What are the steps for DNA amplification process/experiment?
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Movement of phloem sap from a source to a sink ________.
Bulk flow refers to the movement of phloem sap from a source to a sink in plants.
What is Phloem?This is a vascular tissue found in plants which helps to transport and distribution of the organic nutrients derived from photosynthesis.
Bulk flow occur when these nutrients present in the phloem sap are moved from source to sink.
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In the film, Paine recalls that a year after the starfish had been removed, the number of species decreased from 15 to eight, after three years the number went down to seven, and after another seven years it was almost all only mussels. In the control plots, the number and diversity of species were basically unchanged. Which statement(s) best explain(s) these results?
a. Keystone species are critical to the diversity and stability of an ecosystem.
b.When a predator is removed, the prey of that predator always increases, and species not eaten by the predator always decrease.
c. The disappearance of producers from an ecosystem can cause the number of predators to increase
Answer:
please can you short the question , because I don't understand it
Can someone make me a storyline about protist? It doesn’t have to be a whole story but something I can go off of?
Answer:
Protists are a diverse collection of organisms that do not fit into animal, plant, bacteria or fungi groups. While exceptions exist, they are primarily microscopic and made up of a single cell (unicellular), according to the educational website CK-12.
Identify when genetic recombination occurs in meiosis. Enter your answer in the space provided
Genetic recombination occurs during the Prolonged Prophase of Meiosis I.
What is genetic recombination?Genetic recombination occurs during the Prolonged Prophase of Meiosis and it is the process in which deoxyribonucleic acid (DNA) are broken into pieces and this piece recombines to form a new combinations of alleles.
This recombination is what leads to creating genetic diversity.
Therefore, Genetic recombination occurs during the Prolonged Prophase of Meiosis I.
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The genetic recombination occurs in meiosis during the stage of Prophase I.
What do you mean by Genetic recombination?
Genetic recombination may be defined as the conditions when the molecules of the DNA exchange their genetic material with each other.
This process of genetic recombination also known as crossing over, which is responsible for the genetic diversity among individuals.
Genetic recombination occurs when homologous chromosomes are arranged in pairs and interchange the segments of the DNA.
Therefore, genetic recombination occurs in meiosis during the stage of Prophase I.
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Which type of nutrient functions primarily as an energy source for cells?.
Answer:
The answer is Carbohydrates.
Explanation:
They are one of the most important nutrient.
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When pigs reproduce, which two types of cells pass on information from the pigs to the piglets?
Answer:
nuclei
Explanation:
Nuclei male and nuclei female to create a zygote
The two type of cells that pass on information from the pigs to the piglet is the male and female reproductive cells.
What is male and female reproductive cell?The male and female reproductive cell contains information about the parents that are passed on to the offspring.
The piglet inherit some genes from both parents through their cells.
Therefore, The two type of cells that pass on information from the pigs to the piglet is the male and female reproductive cells.
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who can be titled the brianlist
answer this
Name one organism that is selectively bred.
Answer: Crop plants with better yields. ornamental plants with particular flower shapes and colours. farm animals that produce more, better quality meat or wool. dogs with particular physiques and temperaments, suited to do jobs like herd sheep or collect pheasants.
Explanation: hope it helped :)
How does the use of fossil fuels affect the cryosphere.
Use of fossil fuels will lead to the global warming which increases the temperature of the earth ultimately leading to the melting of the cryosphere.
What is the cryosphere?The cryosphere is a term that refers to the frozen regions of the earth. This would of course include the polar ice caps which are preseved in antarctica.
Hence, the use of fossil fuels will lead to the global warming which increases the temperature of the earth ultimately leading to the melting of the cryosphere.
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Which of the following do all organisms have in common?
Answer:
What Do All Organisms Have In Common? All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
Explanation:
How many letters does the eye normally take in at each fixation point before moving on to the next fixation point?.
Answer:
three to four letters to the left before it jumps over to the next fixation point.
Explanation:
The eye usually takes about seven to eight letters fixation to the right and around four to five letters fixation to the left before it moves to the next point of fixation.
