Answer: B
Explanation:
How does Earth's revolution around the sun and the tilt of its axis affect the seasons?
A) by changing earths position in orbit
B) by changing the distance earth is from the sun
C) by changing the intensity of sunlight all the different parts of earth
D) by changing atmospheric temperatures on earth at the equator
The season change is caused by the tilt of the Earth's axis which leads to different parts of Earth receiving the Sun's most direct rays. The season is affected because of changing the intensity of sunlight in all the different parts of the Earth.
What is the axis of Earth?The axis is the imaginary line on which a planet rotates around. Earth's rotational axis is an line that is imaginary and runs straight through the North and South Pole.
Earth's revolution around the sun and the tilt of its axis affect the seasons by changing the intensity of sunlight all the different parts of Earth.
Thus, the correct option is C.
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A gene variation that is masked in the presence of dominant alleles.
Answer:
Some genes mask the expression of other genes just as a fully dominant allele masks the expression of its recessive counterpart. A gene that masks the phenotypic effect of another gene is called an epistatic gene; the gene it subordinates is the hypostatic gene.
Explanation:
Consider an experiment in which nucleic acids are separated using agarose gel electrophoresis. In the gel you load the following samples: Lane 1: a population of linearized 3000-bp double-stranded DNA (dsDNA) molecules. Lane 2: a population of circular 3000-bp double-stranded DNA (dsDNA) molecules. Lane 2: a population of circular 3000-bp double-stranded DNA (dsDNA) molecules Which population of nucleic acids would most likely migrate through the gel fastest, and in which direction through the gel will these molecules migrate?
a. The linearized dsDNA would most likely migrate faster than the circular dsDNA. All DNA molecules would migrate toward the positive end of the gel.
b. The circular dsDNA would most likely migrate faster than the linearized dsDNA. All DNA molecules would migrate toward the positive end of the gel.
c. The circular dsDNA would most likely migrate faster than the linearized dsDNA. All DNA molecules would migrate toward the negative end of the gel.
d. The linearized dsDNA would most likely migrate faster than the circular dsDNA. All DNA molecules would migrate towards the negative end of the gel.
Answer:
a. The linearized dsDNA would most likely migrate faster than the circular dsDNA. All DNA molecules would migrate toward the positive end of the gel.
Explanation:
Electrophoresis gel is a technique widely used in molecular biology in order to separate macromolecules (e.g., DNA, RNA, proteins) according to their size and charge. The DNA is a molecule negatively charged, thereby the DNA fragments will always move toward the positive electrode in an electrophoresis gel. In the DNA molecule, the charge-to-mass ratio remains constant, thereby DNA fragments will separate based on their size (i.e., small DNA fragments will move through the gel faster than large ones). Moreover, for the same size, linear dsDNA fragments experience less frictional resistance against the gel than circular dsDNA fragments and, therefore, linearized dsDNAs run faster.
Describe at least two costs and two benefits of wind farms. !!!! ASAP plzz
In bird dogs, barking while trailing (B) is dominant to silent while trailing (b). A heterozygous
barking trailer is bred to a silent female trailer. Various offspring resulted.
Complete question:
In bird dogs, barking while trailing (B) is dominant to silent while trailing (b). A heterozygous barking trailer is bred to a silent female trailer. Various offspring resulted.
What is the genotype of the male animal?What is the genotype of the female animal?How many different genotypes are possible among the offspring?What proportion of the offspring will be heterozygous barkers?Answer and Explanation:
Due to technical problems, you will find the complete question, answer, and explanation in the attached files.
An electric motor converts electrical energy into which kind of energy?
Potential
Kinetic
Stored
Chemical
Answer:
Kinetic Energy
Explanation:
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Two gametes, each carrying a mutant recessive allele for a different gene/enzyme in the adenine biosynthetic pathway, come together to form a diploid embryo. The individual derived from this embryo will display a:______.
a. lethal phenotype in media lacking adenine supplementation.
b. wild-type phenotype, capable of synthesizing adenine.
c. a weak adenine requirement for survival (intermediate phenotype).
d. a profound defect in adenine synthesis as two enzymes are missing.
e embryonic lethality.
f. co-dominant recessive mutant, incapable of synthesizing adenine synthetic lethal interaction.
Answer:
vvvvvvvvvvvvvvv
Explanation:
which of the following statements correctly describes the role of white blood cells in the human immune system?
