Answer:
B: Population
Explanation:
Population is the number of people (well species) living in the same area at the same time.
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.
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:
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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Biological evidence of the age of the earth includes _____.
Answer:
Biological evidence of the age of the earth includes radioactive dating of rocks, fossil evidence, comparative anatomy and molecular clocks
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.
A wetland was drained to build a mall. Two years later, there were no more toads in
that
area. Why did the toads disappear?
A: the toads were frightened and went into the wood
B: The toads get their food from the wet land ecosystem
C: the toads were destroyed by the construction equipment
D: the toads died because toads cannot breathe out of water.
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:
are
PLEASE HELP QUICK!!!
What types of organisms
being modified through genetic engineering?
A. all organisms
B. bacteria only
C. plants only
Answer:
A. All organisms
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 is a balanced diet? find the different food groups that should be included in a balanced diet
what components the atmosphere is increasing?
Answer:
The concentration of other natural radiatively active atmospheric components, such as methane and nitrous oxide, is increasing as well due to agricultural, industrial and other activities. The concentration of the nitrogen oxides (NO and NO2) and of carbon monoxide (CO) are also increasing.
Explanation:
Which of the following is a accurate depiction of primary ecological succession?
Answer:
This question lacks options, however, primary succession will be explained for detailed comprehension.
Explanation:
Ecological succession is the gradual series of changes that occurs in an ecosystem, charging it's structure and composition over time. It is of two types namely; primary and secondary successions.
Primary succession is characterized by the "LACK OF NO SOIL". It begins on a barren piece of land e.g rocks, with no form of life previously known to colonize the area. In primary succession, the barren land is first colonized by organisms such as lichens etc., which are collectively regarded to as PIONEER SPECIES.
2. Which fiber type would one expect to find in ligaments?
Answer:
Collagen fibers
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
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.
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:
How does genotypic variation occur?
Answer:
Genotypic variation occurs when alleles are randomly sorted during sexual reproduction. ... Some types of organisms can increase genetic variation through reproduction. They are able to combine the genetic material of two parents, rather than copying the genetic material of a single parent.
Brainliest would be great!
what part of the project plan that tells another person about what you are doing?
a. Evaluation c. Name of
b. Objectives project
d. Materials
B. Objectives project.
#Continuar aprendiendoHow much does a 5'9" woman weigh
Answer:
they can be from 100 lbs all the way to 1000 lbs
Explanation:
1 point
Interpret the graph above. At which of the following times was Earth's
temperature most similar to what it is today? *
100 million years ago
250 million years ago
310 million years ago
400 million years ago
Answer:
310 million years ago
Explanation:
you can see that the temperature 310 years ago is similar to what it is today
An electric motor converts electrical energy into which kind of energy?
Potential
Kinetic
Stored
Chemical
Answer:
Kinetic Energy
Explanation:
Hope This Helps!
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 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
Around 97 percent of the water on Earth's surface is ______________________.
a fresh water
b salt water
c dirty water
d evaporated water
Answer:
Salt water I think. Mostly oceans right?
Explanation:
Answer:
Letter B is the answer! Hope it helps!
Explanation:
What percentage of The offspring wiill have black fur
Answer:
This means that ¾ of the offspring have black fur, while the other ¼ are white. At this point students now have all the information needed to fill in the “predicted percentage” portion of the phenotype Punnett Square. The percentage for the black fur is 75% and white fur is 25%.
Explanation:
In eukaryotic cells, what can RNA do, that DNA cannot?
Answer:
There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
Explanation:
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.
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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water enters a plant cell through the what? no link please and hey des.
Answer:
water enter a plant cell through a tube called the xylem vessels
ln the early development of human embryo,the skeleton is made almost entirely of
Answer:
The skeleton consists of bone developing from mesoderm, except within the head where neural crest also contributes connective tissues. Each tissue (cartilage, bone, and skeletal muscle) goes through many different mechanisms of differentiation.
Explanation:
Hope it helps :)