2. Which statement about nuclear fission is false?
Nuclear fission is used to generate electricity at nuclear power plants.
Nuclear fission takes place in the core of stars.
Nuclear fission releases large amount of energy.
The fuel for nuclear fission is often uranium.
Answer:
"Nuclear fission takes place in the core of stars."
this statement is false
What is the smallest family in the phylum Aves?
one who gets it right get brianlyness! (if i can find the button..)
Answer:
birds
Explanation:
All the websites I've found confirm this.
:)
what is the correct sequence of steps in cellular respiration, starting with glucose?
A recent diet trend has made snack cakes far less popular than they once were. As such, demand for snack cakes is expected to
fall. As demand falls, (1 point)
o producers make lower profits, and some will exit the market
O consumers face lower prices, and are encouraged to consume more
O consumers face higher prices, and are encouraged to consume less
O producers make higher profits, and more will enter the market
Producers make lower profits, and some will exit the market. The correct option is A.
Thus, Reduced demand for snack cakes will probably result in decreased profitability for producers, and some may even decide to leave the market.
This decline in demand could affect the profitability of snack cake producers by resulting in lower sales and revenues.
In addition, prices may drop as a result of the decline in demand to entice customers to purchase more of the falling snack cakes.
Thus, Producers make lower profits, and some will exit the market. The correct option is A.
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does an object need to able to perform all characteristics of life? Why or why not?
mammalian cells that are membrane-bound, circular, biconcave discs that have no nuclei at maturity are called __.
Blood cells are membrane-bound, circular, biconcave discs that have no nuclei at maturity.
What are blood cells?Blood cells are round, disc shaped cells, that constitute the blood.
There are three types of blood cells:
White blood cells (monocytes, lymphocytes, neutrophils, eosinophils, basophils, and macrophages) Red blood cells (erythrocytes)Platelets.The red blood cells help to carry oxygen to the body.
White blood cells help in immunity of the body.
The platelets involve in the process of hemostasis.
Thus, the correct option is blood cells.
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the eukaryotic cell organelle that most resembles a bacterial cell is the
Answer:
mitochondria
Explanation:
Both bacteria and mitochondria have their own cell
5. The human immune system is a complex network of cells and organs that evolved
to fight off infectious pathogens. Vaccines teach the immune system by mimicking
a natural infection. The influenza vaccine, contains a weakened form of the virus
that doesn't cause severe disease or reproduce very well. Human white blood cells
(WBC's ) can't tell that the vaccine viruses are weakened, so they kill the viruses.
Antibody levels start to decline over time and the influenza virus evolves very
rapidly. Why does and individual need to get a yearly flu vaccine?
Answer:
the flu virus mutates to different form so updating the vaccine is helpful
Explanation:
Tại sao sau khi bón phân đạm cho cây ko nên ăn sau khi bón?
Answer:
PHÂN ĐẠM VÀ NHỮNG CÂU HỎI LIÊN HỆ THỰC TẾ !
- Tại sao không bón phân đạm cho đất chua?
* Giải thích: Đất chua là đất có độ pH<7 (do dư thừa ion H+), đất chua gây ra nhiều bất lợi cho việc giữ gìn và cung cấp thức ăn cho cây, đồng thời làm cho đất ngày càng suy kiệt cả về lý tính, hóa tính và sinh học . Khi bón phân đạm có chứa ion NH4+ ion này sẽ sinh thêm ion H+ theo phương trình NH4+ «NH3 + H+ ,làm tăng độ chua của đất.
- Tại sao không bón vôi và đạm amoni (NH4NO3, NH4Cl)
Comments
Explanation:
diffusion and osmosis are examples of __ transport.
Jessica is doing an investigation to see how many birds come to the tree in her backyard each morning. She repeats her investigation every morning for four days. Her data is shown below.
Number of Birds Observed
Day of the Week Number of Birds
Monday 7 birds
Tuesday 5 birds
Wednesday 6 birds
Thursday 2 birds
Average = 5 birds each day
How would the result of her investigation have been different if she had only counted the birds on Thursday?
Answer:
thrusday
Explanation:
i would invenstigation on the day thrusday
menciona las 10 razones por las cuales la educación en salud es necesaria
Answer: sie
Explanation:
what is the highest level of organization that ecologists study
a person with an xo genotype is classified as having
Which of the following is true breeding plants if they are allowed to self pollinate a b or c
Answer:
C
Explanation:
helppppp answer the question at the bottom
Yes, you should expect differences because animals use their body temperature to keep them either cool or warm from the environments they live in. You wouldn't expect a big change from an insect like a bee because the environment Isn't that warm or cold.
