The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations.
Answer:
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations. Hope this helps
The excerpt is from an article that Roberto read for science class called “Using the Scientific Method to Study Tomatoes.”
The student performed an experiment to test his hypothesis about sunlight and plant height using two plants. He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. He also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results.
Roberto critiqued the work. Which problem did Roberto most likely identify?
The sample size is too small.
Too many variables are manipulated.
It is not possible to keep the conditions the same.
Controls should only be used in studies of animals.
Answer:
The sample size is too small.
Explanation:
The process of elimination helped me find this answer.
It is possible to keep the conditions the same.
there are only 2 plants and one control, that's obviously not a lot.
and controls can be used on more than studying animals.
When using the scientific method you can use as many test subjects as you can so it can help you confirm. two plants are not a lot.
I've also had a teacher confirm that this is the correct answer.
edge 2020
The problem that Roberto most likely identify is the sample size is too small. The correct option is A.
What are scientific methods?Scientific methods are a series of methods that are done to extract correct and logical results. The method includes making a hypothesis, going through the process of calculations, making a conclusion, and then the result.
Roberto is studying the growth of tomatoes under sunlight. The hypothesis is that sunlight affects the height of the tomatoes. He took plant samples, but the study took time because the plant samples were too small. So taking the right size of plants is very necessary otherwise the whole study will do in vain.
Thus, the correct option is A. The sample size is too small.
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Is the overall air quality in this country is better now than it was 40 years ago.
Explain why ecological succession occurs.
Ecological succession occurs due to the changes in physical environment and population of species. In an ecosystem, a species requires a particular set of environmental conditions under which they grow and reproduce.
Ecological succession occurs due to the changes in physical environment and population of species. In an ecosystem, a species requires a particular set of environmental conditions under which they grow and reproduce.
What is an Ecological succession?Ecological succession is the process by which plant communities develop over a period of time on the land where there was no vegetation.
The succession begins with a pioneer species such as lichens, some fungi species. Species such as lichen begins to secrete acids that begin to break the barren land into small particles.
The small particles mix with lichen remains and starts soil formation.
Thus, Ecological succession occurs due to the changes in physical environment and population of species.
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Which describes a group of organisms that are members of species
Drew observed in an experiment that algae in a nearby lake could be found at six meters below the water's surface on a clear day. On a cloudy day, Drew noted that the algae sat only one meter below the surface of the water. What was the dependent variable in Drew's experiment? the lake that Drew observed the depth at which Drew found the algae the amount of algae measured the sky conditions on a particular day
Answer:
The depth at which Drew found the algae
Explanation:
The dependent variable was the depth at which he found the algae, because that is what he measured on each day.
The independent variable was the sky conditions, since that changed from clear to cloudy, which impacted the dependent variable/the depth of the algae.
biogechemical cycles on earth serve on earth serve a variety on different purpose. what do the biogechemical cycles have in common
Answer:
Son procesos naturales que reciclan elementos en diferentes formas químicas desde el medio ambiente hacia los organismos, y luego a la inversa. Agua, carbón, oxígeno, nitrógeno, fósforo y otros elementos recorren estos ciclos, conectando los componentes vivos y no vivos de la Tierra
Explanation:
Sedimentary rock is converted into metamorphic rock with the addition of
A.nuclear energy
B. Kinetic energy
C. Potential energy
D. Heat energy
What are two specific examples of where this division occurs in nature?
Answer:
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells.
Explanation:
hope this helps you.
1. List five things you use daily whose production is a direct result of microbial action. In addition to the product include what produces the products (bacteria. mold etc). and the brand names of the products. (This is a list and does not require grammatically correct sentences.)
Answer:
Various day to day use item are made because of direct from a huge amount of different microorganisms. microscopic organisms, molds, or a blend of these. Microorganism which are utilized in food creation such as alcohols, bakery products and esters are formed with fermentation.
1. Drinks like brew and wine ' - Saccharomyces cerevisiae
2. Cheese: Penicillium roqueforti and camemberti
3. Soy sauce: by utilizing aspergillus species particularly A. oryzae
4 Bread and pastry shop items : Saccharomyces cerevisiae or Yeast by producing Co2 by the process of fermentation.
5. Fermented milk items : Lactobacillus, Bifidobacterium and lactococcus.
do you think the coyotes’ hábitat is in a state of homeostasis or not?
What characteristics of organisms does the Linnaean system of classification use to give organisms their specific name?
A. genetic
B. evolutionary
C. environmental
D. physical
Answer:
D, Physical
Explanation:
Linnaean classification uses visible physical features. It has a kingdom-to-species taxonomy. Each species has a distinct two-word Latin name. Therefore, option (D) is correct.
