Answer:
The purpose of breeding experiments is to develop varieties or different plants with flowers expressing a new combination of form and shape.
Explanation:
Breeding or plants breeding refers to process of changing or altering plants characteristics or traits to produce new plants varieties with desirable traits or characteristics. The purpose of breeding is to develop varieties plants that have the desired traits or characteristics . Also, it's purpose is to develop varieties of plants with flowers expressing a new combination of form and shape.
Experimental breeding is a way of crossing organisms with different alleles to produce new variety of crop with desired characteristics.
who is Charles darwin
Answer:
Charles Darwin came up with the theory of evolution.
Charles Darwin is a writer who wrote the book Orgin of species . He is the one that gave the idea of evolution . his proposition that all species of life have decended over time from common ancestors. He is a english naturalist, geologist and biologist
Use this dichotomous key for insect identification to identify the insect shown. 1. a. Insect has one pair of wings. Order Diptera b. Insect has two pairs of wings. Go to #2 2. a. Front wings thicker in texture than hind wings Go to #3. b. Front and hind wings are same texture throughout. Go to #4 3. a. Front wings are short Order Dermaptera b. Front wings cover entire abdomen Order Coleoptera 4. a. Wings with scale on all parts of their area. order Lepidoptera b. Wings without scales Go to #5. 5. a. Hind wings smaller than front wings. Order Ephemeroptera b. Front and hind wings nearly equal in size. Order Odonata An insect with 2 pairs of wings is standing on a branch. The insect pictured is in the order Diptera. Ephemeroptera. Coleoptera. Odonata. WILL GIVE BRAINLIEST ANSWER asap
Answer:
The correct answer is Odonata.
Explanation:
Dichotomous key is an instrument that permits users to decide or identify the organism correctly in the natual world. It is utilized in distinguishing plant and creature species dependent on their characters.
Using the key :
the Odonata has following characters
1. Insect has two pairs of wings. so go to 2
2. Front and hind wings are same texture throughout. so go to 4
3. Wings without scales so Go to 5
4. Front and hind wings nearly equal in size so 5b that is Odonata.
Answer:
The correct answer is Odonata.
Explanation:
Dichotomous key is an instrument that permits users to decide or identify the organism correctly in the natual world. It is utilized in distinguishing plant and creature species dependent on their characters.
Using the key :
the Odonata has following characters
1. Insect has two pairs of wings. so go to 2
2. Front and hind wings are same texture throughout. so go to 4
3. Wings without scales so Go to 5
4. Front and hind wings nearly equal in size so 5b that is Odonata.
Which of these statements best explains why the rainfall in volcanic regions increases after a volcanic eruption?
The volcano releases particles which help form water droplets.
The volcano releases heat causing clouds to form.
The molten lava from the volcano helps form water droplets.
The increase in fertility of soil around the volcano helps produce rain.
Answer:
The volcano help releases particles which help rain to fall.
Explanation:
Volcano is a form of opening in the Earth crust that make particles that are warmer in it surronding such as magma, hot lava, volcanic ashes to escape from beneath it. Volcano happen as a result of magma rising above Earth surface making the bubbles to spring forth. There is rain, lightning and thunder during volcanic eruptions.
Rainfall near a volcanic region increases after volcanic eruptions because all the ash particles that rises to the atmosphere attract and collect water droplets, thereby causing abundant of rainfall wen the water droplets are released.
Match the enzymes to their role in the DNA replication process
Answer: A = 3, B = 5, C = 1, D = 2, E = 4
Explanation: A. RNA primase
B. ligase
C. helicase
D. polymerase
E. topoisomerase
Pairs
1. unwinds the DNA molecule
2. synthesizes the complementary daughter strands
3. synthesizes RNA primer at the initiation point
4. creates nicks ahead of the replication fork to relieve tension from unwinding
5. joins the Okazaki fragments together
5 Points
Great Britain would have a much colder climate than it does if not for the
O A. polar easterlies
B. gulf stream
C. trade winds
D. jet stream
SUBMIT
Hello There!
Answer:
B. Gulf stream
Explanation:
Great Britain would have a much colder climate than it does if not for the gulf stream.