What is the role of cells in vision?Two types of specialized cells are found in the eye for vision. These are named as rods and cones. These cells are called as photoreceptors as they are sensitive to light and thus functions in response to light.
Rod cells function in response to dim light and thus are active during the night time whereas cone cells impart colour vision.
These photoreceptor cells detect the light and convert them into electrical signals. Such electric signals travel to the brain from the retina through optic nerve. Brain thus helps in the perception of objects.
Defects in the rod cells leads to night blindness. It is also due to the deficiency for vitamin A which is pre-requisite for the activation of rod cells. Colour blindness (inability to distinguish between primary colours) can result if the cone cells are damaged.
Thus, photoreceptors cells are important in vision and image formation.
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Did darwin first believe that each finch he found was a different species? was he right or wrong?.
Answer:
Wrong
Explanation:
Many mammals whose diet includes a great deal of leafy plant matter have extra compartments or extensions of their digestive tract that are not present in similar mammals that do not eat leaves. The function of the extra compartments is to Group of answer choices A. Increase surface area for absorption of nutrients into the blood B. Provide an area for their symbiotic bacteria to live C. Provide an area to store the leafy matter before digestion D. Provide an area to store water required for digestion
The function of the extra compartments in the stomach of ruminant animals is to provide an area for their symbiotic bacteria to live.
Ruminant's digestionIn order to be able to digest cellulose which is the principal component of grasses, plant-eating mammals, otherwise known as ruminants, have extra stomach compartments.
These stomach compartments exist to make the digestion of cellulose easier through a symbiotic relationship with cellulose-digesting bacteria.
The compartments house these symbiotic bacteria and partially chewed plants are stored in them to facilitate digestion.
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A growth chart is used in monitoring the growth and development of a child. the star on the chart represents a girl who is at the doctor for a routine check-up. judging by the location of the star, should the doctor conduct tests to examine her pituitary gland?
No, her height is within normal range, and her pituitary gland is working normally.
Why is the pituitary gland called the master gland?The pituitary gland is occasionally called the "master" gland of the endocrine system because it maintains the functions of many of the other endocrine glands.
The pituitary gland is no larger than a pea and is found at the base of the brain.
Thus, her height is within normal range, and her pituitary gland is working normally.
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The heart is a cone-shaped muscular organ located within the.
Answer:
mediastinum of the thorax.
Explanation:
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How the circulatory and respiratory systems work together to deliver oxygen to the body’s tissues
Answer:
The circulatory system circulates the blood to the whole body.
The respiratory system brings oxygen to the blood, and the circulatory system circulates the oxygenated blood to the cells.
Explanation:
How does the Hardy-Weinberg equation work? With only the information q2=0.0036, how do I find the other numbers? I would greatly appreciate it if someone could help explain this to me, I have been stuck on this for a while. Thank you :))
Answer:
We can find the value of p and q with the following 2 formula.
p + q = 1 and p2 + 2pq + q2 = 1
Explanation:
Here,
q2=0.0036
So, q = [tex]\sqrt{0.0036}[/tex] = 0.06
Using formula, p + q = 1
p = 1 - q
p = 1 - 0.06
p = 0.94
So, based on the value of p and q you can find other required solutions.
________ exists when the immune system does not respond to a particular antigen.
Answer:
tolerance exists when the immune system does not respond to a particular antigen.
The use of dna fingerprinting relies on the fact that:.
the remaining 16 elements must be?
answer explanation:
All group 16 elements combine with hydrogen to form hydrides. Acidic nature and bent shape decrease from water. The H-E bond length increases as the bond dissociation enthalpy decrease down the group. Thermal stability and reducing character also decreases because the H-E bond length increases down the group.
Starlings produce an average of five eggs in each clutch. If there are more than five, the parents cannot adequately feed the young. If there are fewer than five, predators may destroy the entire clutch. This is an example of.
The the behavior observed in starlings where they produce an average of five eggs in each clutch is an example of behavioral adaptation.
What are adaptation?Adaptation refers to the special features or structures possessed by organisms which enhances their chances of survival in their environment.
