true/false. Animal allergens can only infect workers through inhalation, or breathing in small airborne particles
FALSE
Answers
The statement “Animal allergens can only infect workers through inhalation, or breathing in small airborne particles” is false because animal allergens can also cause allergic reactions through skin contact, and ingestion of contaminated food or water.
Animal allergens are proteins found in the skin, hair, saliva, urine, and feces of animals such as cats, dogs, mice, and rabbits. Workers who handle or work in close proximity to these animals may be at risk of developing allergies, asthma, or other respiratory diseases.
However, exposure to animal allergens can also occur through skin contact, such as touching an animal or handling contaminated materials like bedding or cages. Ingestion of contaminated food or water can also lead to exposure, as can injection via insect bites or stings from insects that have been in contact with animal allergens, the statement is false.
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Related Questions
to what does "descent with modification" refer?
a. All species come from preexisting species and are changed over time.
b. All species come from preexisting species but stay basically the same.
c. Some species come from preexisting species and are changed over time.
d. Some species come from preexisting species but stay basically the same.
Answers
Answer:
a. All species come from preexisting species and are changed over time.
Answer:
A
Explanation:
All species come from preexisting species and are changed over time.
State four (4) differences between a plant cell and an animal
Answers
Organ system:Put the following in order from smallest to largest:
Cells
Organs
Tissues
Answers
Cells, tissues, organs
Answer:
Cell, Tissue, Organ
Explanation:
during his pea plant studies mendel found that the f2 generation produced a nearly 3:1 ratio of purple to white flowers.which principle explains why the ratio is not exactly 3:1
Answers
During his pea plant studies, Mendel found that the F2 generation produced a nearly 3:1 ratio of purple to white flowers. The law of segregation is the principle that explains why the ratio is not exactly 3:1.
The law of segregation is the principle that describes how the alleles of a gene are separated during the formation of gametes. Every individual has two copies of each gene, which are called alleles. One allele comes from the mother, and the other comes from the father. During the formation of gametes, the alleles segregate from each other, so that each gamete contains only one allele from each gene.
This explains why the ratio of dominant to recessive traits in the F2 generation is not exactly 3:1. Instead, the ratio is a probabilistic outcome, based on the fact that each individual has two alleles for a particular gene, and each allele has an equal chance of being passed on to the offspring. When the F1 hybrids produce gametes, each allele has a 50% chance of being passed on to the offspring, and the resulting ratio of dominant to recessive traits is determined by probability.
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A large protein needs to enter a cell to help preform a function explain what process the cell must use to allow the protein to enter and why
Answers
Answer:
The protein is too large to simply diffuse across the phospholipid bilayer of the cell, so it uses phagocytosis to diffuse across, where it is contained in a vesicle and pinched into the cell? Credits to yahoo answer. Hope I could help sweets.
Cell membranes acts as a barrier for the large,charged and polar molecules due to their hydrophobic nature.
These molecules are transported with the help of membrane proteins such as carrier proteins across the plasma membrane by a process known as facilitated diffusion. These membrane proteins diffuse larger molecules across the cell membrane that cannot be transported by simple diffusion.
A culture medium that is contaminated with 10 10 m −3 microbial spores of microorganisms will be heat-sterilized with steam of 121 ∘ C. At 121 ∘ C, the specific death rate of the spores can be assumed to be 3.2 min −1 [1]. When the contamination must be reduced to one in 1000 fermentations, estimate the required sterilization time.
Answers
The estimated required sterilization time to reduce the contamination to one in 1000 fermentation is approximately 3.125 x 10⁶ minutes.
To estimate the required sterilization time to reduce the contamination to one in 1000 fermentations, we need to consider the specific death rate of the spores at 121°C. The specific death rate is given as 3.2 min⁽⁻¹⁾.
First, we need to determine the time required for a single spore to be completely killed. We can do this by taking the reciprocal of the specific death rate: 1/3.2 min⁽⁻¹⁾ = 0.3125 minutes (or approximately 18.75 seconds).
