Answer:
Morula (cleavage stage) >> blastoderm (blastula surrounded by the blastocoel)
Explanation:
The morula is an early-stage embryo stage (3 to 4 days after fertilization). During this stage, the embryo is composed of a globular solid mass of 16 to 32 cells (i.e., blastomeres) that are formed by cleavage of the zygote. The morula stage precedes the blastocyst stage (4 to 5 days after fertilization), a distinctive stage of a mammalian embryo with over 100 cells. In the rest of the animals, it is referred to as a blastula. A blastoderm is a post-cleavage embryo consisting of a solid layer of epithelial tissue that makes up the blastula, which surrounds a fluid-filled cavity called the blastocoel.
After buying a new house by the lake, a family wanted a better view of the water so they could watch the sailboats. They hired a company to cut down the small trees and shrubs that were blocking the view.
Which type of water pollution is most likely
1 . Nutrient
2.sediment
3.toxic
4. Bacterial
The water pollution that is most likely to occur is Nutrient pollution
Pollution can be defined as the addition of materials or energy (pollutants) to the environment that damages it, making it undesirable or unfit for life. There are different types of pollution which includes:
--> Air pollution
--> Radiation pollution
--> soil pollution and
--> water pollution.
WATER POLLUTION is defined as the type of pollution that occurs when pollutants are being released into water bodies such as streams, lakes, ocean, beaches making it unsafe to use for both human and aquatic life activities. Depending on the type of pollutants, there are also different types of water pollution, these include:
chemical pollution Groundwater pollutionsediment pollutionmicrobiological pollutionnutrient pollutionsurface water pollution and Oxygen-depletion pollution.NUTRIENT pollution occurs when there is EXCESS of it in the water bodies through organic fertilizer or compost manure from the leaves of the cut down trees and shrubs. When nitrates from the agricultural waste gets into the water body(lake) it can cause a drastic increase in aquatic plant growth, especially algal growth. This excessive growth can lead to a decrease in oxygen level of water they by affecting the aquatic life of the lake.
Therefore the CORRECT OPTION is A Nutrient pollution.
Option B is wrong because sediment pollution is a type that involves loose sand, clay, silt, and other soil particles that are carried from a site by runoff water not from cut down trees.
Option C is wrong because toxic or chemical pollution is caused by chemicals from industrial wastes.
Option D is wrong because it is caused by natural existing bacteria in the water bodies and are capable of causing disease when ingested. Example Vibro cholera bacteria.
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discuss the reaction in tricarboxylic acid cycle
The tricarboxylic acid cycle also known as the Kreb's cycle consists of eight cycle wherein a molecule of acetylCoA is used to produce three NADH, one FADH2 and one GTP/ATP molecule.
What is the tricarboxylic acid cycle?The tricarboxylic acid cycle is a sequence of reactions in which acetylCoA molecules from the glycolytic pathway are used to produce the reducing equivalents NADH ad FADH2 which are used to produce ATP in the electron transport chain.
The tricarboxylic acid cycle also known as the Kreb's cycle consists of eight cycle wherein a molecule of acetylCoA is used to produce three NADH, one FADH2 and one GTP molecule.
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Explain how a bottleneck event can enrich recessive traits in the genetics of a population.
Answer
A bottleneck event severely reduces the fraction of a species able to pass on their genes to offspring. Any once rare recessive traits present in the surviving breeding population are passed to a larger fraction of the total population of offspring, thereby enriching those recessive traits in the total gene pool .
Bottleneck events can limit variation if the dominant allele population gets wiped out for any reason and the recessive allele can appear to be in the majority however this does not shows the actual makeup of the population.
What is bottle neck effect?The bottleneck effect is defined as a reduction and subsequent increase in a population's size affects the distribution of genetic variation among its individuals.
Examples of bottle neck effect is when the northern elephant seals have reduced genetic variation likely because of a population bottleneck humans imposed on them in the 1890s. Hunting reduced their population size to as few as 20 individuals at the end of the 19th century.
