Answers
Answer:
Pathogens
Explanation:
The antibodies destroy the antigen (pathogen) which is then engulfed and digested by macrophages. White blood cells can also produce chemicals called antitoxins which destroy the toxins (poisons) some bacteria produce when they have invaded the body.
Related Questions
Assignment: lab report
Diffusion across a semi permeable membrane
Paragraph plz
Answers
Answer:
This is the movement of molecules and ions from one medium to another,based on the concentration gradients, diffusion distant and area exposed. The plasma membrane is made up of phospholipid-bi-layer, to regulate what passes through.
However,because most of the molecules that diffuses across the membrane are small,non-polar, the bi -layer can not restrain their movements. O2, CO2 and lipids cross this barrier with ease by simple diffusion. However, polar molecules are restricted from passing through..
Explanation:
a) What effects would a drier-than average summer have on a pond
ecosystem?
(b) How is this different from the effects
resulting from draining the pond?
Answers
Answer:would cause the pond to be a little more empty because of evaporation and the lack of replacement
Explanation:
Why do they conduct autopsies when someone is murdered •to understand the cause of death •to understand the circumstances of death •to understand the toxicology of the the body •to use as evidence in a trial
Answers
Answer:
Explanation:
An autopsy is a routine procedure, usually conducted to determine a person's cause of death. Toxicology tests are usually ordered when someone is the victim of a crime, dies unexpectedly or dies for no obvious reason. The purpose of those is to determine if the deceased was under the influence.
to understand the cause of death
Explore the evidence supporting commonly held beliefs about proteins. 1. Gluten is toxic for everyone and should be avoided — no amount of gluten in the diet is considered safe. 2. Athletes and people who are very physically active need to eat a lot more protein than the average person. 3. Most Americans don't get enough protein in their diet
Answers
Answer:
Support the answer with the third point but mention not too take too much or they'd die.
Explanation:
Proteins are essential for the main physiological processes of life and perform functions in every system of the human body.
A protein’s shape determines its function.
Proteins are composed of amino acid subunits that form polypeptide chains.
Enzymes catalyze biochemical reactions by speeding up chemical reactions, and can either break down their substrate or build larger molecules from their substrate.
The shape of an enzyme’s active site matches the shape of the substrate.
Compare the mass of the two objects.
Which statement accurately describes the mass of the watermelon?
The mass of the watermelon is less than 2 kg.
The mass of the watermelon is equal to 2 kg.
The mass of the watermelon is greater than 2 kg.
Answers
Answer:
greater than
Explanation:
the mass of an object is basically how big the watermelon is. usually, watermelons weigh more than 9 kg. imagine going to walmart and picking up a watermelon. at first glance, its purty huge. of course the the mass of an object, the more the weight of said object. since watermelons are pretty big, the overall mass is going to be big as well.
The mass of object is greater than other watermelon.
What is mass of Object?The mass of an object is basically how big the watermelon is. usually, watermelons weigh more than 9 kg. imagine going to walmart and picking up a watermelon.
At first glance, its purty huge. of course the the mass of an object, the more the weight of said object. since watermelons are pretty big, the overall mass is going to be big as well.
Although weight and mass may appear to be the same thing, they are actually completely different quantities. The total quantity of substance, or "stuff," in an item is its mass. Gravitational pull is what gives a thing weight.
Therefore, The mass of object is greater than other watermelon.
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what will happen when tendons is removed
Answers
Answer:
Tendon release, also known as tenotomy, is a surgical procedure that involves cutting through or disconnecting a tendon to allow for a greater range of movement.
The procedure is used to relieve tight or shortened muscles. In some cases, the tendon is re-routed to maintain muscle function.
This procedure is usually reserved for conditions that don’t respond well to conservative nonsurgical treatments. Tendon release surgery is ideal for infants with clubfoot, or for older patients who develop tightened or shortened muscles due to cerebral palsy or other neuromuscular disorders.
Can someone help me with this :)
Answers
Answer:
mutualism
Explanation:
they both benefit from each other or both mutually help each other
Transcription of the developmental gene M is influenced by two different proteins: B and H. Studies of single and double mutants generated the following information:
In mutants lacking B, transcription of M does occur
In mutants lacking H, transcription of M does not occur.