Next, we need to calculate the number of sterilization cycles required to reduce the contamination to one in 1000. Since the contamination is initially 10¹⁰ spores, we divide this by 1000 to get 10^7 spores.
Now, we multiply the time required for a single spore to be killed by the number of sterilization cycles needed: 0.3125 minutes/cycle x 10⁷ cycles = 3.125 x 10⁶ minutes.
Therefore, the estimated required sterilization is approximately 3.125 x 10⁶ minutes.
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When dealing with ____________ it is important to educate consumers so that they do not fall victim to greenwashing/marketing schemes.
Answers
When dealing with Ecolabelling , it is important to educate consumers so that they do not fall victim to green washing/marketing schemes.
Ecolabelling (also "Eco-Labels") and Green Stickers are labelling systems for food and consumer products. The use of Eco labels is voluntary, whereas green stickers are mandated by law.
Some labels quantify pollution or energy consumption by way of index scores or units of measurement, while others assert compliance with a set of practices or minimum requirements for sustainability or reduction of harm to the environment. Many ecolabels are focused on minimising the negative ecological impacts of primary production or resource extraction in a given sector or commodity through a set of good practices that are captured in a sustainability standard. Through a verification process, usually referred to as "certification", a farm, forest, fishery, or mine can show that it complies with a standard and earn the right to sell its products as certified through the supply chain, often resulting in a consumer-facing ecolabel.
Ecolabelling systems exist for both food and consumer products. Both systems were started by non-governmental organizations (NGOs).
At least for food, the ecolabel is nearly identical with the common NGO definition of the rules for ecolabelling. Label trust is an issue for consumers because some manufacturers and manufacturing associations have set up "rubber stamp" labels to greenwash their products with fake ecolabels. High trust levels can be created when ecolabels apply for governmental recognition as formal Certification Marks (recognized by logos or names with 'CTM', CM or 'CertTM'). Typically this means schemes approved as a Certification Mark have had the government department responsible declare that the scheme has a standard and certifies that they are 'Competent to Certify'.
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Pepsin is an enzyme produced in the stomach. Pepsin has an optimum pH that is very acidic, between a pH of 1.0 and 2.0. In an experiment involving the enzyme pepsin, the pH is raised from 2 to 11. What will be the MOST LIKELY effect of this on the reaction?
A) The enzyme will denature, stopping the reaction
B) The activation energy of the reaction would be reduced
C) The rate of reaction will reduce due to a decrease in the kinetic energy of the molecules
D) The rate of reaction will increase due to the increased number of collisions of the enzyme and substrate
Answers
BRAINLIEST + 100pts!!! NEEDS ASAPPPP
matching!! see image.
Answers
Hydroponics - D
Aquaponics - B
Aquaculture - C
Permaculture - A
the neuron has an orientation preference of 45 degrees. briefly describe how neurons in primary visual cortex are thought to acquire an orientation preference.
Answers
Neurons in the primary visual cortex acquire their orientation preferences through a process called visual experience-dependent plasticity. During development, the visual cortex undergoes a critical period when it is highly receptive to environmental inputs.
Random Initial Connections: Initially, in the absence of specific input, neurons in the primary visual cortex have random and diverse connections.
Visual Stimulation: As the individual is exposed to visual stimuli, such as patterns and images, specific neurons in the primary visual cortex receive input from corresponding regions of the retina.
Patterned Inputs: Different orientations of visual stimuli activate different sets of neurons in the primary visual cortex.
Neurons that respond to specific orientations are selectively strengthened, while those not responsive to the particular orientation are weakened through competitive interactions.
Synaptic Plasticity: The strengthening of synapses occurs through synaptic plasticity mechanisms, such as long-term potentiation (LTP), which enhances the connection strength between active neurons.
Refinement and Selectivity: Over time, as the individual continues to experience visual stimuli, the connections of neurons in the primary visual cortex become refined and selective for specific orientations.
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Would you consider a soft drink to be high in carbohydrates?
Answers
A soft drink is considered to be high in carbohydrates as it contains about 1-12% of the carbohydrate content. Only the zero-calorie products have low carbohydrate content.
