Answer:
3
Explanation:
Two chemicals were placed in a container and a chemical reaction occured. The container became hot at the end of the reaction.
what kind of chemical reaction had happened ?
Answer:exothermic
Explanation:
the reaction gave off heat which means energy was leaving we leave through exits so it was exothermic
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How do environmental factors and heredity affect personal health?
Thanks
Answer:
Heredity: all the traits and properties that are passed along biologically from both parents to child. To some degree this determines your general level of health. You inherit physical traits such as the color of your hair and eyes, shape of your nose and ears, as well as your body type and size.
Explanation:
Brainliest please?
Answer:
A clean-living environment can help decrease the risk of developing illness and disease affecting personal health. Heredity are traits and properties that are passed along biologically from both parents to a child. These traits can be good or bad like diseases and linesses.
Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?
The ways to observe that a chemical change has occurred when two substances come in contact with one another are as follows:
Color Change.Production of an odor.Change of Temperature.Evolution of a gas (formation of bubbles)Precipitate (formation of a solid)What is a chemical change?A chemical change is a any process in which reactants are changed into products by the breaking or creation of chemical bonds.
A chemical change is opposed to a physical change in the sense that a physical change affects only the form of a chemical substance, but not its chemical composition.
The ways to observe if a chemical change has occured are as follows:
Color Change.Production of an odor.Change of temperature.Evolution of a gas (formation of bubbles)Precipitate (formation of a solid)Learn more about chemical changes at: https://brainly.com/question/23693316
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Answer:
(Question) Which of the following is an example of only a physical change?
(Answer) dry ice becoming vapor
(Question) Which of the following demonstrates a chemical change?
(Answer) iron (Fe) reacting to water((H2O)) and oxygen(O) to form iron oxide(Fe2O3)
(Question) Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?
(Answer) conduct a test to determine the chemical makeup of the molecules
(Question) Which of the following happens during a chemical change but does not happen during a physical change?
(Answer) Atoms of one or more substances rearrange into a new substance.
(Question) Which of the following example demonstrates the reversibility of a chemical change?
(Answer) recharging batteries
Explanation:
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Why is retinoblastoma more common in individuals who have inherited the RB deletion and have the genetic predisposition for retinoblastoma?
Answer:
Retinoblastoma is more common in people due to the mutation of RB gene in them.
Explanation:
Retinoblastoma is a disease that affects the eyes of an individual. It is more commonly eye cancer which occurs on the retina of the eye. Retinoblastoma mainly affects younger children.
When the RB gene is mutated or it is deleted already on any one of a homologous chromosomes, then only one hit rather that two which is needed to cause the development of retinoblastoma and hence the probability is of retinoblastoma to occur is higher in the individuals who have already inherited the RB deletion and also have a genetic predisposition for the retinoblastoma.
Which of the following is NOT an example of homeostasis?
a
During rigorous exercise the heart rate increases to deliver more blood to the cells.
b
As humans age, they become more susceptible to disease and cancer.
c
When blood glucose is high, the hormone insulin reduces blood glucose.
d
When body temperature rises, nerve impulses cause sweat glands to release more sweat.
Answer:
d
Explanation:
When body temperature rises, nerve impulses cause sweat glands to release more sweat
Earth Science: Q14. Explain the principles of the plate tectonics theory.
Answer: Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle. The key principle of plate tectonics is that the lithosphere exists as separate and distinct tectonic plates, which float on the fluid-like (visco-elastic solid) asthenosphere. The relative fluidity of the asthenosphere allows the tectonic plates to undergo motion in different directions.
Explanation:
How do naturally occurring hormones affect plants?
Answer:
The answer is C :)
Explanation:
explain why it is important to keep the levels of nucleotides relatively balanced in the context of dna and rna synthesis
Answer:
Read Below
Explanation:
Nucleotides are A & T and G&C you see in DNA and in RNA T is Replaced by U. The reason they must be balanced between G&C and T&A is because G has to bond with A in DNA and G with C so if there is more G than C that means there is mismatches between the DNA nucleotides same thing for A and T. In RNA you follow the same rule. If we have lets say 27% of our DNA as A we have to have 27% as T leaving 23% as C and 23% as G. If there was lets say 29% T while one 27% A then there was a error in DNA replication and could lead to errors in RNA synthesis if not corrected
1. What is the relationship between the virus structure and its function in the virus model?
2. How do mutations affect the ability of a virus to infect a cell?
Answer:
PLZ MARK ME AS BRAINLIST....