Colistin is an antibiotic used to treat infections in the bloodstream. Some bacteria are resistant to Colistin. Explain how these bacteria have become resistant to Colistin.
Answer:
They have adapted to it
Explanation:
Explain why detritivores, decomposers and omnivores are not assigned trophic level
Answer:
They can be found in several trophic levels, as they are related with several trophic level, hence, they cannot be placed on a specific trophic level.
Explanation:
A trophic level is a specific position occupied by a group of organisms on a good chain in relation to their nutrition.
Dentrivores feed on the waste of other organisms and cannot be really placed on a specific trophic level, likewise decomposers, of which they feed and decompose the body of organisms.
Omnivores feed on both plants and animals, which includes producers and consumers. Placing omnivores on a specific trophic level would not be really straightforward also.
Imagine that you have added a fluorescent tag to all of the amino acids inside of a bacterium. You then infect the bacterium with a phage. At the end of the phage's lytic cycle, you examine the new phage particles for fluorescence. Which of the following new phage particle components would you expect to exhibit the fluorescent tag?A. phage DNAB. phage RNAC. phage capsomeresD. A and BE. A, B, and CF. none of the above
Answer:
The answer is A.
Explanation:
The bacteriophage is an organism that attacks bacteria and uses them to replicate it's DNA to reproduce and multiply.
If all the amino acids of the bacteria are flagged with fluorescent tag, then the new bacteriophage's DNA will exhibit the fluorescent tag because it will be constructed using the bacteria's protein molecules in the first place. So the answer is A.
I hope this helps.
What is the basic unit of structure and function of all living organisms?
mitochondrion
DNA
nucleus
cell
answer:
the answer is d. (cells)
The punnets square shows a text cross of mice that are heterozygous for both traits what will the offspring be fill in the white boxes of the punnets square with all the possible offspring genotypes
Answer:
Punnett Square answer as shown in the image
Explanation:
3. Mutations that occur in the BPG binding cavity on deoxyhemoglobin can at times result in the substitution of lysine and histidine residues present with aspartic acid and phenylalanine residues. Explain how these changes would impact BPG binding to deoxyhemoglobin along with the impact it would have on oxygen transport with hemoglobin
Answer:
It affects the oxygenation of the tissues in a negative way, that is, causing tissue hypoxias.
Explanation:
What will happen is that BPG, having a different relationship with deoxyhemoglobin, hemoglobin will not give oxygen to organs or tissues during glycolysis at times when the sympathetic nervous system is activated or even in the maintenance of physiological tissue vitality, therefore it will trigger a drop in the partial pressure of the gas both in the blood and in the tissues since they will be retained in the hemoglobin structure without being able to release it.
The process that uses carbon dioxide but not light energy to make sugars is called
Answer:
The Calvin Cycle
Hope this helps.
carbon fixation
Explanation:
Carbon dioxide is converted into sugars in a process called carbon fixation; photosynthesis captures energy from sunlight to convert carbon dioxide into carbohydrate.
when the community climax in an ecosystem has only a single type of climax, the development of the climax community is controlled by ___ of that region.
a) the climate
b) the life forms
c) the soil texture
d) the pioneer community
Answer:
A.
Explanation:
because the climax community is composed of species beat adopted to average conditions in that area
When the community climax in an ecosystem has only a single type of climax, the development of the climax community is controlled by the climate of that region. Option A is correct.
The climate of a region is the most important factor that controls the development of a climax community. The climate determines the temperature, precipitation, and other abiotic factors that influence the growth and survival of plants and animals.
In a region with a single type of climax community, the climate is relatively uniform and there is little variation in the abiotic factors. This means that the same species of plants and animals will be able to survive and thrive in the region, regardless of the specific location. The life forms, soil texture, and pioneer community can all influence the development of a climax community, but they are not as important as the climate. Option A is correct.
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The ___ cycle is not a nutrient cycle.
Answer:
water cycle
Explanation:
A medical term with a suffix usually describes a/an
Answer:
a condition, an action, or a relationship.
Explanation:
While viewing stained onion root tip cells you notice that distinct chromosomes cannot be observed in most of the cells. This is because most of the cells Group of answer choices
Answer:
This is because must of the cell must be in INTERPHASE.
Explanation:
The onion root tip is the growing part of the onion and many cells in it undergo mitosis. In the lab, it is prepared in a way that the cells become flat on the microscope slide so that you can observed them well.
In the cell cycle, most of the onions root tip cells are in interphase, they spend most of their life in interphase. In interphase, there is no observable changes in the celks, the cells keep on growing and the nucleus is been duplicated. This is because most of the onion root cells spend most of their time reproducing and growing in the interphase stage. During the interphase, the cells can still be seen in dark spots because the nucleus is still present and prophase has not started yet.
Why would damage to the nervous tissue in the spinal cord lead to paralysis?
Damage results in the loss of signals to muscles to produce movement.
Damage results in the inability of the body to differentiate between voluntary and involuntary movement.
Damage results in the inability of the body to produce connective tissue to support movement.
Damage results in the decreased production of actin and myosin for contraction
Answer:
B. Damage results in the inability of the body to differentiate between voluntary and involuntary movement
Explanation:
Answer:
b
Explanation:
Which carries the code for protein synthesis from the cell nucleus to the cytoplasm?
Answer:
mRNA, or messenger RNA
Answer:
the right answer would be MRNA or the messenger of RNA
Explanation:
What brings greater concentrations of dissolved nutrients to the ocean surface?
Answer: Upwelling
Explanation:
Upwelling is a process of movement of dense, cold and nutrient rich water from the bottom of the ocean to the surface layers due to wind currents. This process replaces the warm and nutrient deficient water from the surface.
This process is useful for the growth of phytoplanktons and other sea plants growing in the surface layer of oceanic water.
what is a animal and what types of animals are there
Answer:
Animals are multicellular eukaryotic organisms that form the biological kingdom of Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development.
Explanation:
Scientists have recently estimated that there are approximately 8.7 million species on Earth. They believe that 1-2 million of those species are animals.
What are the characteristics of static electricity?
PLZZZZ HELPP!!
Explanation:
Static electricity is a form of electrical energy which is produced by the imbalance of positive and negative charge.
The characteristics of static electricity are:
1. The charges do not move and therefore called static in nature.
2. The charges of static electricity possess less energy, therefore, remain for a small period.
3. Static electricity is build up mostly on non- humid dry days.
4. The charge of static electricity does not generate electric fields but they are constant.
5. Due to a constant electric field, no magnetic field is generated.
6. The static electricity can be observed in the lightning, Van-de graff generator and xerox machines.
Changes in DNA sequence from one generation to the next may result in offspring that are altered in fitness compared with their parents. The process of change and selection over the course of many generations is the basis of
Answer:
This question lack options, options are:
A. Mutation
B. Evolution
C. Heredity
D. Reproduction
The correct answer is B.
Explanation:
Evolution is essentially a process of genetic change over time, that is, it is the result of accumulated changes in the composition of the gene pool. Variation is the raw material of evolution. Without genetic variation, evolution is not possible. The ultimate source of all genetic variation is mutation. A mutation is a stable and inheritable change in genetic material. Mutations alter the DNA sequence and therefore introduce new variants. Many of these variants are usually eliminated, but occasionally some of these variants can be successful and incorporated into all individuals of the species. Mutation is a factor that increases genetic diversity. This is how evolution explains the origin of various life forms as a result of changes in their genetic load. The inheritance of these variations through offspring of parents who carry the variation, although the genetic endowment of a single organism is the same throughout life, the genetic makeup of a species, understood as a whole (genetic background), changes throughout from many periods of life. Mutations and variability, the product of natural DNA recombination, provide diversity in the genetic material of a species.
10. In the water cycle, liquid changes to gas by
O precipitation
O condensation
evaporation
O freezing
Answer:
evaporation
Explanation:
when the liquid heated for a long time it removes steam in form of gases
In the water cycle, liquid changes to gas by evaporation, which is in Option C. The water cycle, also known as the hydrological cycle, describes how water circulates through the Earth's ecosystems.