What is Linnaean system of classification?The Linnaean system classifies organisms according to their outward morphological and behavioural similarities. A hierarchy of taxonomic levels, from the kingdom down to the species, makes up this structure. A distinct, two-word Latin name is bestowed for each and every species.
Carl Linnaeus, the "Father of Taxonomy," named and organised species. His hierarchical categorization scheme and binomial nomenclature system were major advances to taxonomy (two part naming method). The Linnaean system organises organisms into Kingdom, Phylum, Class, Order, Family, Genus, and Species. Latin names are global. A species' scientific name includes its genus. Italics or underlining cover the name. Humans, for instance. It's Homo sapiens.
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What phenomenon is observed due to adhension
Which of the following processes do not take place in the mitochondria? a) citric acid cycle b) conversion of pyruvate to activated acetyl groups c) oxidation of fatty acids to acetyl CoA d) glycogen breakdown
Answer:
D
Explanation:
The breaking down of glycogen-glycogenolysis takes place in the cytosol of cells of the liver and muscles.it is the compensatory process for providing glucose depleted cells with extra glucose. It is the opposite of Glucogengenesis the formation of glycogen in cells.
it involves the activities of enzymes glycogen phosphorylase which catalysis the removal of alpha1-4glycosidic bonds from the glycogen molecules.Thus freeing the glucose molecules from the glycogen while retaining the 1-6 glycosidic bonds.
Its stimulation is by epinephrine hormone.while the hormones glucagon from the pancreas control its release into the blood stream,Thus the low levels of glucose in the blood stream caused glucagon to initiate the breakdown of glycogen in the liver and muscles down to glucose.As the level of this rise in the blood stream Insulin stimulates the entry of the glucose into the cells reducing the levels of blood glucose,inhibiting glucagon levels ,and therefore stopping Glycogenolysis.
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!! I'M REALLY BEHIND ON MY ASSIGNMENTS, AND NEED THE CORRECT ANSWER.
Answer:
The first two is classified as fracture and the last one as cleavage
How are tigers and goldfish share the same phylum?
Answer:
See the answer below
Explanation:
Tigers and goldsih share the same phyllum because they both posses the basic characteristics of animals in the phyllum chordata. These characteristics include;
Possession of notochord. The notochord is a rod-like structure that serves supportive functions and develops into the vertebral column in some group of chaordates.Posession of post-anail tails which is an extension of the posterior end of the of the body.Possession of dorsal, hollow nerve chord which eventually forms the brain and the central nervous system.Possession of pharyngeal gill-slits, an opening that develops into gill arches in golfishes and jaws in tigers.what are the biological important of tomatoes
Answer:
They protect heart health
Tomatoes contain an antioxidant called lycopene, which is responsible for their red color. Research suggests that in terms of heart health benefits, it's more effective to eat tomatoes and tomato products than take lycopene supplements
Explanation:
Tomatoes are the major dietary source of the antioxidant lycopene, which has been linked to many health benefits, including reduced risk of heart disease and cancer.
They are also a great source of vitamin C, potassium, folate, and vitamin K.
Usually red when mature, tomatoes can also come in a variety of colors, including yellow, orange, green, and purple. What’s more, many subspecies of tomatoes exist with different shapes and flavor.
What determines the function of a protein domain? Be as specific as you can.
Answer:
Domains are distinct functional and structural units in a protein. Usually they are responsible for a particular function or interaction, contributing to the overall role of a protein. Domains may exist in a variety of biological contexts where similar domains can be found in proteins with different functions.
Which disease can be transmitted by ticks?
Stem cells renew tissues but are all lost in childhood.a) trueb) false
Answer:
False
Explanation:
Stem cells are different type of cells in human body that can develop into different other body cells like muscles cells or brain cells and they gave the capability to renew themselves through mitotic cell division.
Stem cells are not lost in childhood but can be use to treat diseases or infection, it can be use to grow new cells and replace damaged body cells.
Explain the health effects of excess discretionary calorie consumption on the body. What alternative sweetener and fat choices can help address excess consumption of discretionary calories? Will the use/consumption of these alternatives address body weight?
Answer:
Descretionary calories are the calories left over after an individual meets his/her day by day supplement requirements.The result of Descretionary calories is high muscle fat ratio and weight gain or obesity.
Health risk :
Here and there high optional calorie intake may lead to weight on a people body optional calorie are high in fats, sugars and phenomenal admission of these kinds of food expands your danger factors for type 2 diabetes,heart ailment and disease.
Alternative sweetener and fat choices:
Fruits and vegetable with dressing as they are natural and high in sugar content and use fructose which absorbs in small intestine. The natural sweetener that can be alternatively use are stevia, aspartum, agave syrup, saccharin and sucralose and other natural alternatives.