In the 21st century, the international community tried to punish North Korea
because:
A. it refused to join the United Nations.
B. it treated racial minorities poorly.
C. it committed human rights violations.
o
O
D. it invaded several neighboring countries.
Answer:
d it invaded several neighboring countries
Explanation:
where does the krebs cycle take place in the mitochondria?
Answer:
In eukaryotes, the Krebs cycle reactions take place in the mitochondrial matrix, a dense solution that surrounds the mitochondria crests: in addition to water, the matrix contains all the enzymes necessary for the biochemical reactions of the cycle, coenzymes, and phosphates.
Explanation:
which of these describes the structure of a nucleic acid
c. A hydrophilic head containing a glycerol and two hydrophobic tails
Why do lysosomes keep their digestive
enzymes in membranous sacs?
A. because the membranous sacs can sense when the cell is about
to be attacked
B. because the membranous sacs keep the digestive enzymes
from destroying the cell
C. because the membranous sacs act as tails that help the
lysosomes move faster
D. because the membranous sacs act as factories helping the
digestive enzymes make proteins
The correct answer is option B. because the membranous sacs keep the digestive enzymes from destroying the cell.
What is the purpose of the membrane surrounding the lysosome?The membrane surrounding the lysosome is vital to ensure these enzymes do not leak out into the cytoplasm and damage the cell from within. In order to maintain the acidic pH of the lysosome, protons are actively transported into the organelle across the lysosomal membrane.
What part of the cell is a membranous sac?
A vesicle is a small, membrane-bound sac that transports substances in cells. The ER moves proteins and other substances within eukaryotic cells. Vesicles that contain newly made proteins move through the cytoplasm from the ER to an organelle called the Golgi apparatus.
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Put the components of the visual projection pathway in order starting with the retina and ending with the brain. Instructions Choice 1 of 6. Optic radiations toggle button Optic radiations Choice 2 of 6. Optic tracts toggle button Optic tracts Choice 3 of 6. Bipolar and ganglion cells of the retina toggle button Bipolar and ganglion cells of the retina Choice 4 of 6. Hemidecussation in optic chiasm toggle button Hemidecussation in optic chiasm Choice 5 of 6. Lateral geniculate nucleus of thalamus toggle button Lateral geniculate nucleus of thalamus Choice 6 of 6. Primary visual cortex in the occipital lobe toggle button Primary visual cortex in the occipital lobe
Put the components of the visual projection pathway in order starting with the retina and ending with the brain. In order, starting from the lowest to the highest, we have:
Bipolar and ganglion cells of the retina Hemidecussation in optic chiasmOptic tracts Lateral geniculate nucleus (LGN) of the thalamusOptics RadiationPrimary visual cortex in the occipital lobeThe visual projection pathway is referred to as the channel through which electrical impulses created by the retina are transmitted to the brain.
When light penetrates the eye into the retina;
The bipolar and ganglion cells carry the signals from photoreceptors (cones and rods) to ganglion cells, either actively or passively.The axons of the ganglion gather and unite to form the optic nerve.The optic nerve leads to the optical chiasm where hemidecussation of the optic nerve fiber takes place.In the Optic Chiasm, the optic tract contains the nasal fibers that join from the left eye and connect with temporal fibers from the right eye, vice versa.The lateral geniculate nucleus (LGN) which connects from the optic tracts has nerve endings that send optical radiation information from the superior visual fields to the inferior visual fields.The primary visual cortex region is largely located on the occipital lobe of the medial brain surface, its function is to receive and process the optical radiation information sent from the (LGN).
Therefore, we can conclude that we understood the order, mechanism, and process in the visual projection pathway.
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What is the importance of reproduction in plants?
Answer:
Reproduction is important in plants to produce their progeny and to maintain its population. Plant reproduction helps to maintain its birth rate and sustain the ecosystem. Reproduction helps to acquire new variations and adapt to the environment with the most desirable characters.
Explanation:
Natural laws are:
a. a process of discovering the answers to questions.
b. a preliminary explanation.
c.rules that explain how all things in the entire universe always behave.
d. a form of inquiry.
