Answer:
Recombinant DNA (or rDNA) is made by combining DNA from two or more sources. ... DNA fragments are cut out of their normal position in the chromosome using restriction enzymes (also called restriction endonucleases) and then inserted into other chromosomes or DNA molecules using enzymes called ligases.
A red flower (RR) and a red flower (Rr) have the same:
A. genotype
B. haplotype
C. Phenotype
Answer:
the answer is a. genotype
How do environmental signals, like light influence the distribution of auxin in a plant? A. By increasing the concentration of auxin B. By destroying the auxin C. By causing auxin to migrate in to the shaded portion D. By decreasing the cells sensitivity the auxin
Answer:
C. By causing auxin to migrate in to the shaded portion
Explanation:
Auxin is the most important plant hormone involved in the apical growth of plant parts. Auxin is evenly distributed in a plant with a normal light condition, however, when a particular part of a plant is exposed to sunlight, that illuminated part contains less auxin. The hormone is transported to the shady part of the plant via diffusion.
This causes more auxin to be present in the shady part than the illuminated part, hence, the shady part experiences a faster and elongated growth. This elongated growth in the shaded portion of the plant causes it to grow towards the direction of the light, a process called PHOTOTROPISM.
Are Mammut mastodons the same species as Paleomastodons?
Answer:
These woolly mammoths were not closely related to mastodons. Mammoths and mastodons may have once roamed the Earth together, but they represent two distinct species of the Proboscidean family. ... Mammoths and modern elephants are closely related members of the same family (Elephantidae).
Explanation:
No, they are not the same species.
Are mammoths and mastodons the same species?Despite the superficial resemblance, mastodons were distinct from mammoths. Mastodons were shorter and stockier than mammoths with shorter, straighter tusks. Mastodons were wood browsers and their molars have pointed cones specially adapted for eating woody browse.
Are mastodons and mammoths related?While mastodons look a lot like modern elephants, they are not closely related. The ancestors of modern elephants and mammoths went their separate ways about 5 million years ago, and mastodons branched off even earlier, about 25 million years ago.
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Some adaptations, on the other hand, become useless. These adaptations are vestigial: remaining but functionless. Whales and dolphins have vestigial leg bones, the remains of an adaptation (legs) that their ancestors used to walk. Why did the author include this selection?
Answer:
This is because vestigial parts are usually homologous to most of the structures that are functional in other species of organisms. E.g.. the Vestigial legs which are non functional in whale and Dolphins, are useful to other organisms. Hence, if these organisms possessed these structures, they should share certain characteristics with each other.Therefore these organisms can be said to evolved from one another.Thus their vestigial organism should be included by the author as evidence of evolution.
Explanation:
Which of the following characteristics must an object possess in order to be considered alive?
Answer:
Movement
Respiration
Nutrition
Irritability
Growth
Excretion
Recreation
competition
Adaptability
Which class of biomolecule do the molecules in the table belong to?
O A.
carbohydrates
O B.
proteins
O C.
lipids
D.
nucleic acids
Lipids are the class of biomolecule in the table. Thus option C is correct.
What are different types of biomolecules ?
Biomolecules are major building blocks of all living organisms which includes Carbohydrates, Proteins, Fats, Nucleic Acids and the basic components are carbon, hydrogen and oxygen atom.
Carbohydrates are polyhydroxy aldehydes or ketones collectively called as saccharides or sugar; It can be up different types monosaccharide, oligosaccharide and polysaccharides based on composition of number of sugar molecule.
Proteins are polymers of amino acids which are joined by peptide bond and form polypeptide, can be classified as primary, secondary, tertiary and quaternary protein.
Nucleic acids are the carrier of genetic material can be up two types such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), made up of nitrogenous base, sugar and phosphate.
Lipids are organic water insoluble biomolecule related to fatty acids, they include sterols, mono-, di- or triglycerides, phospholipids, etc.
Thus option C is correct.
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How liver performs homeostatic functions?
Answer:
See below
Explanation:
Answer in my own words:
The liver helps with preserving homeostasis by controlling the production of glucose
Key words:
1: Homeostasis
2: Glucose
3: Liver
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Hope this helps.
