Mary determined that 5 pollen grains could fit along the diameter of the field of view of her microscope. If each pollen grain has a diameter of 0.3mm what is the diameter in millimeters of the field of view of Mary's microscope
1.5mm
15mm
4.7mm
5.3mm
Answer:
1.5mm
Explanation:
According to this question, Mary is trying to view 5 pollen grains under her microscope. She found out that the 5 pollen grains each with a diameter of 0.3mm could fit along the diameter of the field of view of her microscope.
This means that the diameter of the field of view of Mary's microscope can be calculated as follows:
Diameter of each pollen × no. of pollen that fit in
= 0.3mm × 5
= 1.5mm
Hence, the diameter of the field of view of Mary's microscope is 1.5mm.
Which hormone can be found in many fruits and can become airborne and cause over-ripening and abscission
Answer:
Ethylene is a plant hormone that is released in the form of gas. It stimulates plant cells degradation making the fruits softer and sweeter. As a result, high ethylene levels may cause fruits over-ripening and abscission.
Explanation:
Name the landscape region that contains the youngest rock material.
Which type of white blood cell is activated by antigens that are bound to antibodies?
monocytes
eosinophils
basophils
neutrophils
Answer:
basophils
Explanation:
Basophils are a class of white blood cells known as granulocyte, which also include neutrophils, eosinophils, and mast cells. These cells (basophils) are generated in the bone marrow as other white blood cells. When stimulated, basophils degranulate to release histamine, proteoglycans, and proteolytic enzymes and thus mediate immune responses. This process of degranulation occurs when a specific antigen binds to the IgE receptor on the basophil. Moreover, basophils may also be activated by inflammatory mediators (e.g., complement factors such as C5a and C3a, chemokines, etc).
In a microarray analysis used to compare sporulating and nonsporulating yeast, a spot that appears yellow at a given time point is associated with a gene that is _______. View Available Hint(s) In a microarray analysis used to compare sporulating and nonsporulating yeast, a spot that appears yellow at a given time point is associated with a gene that is _______. is expressed roughly equally in both sporulating and nonsporulating yeast likely to play a role in the process of sporulation expressed in neither the sporulating nor the nonsporulating yeast present in sporulating, but not in nonsporulating yeast
Answer:
is expressed roughly equally in both sporulating and nonsporulating yeast
Explanation:
A DNA microarray (also called DNA chip) is a microchip-based testing platform which can be used to analyze and compare gene expression profiles between samples. A DNA microarray contains microscopic DNA spots attached to a solid surface, where each spot corresponds to thousands of copies of a specific DNA sequence (i.e., probes). Subsequently, cDNA 'target' molecules obtained by reverse transcription from RNA are then hybridized to a microarray. This process of hybridization can be quantified by using fluorophore-labeled targets that determine the level of the expressed gene (transcript) in the target sample. In a DNA microarray, the intensity and types of color in each spot indicate the presence and level of each specific transcribed gene in the samples. In consequence, the presence of yellow spots in the DNA microarray indicates approximately equal expression levels of the corresponding gene in both yeast samples.
A sperm fertilized an egg. Which two structures will the fertilized egg contact?
ovary and fallopian tubes
fallopian tubes and uterus
uterus and cervix
cervix and ovary
Answer:
B Edge 2021
Explanation:
I just took the test
When a sperm fertilizes an egg, the fertilized egg, also known as a zygote, will travel from the fallopian tube to the uterus, where it will implant and grow into a fetus. Therefore, the correct option is B.
What is a fertilized egg?A fertilized egg is also known as a zygote. It is a single cell that results from the union of a sperm and an egg during fertilization. Fertilization typically occurs in the fallopian tube of a female reproductive system when a sperm successfully penetrates and merges with the egg.
The egg is released from the ovary and travels through the fallopian tubes towards the uterus. It is in the fallopian tubes where the egg can be fertilized by a sperm, forming a zygote.
The zygote will then continue to travel through the fallopian tube towards the uterus. As it approaches the uterus, the zygote will undergo several cell divisions, forming a ball of cells known as a blastocyst.
The blastocyst will then implant into the lining of the uterus, where it will continue to grow and develop into a fetus. The cervix, which is the lower part of the uterus, plays a role in pregnancy by keeping the fetus inside the uterus during gestation and then opening to allow for delivery during childbirth.