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GOLGI APPARATUS IS THE IMPORTANT SITE OF FORMATION OF____________& ______________
GOLGI APPARATUS IS THE IMPORTANT SITE OF FORMATION OF GLYCOPROTEINS & GLYCOLIPIDS.
6 points about carnivorous
Answer:
a carnivorous is a plaant and animal that eats the flesh of animal.
Transfusion of type AB blood would introduce both A and B ______________ which would be ______________ monosaccharides type
Answer: hello your question is poorly written below is the question
answer:
Tetrasaccharides, Recognized, Triggers, Type B, Type A, Type O, Not recognize, TetrasaccharidesExplanation:
Both A and B Tetrasaccharides which would be Recognized as foreign and Triggers an immune reaction in recipients lacking either the A saccharide Type B or B Type A or both Type O . meanwhile the type AB blood would contain both A and B and would Not recognize those Tetrasaccharides as foreign
Direct counts of cells in liquid samples can be performed using a Petroff-Hausser counting chamber. Research this method and describe how it compares to the viable plate count method of determining the number of CFU in a sample.
The viable plate count is the most commonly used method to estimate the number of viable cells in a sample; while the Petroff-Hausser counting chamber is a direct microscopic count method generally used for counting bacteria and sperm cells.
The Petroff-Hausser counter is a counting chamber used to count microorganisms and cells (e.g., bacteria and spermatic cells) under the microscope.
The Petroff-Hausser counter chamber is divided into 25 large squares which are in turn divided by double lines. Moreover, within each large square, there also are 16 small squares divided by single lines.
Petroff-Hausser counting chambers are often used to directly determine the number of bacteria in a culture or liquid medium. Petroff-Hausser counting chambers are used to count the number of cells in a given volume of culture liquid by observing 10 to 20 microscope fields.
The viable plate count, also known as simply plate count, is the most commonly used procedure to estimate the number of viable cells in a sample.
The viable plate count method consists in obtaining serial dilutions of a sample having viable microorganisms/cells which are plated onto a growth medium.
This method (viable plate count) can be used to determine the number of actively dividing cells.
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Please help me with this.
Answer:
D
Explanation:
Gene pool is the total genetic diversity within a population or species
Answer:
D
Explanation:
hope it helps.
BLEACH ANSWER THIS QUESTION!!!
ABOUT 70% of total Global carbon is found in
1) Ocean
2) Forest
3) Grasslands
4) Agroecosystems
Answer:
1) Ocean
Explanation:
HOPE IT HELPS YOUWhite Leaf Disease is a devastating disease that
affects sugar cane crops in Thailand and has become a
major issue for farmers. The disease starts with a white
line forming in the center of the sugar cane's leaves,
which can change in size and shape as it develops.The sugar cane's new leaves will become increasingly whiter, often having stunted growth, and resulting in the sugar cane being less productive than the non-
infected plants, Scientists are trying to determine
what organelle must be damaged to produce the
observed results,
White leaf disease is caused by phytoplasma. The disease infects the leaves and create white spots in them.
The farmers in Thailand are facing this issue with sugarcane crops. The organisms infect phloem tissues in sugar cane and cause the leaves to turn white.
The size and shape can change as sometimes there are fine white lines created while sometime there are white spots.
Scientists are trying to deal with such disease and an spray of liquid copper has been found beneficial to treat this disease. The white spot fungus stops to spread with the spray.
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the different between microspores and pollen grain
The key difference between microspore and pollen grain is that microspore is the small spore that develops into the male gametophyte in plants while pollen grain is the small grain that contains the male gametophyte.
hi, define chemistry and mention the three branches of chemistry answer it fast .Good night
Explanation:
Branches of inorganic chemistry include: ... Nuclear chemistry — the study of radioactive substances. Organometallic chemistry — the study of chemical compounds containing bonds between carbon and a metal. Solid-state chemistry — the study of the synthesis, structure, and properties of solid materials.