Explanation:
ANSWER OF 1ST QUESTION -
1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic .
ANSWER OF 2ND QUESTION -
Mutations can produce viruses with a reduced pathogenicity, altered host range, or altered target cell specificity but with intact antigenicity. Such viruses can sometimes be used as vaccine strains.
dont answer if you ont know it
The more bonds an atom can make, the more likely it is to combine with other atoms in different ways.
Which element is most likely able to make the greatest variety of bonds?
nitrogen
hydrogen
oxygen
carbon
Answer:
hydrogen
Explanation:
this is because hydrogen has a valency of 1 and has only one electron in it's outer most energy level thus able to bond with many elements easily
Explain how water cycles globally
Explanation:
Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).
What spheres of the Earth will be affected by the volcanic eruption and how does it affects? Make 3 sentences.
What is included in growth rate factors
Answer:
Population growth is based on four fundamental factors: birth rate, death rate, immigration, and emigration.
Explanation:
GG.
And you choose this answer?
please help me
is the my daughter
Answer: I think it’s D,C, and A.
Explanation:
Water can enter the skin cells of a dead body placed in water, due to passive transport.
True
False
The statement indicating that water can enter the skin cells of a dead body placed in water, due to passive transport is TRUE.
What is passive transport?Passive transport refers to the movement of substances in favor of a concentration gradient through a membrane, and osmosis is a type of passive transport by which water (H2O) molecules move through a membrane in favor of this gradient.
In conclusion, the statement indicating that water can enter the skin cells of a dead body placed in water, due to passive transport is TRUE.
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9.) What is an emergent property?
Answer:
here
Explanation:
properties that become apparent and result from various interacting components within a system but are properties that do not belong to the individual components themselves.
science is based on facts not options.
-an ______ is a statement that expresses feelings or beliefs.
-facts on the other hand ,are statements that can be proved true. supported with _____
fill in the blanks.
Answer:1 is opinion
2is evidence.
Explanation:
Answer:
the first one is "opinion"
the second one is "facts"
Choose the right answers
Answer:
1st, 2nd and Last option
Explanation:
The number of protons is equal to its atomic number. Neutral atom means that the charge in the atom is 0. In order to make the charge 0, the proton and electron charges have to be additive inverses, meaning the sum of the proton and electron charges have to be 0. Each proton has a +1 charge while each electron has a -1 charge. Hence, the number of protons and electrons have to be equal.
What do buffers do and why are they important in biological systems
Explanation:
A buffer is a solution that can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively stable. This is important for processes and/or reactions which require specific and stable pH ranges. Buffer solutions have a working pH range and capacity which dictate how much acid/base can be neutralized before pH changes, and the amount by which it will change.
Students set out five bird feeders, each of a different color:
red, blue, green, yellow, or brown.
Assuming that birds have no color preference, what is the theoretical
probability that a visiting bird will go to the blue feeder?
A. 1.0
B. 0.2
C. 0.4
D. 0.5
Assuming that birds have no color preference, the Probability that a visiting bird will go to the blue feeder is 0.2 (20%)
B. 0.2How is probability calculated?The probability is calculated using a simple division. Just divide the number of events by the number of possible outcomes, as seen in the formula
p = n(e)/n( Ω ).With this information, we can conclude that To determine the probability that z is between two given values, determine the cumulative areas for each value, then subtract the smaller from the larger. To determine the probability that z is less than a given value, find the corresponding accumulated area.
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Which statements accurately describe animals? Check all that apply.
-All animals are prokaryotes.
-All animals are multicellular.
-All animal have cells that contain a nucleus and organelles.
-All animals are capable of asexual reproduction
-All animals must maintain stable internal conditions.
-All animals stay in one place throughout their lifetime.
-All animals make their own food.
All animals are multicellular.
All animal have cells that contain a nucleus and organelles. These two are the correct statements.
Animals have a huge variety of characteristics that set them apart from species in other kingdoms, despite the fact that they all belong to the animal kingdom. The vast majority of animals have specialized tissues, and all animals are eukaryotic, multicellular organisms. The majority of animals are mobile, at least at some points in their lives. Animals need nourishment in order to thrive and grow. Every animal is heterotrophic, meaning they consume both live and dead organic stuff. They differ from autotrophic creatures like most plants, which produce their own nutrition through photosynthesis, and from fungi, which externally digest their food, in that they receive energy in this manner. Animals can be parasitic, herbivorous, carnivorous, or omnivorous.Most animals reproduce sexually, and unlike plants, the young go through a sequence of developmental stages that shape their body plans.Therefore, all animals are multicellular and have cell organelles.