A. Neutrophils gather at sites of infection and release histamine, while macro phages ingest antigens before they enter the blood stream
B. Monocytes gather at sites of infection and release histamine, while basophils ingest antigens before they enter the bloodstream
C. Neutrophils gather at sites of infection and release histamine, while monocytes ingest antigens before they enter the bloodstream
D. Basophils gather at sites of infection and release histamine, While macrophages ingest antigens before they enter the bloodstream
Answer:
Explanation:
A
are
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What types of organisms
being modified through genetic engineering?
A. all organisms
B. bacteria only
C. plants only
Answer:
A. All organisms
Explanation:
How does coral bleaching impact humans?
Answer:
Coral bleaching and associated mortality not only have negative impacts on coral communities, but they also impact fish communities and the human communities that depend on coral reefs and associated fisheries for livelihoods and wellbeing.
brown eye color is dominate; blue is recessive.if a brown-eyed man marries a blue-eyed woman and they have a brown eyed boy and a blue eyed girl, what can we conclude about the parents?
Answer: first baby - dads dominant brown colored eyes
second baby - both of moms genes becuase you need two recessive genes to have a recessive trait
Explanation: i hope that makes sense, have a great day!!
2. Which fiber type would one expect to find in ligaments?
Answer:
Collagen fibers
Explanation:
What are the potential hazards relating to materials handling injuries?
Which interaction involves only one of Earth's spheres?
Answer:
Energy stored in plants is transferred to humans and animals that eat them. Biosphere is a sphere on earth where living organism forms a biotic community.
Explanation:
What are the characteristics of kingdom eubacteria?
Prokaryotic
Heterotrophic
Unicellular
Multicellular
Found in extreme Environments
Eukaryotic
Found in common environments
Autotrophic
unicellular
Explanation:
eubacteria is not mutiple in number
Which statement best describes how some trees respond to decreasing temperatures and shorter days in the fall? A. They drop their leaves and go into dormancy. B. They drop their leaves and increase photosynthesis. C. They grow new leaves and increase photosynthesis. D. They grow new leaves and go into dormancy.
what is a similar term phrase for gene mutation?
Answer:
Synonyms. genetic mutation reversion change alteration deletion mutagenesis chromosomal mutation saltation inversion modification transposition gene mutation point mutation.Explanation:
How do lungs help cells in the body meet their needs?
A. They produce oxygen for the body.
B. They bring oxygen from air into the body.
O c. They transform oxygen from the body into carbon dioxide.
D. They release oxygen fromod and send it through the body.
Prevention of Foodborne Illness
Food purchased from the grocery store may contain pathogens that cause foodborne illness. To reduce the risk of illness, follow proper procedures for food preparation and storage.
Drag the appropriate items into their respective bins.
1- Divide large pots of soup into smaller batches before cooling.
2- Use a food thermometer to make sure meat has reached an appropriate internal temperature.
3- Thoroughly wash cutting boards used for cutting raw meat before slicing fresh vegetables on them.
4- Do not use color as an indicator of how well-cooked meat is.
5- Wash hands correctly before and after handling food.
6- Refrigerate leftover food within 2 hours.
7- Thaw meat on the bottom shelf of the refrigerator.
8- Wash fresh fruits and vegetables before preparing and/or eating.
Clean Combat Cross-Contamination Cook Chill
Answer:
1- Chill
2- Cook
3- Combat Cross-Contamination
4- Cook
5- Clean
6- Chill
7- Combat Cross-Contamination
8- Clean
Explanation:
A foodborne illness (also known as food poisoning) is an illness caused by eating contaminated foods by harmful microorganisms such as bacteria (e.g., Escherichia coli), viruses, parasites, and/or toxins (e.g., mycotoxins) contained in foods. Some of the most common symptoms of food poisoning include vomiting, nausea and diarrhea. Foodborne illnesses are generally caused by improper practices in the home kitchen, i.e., improper handling, preparation and food storage. Cross-contamination refers to the transfer of harmful microorganisms/toxins from one substance to another. The most common contributing factors to cross-contamination include equipment-to-food contamination, food-to-food contamination, and people-to-food contamination. The most important habit to prevent cross-contamination is washing hands and foods before eating and cooking. Moreover, cooking foods to proper temperatures can destroy microorganisms/toxins that cause foodborne illnesses. Finally, chilling (at 8˚C or below) and freezing (at -18° C) foods can also protect from food-borne illnesses as many harmful microorganisms cannot grow at these temperatures.
State two (2) characteristics of enzyme.
Answer:
It has catalytic activity.