Answer:
The five primary branches of chemistry are physical chemistry, organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry.
Which of the following is a feature of beaches?
A. Berms
B. Runnels
C. All of these
D. Shingles
Answer:
C: All of these.
Explanation:
Because there is feature
Researchers note that a plant closes its stomata on a hot, dry, windy day. What statement describes the plant response to these
conditions?
A)
The stomatal closings and the environmental conditions are unrelated for this plant.
B)
The stomatal closings and the environmental conditions are unrelated for
this plant.
Water loss and water stress is highest on hot, dry, windy days, so the plant
closes stomata to conserve water.
Hot, dry, windy days are not conducive to pollen spread, so the plant closes
its stomata to prevent pollination.
Photosynthesis is decreased on hot, dry, windy days, so the plant closes its
stomata to prevent carbon dioxide diffusion.
a
D)
Answer:
It is B
Explanation:
i just took it
If a plant closes its stomata on a hot, dry, and windy day, the plant response to these conditions is water loss and water stress is highest on hot, dry, windy days. So, the plant closes its stomata to conserve water.
What do you mean by Stomata?Stomata are the tiny pores present on the surface of the leaves. A huge amount of gaseous exchange may take place in the leaves through these pores for the purpose of photosynthesis.
During photosynthesis, these stomatal pores take carbon dioxide and water is gradually lost, in order to prevent this water loss in hot and humid conditions, the plant closes its stomata.
Therefore, if a plant closes its stomata on a hot, dry, and windy day, the plant response to these conditions is water loss and water stress is highest on hot, dry, windy days. So, the plant closes its stomata to conserve water.
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As with most fluid samples sent for microbiological analysis, Mandy starts her investigation with a Gram stain.
Gram Stain Analysis Classify the infectious agent based on the Gram staining.
Hi. Unfortunately your question is incomplete and you have not shown any photos of the sample that Mandy must identify by Gram stain. However, after researching her question on the internet, I was able to find another question exactly like this one, which showed the microorganism that should be analyzed. This image is attached below. In that case, I hope the answer below can help you.
Answer:
Gram-positive cocci
Explanation:
It is possible to identify that the microorganism presented is a bacteria due to the application of the test known as Gram stain, which allows the identification of gram positive and gram negative bacteria. This test allows the bacteria to be subjected to a specific dye that reacts with the chemical composition of the bacteria, modifying its color. Gram positive bacteria show a blue color after the test, while gram negative bacteria show a red color after the test.
As we can see in the attached image, the bacteria that Mandy is analyzing shows a blue color, after being submitted to Gram stain, being then a gram positive bacteria.
We can also see that the colonies of this bacterium have formed round, similar to a coconut and for this reason, we can conclude that the bacterium has the shape known as cocci.
Therefore, we can classify the microorganism as a Gram-positive cocci.
What is gylcosylation
Glycosylation is the reaction in which a carbohydrate, i.e. a glycosyl donor, is attached to a hydroxyl or other functional group of another molecule in order to form a glycoconjugate. In biology, glycosylation usually refers to an enzyme-catalysed reaction, whereas glycation may refer to a non-enzymatic reaction.
packaging methods of watermelon
Answer:
The packing process consists of:
The workers remove the watermelons from the bulk cardboard bins and place them onto the packing line.
The watermelons pass through three different brush steps (without the use of any wash water)
The watermelons are labeled and packed into large cardboard bins once again.
Explanation:
OPEN ENDED QUESTION
Why should you NOT drink seawater even
in extreme survival situations? Please
use at least 3 vocabulary words from the
video.
Answer:
sea water has lot of salt which is dangerous to human health
Explanation:
i don't seem to see any video.i which I could answer your questions
what are three characteristics of life that archaea bacteria have?
Answer:
The common characteristics of Archaebacteria known to date are these:
(1) the presence of characteristic tRNAs and ribosomal RNAs.
(2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat.
(3) the occurrence of ether linked lipids built from phytanyl chains.