What are carbohydrates?Carbohydrates are the biomolecules which are also called as sugars. These are made up of carbon, hydrogen, and oxygen elements. Carbohydrates are the primary source of energy which are broken down through cellular respiration to produce energy in the form of ATP.
The sugar content of soft drinks varies in the range between 1% to 12%. Glucose, sucrose, or fructose are generally added to the soft drinks as a natural carbohydrate sweetener. Sucrose is a disaccharide, made up of glucose and fructose molecules.
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Which of the following results best refutes the alternative hypothesis that selective permeability is a consequence of the cell wall
Answers
The results which best refutes the alternative hypothesis that selective permeability is a consequence of the cell wall is: when beetroot cells are placed in a solution with cellulase, the solution remains clear.
A cell wall are those parts of a cell that holds the cell together and it has a definite structure.
Furthermore, a cell membrane is not affected by the process of cellulose digestion, but this process hurts the cell wall structure and damages it.
As a result of this, when a beetroot cell is put in a solution that contains cellulase, the solution does not remain clear because selective permeability is a consequence of the cell wall.
The cell membrane's selective permeability is its capacity to distinguish between various types of molecules, permitting some to pass while preventing others. This selective quality is somewhat influenced by the inherent membrane diffusion rates of certain compounds.
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All forms of life are made from?
Answers
Answer:
all forms of life are made from cell
how is matter conserved during photosynthesis?
Answers
Answer: I hope this helps. Let me if this is right or wrong Have a good day
Explanation:
The law of conservation of matter is connected to photosynthesis because matter like carbon dioxide and water go into the plant and, with the help of energy, the plant creates a new form of matter -- sugar, or glucose, and releases the oxygen into the atmosphere that is formed from the carbon dioxide.Matter is conserved during the process of photosynthesis and cellular respiration by converting the raw materials into products during photosynthesis and again release the raw materials with the help of break down in the process of respiration.
Match the correct organelle with the correct process:
o
photosynthesis - chloroplast; cellular respiration - mitochondria
O photosynthesis - nucleus; cellular respiration - mitochondria
O photosynthesis - ribosomes, cellular respiration - nucleus
O photosynthesis - mitochondria; cellular respiration - chloroplast
Answers
Answer: photosynthesis - chloroplast; cellular respiration - mitochondria
Explanation:
the correct organelle with the correct process are photosynthesis chloroplast; cellular respiration mitochondria
what is photosynthesis ?The process in which plants, algae and certain bacteria use light energy of sunlight, water, carbon dioxide and convert light them into chemical energy and starch called as photosynthesis.
Photosynthesis occur in special organelles named chloroplast which has its own DNA, genes and hence can synthesize their own proteins.
Chloroplasts have stroma, fluid, and stack of thylakoids known as grana, three types of chlorophyll such as chlorophyll a, chlorophyll b, and carotenoids.
Oxygenic photosynthesis is commonly observed in plants, algae and cyanobacteria where electrons are transferred from water to carbon dioxide by using light energy, to produce energy, oxygen is produced along with carbohydrates.
Anoxygenic Photosynthesis is seen in certain bacteria, such as green sulphur bacteria and purple bacteria.
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how would you check that the destarching had been effective
Answers
Answer:
Test a leaf or two for the presence of starch in order to determine whether the plant is completely destarched. If a positive result is obtained - leaves turn blue-black, the plant should be left under in the cupboard or under the coverd bell jar for longer, until a negative result- no colour change - is obtained.
You discover a new protein that binds stronger to the + end vs. the - end of actin microfilaments. What is true about this protein?
a. This protein is myosin.
b. This protein has higher affinity for ADP-actin vs ATP-actin.
c. None of the above.
d. This protein has higher affinity for ATP-actin vs ADP-actin.
Answers
The correct answer is d. This protein has higher affinity for ATP-actin vs ADP-actin.
The information provided states that the new protein binds stronger to the plus end (+ end) of actin microfilaments compared to the minus end (- end). This characteristic is not specific to myosin alone but can be observed in other proteins as well.