In double mutants lacking B and H, transcription of M does occur.
Based on this information, put these genes in order in a developmental pathway. Use arrows and t-bars between the genes as appropriate. Choose the correct identity of each below.
Gene 1 1st Symbol Gene 2 2nd Symbol Outcome
Answers
Answer:
B --I H >> M transcribed
Explanation:
Reverse genetics is a classical approach used in molecular genetics to elucidate gene function in a signaling gene network. This technique consists of producing loss of function mutations in genes of interest in order to analyze their phenotypic effects in the downstream signaling pathway.
In this case, the mutation in B didn't affect the expression of the developmental gene M, together with the other mutant lines, this experiment indicates that B is a downstream suppressor of H (since further experiments show that B plays a role in the signaling pathway). Moreover, the mutation in the gene H affects the expression of M, thereby showing that H acts as a downstream activator of M. Finally, B-H double mutants did neither affect the expression of M, thereby showing that M transcription is dependent of the interaction between B and H.
Knowing that proteins B and H interact with each other, and they influence the expression of the M gene, we can propose the following developmental pathway B gene --| H gene >> M gene
------------------------------
Gene pathways refer to the regulation of genes expression by turning them on and off. Many genes and proteins might be involved in this process, each of them playing significant roles in the signaling pathway.
Available data:
The transcription of gene M depends on proteins H and BIf protein B is lacking, gene M is transcriptedIf protein H is lackin, gene M is not transcriptedIf B and H are lackin, gene M is transcriptedAccording to this information, we can assume that,
The mutation in protein B did not influence the transcription of the gene M because even when B is lacking, the gene is transcripted anyway.
However, we can see that H affected M transcription. The mutation in the H protein influenced the gene transcription.
Mutations in proteins H and B did not influence the transcription of the M gene because, in the absence of both proteins, the gene was expressed.
Probably proteins B and H interact with each other, and this interaction influences the M gene transcription.
The developmental pathway is then as follows,
B gene --| H gene >> M gene
------------------------------------
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Which are ways that many countries transport surface waters
Answers
Answer: Most of the surface water is transported from one place to another in two ways in general. One way being the pipelines, and the other being the conventional transportation vehicles.
Explanation: pipelines or vehicles
When hydrogen ions are decreased, is the pH higher or
lower?
wi
and for
Answers
Answer:
The overall concentration of hydrogen ions is inversely related to its pH and can be measured on the pH scale . Therefore, the more hydrogen ions present, the lower the pH; conversely, the fewer hydrogen ions, the higher the pH.
Which answer below correctly identifies the type of change and the explanation for the separation of the iron with sulfur? physical change because even though a color change occured, each solid maintained its original properties, which could be seen as soon as the magnet was applied physical change because no temperature change was observed, which would be an indicator of chemical change chemical change because a color change was observed, which indicated that a new substance was formed chemical change because the results depended on the interaction of two substances
Answers
Answer:
[tex]\boxed{\mathrm{view \: explanation}}[/tex]
Explanation:
Physical change because even though a color change occured, each solid maintained its original properties, which could be seen as soon as the magnet was applied.
Speration of iron with sulfur will not change the properties of the metals, the magnet can be used to check. The color overall changes.
A physical change where each solid maintained its original properties when the magnet was applied is an explanation for the separation of the iron with sulfur. Therefore, the correct statement is option A.
What is physical change?The separation of iron from sulfur is an example of physical change. A physical change is a change in the physical state without the change in its chemical composition. The iron and sulfur can be physically mixed together and are both solids.
When a magnet is applied, the iron is attracted towards magnet, thereby, separating itself from the sulfur which is also a physical change, as it only causes a change in the appearance not in the chemical composition.
However, chemical changes are due to a change in the chemical composition of a substance that results in the formation of a new substance.
Therefore, physical change is an explanation for the separation of the iron with sulfur.
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Q.17 Which of the following cell types would you expect to be abundant with endoplasmic
reticulum and Golgi bodies?
I. Plasma B cells (produce antibodies)
II. Adipose cells (store fats)
III. Islet of Langerhans cells (secrete insulin)
IV. Red blood cells (transport oxygen)
A) I and II only
C) I and III only
B) III and IV only
D) II and III only
Answers
Answer: D.
