Answer:
Infectious diseases are transmitted from person-to-person through the transfer of a pathogen such as bacteria, viruses, fungi or parasites. A non-infectious disease cannot be transmitted through a pathogen and is caused by a variety of other circumstantial factors.
Explanation:
Which statement is true about gold and helium?
O A. They both occur as a gas at room temperature.
B. They are both made of subatomic particles.
c. They are both used in balloons.
D. One of made of protons and the other of only electrons.
Answer:
The answer is B
Explanation:
How does the structure of DNA explain chargaff's rule?
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine
Chargaff's Rule explains that in the natural DNA, the total number of guanine equals to the number of cytosine and the total number of adenine equals to the number of thymine. This tells about the base pair composition of DNA molecule.
What is Chargaff's rule?Chargaff's rule states that in the DNA molecule of any species or organism, the total amount of guanine residues should be equal to the amount of cytosine residues and the amount of adenine residues should be equal to the amount of thymine residues. A stoichiometric ratio of 1:1 of purine and pyrimidine bases i.e., A + G = T + C should be fulfilled.
Chargaff's rule describes the ratio of the various nitrogenous bases present in the DNA molecule. It aids in the determination of the structure and composition of DNA in living organisms. It is constant for a species.
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The science of genetics has demonstrated repeatedly:
1. that variation is the result of speciation
or
2. that variation among species is not the result of evolution
Answer:
Explanation:
1.Variation is the result of speciation as species have evolved over time to adapt to enviromental changes
What is the most common molecule in living things?
OA. CO,
O B. CO
OC. Hy
OD. Hz0
Helppp
Answer:
Explanation:
Ao
Your answer is C: H2O
Living things composed of many molecules. Which are water , fats , carbohydrates , proteins. Gases include oxygen , carbon dioxide , carbon monoxide , hydrogen etc. Body also contains ions such as sodium , phosphate , potassium etc.
Water is body's main component. The amount of Water in human body is around 55- 60 percent. The percent of water in infants is high around 75-85 percent.
Sodium chloride can most likely be used successfully to melt ice in which
Canadian city?
A. Regina
B. Winnipeg
C. Toronto
D. Fort McMurray
List the 4 types of stress and their initiators.
Answer:
Time stress, Anticipatory stress, Situational stress, and Encounter stress
The signs of stress are as follows: dizziness, aches or pains, grinding teeth or clenched jaw, headaches, indigestion, increase in or loss of appetite, muscle tension in neck, face or shoulders, problems sleeping
Hope this helps :D Have a great day
What do sharks, bony fish, primates, and birds have in common?
Answer:
they all move when theyre alive
Explanation:
greatest mass to least mass: moons, galaxy,
planets, stars, nebulae.
In the process of respiration, organisms generally
a. use oxygen and give off carbon dioxide
b. use nitrogen and give off carbon dioxide
c. use carbon dioxide and give off oxygen
d. use carbon dioxide and give off nitrogen
Answer:
A
Explanation:
During respiration organisms use up oxygen given off by plants and give off carbon dioxide as by product
Salinization lowers crop yields.
True or false ?
............................Please help ASAP ........................
Answer:
I think answer choice D
Explanation:
The passage summarized says that ostriches and rheas look exactly the same but are different sizes, therefore answer choice D is auto eliminated
Which is not a likely economic tool to address environmental issues?
Emissions fees and taxes
Responsibility for a product from production to disposal
Small business liability relief
Defunding government regulation
Explanation:
Policy-makers have two broad types of instruments available for changing consumption and production habits in society. They can use traditional regulatory approaches (sometimes referred to as command-and-control approaches) that set specific standards across polluters, or they can use economic incentive or market-based policies that rely on market forces to correct for producer and consumer behavior. Incentives are extensively discussed in several EPA reports
Two basic types of traditional regulatory approaches exist. The first, a technology or design standard, mandates specific control technologies or production processes that polluters must use to meet an emissions standard. The second, a performance-based standard, also requires that polluters meet an emissions standard, but allows the polluters to choose any available method to meet that standard. Performance-based standards that are technology-based, for example, do not specify a particular technology, but rather consider what available and affordable technologies can achieve when establishing a limit on emissions. At times, EPA may completely ban or phase out the use or production of a particular product or pollutant, as it has done with chlorofluorocarbons (CFCs) and certain pesticides. Regulations can be uniform or can vary according to size of the polluting entity, production processes, or similar factors. Regulations are often tailored in this manner so that similar regulated entities are treated equally. MARK AS BRAINLIEST IF IT HELPS
Crossing-over occurs
a. during prophase 2.
c. during prophase I.
b. during fertilization.
d. at the centromere
Which pair of waves could overlap to produce a wave with a higher amplitude through interference?
Answer:
D: Two waves of the same amplitude with crests that are perfectly aligned
Explanation:
A P E X
all you need is in the photo
Because biological systems are generally held at constant temperature and pressure, it is possible to predict the direction of a chemical reaction by measuring which of the following?
a. ATP concentration
b. Enthalpy
c. Entropy
d. Free energy
Because biological systems are typically maintained at constant temperature and pressure, calculating the free energy of a chemical reaction allows one to predict the reaction's direction that is in option d.
What role does free energy play in the biological system?In a biological system, the free energy is very significant, where the free energy is the amount of energy that is needed by the cells of the body to perform the function, and the negative free energy indicates that the reaction is exothermic and this energy can be used for other processes. The process where free energy is needed, known as endothermic process, must be completed when there is positive free energy.
Hence, because biological systems are typically maintained at constant temperature and pressure, calculating the free energy of a chemical reaction allows one to predict the reaction's direction that is in option d.
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why is water not food and
what does the food label on water show that water does.
Which two factors are most likely to cause a plant's guard cells to open its stomata?