Regarding the affinity for ADP-actin and ATP-actin, the preference for binding to the plus end of actin microfilaments suggests a higher affinity for ATP-actin rather than ADP-actin. ATP-bound actin (ATP-actin) is typically found at the growing plus end of actin filaments, while ADP-bound actin (ADP-actin) is more prevalent at the minus end. Therefore, a protein that exhibits stronger binding to the plus end would likely have a higher affinity for ATP-actin.
Hence, option d is the correct answer: This protein has higher affinity for ATP-actin vs ADP-actin.
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help meee pretty please
Answers
Answer:
it is 2 and 4 and 5
Explanation:
hope this helps pls mark as brainliest
Answer:
1. Exoskeleton
2. Jointed limbs
3. bilaterally symmetrical
Have an amazing day!!
Please rate and mark brainliest!!
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3.
4.
5.
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8.
Word Bank: Simple cuboidal, Stratified cuboidal, Simple columnar, Stratified columnar, Transitional, Pseudo-stratified columnar, Simple squamous, Stratified squamous +
Answers
The given tissue diagram represents following tissues:
2. Stratified cuboidal
3. Pseudo-stratified columnar
4. Stratified squamous
5. Simple cuboidal
6. Simple squamous
8. Transitional
What is epithelium?
All of your body's internal and external surfaces are covered by a type of tissue called epithelium, which also lines your digestive, reproductive, and excretory tracts. They carry out numerous tasks, including secretion, sensing, absorption, and protection.
Epithelial tissue is divided into three types based on the morphology of the cells: squamous, cuboidal, and columnar.The tissue is classified as simple or stratified depending on the number of layers. Pseudo-stratified, ciliated, or transitional are examples of sub classifications. The cells of the glandular epithelium synthesize and expel a variety of macromolecules.
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explain how the human body regulate the blood glucose levels after a breakfast of maize meal porridge
Answers
Answer:
Normally, blood glucose levels increase after you eat a meal. When blood sugar rises, cells in the pancreas release insulin, causing the body to absorb glucose from the blood and lowering the blood sugar level to normal.
Explanation:
How are proteins and nerve cells interrelated?
Answers
Answer:
The answer to Your Question Is down below :)
Explanation:
Working with mice, scientists have discovered that a particular protein helps nerve cells extend themselves along the spinal cord during mammalian development.
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Is the yeast we use for baking bread considered "alive"? Students in biology class made the claim that yeast is a living thing. To find evidence, they were given a beaker containing warm water (22oC). To that, they added one package of dry baker’s yeast and 0.5 grams of sugar. After waiting 20 minutes, the students made the observations recorded in the data table seen here.
1. What evidence could be used to support their initial claim? All but one could apply.
A) one yeast cell is budding or reproducing
B) yeast is made of cells.
C) the yeast responds to changes in the environment
D) the yeast contain nucleic acid.
2. One student in the group said that another characteristic of life that could be listed as evidence was that the yeast were using energy. The others disagreed. What evidence and logic could the student use to support her claim? Which answer choice does not “fit” with the supporting evidence?
A) yeast is undergoing fermentation and this is a form of cellular respiration
B) the bubbles produce represent carbon dioxide. Carbon dioxide is a by-product of respiration
C) cellular respiration is a sign that an organism is using energy and undergoing metabolism
D) sugar is a source of chemical energy for cellular respiration
Answers
A, C, D, and E all support the student's claim that the yeast is using energy, B does not fit with the supporting evidence.
What evidence could be used to support their initial claim?The student who proposed the evidence that the yeast were using energy could use the observations made in the data table to support her claim.The bubbles in the beaker indicate that the yeast are undergoing fermentation, which is a form of cellular respiration.This process is a sign that the organisms are using energy and undergoing metabolism. Carbon dioxide, a by-product of respiration, is being produced as well.Additionally, sugar is a source of chemical energy for cellular respiration.Therefore, these observations support the student’s claim that the yeast are using energy and are alive.This type of evidence is known as empirical evidence, which is evidence that is based on observations and measurements.Therefore, the student’s claim was supported by empirical evidence.To learn more about empirical evidence refer to:
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in order to reuse an enzyme after the conclusion of an enzyme catalyzed reaction, what must occur?