Therefore, option B) the fallopian tubes and uterus is correct.
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Distinguish between acute and chronic diseases.(Class 9 Ncert Answer Pls)
Answer:
Acute diseases refer to the medical condition that occurs suddenly and lasts for a shorter period of time. Chronic diseases develop slowly in our body and may last for a lifetime. Chronic diseases are sometimes fatal.
Answer:
Well, here is your answer...
Explanation:
I am really sorry because I have to search other website for answering this question because I am not in the same grade which you are in... SORRY DEAR !!!
Ajudem-me por favor qual é o intruso nesta 4 alíneas de profissões:
a) cantiga
b) cantor
c) cantadeira
d) cantão
Answer: it is b
Explanation:I DID THIS TEST
Which type of micro-organism makes its own food, like plants do?
a - algae
b - protozoa
c - bacteria
d - yeast
Answer:
algae. I just looked it up. algae are autotrophs meaning they make their own food. I hope this helps!
Answer:
algae is your answer
Explanation:
hope help yiu
Select the correct statement about equilibrium.
a) the weight of the endolymph contained within the semicircular canals agains the maculae is responsible for static equilibrium.
b) due to dynamic equilibrium, movement can be perceived if rotation of the body continues at a constant rate
c) cristae respond to angular acceleration and deceleration.
d) hair cells of both types of equilibrium hyper polarize only, resulting in an increased rate of impulse transmission.
Answer:
cc) cristae respond to angular acceleration and deceleration.
Explanation:
The vestibular system is the sensory apparatus of the inner ear that acts to maintain body equilibrium, as well as to coordinate the position of the head and eye movement. The vestibular system consists of five distinct sensory organs: three semicircular canals (i.e., anterior, posterior, and lateral) which are involved in dynamic equilibrium; and the two otoliths (i.e., utricle and saccule), involved in static equilibrium. The crista ampullary (plural: cristae) is the sensory organ located in the semicircular canals of the inner ear of vertebrates, which act to detect angular acceleration and deceleration. The cristae of the semicircular canals respond to the rotational movement and are responsible for dynamic equilibrium.
Amoeba Sisters Video Recap of Meiosis: The Great Divide
answers
Answer: I have no idea
Explanation: This question does not have enough information for me to answer it.
What happens if the products of digestion of proteins in a boiled egg are more than what the body needs ?
Answer:
sry I don't know but need more points
Explanation:
I surely answer yr next question
To control the population of insects, if insecticides are used then how it will affect the population of birds?
Answer: Birds are exposed to insecticides through ingestion by mistaking, they ingest pesticide residues when they trim their feathers with their beaks or may drink or bathe in contaminated water. The effects can range from death due to poisoning to a variety of effects such as weakening of eggshells, deformation and slow growth of chicks, lack of appetite, weight loss, immune system damage, hormonal disruption. In addition, insect-eating birds are at a loss when insecticides cause a drop in the number of insects available, especially when they have chicks to feed.
Explanation:
Insects are a class of invertebrate animals characterized by having one pair of antennae, three pairs of legs and two pairs of wings (which, however, may be reduced or missing). They comprise the most diverse group of animals on Earth with an estimated thirty million undescribed species, potentially representing more than 90% of the life forms on the planet. Moreover, they can be found in almost every environment on the planet, so they are not only highly diverse, but also incredibly abundant.
Like any species on the planet, insects play a vital role in the ecosystem, so that a change in the population can compromise the survival of everything around them. On the other hand, insects called "pests" are those insects observed in systems and whose populations cause damage to crops. Although both beneficial insects and pest insects are part of any ecosystem and are also present in human-managed systems. Humans combat these pests using insecticides, which are chemical compounds used to kill insects. They are usually very specific since the product only affects the organism it damages, leaving the rest of living beings and the environment unharmed. And they have low toxicity to humans and animals.