Answer:
bxhxnxvjxxvhxjxjxbxbxhx xhxbxbxjx
How are organisms classified into subgroups?
one reason that identical twins might show slight differences at birth is
Answer:
genetic variation and traits
Cell theory states that all living things contain one or more cells. Why do you think cell theory meets the definition of
a scientific theory? Do you think it should be a scientific law? Explain your response.
Explanation:
OK, first of all, let me explain to you, what is a scientific theory...
A scientific theory is an explanation and demonstration of an aspect that exists in the natural world or universe that has been verified by the scientific way through repeated testing of the experiment with accepted protocols of observation, measurements and evaluation of results.
A scientific law is generated in the same procedure as above, but it can predict a wide range of natural phenomena.
Ex-: you are throwing a basketball from the top of a dam to the river. according to physics on earth, it should fall down. it's a law. no matter where you are, that basketball touches down the ground if there's any gravitational force.
But cell theory cannot be assumed to be common throughout the entire universe. Because we may find some other form of life that has some other plans. viruses are not obeying this theory.
*In a nutshell, a law is stable from its' origin. most of the time, it won't change. but theories will change with updating facts of science.
the principle of ________ is the concept that ancient life forms evolved in a definite order and therefore their fossils can help determine the geologic ages of strata.
Answer:
Principle of fossil succession is the concept mentioned above.
Explanation:
i used g o o g l e but that's all i could find so if its right please give Brain l i e s t
what is the function of the mouth in the digestive system
- If a 0.9 % salt solution is isotonic to an animal cell, then a hypertonic solution would be?
Answer:
If 0.9% NaCl were isotonic to a cell then anything greater than 0.9% would be hypertonic. A hypertonic solution is one which has a greater concentration of dissolved solutes while an isotonic one has a similar concentration of solutes.
Explanation:
If a 0.9 % salt solution is isotonic to an animal cell, then a hypertonic solution would be 1.0%. Thus, the correct option for this question is D.
What is a Hypertonic solution?A hypertonic solution may be defined as a type of solution that significantly has lower osmotic pressure than another solution to which it is compared. If the surrounding solution has a higher solute concentration compared to inside the cell, it represents a hypertonic solution.
According to the context of this question, if a 0.9 % salt solution is isotonic to an animal cell, then anything greater than 0.9% would be hypertonic. So, all the options except for 1.0% are lesser than or equal to 0.9%.
Therefore, if a 0.9 % salt solution is isotonic to an animal cell, then a hypertonic solution would be 1.0%. Thus, the correct option for this question is D.
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In mammals the digestive tract is made up of multiple
such as the stomach, pancreas and intestines. These all work together to form the
we use to digest food.
Answer:
The digestive system is made up of the alimentary canal (also called the digestive tract) and other organs, such as the liver and pancreas. The alimentary canal is the long tube of organs — including the esophagus, stomach, and intestines — that runs from the mouth to the anus.
In mammals, the digestive tract is made up of multiple organs such as the stomach, pancreas, and intestines. These all work together to form the alimentary canal we use to digest food.
The digestive system in mammals is a complex network of organs and structures responsible for breaking down food into nutrients that can be absorbed and utilized by the body. The digestive tract, also known as the alimentary canal or gastrointestinal tract, consists of several organs that collaborate to facilitate the digestion and absorption process.
Stomach: The stomach is a muscular organ that receives and churns food, mixing it with gastric juices containing enzymes and acids to begin the process of digestion. It plays a crucial role in breaking down proteins.
Pancreas: The pancreas is both an endocrine and exocrine gland. Its exocrine functions involve producing digestive enzymes that are released into the small intestine to further break down carbohydrates, proteins, and fats.
Mouth: The mouth is where food is chewed and mixed with saliva. Saliva contains enzymes that start to break down carbohydrates.
Esophagus: The esophagus is a muscular tube that carries food from the mouth to the stomach.
Small intestine: The small intestine is the longest part of the digestive tract. It is where most of the nutrients from food are absorbed.
Large intestine: The large intestine is shorter than the small intestine. It absorbs water and salts from food and stores waste products until they are eliminated from the body.
Rectum: The rectum is the last part of the digestive tract. It stores waste products until they are eliminated from the body.
The digestive tract is a vital organ system that is essential for the survival of mammals. It allows mammals to obtain the nutrients they need from food to stay alive and healthy.
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