Which system controls the menstrual cycle in human females. Please help ASAP. :)
Answer:
The answer is option A.
Endocrine system
Hope this helps.
the number of protons in the nucles of an atom i the atoms _________.
Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Explanation:
A scientist makes an image of all of a person's chromosomes. What
technique is she using?
Answer:
She is using a karyotype
Explanation:
A karyotype is an image that helps in analysis to a person's chromosome. It is a picture of all chromosomes of an individual. Scientists take this picture or image sample of chromosomes of the individual is isolated, stained or examined under the microscope. This image helps in analysis and study of the chromosome.
Thus, the correct answer is karyotype
Answer:
Karotyping
Explanation:
How much do you think your pulse will increase during the two activities?
Answer:
what activities are you talking about
Explanation:
Compounds like the pesticide DDT may bring about the evolution of new strains of organisms by...?
(1) destroying food producers
(2) acting as natural selecting agent
(3) mixing two different sets of genes
(4) creating new ecological niches
Answer:
(2) acting as natural selecting agent
Explanation:
Compounds like the pesticide DDT may bring about the evolution of new strains of organisms by acting as a natural selecting agent.
Evolution is generally defined as a gradual change to the characteristics of organisms over a period of time.
When DDT is used on a particular population of pest, those that are weak within the population die off, leaving only those that are strong within the population to survive and multiply. The DDT acts a selecting agent for the survival gene in the pest and the survived gene eventually evolve into a new, DDT-resistant strain pest in no time.
The correct option is option (2).
As a cell becomes larger, its volume __________. A. stays the same in relationship to its surface area B. increases much faster than its surface area C. increases much slower than its surface area D. decreases much faster than its surface area
Answer:
I would think it would increase faster than the surface area because the volume is the whole cell and the surface area is just the outside.
Explanation:
Hope this helps, have a good day! :)
(Brainliest would be appreciated?)
As a cell becomes larger, its volume stays the same in relation to its surface area. So the correct option is A.
What is cell division?There are two types of cell division. These are mitosis and meiosis. Most of the time when people talk about cell division, they are referring to mitosis. This is the process of the formation of new body cells. Meiosis is another kind of cell division that results in the formation of egg and sperm cells.
Mitosis is the fundamental process of life. During the process of mitosis, a cell duplicates itself along with all of its contents. This includes the chromosomes of the cells. Then the cell splits to form two identical daughter cells.
All the steps of mitosis are carefully controlled by certain genes because of the critical nature of this process. When mitosis is not being regulated correctly, various health problems such as cancer can arise.
Meiosis is the next type of cell division. This ensures that humans have the same number of chromosomes in each generation. Meiosis is a two-step process that reduces the chromosome number by half, from 46 to 23, to form sperm and egg cells. This is also called the reduction division.
Therefore the correct option is A.
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what is the original source of the energy stored in fossil fuels
Answer:
Explanation:
The sun
Answer:
the sun
Explanation:
Why do we have ACE2 proteins?
Answer: It is the key to blocking infections
Explanation: I hope this is right :)
Which bone is identified in the picture below?
A. Sternum
B. Patella
C. Fibula
D. Tarsal
Answer:
your anwser would be C) fibula
Which blood type could be given as a transfusion for patient with ab blood when the rh factor is unknown?
Answer:
O+
Explanation:
I took the review and verified the answer
What are biogeochemical cycles?
Answer:
In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic and abiotic compartments of Earth.
Explanation:
Unknown source.
True or false
1. All plant hormones does not facilitate growth of plants in root system and shoot system equally.
2. Cytokinins hormone inhibit seed germination while it is in the fruit.
Answer:
1. False
2. false
Explanation:
on my life I guessed uno But dw g they are correct I swear on your mothers life
using the letter ‘A’ what is the genotype of an organism that is homozygous dominate?
a. AA
b. Aa
c. aa
d AaA
What is the name of the organic molecule modeled below? A propane B propene C propyne
The given organic molecule is the structure of propene. The given molecule has a single double bond. Hence, Option B is the correct answer to the statement.
