Answer:
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
What kind of mutation does not negatively or positively impact the host organism?
Answer:
neutral mutations
Explanation: i did this in class
Match the columns and chose the correct option. Column A Column B 1.The male reproductive part of a flower i) sepal 2. The female reproductive part of a flower ii) stamen 3. The part of the flower which protects it in bud stage iii) ovules 4. Part of a flower which develops into a seed iv) carpel
Explanation:
1.Stamen
2.carpel
3.sepal
4.ovules
what do you think about the human and his structure how it's made all the human structure
Answer:
its a thousand of generation evolution i think as of darwins law of evolution
Answer:
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DOES EXERCISE HELP PREVENT A HEART ATTACK?
can somebody please help me answer this question rn like i need it and it’s environmental science btw
Yes
According to the National Institutes of Health a half hour of moderate aerobic exercise daily can decrease risk of heart attack by up to 50%.
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1. What is the name of the process, where the cells absorb oxygen and nutrients, while getting rid of carbon dioxide and other waste products?
2. What is needed in the body for energy that is formed in the cells?
3. Why are not all cells in the body the same?
4. What is in the cell nuclei of cells?
5. What is the role of genes?
6. Plant cells have strong cell walls. Why do animals with only a thin cell membrane survive around the cells?
7. Fill in the missing words.
a) ------ is the body's smallest building blocks.
b) Cells that are similar to each other together forms one ------
c) An organ consists of several different ----- ones and together with other organs forms one -------
Circle the word or phrase that best completes the sentence.
1. Fermentation is a chemical reaction that occurs in the (cytoplasm /
mitochondria/matrix / membrane). Because it is (aerobic / anaerobic),
fermentation (requires / does not require) oxygen. Compared to cellular
respiration, lactic acid fermentation generates (much less / much more!
about the same amount of) ATP and is less efficient.
Answer:
aerobic
Explanation:
Answer:
Cytoplasm, Aerobic, Does not require, much less
Explanation:
Because it is right
The melting of wax is a physical change , yet the burning of wax is a chemical change . What is the essential difference between the physical change and chemical change of wax in a burning candle
Answer:
A physical change does not change the identity of an element but a chemical change does.
Explanation:
Can someone answer this thanks
Answer:
Plan evacuation routes to higher ground.
Answer:
The answer is 3
Explanation:
What type of wave moves the audio and visual signals?
Answer:
electromagnetic waves to be honest but Transducer Waves
Explanation:
Answer:
A carrier wave.
Explanation:
I just took the Televisions Quiz and got it right. :)
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Answer:
A thick, dense fur, keeps the fox warm during winter, by preventing excessive loss of temperature and body heat when it is cold.
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what conclusion can you make regarding how humans affect biodiversity? use evidence from the graph to support your answer
Answer:
humans have a large affect on biodiversity.
this is due to human activities that interact with biodiversity such as deforestation and over fishing
To produce starch, glucose molecules bond together through
A. Cellular respiration
B. dehydration synthesis.
C. photosynthesis
D. nucleotides
Answer:
photosynthesis
Explanation:
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Glucose molecules bond together through DEHYDRATION SYNTHESIS to produce starch.
WHAT IS DEHYDRATION SYNTHESIS?
Dehydration synthesis is the process whereby larger molecules are formed from the coming together of smaller molecules accompanied by the release of water.HOW STARCH IS FORMED FROM GLUCOSE?
Glucose is a monosaccharide i.e. contains one sugar unit while starch is a polysaccharide i.e. contains many sugar units. Glucose molecules come together to form an α-1,4 glycosidic linkage. This joining process that eventually forms starch results in the loss of water molecule, hence, it is called DEHYDRATION SYNTHESIS.Glucose molecules (C6H12O6) bond together through DEHYDRATION SYNTHESIS to produce starch.
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Give an example of active transport. Explain what occurs during this process, including the type of substances that is being transported, the concentration gradient, and any structures in the cell membrane or within the cell that are used.
Explain how mutations can alter a DNA strand and ultimately a protein structure. Make sure to include point mutation, frameshift mutations, insertion, deletion, substitution, and silent mutations.
Answer:
By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition
Explanation:
A simple diagram of a DNA molecule is shown below. Which of the following is represented by X?
(photo above)
Answer:
From the diagram X = base pairs
Explanation:
Genetic information stored within DNA is used for growth, reproduction, and cell repair. DNA, deoxyribonucleic acids, are long-chain, helical macromolecules made of specific sequences of covalently bonded monomers called nucleotides.
Nucleotides comprise:
a 5-Carbon deoxyribose sugar, one nitrogenous base (adenine, guanine thymine, and cytosine) and a phosphate group.Nitrogenous bases cause nucleotides to form hydrogen bonds with other nucleotides as base-pairs. The four types of bases each make the nucleotides Thymine and Cytosine (pyrimidine bases) along with Guanine, and Adenine, (purine bases). In base-pair formation, Adenine forms double bonds with Thymine, and cytosine forms triple bonds with guanine.
If a father has type A blood and the mother has Type AB blood, they would NOT have a child with which of the following blood types?
AB
A
B
O
Answer:
If a father has type A blood and the mother has type AB blood, they cannot have a child with blood type O, although depending on the father's genotype, they may not have children with a B blood type either.
Explanation:
Blood type is determined by the presence or absence of surface antigens A and B, which is genetically determined and establishes the pattern of inheritance.
Alleles that define the presence of antigens A and B are co-dominant, while the absence of antigens - as in blood type O - is a recessive trait.