Answers
The enzyme must be regenerated or reactivated. During an enzyme catalyzed reaction, the enzyme facilitates the reaction but remains unchanged itself. However, at the end of the reaction, the enzyme may become temporarily inactive or bound to the reaction product.
In order to reuse the enzyme, it must be regenerated or reactivated through various processes such as washing with buffer solutions, changing the pH or temperature, or adding co factors or co enzymes. Once the enzyme is regenerated, it can be used again to catalyze additional reactions.
Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy. They bind to the reactants substrates at their active sites, forming an enzyme substrate complex. After the reaction, the enzyme releases the products and remains unchanged, allowing it to participate in another reaction.
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A ____________ library is made from the mRNAs in a differentiated cell and represents only protein-coding genes.
Answers
A cDNA (complementary DNA) library is made from the mRNAs in a differentiated cell and represents only protein-coding genes.
A cDNA library is a collection of complementary DNA molecules synthesized from the messenger RNA (mRNA) transcripts present in a specific cell type or tissue. The cDNA is synthesized using the enzyme reverse transcriptase, which converts the mRNA into complementary DNA. By using this technique, the non-coding regions of the original mRNA are not included, and only the protein-coding genes are represented in the resulting cDNA library. This allows researchers to focus on the genes that are actively transcribed and translated into proteins in the specific cell type or tissue under investigation.
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Which two processes during cellular respiration release chemical energy
stored in chemical bonds?
A. The conversion of NADH to NAD*
B. The splitting of glucose
C. The production of ATP by ATP synthase
D. The conversion of FAD to FADH2
Answers
The splitting of glucose release chemical energy stored in chemical bonds.
In process of cellular respiration, the energy in food is converted into the energy that is used by the body's cells. In process of cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is converted to ATP.
Cellular respiration, is the process that takes place in the mitochondria of organisms which break down sugar in the presence of oxygen and release energy in form of ATP. Carbon dioxide and water are released as the waste products.
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The fossil at point X has been dated to be 65 million years old. What can
relative dating indicate about the fossil at point Y? *
A) The distortion of organism by the fault
B) The type of environment the organism lived in
C) The age of the organism when it died
D) The similar time period in which the organism lived
Answers
Answer:
D.The similar time period in which the organism lived
You observe that the sky at noon is darkening.
Answers
Answer:
it depends on what time of the year it is and where you live on this planet
Explanation:
Which has a greater volume, 1 kg of gold or 1 kg of silver? Explain your answer.
Answers
Gold has a density 19.30 g/cm^3, while Silver has a density of 10.49 g/cm^3. If we compare these two densities, the density of Gold is almost 2x that of Silver. Therefore, Silver has a greater volume.
1kg of silver has greater volume than 1kg of gold.
HOW TO CALCULATE VOLUME:
The density of a substance is related to its mass and volume and this can be represented in the following formula:Density = mass (g) ÷ volume (mL)
The density of gold is 19.3g/mL
The density of silver is 10.49g/mL
For a mass of 1kg, which is equivalent to 1000 grams, of silver (Ag) and gold (Au). The volume of silver and gold can be calculated as follows:Volume of silver (Ag) = 1000g ÷ 10.49g/mL = 95.33mLVolume of gold (Au) = 1000g ÷ 19.3g/mL = 51.8mLTherefore, 1kg of silver has greater volume (95.3mL) than 1kg of gold (51.8mL).Learn more: https://brainly.com/question/2058404?referrer=searchResults
Why do you think you arent able to create a divergent oceanic/continental boundary
Answers
Answer:
Explanation:
The oceanic plates are themselves formed from the divergent boundary, so probably not. Even if a new rifting occurred exactly at the boundary, the result would eventually be that the ocean floor surrounds the
Study the diagram. A student on Earth's surface at position A has just seen the sunrise. Which one
of the following is true for a second student at position B?
А
The second student has already seen the same sunrise.
B
The second student has not yet seen the same sunrise.
С
The second student is watching the Sun start to set.
D
The second student will see the Sun rise in 24 hours.
Answers
Answer:
The answer is D