How is nomenclature done?The organic molecule nomenclature is determined by the presence of a single bond, double bond, or triple bond. The functional group has an important role too.
The single carbon is called mono. if two carbons are present, the compound is called di. if three carbons are present, the compound is called prop. In the given molecule, there are three carbons.
If a single bond is present, that bond is called "ane." If a double is present, it is called "ene". "Yne" is called when three bonds or triple bonds are present. By combining the carbon number and the bond, the nomenclature is complete. Here, three carbon molecules are present with a double bond; hence, it is called propene.
Hence, the correct answer is option B, which is propene.
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Can seaweed help curb global warming? (At least 7 sentences)
Answer:
Professor and climate change activist Tim Flannery believes that massive farms of seaweed, a crop with enormous carbon sequestration capabilities, could potentially draw enough carbon dioxide from the atmosphere in a short enough time frame to mitigate some of the worst effects of climate change. Flannery acknowledges that his radical approach could raise some negative externalities, and sweeping carbon under the ocean isn’t a permanent solution. But for those who worry that the climate crisis is a lost cause, he offers reassurance that climate change is a soluble issue.
PLEASE HELP!!! Why is meiosis necessary for sexual reproduction?
La Rafflesia arnoldii es una planta tropical con una enorme flor rojo-sangre, que emite calor y despide olor a carne descompuesta. ¿para qué le sirven a esta planta estas adaptaciones?
Answer:
Rafflesia arnoldii is a tropical plant with a huge blood-red flower, which emits heat and emits the smell of decomposed meat. What use are these adaptations to this plant
Explanation:
The smell is adaptation for pollination.This is because it attracts insects which carry on the process of pollination.
Its possible Endothermy characteristic is for mimicry Its releases heat to attract the pollinators- blowflies.The endothermic mechanism is well pronounced during flora development: which further buttress the fact that this is related to pollination to attract blowflies, and not to thermoregulation.
ow you could create a 3D model, using household materials, of two bones connected by a joint filled with cartilage.
Answer:
by helping it every time and working hard
the process by which organisms take in nutrients to use for life process
Answer:
photosynthesis processs its right
A tick and a dog have this type of relationship?
*mutualism
*commensalism
*neutralism
*parasitism
Answer:
Parasitism
Explanation:
First, let's define each term.
Mutualism: A symbiotic relationship where both organisms benefit
Commensalism: An association where one organism benefits, and the other is not harmed or benefited.
Neutralism: 2 organism interact but they have no effect on each other.
Parasitism: A symbiotic relationship where a parasite lives in or on another organism and harms the organism.
A dog and a tick are an example of parasitism. The tick lives on the dog and drinks the dog's blood. This is the food for the tick, so the tick is benefiting by gaining a food source. The dog can be harmed if the tick is carrying a disease, such as Lyme disease.
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Why do cells use fat and starch for long-term energy storage instead of ATP molecules?
A.) ATP is used for long-term storage, while fat and starch are used for immediate energy.
B.) ATP is used for short-term energy and to build molecules of starch and fat.
C.) Fat and starch are unstable and can be stored short-term, while ATP molecules are stable and stored long-term.
D.) Fat and starch are stable if used as energy immediately, while ATP is used as long-term storage
Answer:Cells use fat and starch for long term energy storage instead of ATP molecules because it is hard to breakdown fat in a very short time while ATP can be broken down in a very short time. ATP is mainly used while doing short bursts of exercises. Fats have a very strong bond of molecular chains and this makes it hard to breakdown quickly.
Explanation:
Answer:
ATP is used for short-term energy and to build molecules of starch and fat.
Give one reason Mendel chose pea plants for his experinment
Answer:
Gregor Mendel chose pea plants for his experiments because they are easy to raise, have many offspring per mating, can fertilize themselves and have varieties in genotype and phenotype that are easily observable. These characteristics make pea plants ideal in the study of genetics and heredity.
Explanation:
hope this helps you :)
Answer:
see below
Explanation:
Mendel chose pea plants for his experiments because they have easily identifiable traits like pea plants are either tall or short, which is an easy trait to observe. Also, pea plants grow quickly, so he could complete many experiments in a short period of time.
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