Type A contains antigen A and its genotype can be A|A or A|O. Type B contains the B antigen, whose genotype can be B|B or B|O. Blood type AB contains both antigens and a single genotypic expression A|B Type O blood lacks surface antigens, with genotype O|O.The father with blood type A can have two genotypes, A|A or A|O, which raises 2 possible scenarios:
1. Father A|O with mother A|B
Alleles A O
A A|A A|O
B A|B B|O
In this case there is no chance of having a child with blood type O, 50% chance of having children with blood type A, 25% B and 25% AB.
2. Father A|A with mother A|B
Alleles A A
A A|A A|A
B A|B A|B
50% chance of having a child with blood type A and 50% with blood type AB. In this case there is no chance of having children with blood type O or B.
The typical growth period of a cell occurs during which stage of the cell cycle?
Answer:
Interphase
Explanation:
interphase is composed of G1 phase (cell growth)
Human activities can have an impact on natural disasters. t or f
Answer:
True
Explanation:
Take Hurricanes for example, As global warming keeps getting worse, We are going to keep having more and more since the ocean will stay warmer longer which is showing right as this moment. Earthquakes, Humans can interfere with this say they are mining near tectonic plates and they have an explosion occur, This can cause a major or minor earthquake to occur as the plates shift among one another which can cause violent shaking and maybe even huge faults to occur in the earth's surface
Scientists have successfully inserted the human gene for insulin into bacteria.
The resulting bacteria are able to produce human insulin as shown above. Which of
the following best explains why this is possible?
Answer:Human plasmid can mutate
Explanation:
Adding or removing heat from a system may result in a temperature change. Ben found a penny outside on the hot sidewalk. He brought it inside and added it to a cup of room temperature water. What will happen to the penny’s temperature once he puts it in the cup of water?
A. the heat will transfer from the water to the penny
B. the heat will transfer from the penny to the water
C. the penny will not change temperature
D. the penny will change state
Answer:
I'm pretty sure the answer is B
Explanation:
What role does intraspecies competition play in natural selection?
A. There is competition within a species for resources, and only some individuals will survive.
B. There is competition within a species for resources, and only the single most fit individual will survive. ( ITS NOT B)
C. There is competition between species for resources, and only one species will survive.
D. There is competition between species for resources, and only one individual per species will survive. ( I don't think it's this one...)
Why is it a good idea to set goals for a reading?
Answer:
To be able to remember more of the book you are reading.
Explanation:
Which of the following is not a reason for cell devision?
A. DNA cannot be copied quickly enough in large cells
B.The cell gets too big to process and transport nutrients
C. Surface area to volume ratio becomes to large
D.New cells are needed for growth
Answer:
C
Explanation:
thats not true
All of the following are examples of environmental influences on maturation except
A. heredity
B. physical activity
C. caregiver responsiveness
D. nutrition
The only factor that is not an environmental factor listed is heredity.
What are environmental influences ?
There are two kinds of factors that could affect an individual and these are;
Hereditary factorsEnvironmental factors.Environmental factors are those factors that are products of your surrounding. They do not depend on inheritance. The only factor that is not an environmental factor listed is heredity.
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Answer:
A. heredity
Explanation:
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Which two types of clouds usually do not produce rain or snow?
A. Altostratus
B. Cumulonimbus
C. Cirrus
D. Cumulus
Answer:
It is b or option 2, Cumulonimbus
Answer:
The answer is C and D
Explanation:
They do not produce ANY rain or snow they are the peaceful clouds sometimes little drips but most of the time basically all the time it is clear sky!
an organism that obtains energy by feeding on other organisms
Answer:
Heterotrophs/ or consumers
Explanation:
Heterotrophs, or consumers, are organisms that must obtain energy by consuming other organisms (autotrophs or other heterotrophs) as food.
In plants, yellow pea color (Y) is dominant over green pea color (y). Two heterozygous plants (Yy) are crossed. Which of the following results supports Mendel’s Laws
1.All of the yellow offspring are heterozygous for color.
2.all of the offspring have genotype Yy.
3.All of the offspring are yellow.
4. The offspring could be yellow or green.
Answer: .All of the yellow offspring are heterozygous for color.
Explanation: do your chart
The offsprings could be yellow or green since the genotypes obtained after cross will be YY, Yy and yy Therefore, option (4) is correct.
What are Mendel' law?The following is an outline of Mendel's laws of inheritance:
The principle of dominance is the foundation of the laws of inheritance. The law specifies that hybrid offspring will only inherit the dominant phenotype. The alleles that do not show in an individual are referred to as recessive traits, whereas the alleles that do manifest are referred to as dominant traits.
The alleles for each gene separate from one another during the process of gamete creation, ensuring that each gamete carries just a single copy of each allele for the genes that it contains. This is known as the law of segregation.
The law of independent assortment states that genes for various characteristics might segregate in an unrelated fashion while gametes are being formed.
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What is the main function of the circulatory system in multicellular organisms?
Answer:
Multicellular organisms have developed transport and circulatory systems to deliver oxygen and food to cells and remove carbon dioxide and metabolic wastes.
Explanation:
Answer:
To transport materials throughout the body
Explanation:
what is the effect of molecule size on a molecule's ability to diffuse across a membrane?
Answer:
The correct answer is 'If molecules are small enough, then they can pass through the semipermeable membrane because they can cross the semipermeable membrane from their small pores or openings'.
This chemical equation represents a chemical reaction.
2HNO3 + Na2SO3 - 2NaNO3 + H2O + S02
Which chemical is a reactant in the reaction?
O A. Na so
B. SO2
O C. H20
OD. NaNO3
Answer:
OPTION A is the reactant
Explanation:
This is an acid-base reaction (neutralization): HNO3 is an acid, Na2SO3 is a base.
Answer:
A.
Explanation:
reactants are on the left side of the arrow