Avoid oils high in saturated fat and include PUFA and omega rich unsaturated fat which is god for health.
These alternative food choices are known for providing less fat and no to less calories that help direct and indirectly in weight loss and lowers the risk of diseases.
A blow to the head may cause diabetes insipidus by ______. A blow to the head may cause diabetes insipidus by ______. triggering the hypersecretion of hypothalamic-inhibiting hormones triggering the hyposecretion of hypothalamic-inhibiting hormones interfering with the normal transmission of nerve impulses to the posterior pituitary interfering with the normal transmission of nerve impulses from the posterior pituitary
Answer: interfering with the normal transmission of nerve impulses to the posterior pituitary
Explanation: A blow to the head may cause diabetes insipidus by interfering with the normal transmission of nerve impulses to the posterior pituitary. Interfering with the normal transmission of ADH (antidiuretic hormone) to the posterior pituitary is done via the axons of the hypothalamic neurons. The disease is a rare one, characterized by the excretion of large amounts of severely diluted urine which cannot be reduced when fluid intake is reduced. It is generally related to a tumor or an insult to the pituitary gland, where the hormonal signals it gives to the kidneys break down, and the kidneys do not conserve water, but express the water as urine.
Which of the following E. coli proteins is responsible for advancement of the mRNA during translation?A. EF-G
B. IF2
C. IF1
D. EF-Tu
E. None of these.
Answer:
The correct answer is option A. "EF-G"
Explanation:
As its name implies, the elongation factor (EF-G) of E. coli is one vital protein that participates during the elongation phase of translocation. EF-G catalyzes the GTP-dependent ribosomal translocation step, which allows the ribosome to change from its pre-translocational to the post-translocational state, moving the process from the P to the E site of the ribosome.
Which stage of the cell cycle can lead to uncontrollable reproduction in mutated cells? (2 point)
O G2
O G1
O S
O M
Which of the following is a scientific statement which one is not scientific statement some plants eat meat
Answer:
Explanation:
Carnivorous plants are plants that derive some or most of their nutrients (but not energy, which they derive from photosynthesis) from trapping and consuming animals or protozoans, typically insects and other arthropods. Carnivorous plants have adapted to grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs. Charles Darwin wrote Insectivorous Plants, the first well-known treatise on carnivorous plants, in 1875. Carnivorous plants can be found on all continents except Antarctica, as well as many Pacific islands.
Bread and pasta are carbohydrates commonly consumed by people what chemical feature of carbohydrates makes them necessary food?
Answer:
It gives the body energy and calories
Which is true about visible light?
A. It travels fastest through a medium, such as water or air.
B. It is the only part of the electromagnetic spectrum that
we can see.
C. It cannot travel through a vacuum.
Answer:
B
Explanation:
Light travels through medium but is fastest through vacuum, so C is wrong, and A is wrong. B is the correct answer.
How are muscle cells and bone cells similar? Answer Quickly
Answer:poop
Explanation:
no figure it out yourself
What are the functions of mitotic cell division?
Answer:
The main functions of mitosis are growth and repair. Some cells once fully formed do not undergo cell division, such as nerve cells and muscle cells. Since you can never re-grow or repair these types of cells once they are mature, you must take care of the ones you have.
Explanation:
Mitotic cell division is a process of mitoses where a parent cell divides to create two identical daughter cells.
There are five phases of mitoses which include:
prophaseprometaphasemetaphaseanaphasetelophaseThe functions of mitotic cell division include:
They are used for the development of cellsThey are used for cell replacementThey are used for asexual reproduction.They are used for cell repairRead more here:
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Answer:
You need to make a graph of this data that is given to you.
Explanation:
Molecule that contains the information for the growth and functioning of the cell
Answer:
Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature. These cells cooperate with other specialized cells and become the building blocks of large multicellular organisms, such as humans and other animals. Although cells are much larger than atoms, they are still very small. The smallest known cells are a group of tiny bacteria called mycoplasmas; some of these single-celled organisms are spheres as small as 0.2 μm in diameter (1μm = about 0.000039 inch), with a total mass of 10−14 gram—equal to that of 8,000,000,000 hydrogen atoms. Cells of humans typically have a mass 400,000 times larger than the mass of a single mycoplasma bacterium, but even human cells are only about 20 μm across. It would require a sheet of about 10,000 human cells to cover the head of a pin, and each human organism is composed of more than 30,000,000,000,000 cells.
Answer: DNA, ribosome, cell membrane.
( DNA ) is the molecule that contains the information for the growth and functioning of the cell.
A ( ribosome ) is an organelle that creates specific molecules.
The ( cell membrane )is a layer that surrounds cells, separating their interior from the exterior environment.
Explanation: 1st,2nd,and 3rd Answer.