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How would you know when homeostasis has been reached in your egg and syrup system?
The egg and syrup system
because the egg membrane is semi-permeable, water can flow in however proteins can not flow out. If a egg is positioned in the corn syrup the egg will shrink. this is also because of osmosis, but inside the opposite direction. The corn syrup is more often than not sugar.
What takes place whilst you go away an egg in water for twenty-four hours?
depart the egg within the water for 24 hours. The water will migrate from the side of the membrane wherein water molecules are abundant (outside the egg) o the side where water molecules are less considerable. After 24 hours, the egg will be plump once more.
What takes place whilst you positioned an egg in vinegar then corn syrup?
as the vinegar reacts with the eggshell, bubbles surround the egg, inflicting it to waft. while the egg is placed in the salt water, it sinks to the lowest of the beaker again, considering the fact that it's miles greater dense than the salt water solution. The egg floats inside the corn syrup due to the fact the corn syrup is extra dense than the egg.
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Will mark brainliest also will give 50 points
What is the half set of chromosomes in gametes?
A. Zygote
B. Fertilization
C. Diploid
D. Haploid
Answer:
Diploid
Explanation:
Gametes contain half the chromosomes contained in normal diploid cells of the body, which are also known as somatic cells. Haploid gametes are produced during meiosis, which is a type of cell division that reduces the number of chromosomes in a parent diploid cell by half!
Answer:
diploid
Explanation:
I think, it's been a few years since I took biology but I hope it's right
Write a paper that outline the adaptations of carnivorous plants ( see pp.91-92 of evolutionary analysis). Use Gibson and waller 2009) to summarize specifically how “ snap-trap” may have evolved from “flypaper” trap by natural selection .adderess the pertinent principles of natural selection found in chapter 3 of envolutionary Analysis .A link to this paper is found on the blackboard site for this couse
Answer:
1 adaptation of carnivorous plant is this
Trapping Their Prey
Common trapping techniques are pitfall traps, flypaper traps, snapping traps, and suction traps. The first two use adaptations that involve shape and sticky surfaces. The last two are particularly fascinating, because the presence of prey triggers the plant to take action — to move, quickly!
If a DNA molecule is 10% Adenine (A), what percent of the DNA molecule
is made up of Cytosine (C)? (Hint: remember the base pairing rules)
related set of
If a DNA molecule is 10% Adenine (A), 40% of the DNA molecule
is made up of Cytosine (C)
The DNA composition ratio can be calculated by Chargaff's rule which states that, Guanine and cytosine should both be present in equal amounts in the DNA of every species and organism, while adenine and thymine should both be present in equal amounts. Additionally, there should be a 1:1 stoichiometric ratio between the purine and pyrimidine bases (A+G=T+C).
As per the Question,
If, A=10 then T=10 because A always pair with T. If T=10, then G=40, and then C=40. The total sum is equal to 100 or A + G (10 + 40) = T + C (10 + 40). Which ratio is equal to 1:1.
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Researchers collected data about the heart rates of
humans aged 5 to 90 years. They represented the data in a
graph.
Which statement is the best explanation of the pattern in the data?
A. The data show that increasing age causes an increase in heart
rate
8. The data show neither correlation nor cause between age and heart rate
C. The data show a correlation between age and l
D. The data show cause but not correlation between age and heart
rate
The statement 'the data show a correlation between age and heart rate' is the best explanation of the pattern in the data (Option C).
What are causation and correlation?Causation means that a given outcome (i.e, the independent variable, in this case age) may lead to a modification the dependent variable (in this case the hearth rate), whereas correlation indicated a relationship between variables.
In conclusion, the statement 'the data show a correlation between age and heart rate' is the best explanation of the pattern in the data (Option C).
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Which of the answers is correct about atoms?
Answer:
A. at the center of the atoms are the electrons
Explanation:
An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.
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Describe digestion in the small intestine and large intestine
What are villi and microvilli? What are their funcrions
Answer:
Villi and microvilli are both membranous structures that help facilitate the exchange of materials out and in the cell.
Explanation:
Since they are threadlike projections it increases the surface area while decreasing the volume (that's really good for any cell!). So they both indeed make the exchange of fluids and other materials easier.
2. Mammary glands are shared characteristic among mammals and the oldest common ancestor of mammals. This is an example of a
O A. cladogram.
O B. synapomorphy.
O c. taxonomy.
O D. phylogeny.
Answer: B
Explanation: