Why are crops genetically modified?
A. To decrease price
B. To resist pesticide
C. To make them toxic for humans
Answers
Crops are genetically modified in other to resist pesticides, hence option B is the correct answer.
What is Pesticide?Pesticides are compounds used to control pests. Herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampricide are all examples of pesticides.
Furthermore, insecticides are poisonous to insects and other arthropods. Miticides (also known as acaricides) are chemicals that kill mites that feed on plants and animals. Microorganisms that kill, suppress or out-compete pests such as insects or other microorganism pests are referred to as microbial pesticides.
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Related Questions
there are no real boundaries for natural systems. explain how this applies to systems in the human body. explain why scientists establish boundaries for natural systems.
Answers
Stabilizing boundaries is an idea to relate that humans can keep the resilience and stability of Ecosystem in mind. If these boundaries are crossed, That would effect environment and lead to drastic or inevitable planetary changes.
The planetary boundaries have a negative effect on other planetary boundary because of Earth environment. Example include, if their is a change in climatic condition ecosystem may be badly effected and may cause difficulty in human interference.
It is considered that smaller the system, the sharper is its boundary. Large systems may have multiple boundaries as they interface with multiple systems.
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what happens when a myosin head releases from actin? multiple choice question. ach binds to troponin. the filament slides back to the resting position. the filament remains in the same place. calcium is transported back into the t-tubules.
Answers
The correct option is: The filament remains in the same place.
ADP phosphate is formed when ATP hydrolyzes. This releases energy, allowing the myosin protein to be cocked into this high energy position and sort of attach to the next rung of our actin filament. We're currently in a high-energy state. The phosphate is released in step three.
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explain the characteristics of living things
Answers
Living things have a number of characteristics that set them apart from nonliving things. These characteristics include Organization, Metabolism, Growth and development, Response to stimuli, Reproduction, Homeostasis, Adaptation.
Organization:
Living things are highly organized, with a clear hierarchy of structures from the smallest (such as cells) to the largest (such as entire organisms).
Metabolism:
Living things are able to convert energy from their environment into forms that they can use to sustain themselves. This process is known as metabolism.
Growth and development:
Living things grow and change over time. This can involve physical changes, such as getting taller or developing new body structures, or it can involve changes in behavior or function.
Response to stimuli:
Living things are able to sense and respond to stimuli in their environment. This can involve physical responses, such as moving toward or away from a stimulus, or it can involve changes in behavior or function.
Reproduction:
Living things are able to reproduce, either sexually or asexually, in order to create new individuals of their own kind.
Homeostasis:
Living things are able to maintain a stable internal environment, even when the external environment is changing. This process is known as homeostasis.
Adaptation:
Living things are able to adapt to their environment in order to survive and thrive. This can involve physical adaptations, such as developing new body structures or behaviors, or it can involve genetic adaptations, such as the evolution of new traits.
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Living things have the following characteristics: growth, movements, respiration, excretion, nutrition, and reproduction.
GROWTH: All living things grow in some way or another. Be it an increase in the number of cells due to cell division, or the proper organization of the cell, all living things show some sort of growth.
MOVEMENT: Living things are mobile in nature. They show some sort of movement in their lifetime.
RESPIRATION: Living things respire. it is a chemical reaction that causes energy to be released from the food that they intake.
EXCRETION: It is the process of excreting or removing the products that are formed during the breakdown of food that the being does not require.
NUTRITION: It is the process in which the living thing intakes nutrition. It can happen in different ways in different beings.
REPRODUCTION: It is the process in which the organism creates its progeny and passes on genetic information to it. It has various levels of complexity depending on the organism.
How does folding dough help it to rise
Answers
folding dough increases the air trapped between the layers which cause it to rise
Animals can be trained to perform many behaviors through _____; that is, by providing well-timed rewards as the animals progressively better approximate the desired behaviors.
Answers
Animals can be trained to perform many behaviors through shaping; that is, by providing well-timed rewards as the animals progressively better approximate the desired behaviors.
In the field of psychology, shaping can be described as using reinforcement in order to learn or teach new behaviors. By learning new behaviors, a specified target behavior can be achieved.
In animals, the method of shaping is used in order to teach them the desired behavior. The animals are taught progressively behaviors that will eventually lead to attaining the desired behavior. Through each progression, the animals are given rewards so that they are motivated to learn more and work harder towards learning the desired behavior.
The method of shaping is the best for training animals as they can learn easily through reinforcements.
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A fish farmer has a large pool used to grow a species of fish. The farmer decides to add a second species of fish to the pool. Both fish species feed on the same type of food, but the fish farmer does not increase the amount of food added to the pool, maintaining the same carrying capacity in the pool.
Which graph shows how the population of the two fish species will change?
Answers
Answer:
D
Explanation:
Explanation: The capacity of fish to the ratio of population change increased and showed a variable degree of measurements.
in aquatic environments, ddt is converted to dde, a chemical that affects reproduction in predatory birds such as pelicans and bald eagles. in the 1950s, populations of these predatory birds plummeted. how did dde from aquatic environments end up affecting eagles?
Answers
DDT and its breakdown product DDE (dichlorodiphenyldichloroethylene) are highly persistent in the environment and can accumulate in the food chain. Aquatic organisms such as fish can accumulate DDT and DDE from contaminated water, and predatory birds such as eagles can then consume these contaminated fish.
DDT (dichlorodiphenyltrichloroethane) is a synthetic pesticide that was widely used in the United States and other countries in the mid-20th century to control pests in agriculture and to combat insect-borne diseases such as malaria.
DDT and DDE affect the birds' reproductive systems by interfering with the normal production of hormones such as estrogen and androgen. This can lead to reduced egg production and poor eggshell quality, which in turn can cause the eggs to break during incubation or to be less able to support the development of the embryo. In addition, DDE can accumulate in the fatty tissues of adult birds, and can be passed from the female to her offspring through the egg.
As a result, populations of predatory birds such as pelicans and bald eagles declined dramatically in the 1950s and 1960s. This decline was eventually linked to DDT and its breakdown products, which were found to be present in the birds' tissues. The problem was compounded by the fact that these chemicals were also affecting other organisms in the food chain, such as fish and invertebrates, and thus reducing the birds' food supply.
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Explain how PHOTOSYNTHESIS works in plants
Answers
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
What level of the energy pyramid contain the most energy ??
Answers
Answer:
Producers
Explanation:
Good luck!
A scientist should be creative in order to?
Answers
Answer:
Scientists use creativity to determine which smaller questions are likely to yield results, imagine possible answers to their questions, and devise ways to test those answers.
Explanation:
Answer:
Find out new things.
Explanation:
If every scientist that ever existed wasn't a little creative, then how would they figure out so many cool new things.
what is the function of a stabilizer in muscular performance? causes opposite action to one desired cooperates with other muscles prevents undesirable action of contracting muscles supports body segment against pull of contracting muscle
Answers
The function of a stabilizer in muscular performance is to support body segments against the pull of contracting muscles. This prevents undesirable actions of contracting muscles, as well as cooperating with other muscles to produce the opposite action to the one desired.
A stabilizer in muscular performance refers to a muscle that supports the body segment against the pull of the contracting muscle. It is a muscle that causes an opposite action to the one desired while cooperating with other muscles. It also prevents the undesirable action of contracting muscles.
The function of stabilizers in muscular performance is to stabilize the joint during movements and prevent injuries. Stabilizer muscles are essential in that they help maintain posture and balance while providing support to joints during movements. They prevent unnecessary movements or motions that could cause injury to the joints. For example, in the shoulder joint, the rotator cuff muscles function as stabilizers by preventing excessive motion of the humerus, preventing injury to the joint.
The muscles that stabilize the spine are known as core stabilizers. They stabilize the spine during movement and provide a solid base for the extremities to push off during various activities. Therefore, stabilizers play an essential role in maintaining stability and preventing injuries during movements.
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Where can the offspring genotypes be found in a Punnett square?
Answers
if the codon for phe is 5'- u u c 3' what is the anticodon that would be found on the trna that carries phe?
Answers
if the codon for phe is 5'- u u c 3' , AAG is the anticodon that would be found on the trna that carries phe. Their function is to base pair with the codon on a strand of mRNA during translation.
An amino acid's specific genetic information is encoded by a codon, which is a DNA or RNA sequence made up of three nucleotides (also known as a trinucleotide). A trinucleotide sequence called an anticodon is found at one end of a transfer RNA (tRNA) molecule and is complementary to a corresponding codon in an mRNA sequence. During protein synthesis, each time an amino acid is added to a developing polypeptide, a tRNA anticodon couples with the corresponding codon on the mRNA molecule to ensure that the correct amino acid is incorporated into the polypeptide.
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Does mutation, and migration increase or decrease the amount of genetic variation within and between populations
Answers
Mutation and migration are two of the primary mechanisms that lead to genetic variation within and between populations. Here's how they affect genetic variation:Mutation:Mutation is a change that occurs in the DNA sequence of a gene.
This can happen due to a variety of reasons, such as errors during DNA replication, exposure to mutagenic agents (e.g. radiation, chemicals), or through the action of transposable elements. Mutations are random and can occur anywhere in the genome. Some mutations can be harmful, some can be neutral, and a few can be beneficial. Harmful mutations are generally eliminated from the population through natural selection, while beneficial mutations may spread through the population if they confer an advantage. Neutral mutations may accumulate over time and contribute to genetic variation.Migration:Migration is the movement of individuals from one population to another. It can occur between populations of the same species or between different species. Migration can bring new alleles (variant forms of genes) into a population that were absent or rare before. It can also increase the frequency of existing alleles if the migrants carry those alleles. In this way, migration can increase the genetic diversity of a population or reduce genetic differences between populations.Therefore, mutation and migration both increase the amount of genetic variation within and between populations by introducing new genetic variation or changing the frequency of existing genetic variation.
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Which of the following correctly describes how epithelial tissues gets nourishment?
From blood vessels deep to the basal layer.
Epithelial tissue does not need nourishment, it is dead.
From blood vessels scattered throughout the cells.
From the air surrounding the apical surface.
Answers
From the air surrounding the apical surface.
Answer:
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what are three structures the cells shown below would have in common ?
Answers
Answer:
they have cytoplasm, DNA, and mitochondria.
please answer this before 2:55 est time .
Answers
Explanation:
First of all let me tell you that potential energy in any object it possesses is due to its position where as kinetic energy on any object it possesses is due to its motion.
21 K
22 P
23 P
24 P
25 K
26 P
27 K
28 K
29 P
30 P
Which ancestor of the modern-day horse is also the closest common ancestor to parahippus?
Answers
The ancestor of the modern-day horse that is also the closest common ancestor to Parahippus is Mesohippus. Mesohippus lived approximately 40-35 million years ago during the Eocene epoch. It was a small horse-like animal, about the size of a dog, and had three toes on its front feet and three or four toes on its hind feet. Mesohippus is considered to be an important transitional form in the evolution of horses because it had adaptations for grazing, such as high-crowned teeth, and a more advanced limb structure compared to its earlier ancestors.
Parahippus, on the other hand, lived around 23-17 million years ago during the Miocene epoch and had a larger body size and more specialized teeth compared to Mesohippus.
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If dometicated dog, hair type i controlled by two different allele. The allele for wire hair i (H) and the allele for mooth hair i (h). When two heterozygou dog are croed , what percentage of the offpring i expected to be homozygou for mooth hair?
Answers
The wire hair allele is (H), and the smooth hair allele is (h), and when two heterozygous canines are crossed, the level of the posterity is supposed to be thoroughbred for smooth hair, which is 25% present in choice B.
Heterozygous is a hereditary term used to portray an organic entity that has two distinct alleles for a specific quality. This implies that the organic entity has acquired two distinct adaptations of similar quality, one from each parent. In hereditary qualities, heterozygosity is a state wherein the two alleles of a quality present in an individual are not quite the same as one another, subsequent in various characteristics and attributes.
This is on the grounds that the two heterozygous canines have a hereditary cosmetics of (Hh). This implies that when the two canines mate, every one of their gametes has a 50/50 possibility of having either the H or h allele. By consolidating these two gametes, the posterity will have a 1/4 possibility of being homozygous for smooth hair (hh). This compares to a 25% possibility of having homozygous smooth hair posterity.
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In which sentence does the verb agree with the subject?
Several of the readers were searching for books.
Neither of the men were looking in the right place.
Many of the girls plays on the sidewalk.
One of the students type on the computer.
Answers
Answer:
all of them except
"Many of the girls plays on the sidewalk."
Explanation:
Subject here "girls" is plural which mean if a subject is plural, its verb must also be plural. verbs REMOVE an s from the singular form.
therefore inorder for it to be correct, s must be remove from play
Answer: Many of the girls plays on the sidewalk.
Explanation: "Plays" needs to be removed. Correct sentence: Many of the girls play on the sidewalk.
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Protozoa are known for their cell walls.True or False? Amoeba can be parasitic. True or false Bacteria have cell walls: true or falseA cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondria. It could be a cell from which of the following? A)a bacterium B)a plant, but not an animal C)either a plant or an animal D)an animal but not a plant E) any kind of organismAmoeba are: a) anaerobic organisms b) aerobic organismsA cellular diameter of 40 micrometers is equivalent to: (a)0.4mm (b)0.04mm (c)40nm (d).4cmHow does the composition of bacterial cell walls differ from that of plant cell walls? a)Bacteria have an extensive network of crosslinked teichoic acids in their cell walls, while plant cell walls are composed primarily of cellulose b)Bacteria have cell walls composed of peptidoglycan, while plant cell walls are composed primarily of cellulose. c)Both plants and bacteria have cell walls composed of cellulose; the cellulose fibers are more extensively crosslinked in bacteria than in plant cells. d)Bacteria have cell walls composed of chitin, while plant cell walls are composed primarily of cellulose.Chloroplasts enables the Euglena to be photoautotrophic? true or falseA Trypanosome is a(n): a) Ciliate b) euglenozoan c) Brown algae d)loboseAmoebozoan aramecium are prey for: a)other protists. b)bacteria. c)other species of Paramcium d)land animals.Which of the following protozoa are parasites?a)Euglena b)Paramecium caudatum c)Trypanosoma cruzi d) Amoeba proteus e)Giardia intestinalis f) Plasmodium falciparum
Answers
The following are the answer to the given microorganisms related questions:
Cell walls of protozoa are well-known for this. (False)
Parasitic amoeba are possible. (True)
Cell walls exist in bacteria. (True)
Enzymes, DNA, ribosomes, plasma membrane, and mitochondria are just a few of the chemicals and structures found in a cell. It might be: (C) either an animal or a plant.
An amoeba is: aerobic organisms (b)
40 micrometre cellular diameter is equivalent to: (b) 0.04mm
The Euglena is able to be photoautotrophic thanks to chloroplasts. (True)
A (n) trypanosome is: b) Prey species for euglenozoan Amoebozoan aramecium include: b) Parasites are bacteria and protozoa: Trypanosoma cruzi and Plasmodium falciparum are parasites.
Bacterial cell walls different from plant cell walls in composition
Ans- (b) Cell walls of bacteria are made of peptidoglycan, whereas cellulose predominates in plant cell walls.
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What is the common name of Musca domestica?
Answers
The House fly (commonly known as Housefly) is the common name of Musca domestica, it is an insect of the suborder Cyclorrhapha.
What is the House fly?The House fly is an insect from the order Diptera which is characterized by having wings that allow them to fly.
The House fly is widely extended across the world and it is a highly adaptable species that lives in different climate conditions.
In conclusion, the House fly (commonly known as Housefly) is the common name of Musca domestica, it is an insect of the suborder Cyclorrhapha.
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Answer:
The house fly
Explanation:
The house fly, Musca domestica Linnaeus, is a well-known cosmopolitan pest of both farm and home. This species is always found in association with humans or the activities of humans. It is the most common species found on hog and poultry farms, horse stables and ranches.
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Domain of cells without a nucleus that are everyday bacteria.
a. Bacteria
b. Archaea
c. Eukaryota
d. Animalia
Answers
The domain of cells without a nucleus that is everyday bacteria is Bacteria. So, option a. is correct.
Bacteria are single-celled organisms that lack a nucleus and other membrane-bound organelles. They are part of the Prokaryotes group, which also includes the domain Archaea. Unlike Eukaryota and Animalia, which contain cells with a nucleus and organelles, Bacteria are simpler in their cellular structure.
Archaea (b) is another domain of prokaryotic organisms, but they are distinct from bacteria due to their unique genetic and biochemical features. They can be found in extreme environments, such as hot springs, deep-sea hydrothermal vents, and acidic environments.
Eukaryota (c) is a domain that includes all organisms with cells containing a nucleus and membrane-bound organelles, such as plants, animals, and fungi. Animalia (d) is a kingdom within the Eukaryota domain, consisting of multicellular organisms that are heterotrophic and typically mobile.
So, option a. is correct.
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What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
Answers
Answer:
Hormones
Explanation:
Hormones is the term used for chemical secretion of endocrine glands responsible for changes taking in the body.
__________ refers to the age between 22 and 26 weeks at which a fetus can survive in the event of a premature birth. A. Fetal stage B. Embryonic stage C. Germinal stage D. Age of viability
Answers
Answer:
age of viability
Explanation:
A substance is moved ______ its concentration gradient using the energy of ______ .
Answers
A substance is moved against its concentration gradient using the energy of an electrochemical gradient.
The cell must employ energy to transfer substances against a concentration or electrochemical gradient. This energy is derived from adenosine triphosphate (ATP), which is produced during the cell's metabolism.
Pumps are active transport systems that function against electrochemical gradients. Small particles are continually passing across plasma membranes. In the face of these passive motions, active transport maintains ion and other chemical concentrations required by live cells.
These processes may use a large portion of a cell's metabolic energy supply. For example, the majority of a red blood cell's metabolic energy is utilized to maintain the cell's essential balance of external and internal sodium and potassium levels.
Because active transport systems rely on a cell's metabolism for energy, they are vulnerable to various metabolic toxins that disrupt ATP supply.
There are two ways for transporting tiny molecules and materials with low molecular weight. Primary active transport transports ions across a membrane and generates a charge differential across the membrane, which is directly dependent on ATP.
Secondary active transport is the movement of material caused by the electrochemical gradient generated by primary active transport and does not require ATP directly.
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How can a bicarbonate indicator be used to show respiration is taking place
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Select the correct answer. what primarily determines the carrying capacity of a population? a. birthrate b. death rate c. biotic and abiotic limitations d. rate of migration e. minimal viable population
Answers
Biotic and abiotic limitations determine the carrying capacity of a population.
What is carrying capacity?Carrying capacity is defined as the maximum number of individuals that an environment can sustain without destroying the environment. It is determined by various factors such as food availability, water, and space.
So we can conclude that Biotic and abiotic limitations determine the carrying capacity of a population.
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1. Which of these physical trait(s) did
scientists claim were connected to
certain behavioral trait(s)?
Answers
Answer:
It turns out that the body color and wing length genes are linked, which means they are located very close to each other on the same chromosome. In addition, if two genes are linked in this way, then gametes are more likely to contain specific allele combinations.
Explanation:
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In DNA Adenine (A) bonds witha.Guanine (G) b.Thymine (T) c.Cytosine (C) d.Adenine (A)
Answers
the correct answer is the letter B. THYMINE
In DNA, these are the base pairs:
Adenine- Thymine
Guanine- Cytosine