The most common way in which birds are exposed to insecticides is through ingestion by mistaking, for example, a pesticide granule for a seed, or indirectly, by consuming contaminated prey (insects). Birds may also ingest pesticide residues when they trim their feathers with their beaks or may drink or bathe in contaminated water. It should be noted that it also depends on the toxicity of the chemicals, the magnitude and duration of exposure. The effects can range from death due to poisoning to a variety of effects such as weakening of eggshells, deformation and slow growth of chicks, lack of appetite, weight loss, immune system damage, hormonal disruption. In addition, insect-eating birds are at a loss when insecticides cause a drop in the number of insects available, especially when they have chicks to feed.
•Science
analysis of disease resulting from nutrient deficiency
Hello user,
The answer is Protein Energy Malnutrition ( PEM )
hope it helps you ...
How did Mendel control which plants were
being pollinated?
A. He used artificial cross-pollination,
B. He only used female plants in his experiments,
C. He allowed any plant to be pollinated,
Answer:
Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination. He removed the anthers from the flowers of some of the plants in his experiments. Then he pollinated them by hand with pollen from other parent plants of his choice.
Mendel controlled which plants were being pollinated by using artificial cross-pollination. Details about Mendel experiment can be found below.
How did Gregor Mendel control pollination?Gregor Mendel is referred to as the Father or Genetics because of his immense role in inheritance.
Gregor Mendel performed series of experiment using pea plants where he crossed them to observe the inheritance of several traits.
However, Gregor Mendel was able to control the process of self-pollination among the pea plants he used by employing artificial cross pollination.
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which of these is a cash crop
A. cucumbers
b. grass
c. latex
d. strawberries
Answer:
The answer is Cccc Latex
the answer is bbbbb grass
3. Which term describes the offspring of a
first-generation cross between parents with
different forms of a trait? sc.7.L.16.1
Answer:
the passed on from to offspring
what is a photon. A. part of a ribosome B. A light particle C. A carbon dioxide molecule D. Part of a chloroplast
What might happen to the genes that break down carbohydrates when cats eat lipids and fats, but no carbohydrates?
Answer:
Goes into resting position.
Explanation:
The genes become dormant or in resting position that break down carbohydrates when cats eat lipids and fats, but no carbohydrates because of no use of that genes. The genes can't give instructions to the hormones that produces enzymes which take part in the digestion of carbohydrates so due to no need for the genes of carbohydrates, the genes goes into resting position until carbohydrate is eaten by the cat.
Carry out a tri-hybrid cross between XX(tall) YY(fat) ZZ(fair) and xx(short) yy(slim) zz(black). Find their genotypic and phenotypic ratios.
Answer:
Genotypic ratio = 100% XxYyZz
Phenotypic ratio = 100% tall, fat, fair.
Explanation:
For a trihybrid cross involving the genes XX which codes for tallness, YY which codes for fatness, and ZZ which codes for fairness with their alternate forms being xx, yy, and zz respectively; each gene will segregate into their respective alleles and combine to form gametes during meiosis, such that:
XXYYZZ ----> XYZ, XYZ, XYZ, XYZ, XYZ, XYZ, XYZ, XYZ
xxyyzz -----> xyz, xyz, xyz, xyz, xyz, xyz, xyz, xyz
These gametes then combine randomly during fertilization to give all XxYyZz offspring.
XYZ x xyz
XxYyZz
Since X is dominant over x, Y is dominant over y, and Z is dominant over z, then XxYyZz individuals that are produced from the cross would be tall, fat, and fair. Hence
Genotypic ratio = 100% XxYyZz
Phenotypic ratio = 100% tall, fat, fair.
See the attached image from the Punnet's square analysis.
Question 3 (Multiple Choice Worth 2 points)
(01.03 MC)
Why is it difficult to get people to follow regulations protecting a common?
O People care more about money than the welfare of others.
O Breaking these regulations does not come with direct penalties.
The rules are too strict and prevent meeting basic needs.
O Common area resources belong to everyone.
I'm sorry for being too late but the answer is, Breaking these regulations does not come with direct penalties.
VR of wheel and axle is 5.what does it mean. plz help me this question I will Mark u as brainliest
Explanation:
VR is 5 means that the load moved is five times the effort applied and the distance moved by the effort is five times the distance moved by the load at the same time interval.
