fundamental force, called the strong force. The nucleus makes up much less than . 01% of the volume of the atom, but typically contains more than 99.9% of the mass of the atom.
Dust from mining is commonly associated with
A. heart disease
B. lung disease
C. liver disease
D. kidney disease
Answer:
B. Lung Disease
Explanation:
From breathing in the coal dust all their lives.
Why does an egg's cell membrane change after a sperm have entered it?
to slow down implantation
to initiate cell division in the egg
to prevent other sperm from entering
to ensure that the sperm does not leave
(THIS IS A LIFE SCIENCE QUESTION!)
What are some behavioural adaptations of tigers that hunt?
eg, how the tigers hunt.
Answer:
Tigers are nocturnal hunters because they are able to see and hunt at night. They also have extremely sensitive hearing capabilities which makes it nearly impossible for prey to escape. A behavioral adaptation of the tiger is moving into areas of dense vegetation because that is where most of the animals they eat live.
Explanation:
give me a brilliant
What is inside the cells of a plant that performs
photosynthesis?
Answer:
inside the cells are chloroplasts which contain a green pigment called chlorophyll. The chlorophyll absorbs sunlight from the surroundings
Answer:
Chloroplasts are our star of the show! These plant organelle are one of the key things to photosynthesis, as chloroplasts produce chlorophyll which helps the plant absorb energy during photosynthesis.
which of the following cellular structure is possessed by all cells?
a. nucleus
b. cell membrane
c. chloroplast
d. mitochondria
Answer:
A
Explanation:
the nucleus is needed for all living creatures cells it contains the dna info to create basically the whole plants being.
All cells that can either prokaryotic or eukaryotic possess a cell membrane. The correct option is b.
What is cell membrane?The cell membrane is a biological membrane that segregates the inside of all cells from their surroundings and helps to protect the cell.
It is present in all organisms including a prokaryotic and eukaryotic cell.
Thus, the correct option is b.
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Why are earthworms described as hermaphrodites?
What features do
cardiac muscle cells
have when looking
under a microscope?
Answer:
stripes, branched together
Explanation:
i used to study different cells!
Describe the difference between topoisomerase I and topoisomerase II
Answer:
Topoisomerase I refers to the enzymes which cut one of the two strands of double-stranded DNA, relax the strand, and reanneal the strand while topoisomerase II refers to the enzymes which cut both strands of the DNA helix simultaneously in order to manage DNA tangles and supercoils.
The difference between topoisomerase I and topoisomerase II:
Definition. Topoisomerase I refers to the enzymes which cut one of the two strands of double-stranded DNA, relax the strand, and reanneal the strand while topoisomerase II refers to the enzymes which cut both strands of the DNA helix simultaneously in order to manage DNA tangles and supercoils.
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explain how the age of the oceanic crust provided evidence for seafloor spreading
Answer:
The principle of seafloor spreading states that new ocean crust is always being formed, and that this crust is slowly carried farfar from its factor of starting place over a duration of time. The examine of the repeated reversal of the Earth's magnetic poles through the years has supplied convincing proof of seafloor spreading.
Hope this helped! I would appreciate a Brainliest if you wouldnt mind, and have a good day!
What happens to the outer layer of the Red Giant as it expands?
A : It will drift off into space and become a Planetary Nebula.
B: It will explode and become a Planetary Nebula.
Answer: it’s A
Explanation:
PLEASE HELP!!!!!! 100 points
Which phase of cell division is shown?
telophase
anaphase
metaphase
prophase
Answer:
it is anaphase
Explanation:
Chromosome break at centromeres, and sister
chromatids move to opposite ends of the cell
A hypothetical light bulb is provided 450 kilojoules of electricity; however, 90 kilojoules of electric energy was wasted producing heat, while the rest of the energy was actually used to produce light. What is the % efficiency of this light bulb?
*
45%
80%
0.2%
20%
None of the above
Hummingbirds need large amounts of energy to flap their wings between 60
and 200 times per second. Their wings beat so rapidly that it is difficult to see
them move. They often appear suspended in air for extended periods of time
without changing their location. Hummingbirds have long bills and grooved
tongues to reach into flowers to feed on flower nectar.