A. Increased gravitational pull I
B. Increased sunlight
C. Increased rainfall
D. Increased turgor pressure
the correct answers are B and D
the increased sunlight will determine the guard cells to start photosynthesis, this will result in an incresed glucose concentration inside the guard cells .The increased glucose concentration will cause osmotic pressure to build up, so the guard cell will absorb water from neighbouring cells, this will cause increased turgor pressure that will deform the cells in order for the stomata to open
Answer:
D. Increased turgor pressure
B. Increased sunlight
Explanation:
Which statement accurately describes runners?
A runner is a small underground stem that sprouts new buds.
A runner is a series of underground leaves that contain stored food.
A runner is a horizontal stem that grows along the ground.
A runner is a horizontal stem that grows underground.
Answer:
C✌
A runner is a small underground stem that sprouts new buds.
A runner is a series of underground leaves that contain stored food.
A runner is a horizontal stem that grows along the ground.<--THIS ONE
A runner is a horizontal stem that grows underground.
Which of the following polypeptides is coded for by the mRNA sequence AUGGUUAAACGACAAUCC ? a Val, Lys, Phe, Gly, Ser b Met, Asp, Phe, Ala, Arg c Met, Val, Lys, Arg, Gln, Ser d Ile, Gln, Lys, Asp, Gly, Leu, Ser
Answer:
i think the answer is C
Explanation:
AUG = met
GUU= val
AAA= lys
CGA= arg
(ect.)
The polypeptide that is encoded by this specific mRNA sequence is likely Met-Val-Lys-Arg-Gln-Ser (option C).
What is translation?The translation is a cellular process by which a specific mRNA chain is used to create a polypeptide chain.
The linear order of nucleotides in the mRNA chain specifies the amino acids that will be added to the polypeptide.In conclusion, the polypeptide that is encoded by this mRNA sequence is Met-Val-Lys-Arg-Gln-Ser (option C).
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How can the health of a forest play a role in maintaining human health?
A. Forest can be a source of mining.
B. Forest provide pulp to make paper.
C. Medicines are made from forest species.
D. Forest provide numerous wildlife habitats.
Answer:
c. medicines are made from forest species
Explanation:
hope this helps
PLS help Explain one way the water cycle affects weather. Use complete sentences. (3 points)
Answer:
The cycling of water in and out of the atmosphere is a significant aspect of the weather patterns on Earth.
Explanation:
Meaning that the water cycle basically controls the weather. The water cycle controls if you'll have a sunny day, or a rainy day.
(Im not the best at explaining things so this might not be the full thing theyre looking for)
please answer asap! anatomy final exam!! thanks:)
Describe what lymph is and how it travels throughout the body. What would happen if the lymphatic system did not drain interstitial fluid from the body?
Answer:
A fluid that flows through the lymphatic system is called lymph. it travels when you breathe and move your muscles the lymph continuously get pushed towards the heart from the outer reaches of your body. if the lymphatic system didn't drain interstitial fluid then the lymph fluid would build up in the body's tissues, making them swell.
Question 4 (1 point)
Why is meiosis important for sexual reproduction?
a
OOO
b
Meiosis reduces genetic variation
Meiosis increases the chance of desirable mutations
Meiosis reduces the number of chromosomes
Meiosis increases the number of body cells
Ос
Od
Answer:
3rd answer:
Explanation:
What is the function of Primase?
Answer:
Explanation:
"Primase is an enzyme that synthesizes RNA sequences called primers. primase produces RNA molecules, the enzyme is a type of RNA polymerase."
Hope this helps :)
How are fly eyes and mouse eyes different? Similar?
Answer:
Fly eyes and mouse eyes look very different and have different structures. However, both types of eyes have the same function. They sense light and make vision possible. ... If the Pax6 gene coded for parts of the actual eye, then the fly would develop mouse eyes in addition to normal fly eyes when the gene was inserted.
Explanation:
Bcz Instead they loke same but if you see the flying eyes and see the mouse eyes the flying eyes conrain fax si that they look different..
Ope it helps
List 3 organisms that are made of plant cells:
Answer:
Seed Plants
Ferns
Mosses
Thallophytes
Explanation:
- Use what you have learned about dominant and recessive alleles to explain why Ravyn
is albino when neither of her parents is abino?
Answer:
Please find the explanation as to why Ravyn is albino when neither of her parents is abino below
Explanation:
According to Gregor Mendel in his law of dominance, a DOMINANT allele is a form of a gene (allele) that masks the phenotypic expression of another in a gene while the RECESSIVE allele is the allele being masked. This means that an allele can be present in a gene but in a masked or recessive condition.
According to this question, Ravyn happened to be an albino when neither of her parents is albino because BOTH of his PARENTS are HETEROZYGOUS for the skin color trait i.e. they both contain the allele for normal skin color, which is dominant, and the allele for albinism, which is recessive. Note that a recessive trait will only express itself when in a pure breed condition, hence, both parents contributed the reccesive allele (albinism) to produce the recessive condition in Ravyn.
In a nutshell, Ravyn is an albino because his parents are heterozygous and both passed on the recessive alleles to him.
In mice brown fur (B) is dominant to white fur (b). Two brown mice mate. Their genotype in unknown. You observe the offspring and notice 5 are brown and 2 are white. Given this information, you determine both parent genotypes must be:
a. BB
b. Bb
c. bb
d. a reliable conclusion can't be reached
Answer:
bb bc there more alike
but i am not so sure
what is the next number of the sequence?
0.99, 9.9, 99, 990, ____
I believe the next number is 9900
Reason: To get the next number in the sequence, move the decimal point
0.99 —> 9.9
9.9 —> 99.
99. —> 990.
990. —> 9900.
Sorry if wrong