The E. reticulum and Golgi bodies are concerned with secretion and synthesis of molecular substances e.g protein , lipids and steroid. Therefore these cellular organelles should contain Plasma B cells and Islets of Langerhans. for protein hormone synthesis(insulin) and antibodies production
Explanation:
The governments of many countries have regulations that are designed to prevent the accidental introduction of non-native insects in to their countries this is because in these new habitants the non-addictive
Answers
Answer:
These regulations are aimed at protecting natural resources of the harmful effects of invasive species.
Explanation:
The introduction of invasive species such as, for example, insects, plants, mammals, etc., may have devastating effects on a particular area since they have shown to have the potential to disturb the homeostasis of an ecosystem. These invasions may even limit the available resources for higher trophic levels, thereby producing significant ecological impacts. Moreover, invasive insect species can also lead to important economic damages by destroying economically important plants and crops.
When blood glucose levels rise above the normal range, the pancreas secretes ________, but when blood glucose levels fall below the normal range, the pancreas secretes ________. a.insulin; glucagon b.epinephrine; glucagon c.glucagon; insulin d.epinephrine; insulin e.glucagon; glycogen
Answers
glucose level decrease, glucagon is secreted
Which of these is an autosomal recessive disorder?
Answers
Answer:
what are the options?
Explanation:
Examples of autosomal recessive disorders are :
Cystic fibrosis
Sickle cell anemia
Tay Sachs disease
Answer:
Huntington’s disease
Explanation:
It was the answer between
A. Huntington’s Disease
B. Cystic fibrosis
C. Muscular Dystrophy
D. Sickle-cell anemia
Please help me please
Use Figure 1 Tay-Sachs Disease Pedigree to answer the following questions.
a.Interpret what the Roman numerals in the pedigree diagram represent.
b.Interpret the genotypes of the parents in this diagram.
c.If a person who does not carry the Tay-Sachs disease gene marries offspring II4, what are the possible genotypes for their children?
Answers
Answer:
Please see the answer below
Explanation:
a. The roman numerals represent the various generations in the pedigree.
I represents first generation
II represents the second generation
b. The half shaded square and circle representing the parents means that both of them are carriers for the trait in question. Tay-Sachs disease is an autosomal recessive inheritance, assuming the trait is represented by the allele a, the gentoypes of the parents would be Aa and Aa respectively.
c. Still on the assumption that the disease is represented by the allele a. If offpsring II4 which happens to be free of the Tay-Sachs allele marries a person that also does not carry the Tay-Sachs disease gene, the cross will be as shown below.
AA x AA = AA, AA, AA, and AA.
All the children would be free from the Tay-Sach's allele. That is, they will be homozygous normal.
The roman numerals in the pedigree diagram represent are :
I = represents first generation
II = represents the second generation
Part B:The genotypes of the parents would be Aa and Aa .
Half-shadowed squares and circles that represent the parent mean that both are carriers of the characteristics of the problem. TaySachs disease is autosomal recessive when the trait is represented by the allele a.Part C:The possible genotypes for their children are:AA x AA = AA, AA, AA, and AA.
All the children would be free from the Tay-Sach's allele.Find more information :
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Explain why hormones are able to travel through the body but only affect certain cells.
Answers
Answer:
Hormones are able to travel the body but only affect certain cells because only those target cells have receptors for that particular hormone. Some hormones bind to receptors on the surface of target cells. Others enter the cells and bind to receptors in the cytoplasm or nucleus.
Plants use sunlight to convert nutrients into energy.what form of energy transfer is taking place?
Answers
Answer:
The RADIANT energy of the Sun is converted into CHEMICAL energy by the plants.
Explanation:
The RADIANT energy of then sun is converted into chemical energy by the plants.
Since plants use the solar energy captured by the chlorophyll and converts that solar energy into chemical energy (nutrients).
________1. The part of a photosystem that absorb light energy is its:
A. Thylakoid lumen C. Reaction center
B. Pigment –building protein D. Antenna complexes
Answers
Answer:
A. thylakoid lumen
Explanation:
option A is correct answer
3. Which of these organs is directly involved in
synthesis of red blood cells in an adult?