Which two body systems are involved based on the information above?
Select one:
•
skeletal and muscular
•
skeletal and endocrine
•
skeletal and digestive
skeletal and circulatory
Which is a correct interpretation of the cladogram shown below? Amoeba Sponge Earthworm Trout Lizard Koala Dog Platenia Jaws Segmented Body Unicellule Common Ancestor
A. Amoebas and trout are in the same genus.
B. Koalas evolved after dogs.
C. Koalas use placental birth,
D. Lizards evolved after earthworms
Answer:
its d
Explanation:
just took the quiz
Answer:d
Explanation:
Enternal Supplememts Explore similarities
The expression 'enternal supplements' refers to the diet additives used in this feeding methodology, which is based on gastrointestinal digestion.
What is Enternal digestion?Enternal nutrition is a type of digestion that provides nutrients (either micronutrients or macronutrients) and calories by directly using the gastrointestinal tract.
Enternal digestion is associated with the use of diet supplements that help to obtain the required nutrients.
In conclusion, enternal supplements are diet additives used in this feeding methodology, which is based on gastrointestinal digestion.
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In seals, the gene for the length of the whiskers has two alleles. The dominant allele (A) codes long whiskers and the recessive allele (a) codes for short whiskers. if one parent seal is pure long-whiskerd and the other is short-whiskered.what percent of offspring would have short whiskers?
Answer:
None or Null
Explanation:
Long whiskers is AA(dominant)
short whiskers is aa(recessive)
parental generation:
AA aa
cross = Aa, Aa Aa Aa
First fillial generation = Aa, Aa, Aa, Aa
:.No offspring will have short whiskers as Long whiskers allele are dominant
Which of the following statements about ace inhibitors is true?
The statement that is true about the ACE inhibitors is that they are alpha blockers.
What are ACE inhibitors?The term ACE inhibitors refers to a group of drugs that are used as antihypertensive drugs and assist in the relaxation of the blood vessels.
The statement that is true about the ACE inhibitors is that they are alpha blockers.
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Missing parts:
Which of the following statements about ACE inhibitors is true? A. They're alpha blockers. B. They increase fluid volume. C. They add amyloid. D. They decrease fluid volume.
Which characteristic best distinguishes quantitative data from qualitative data?
its validity
its repeatability
its ability to be graphed
its ability to be recorded
what are the four factors that affect genetic change in livestock production.
The ___ of the brain controls our muscle coordination and balance.
Answer:
the cerebellum is at the back of the brain it controls the muscle
which of the following is a benefit associated with the use of energy producing technologies excluding the burning of fossil fuels
a. reduce water use
b. reduce air pollution
c.reduce habitat loss
d. all of the above
Why are antibiotics unhelpful for treating the common cold?
A. Colds are caused by bacteria.
B. Colds are caused by antibiotics.
C. Antibiotics cannot treat disease.
D. Antibiotics attack only bacteria.
Answer:
D. Antibiotics attack only bacteria.
Explanation:
The common cold is caused by virus, so it can not be cured by antibiotics.
Because, antibiotics only attacks bacteria. So, option (d) is the answer.
Answer: the answer to ur question would be answer choice D
Explanation:
Which body systems help the respiratory system move gases between the lungs and the cells of the body?
Answer:
The Cardiovascular System
Explanation:
The respiratory system draws air into the lungs. Oxygen diffuses through the walls of the alveoli and across the walls of the capillaries where it enteres the bloodstream. The oxygen molecules are picked up by red blood cells, which are pumped through the blood vessels by the action of the heart. As the red blood cells carrying oxygen pass through capillaries near the cells, oxygen diffuses into the cells.
Answer:
The respiratory system collaborates with the circulatory system to deliver oxygen and remove metabolic waste. It also aids in blood pH regulation. Respiration is the process through which oxygen and carbon dioxide are exchanged between the atmosphere and the body's cells.
Huntington's disease is an inherited disease that causes the progressive degeneration of nerve cells in the brain, resulting in significant physical, mental, and behavioral decline. There is no treatment or cure. A patient whose father has Huntington's disease is considering genetic testing to determine if she also will develop the disease. Which of the following would NOT be a benefit of the genetic testing? (2 points)
the following would NOT be a benefit of the genetic testing is "Knowing whether she carries the gene for Huntington's disease will help her select appropriate insurance coverage to meet her medical needs." Option C. This is further explained below.