It is a protein
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The two characteristics of enzymes are :
They act like biological catalysts and speeds up the rate of reaction.Enzymes remain unchanged at the end of reaction and need helper molecules called cofactors to perform required actions ._____________________________
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Which of the following is an impact on either individuals or populations from pollution of oil?
(a) Chilchen exposed to oil in fetal development have shown a loss of IQ.
(b) Oil floating on the surface of water can coat the feathers of birds and marine animals.
(c) Long-term exposure to oil can cause cancer, lung disease, kidney disease, and convulsions.
(d) Oil affects only the individual organism that consumes it with minimal effect on the food chain.
The IQ of chickens exposed to oil during prenatal development has decreased. This is a consequence of oil pollution on people.
What effects do humans experience from oil?Humans exposed to oil and gas from spills have suffered permanent injury, according to biomarker studies. Adverse effects can be divided into liver damage, reproductive harm, immune system deterioration, elevated cancer risk, and increased levels of certain toxics (hydrocarbons and heavy metals).
What effects does oil pollution have on the environment?Long-lasting impacts can be expected. Oil can change buoyancy and natural waterproofing, harm surface-dwelling animals and birds, and suffocate them.
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Answer:
(b) Oil floating on the surface of water can coat the feathers of birds and marine animals.
Explanation:
It was on the test and I got it correct.
what is the difference between matrix and shoma?
Answer: Similarly, in computer science, an array is a rectangular arrangement of numbers, a more general case; and a matrix is an array with a special mathematical meaning. In computer science, an array is a general way of arranging data.
Explanation:
Question 16 Multiple Choice Worth 2 points)
(06.04 MC)
A surgeon extracts developing sperm cells from a male. In what order will he cut through the tissues of the male to access the developing sperm?
Testis; vas deferens; scrotum
O Testis; scrotum; vas deferens
O Scrotum; testis, seminiferous tubule
O Scrotum, seminiferous tubule; testis
Question 17(Multiple Choice Worth 2 points)
(06.04 MC)
what are the different ways fungal spores can be dispersed?
Answer:
Explanation:
The spores of some fungi are dispersed in water or on the surface of water. The chemical composition of the wall of these spores makes them "non-wettable" so they won't sink. The spores are carried along on the surface of the water like little boats. Water in the form of raindrops can disperse spores in a different way. While gravity is not a primary means of spore dispersal, evolutionary adaptations have been required of many fungi to overcome gravitational effects for effective spore dispersal. SPORE DISPERSAL BY WIND Dispersal of fungal spores by wind is by far the most common method for terrestrial fungi.
Which would be considered an ecosystem?
A
a colony of bacteria
B
biotic factors in a forest
с
populations of zebras and lions
D
living and nonliving things in a pond
Answer:
A colony of ants is a species, C is only animals and only the biotic factors it is D living and nonliving things in a pond
Explanation:
Assume that Brown (B) hair is dominant over blond (b) hair and that oval shaped eyes (O) were dominate over round (o) eyes. Complete a Punnett square showing a cross between a mother who was heterozygous for both traits and a father who also was heterozygous for both traits. Based on Mendel’s work what could you predict about this cross? What percent chance do these parents have that the child will be blond with oval shaped eyes? What percent chance do the parents have that the child will have brown hair with oval eyes? What percent chance do the parents have that the child will have blond hair with round eyes?
Answer: 25%
Explanation:
So basically, you draw two Punnett Squares, one for each of the different traits. Since both parents are heterozygous, meaning they have a combination of traits, you would label the four sides of the square B, b, B, and b. Same thing with the eye shape trait. Label the sides O, o, O, and o. Then, you plot it like in the picture I provided. When the B and the B match up, label it BB. When the B and the b match up, label it Bb, etc. Then, since your chances of getting blonde hair (bb) is 1 in 4 (4 combinations total), the percentage of getting blonde hair is 25%. Same thing for getting round eyes, just repeat the process. Now that you have all your squares filled, you can see that your chances of getting both blonde hair and round eyes is 2 in 8, which simplifies to 1 in 4, which is equal to 25%
what is a balanced diet? find the different food groups that should be included in a balanced diet
3.what colour does the clear alcohol become once the leaf is boiled in it? Explain why?
Answer:
We boil the leaf in alcohol when we are testing it for starch because to remove the green pigment chlorophyll present in it. For the starch test, we need to observe the colour change from brown to blue when iodine is put on the leaf.When looking at the Pheasants and their relatives, what was true of the bird species that were more influenced by sexual selection?
Answer:
sinning
Explanation:
This is the location at the surface where an earthquake started
O epicenter
O middle
hot spot
seismometer
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