A. Liver
B. Spleen
C. Bone marrow
D. Lymph nodes
Answers
*Explanation*: In the human adult, the bone marrow produces all of the red blood cells, 60–70 percent of the white cells (i.e., the granulocytes), and all of the platelets.
Why the answer not A,B&D:
The lymphatic tissues, particularly the thymus, the spleen, and the lymph nodes, produce the lymphocytes (comprising 20–30 percent of the white cells). The reticuloendothelial tissues of the spleen, liver, lymph nodes, and other organs produce the monocytes (4–8 percent of the white cells). The platelets, which are small cellular fragments rather than complete cells, are formed from bits of the cytoplasm of the giant cells (megakaryocytes) of the bone marrow.
If the surface soil is saturated and precipitation increases, there will be
a. a decrease in the amount of groundwater
b. an increase in the rate of capillarity
c. a decrease in the surface elevation of the lake
d. an increase in the amount of runoff
Answers
Which system cooperates most closely with the endocrine system?
Answers
Answer:
The nervous system
Explanation:
The brain continuously sends instructions to the endocrine system and in return receives feed back from the endocrine glands. Because of thos intimate relationship, the nervous and endocrine systems are referred to as the neuro endocrine system
How many cells does meiosis produce
Answers
Answer: Four daughter cells
Two example of exothermic reaction in our daily life
Answers
Answer:
a burning candle
Iron rusting are both examples of exothermic reactions in our life
Explanation:
Answer:
lighting a candle
Ice Cubes. (When water freezes into ice cubes, the energy is released in the form of heat)
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The introduction of plastics in to the marine environment has also contributed to what other damages to planetary boundaries. Mark all that
apply
a. Biodiversity loss due to marine animals which are killed through entagling in or consuming plastic waste which reaches the ocean.
b. Biomagnification of mercury pollution in to the food chain through microplastics which absorb the mercury and are then
consumed.
c. An increase in ocean acidification through plastics leeching low pH contaminants in to the water.
d. An increase in carbon dioxide emissions which contribute to climate change through the use of fossil fuels in producing and
shipping plastic products.
Answers
Answer:
Option-A,B and D
Explanation:
Plastic pollution is one of the major threat to the ecosystem on Earth. The increased amount of plastic in the ocean has affected the aquatic ecosystem as it is the cause of the increased number of aquatic animals.
The animals consume the floating plastic of the ocean or get entangled in plastic waste.
The consumed plastic waste becomes a threat to these individuals. The microplastic consumed by the fishes, crabs can disrupt the food chain as it can cause biomagnification.
The plastic products production and transport to various parts of the world also cause harm as these activities involve the use of fossil fuels which leads to an increase in the concentration of carbon dioxide.
Thus, the selected options are correct.
In each of the scenarios, an individual heterozygous for the indicated gene or genes is crossed with an identical heterozygous individual. Predict the number of different phenotypes that would be observed among the progeny of such a cross.
Scenario 1: R is completely dominant to r.
Scenario 2: R is incompletely dominant to r.
Scenario 3: R and s are completely dominant to rand s, respectively: R and S are linked by 10 m.u. and don't interact with each other.
Scenario 4: Genes R and S perform the same finction: R and S are completely dominant to r and s, respectivley' and R and S are unliked.
Scenario 5: R and S are completely dominant to r and s, respectively; R and S are unlinked show dominant epistasis.
Answers
Most rain Falls where on earth
Answers
Answer:
areas near the equator
Explanation:
because they receive sunlight thorought the year by which there is much evaporation where by water vapour condenses and much rain falls
Ethology is the study of how animals behave towards each other and in response to
their environment.
True
False
Answers
Answer:
True ig.
Explanation:
the science of animal behavior.
the study of human behavior and social organization from a biological perspective.
A 10 kg bowling ball is lifted from the ground to a height of 1 meter. Assuming the bowling alley is on Earth, which type of potential energy is stored in a ball and why?
Answers
Answer:
961.052
Explanation:
Mass x gravity x height
Can someone help me please !!
Answers
Answer:
yeah OK I will be there