I hope it helps you
Answer:
The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle
Which is a diagram that shows the flow of energy among different trophic levels? O A. Energy pyramid O B. Food chain O C. Solar energy O D. Food web
Answer:
A
Explanation:
an energy pyramid shows the flow of energy in the different trophic levels.
hope this helps please like and mark as brainliest
Which two phrases describe the nature of the gravitational force?
Answer:
a force that pulls objects toward each other
Answer:
B
Explanation:
Question 16 of 30
John is testing the effect of temperature on the solubility of sugar in water.
He plans to determine the mass of sugar dissolved in a saturated solution.
He will begin with a known mass of sugar and add sugar to water until the
solution is saturated. He will then calculate how much sugar dissolved by
subtracting the remaining mass from the initial mass.
He organized data about his experiment in the following table:
Group A
Group B
Group C
Volume of water
100 mL
Temperature
25°C
1000 g
Initial mass of
sugar
800 g
Final mass of
sugar
Which factor should be the same in all three groups?
Answer:
As John is testing the effect of temperature on the solubility of sugar in water. To test this, he will measure the amount of sugar dissolved at different temperature level.Explanation:
I hope it's helpful for you ☺️The volume of water should be the same in all three groups.
What is solubility?Solubility is the property of a substance to dissolve in a solvent to form a homogeneous solution at a particular temperature and pressure.The volume of water should be the same in all three groups. This is because the experiment is testing the effect of temperature on the solubility of sugar in water, and any variation in the volume of water could affect the results.
By keeping the volume of water constant, John can ensure that any changes in the amount of sugar dissolved are solely due to changes in temperature and not changes in the amount of water. Therefore, he can compare the results of each group and draw conclusions about the effect of temperature on the solubility of sugar.
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Which of the following is a scientific observation about the panther pictured
below?
Florida Panther
O A. The panther is enjoying the warmth of the sun.
B. The fur on the panther's head is darker than the fur on its body.
C. The panther's coloring is for camouflage.
O D. The panther is an important American symbol.
Answer:
D, The panther is an important American symbol
pls mark me
Answer:
d
Explanation:
Refer to Animation: Filtration, Reabsorption, Secretion. Cells of the excretory tubule _________water by osmosis, from which we can conclude that the solute concentration in these cells must be _________ than in the filtrate. reabsorb; lower excrete; higher reabsorb; higher excrete; lower 2. Refer to Animation: Filtration, Reabsorption, Secretion. What drives the reabsorption that occurs in animal excretory systems
Answer:
Reabsorption, Higher
Explanation:
What drives the reabsorption to take place in the executory system is the presence of slow diffusion of some substances and active transport for others. Filtration removes the water form the blood and other substances get dissolved into blood.Which of the following tissues is used in the formation of flowering plant organs?
1. Connective tissues
2. Vascular tissues
3. Epithelial tissues
4. Nervous tissues
Vascular tissues are the ones used in the formation of flowering plant organs. The correct option is 2.
What are vascular tissues?Vascular tissue is a complicated conducting tissue found in vascular plants that is made up of multiple cell types.
The xylem and phloem are the primary components of vascular tissue. Internally, these two tissues transport fluid and nutrients.
These tissues also help in the formation of flowering plants.
Thus, the correct option is 2.
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All of the following are evidence for the big bang except: A. Cosmic background radiation B. Almost all galaxies are red-shifted C. The sound from the bang echoes though the universe D. The universe is expanding
Answer: C. The sound from the bang echoes though the universe
Explanation:
Cosmic background radiation proves the big bang because it shows that as a result of the big bang, the early universe was really hot but cooled as it expanded. Cosmic background radiation is the result of that earlier heat.
Galaxies being red-shifted means that the space between galaxies is increasing which means that the universe is expanding which provides evidence for a big bang because particles move away the single point they are concentrated in.
There was no actual bang from the big bang and sound cannot echo through space so c is incorrect.
learn and observe air resistance by throwing objects from considerable height a; tissue paper b: plastic spoon c: stainless steel spoon take a record of your findings and observations and jot them down.
Answer:
Speed: Tissue fell slowest(lowest mass and large surface area acts as parachute)
Plastic spoon fell pretty quick
And the stainless steel spoon fell the fastest because of the weight and small mass
The tissue is the only item out of the 3 that makes 0 noise when it hits a surface.