What is the water cycle?The water cycle involves a series of processes that include evaporation, condensation, precipitation, and infiltration. Evaporation is the process by which water changes from a liquid state to a gaseous state, such as water vapor. This occurs when energy (in the form of heat) is absorbed by the water, causing the water molecules to move faster and break free from their bonds to form a gas. After water evaporates, it can undergo condensation, which is the process by which water vapor changes back into liquid water.
Hence, in the water cycle, liquid changes to gas by evaporation, which is Option C.
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How have the fields of biotechnology, genetic engineering, and molecular biology affected the agricultural job
market?
A.They have created more jobs
B.They have spread the industry internationally
C.They have made the market obsolete
D.They have decrease the demand for farmers
Answer:
I think It's A. Hope it helps! :)
Explanation:
Two children attend the same preschool, but one child is at the facility on Mondays and Wednesday, while the other child attends the facility on Tuesdays and Thursdays. Both children become ill with Erythema infectiosum within a day of each other. What is this type of pathogenic transmission called
Answer:
Fomite transmission.
Explanation:
This is a form of indirect transmission. This type of transmission occurs when inanimate object are involved in the indirect transfer of the pathogens to an uninfected host.
The inanimate object is often referred to as fomites.
In this example, the facilities in the daycare would be the fomites involved in the indirect transfer of the pathogen from one child to the other child.
Rutherford tracked the motion of tiny, positively charged particles shot through a thin sheet of gold foil. Some particles traveled in a straight line and some were deflected at different angles. Which statement best describes what Rutherford concluded from the motion of the particles? Some particles traveled through empty spaces between atoms and some particles were deflected by electrons. Some particles traveled through empty parts of the atom and some particles were deflected by electrons. Some particles traveled through empty spaces between atoms and some particles were deflected by small areas of high-density positive charge in atoms. Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.
Answer:
Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.
Explanation:
Rutherford concluded from his experiment that there are empty spaces present in most parts of the atom while a heavy positive charge is present in the nucleus of an atom due to which the tiny positively charged particles deflects because of positive-positive charge repulsion. Most of positively charged particles passes undeflected which indicated the presence of empty spaces in the atoms. The electrons revolve around the nucleus have no effect on the deflection of positively charged particles.
Rutherford conducted a legendary experiment to determine atomic structure in which he bombarded a thin gold foil with alpha particles. In the aftermath of the experiment he concluded that; Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.
The gold foil experiment showed that the atom is composed of a massive core which contains positively charged particles.
This massive core is at the center of the atom surrounded by electrons that move in orbits. Hence, the resulting model of the atom was called the planetary model.
The deflected positively charged particles were deflected by this small area of high-density positive charge in atoms.
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Each clan will be isolating two different bacteria,Pseudomonas sp. and Bacillus sp., from the same soil sample. What two traits provide the basis of your Pseudomonas sp. enrichment strategy
Answer:
The former bacteria, Pseudomonas sp., has the ability to utilize benzoate as a source of carbon. Pseudomonas sp. can also migrate in the direction of areas with higher oxygen concentrations.Whereas the latter, Bacillus sp., does not possess these characteristics.
Explanation:
The two traits mentioned above will provide the basis upon which the strategy for enrichment can be made.
What occurs when two species have the
need for the same resource?
Answer:
Competition. Additionally, with competition comes survival of the fittest.
Explanation:
Competition is formed when more than one species must fight for the same resource/commodity.
Which inequalities are true? Check all that apply.
DOVE
Vo <3
Vox
V6 <2
V6 > 8
16
Answer:
Vo<3, V6<2,
Explanation:
Inequalities is a mathematical expression use to relate two values together.
From the above question, Vo<3, V6<2 is the true because the two option relate two values together.
Vo< 3 because V0 present is one and it is less.
V6 <2 is because V6 is not up to 2.
Dermis _____ system is responsible for thermoregulation and for development of inflammatory skin processes
Answer:
Integumentary system
Explanation:
This system is responsible for development of skin, hair, nails, glands, and nerves and it serves as a protector. There are many organs in this system too.