What is Huntington's disease?Generally, Huntington's disease is simply defined as an autosomal dominant disorder, this disease may be triggered by a single errant copy of the faulty gene.
In conclusion, The Huntington's disease has to do with the genotype of a person\.
CQ
1.Huntington's disease is an inherited disease that causes the progressive degeneration of nerve cells in the brain, resulting in significant physical, mental, and behavioral decline. There is no treatment or cure. A patient whose father has Huntington's disease is considering genetic testing to determine if she also will develop the disease. Which of the following would NOT be a benefit of the genetic testing?
Knowing whether she carries the gene for Huntington's disease will allow her to plan financially for the years she may require assisted care.
Knowing whether she carries the gene for Huntington's disease will assist her in making reproductive choices, such as the odds of passing the gene to a child.
Knowing whether she carries the gene for Huntington's disease will help her select appropriate insurance coverage to meet her medical needs.
Knowing whether she carries the gene for Huntington's disease will prevent misdiagnosis or improper treatment of symptoms of the disease as they arise.
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Which of the following are controversies over water usage in the United States? Select the three correct answers. (2 points)
whether people should build dams on rivers
whether people should drink bottled or tap water
whether there are hidden costs to tap water
whether water treatment should be privatized
whether dams increase the salt level of water
These are points over water usage in the US are whether people should build dams on rivers ,whether people should drink bottled or tap water, whether water treatment should be privatized.
What Contaminated water and loss in US?Contaminated water and a loss of simple sanitation are undermining efforts to give up excessive poverty and disorder withinside the world's poorest countries. In 2017, 2 billion humans global did now no longer have get entry to to simple sanitation centers consisting of bathrooms.
As the U.S. water deliver decreases, call for is about to increase. On average, every American makes use of eighty to a hundred gallons of water each day, with the nation's predicted overall day by day utilization topping 345 billion gallons—sufficient to sink the country of Rhode Island below a foot of water.
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Answer:
whether people should build dams on rivers
whether people should drink bottled or tap water
whether water treatment should be privatized
Explanation:
I just did the quick check and i got it correct :)
2 Explain the major aspects of metaphysican Study?
Answer:
explain inherent or universal elements of reality which are not easily discovered or experienced in our everyday life.
Explanation:
Metaphysics is the study of the fundamental nature of reality.
The major aspects of metaphysical study:
Ontology: This branch of metaphysics studies the nature of reality. It asks questions about what exists, what the ultimate constituents of reality are, and what the relationships between these constituents are.Epistemology: This branch of metaphysics studies the nature of knowledge. It asks questions about what knowledge is, how we acquire knowledge, and the limits of knowledge.Cosmology: This branch of metaphysics studies the nature of the universe. It asks questions about the origin, structure, and ultimate fate of the universe.Philosophy of mind: This branch of metaphysics studies the nature of mind. It asks questions about the relationship between mind and body, the nature of consciousness, and the possibility of free will.Value theory: This branch of metaphysics studies the nature of value. It asks questions about the nature of good and evil, the nature of right and wrong, and the foundations of morality.These are just some of the major aspects of metaphysical study. Metaphysics is a vast and complex field, and there are many other topics that could be included.
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What is the largest bone in the human body?
The largest bone in the human body is the femur bone. The femur bone is located in the thigh. The function of this bone is to connect hip and knee joints. Not only the femur bone is the largest, the femur bone also is the longest bone in the human body.
Explanation:
The femur bone is a crucial part of the ability to stand and move for humans. It’s holding the weight of your body therefore the femur bone is also the strongest bone in the human body. The second largest bone in the human body is the tibia which is located in the leg, tibia connects the knee joint and ankle joint.
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Why do you think it's important to study past climate to predict future
climate?
does venus take a longer or shorter time than earth to make one orbit around the sun
Answer:
Venus rotates very slowly on its axis – one day on Venus lasts 243 Earth days. The planet orbits the Sun faster than Earth, however, so one year on Venus takes only about 225 Earth days, making a Venusian day longer than its year