The adaptation can either be behavioral or structural.
In the case of the starlings, due to environmental pressures, they have learned to lay an average of five eggs.
Therefore, the behavior observed in starlings is an example of behavioral adaptation.
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Can someone help me with the entire gizmo?
it’s the natural selection gizmo
Answer:In this simulation, you are a bird hunting for moths.
Explanation:
In this simulation, you are a bird hunting for moths. You can hunt in an area with light-colored trees or dark-colored trees.
What was the experience like traveling west on the wagon trail?
Answer:
horrific.
Explanation:
not only did some people end up running out of food, but they saw their loved ones die from disease, being too cold, malnutrition, the ride was obviously not at all smooth, there could have been massive snow/rain storms. not a good time.
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You select cell a1, hover the pointer over the cell border to reveal the move icon, then drag the cell to a new location. Which ribbon commands achieve the same result?.
Cut and paste is the ribbon command which will ensure the movement of a cell to a new location.
What is a Ribbon?This is defined as a graphical control element in the form of a set of toolbars placed on several tabs.
Selecting a cell and moving it to a new location can also be done using the copy ad paste option which was why it was chosen as the most appropriate choice.
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In the process of ————. DNA is used as a template for making another type of Nucleic acid?
Answer:
transcription, RNA
Explanation:
Can someone please help me? :(
Answer:
B i think or C
Explanation:
Because in the way I am thinking it's B, "School cooks should be educated on allergies to peanuts." It makes the most sense
Answer: b
Explanation:
it can't be a since source 2 says "few people recognize..." which contradicts "students know what to do..."
it can't be c because there is no source comparing peanut allergies now vs. past.
it can't be d because you cannot infer this from the given data.
leaving us with b because since a majority of peanut allergies happen at school and not many know how to deal with an event with a peanut allergy, then teaching cooks about peanut allergies will help students in the case of an allergic reaction in school.
hope this helped! ♡
What name is given to the specific location of a gene on a chromosome?
Answer: A locus is the specific physical location of a gene or other DNA sequence on a chromosome, like a genetic street address. The plural of locus is "loci".
The name which is given to the specific location of a gene on a chromosome is called Locus.
What do you mean by Chromosomes?Chromosomes may be defined as a stringy structure of nucleic acids and protein located in the nucleus of most living cells, bearing genetic information in the form of genes.
Locus may be defined as a specific place on a chromosome that is occupied by an allele. It represents the physical site of a specific gene on a chromosome.
Therefore, the name which is given to the specific location of a gene on a chromosome is called Locus.
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Which of the following is least involved in the mechanical breakdown of food, digestion, or absorption?.
Answer:
Esophagus
Explanation:
In the digestion and absorption of food, the esophagus is the least involved.
It is a part of the digestive system, but all it does is simply pass the food down to the stomach.
The one that is least involved in the mechanical breakdown of food, digestion, or absorption is esophagus. The correct option is d.
Even though it is a vital component of the digestive system, the esophagus plays a much smaller role in the mechanical digestion of food than the other alternatives.
A muscular tube called the esophagus moves food from the mouth to the stomach by a process known as peristalsis, which calls for repetitive muscle contractions.
Its main job is to push food down the digestive tract so that it can travel more easily. Food is mostly mechanically broken down in the mouth while being chewed by the teeth and in the stomach while being churned by muscles.
The majority of digestion and nutrient absorption occurs in the small intestine.
Thus, the correct option is d.
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Your question seems incomplete, the probable complete question is:
Which of the following is least involved in the mechanical breakdown of food, digestion, or absorption?.
a) Stomach
b) Teeth
c) Small intestine
d) Esophagus
What gas in the air is used by plants to make their own food?.
Carbon dioxide
_________________
Answer:
Carbon Dioxide
Explanation:
they breathe in carbon dioxide and give out oxygen as a waste product for them, so the answer is Carbon Dioxide.
Hope this helps :D
Which process do you think offers a greater chance of nondisjunction—mitosis or meiosis? explain your answer