A geneticist finds that a strain of bacteria to produces a non-functional sigma factor. Which among the following steps in transcription would most likely be first affected?
A.Assembly of RNAP onto the DNA strand
B.Identification and binding of RNAP on to the promoter sequence
C.Conversion of open initiation complex to closed initiation complex
D.Synthesis of RNA after the formation of open initiation complex
Answer:
The correct answer is - B. Identification and binding of RNAP onto the promoter sequence.
Explanation:
Bacterial RNA polymerases have subunits known as Sigma factors responsible for the identification and specificity of promoter binding of RNAP and regulate the efficiency of RNA synthesis during transcription is initiated.
These bacteria producing the nonfunctional subunits of RNA polymerase or sigma factor will be unable to identify and tightly bind to promoter elements that are RNAP.
What is the correct order of amino acid if the sequence of bases on DNA were as follows: C-C-T-C-G-A-T-T-C-A-T-G
glycine, alanine, lysine, tyrosine
2)
alanine, proline, lysine, tyrosine
3)
valine, aspartate, glycine, proline
4)
aspartate, glycine, serine, valine
Answer:
it should be G-G-A-G-C-T-A-A-G-T-G-C
Explanation:
A=T
C=G
think of them as opposites. invert them and you'll have the answer (its easier if you write the answer right underneath)
The amino acid sequence should be G-G-A-G-C-T-A-A-G-T-G-C
G-G-A: glycine
G-C-T: alanine
A-A-G: lysine
T-G-C: tyrosine
What are amino acids?
Amino acids are molecules that combine to form proteins. Amino acids and proteins are the building blocks of life.
The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid. There are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases).
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Which of the following counteracts the movement of bicarbonate ions from the RBC?
A) chloride shifting
B) the Haldane effect
C) release of hydrogen ion
D) the Bohr effect
Answer:
A) chloride shifting
Explanation:
because in movement of bicarbonate ion, there. is exchange of carbonic acid and chloride ion in RBC which is called chloride shift.
Answer: A. chloride shifting
For humans, brown eyes (B) are dominant over blue eyes (b). If a heterozygous brown-eyed male had a child with a blue-eyed female, what percentage of the offspring (F1 generation) would have blue eyes?
Answer:
50%
Explanation:
When you use a monohybrid cross you will get Bb, Bb,bb,bb
Since the brown eyed are heterozygous.
is the citric acid cycle the same thing as fermentation
Answer:basically
Explanation:
What is the metric unit for mass?
Meters
Kilograms
Pounds
Matter
Answer:
Kilograms is the metric unit for mass.
pla mark me as Brainliest !
:DD have a nice day
Answer: the answer is kilo grams because people mesure the amount of mass with kilograms if you were to the amount of mass in a water bottle you would measure with kilo grams
hopefully this helps you out :) and please mark me brainiest.
PLEASE HELP ASAP PLEASE FAST
Answer:
D
Explanation:
the water passes through the semi permeable membrane
Determine if the following statement is true or false, and why: We use plants in many facets of our society; they are used for medicine, building, food, and clothing.
Answer:
False
Explanation:
It is true that flowers are use in many facets but in this question it is asked that wheather it is used for medicine, building, food and clothing. Yes some flowers are used to make medicine but we can't use flowers to make building and we eat some flower but flowers are not used in clothing only paper or silk flowers is used to make and it is man-made flower...
I hope this is helps you....
Plants are very useful and plays a boon for our society as they are used for medicinal purpose, building, food as well as clothing.
Thus, given statement is true.
What is the use of plants?Plants plays a vital role in our life as they are required for basic human purposes.
Medicinal use of plants:
Medicinal plants such as aloe vera, tulsi, neem, turmeric and ginger helps to cure common viral infectionsSeveral medicinal plants are used in medicines that cures cough, and other chronic diseasesPlants as source of food:
Spinach, cabbage, lettuce are the plants used for eating purpose.
Plants support rainfall and helps to bind the soil that prevent soil erosion.
Plants also protect us from air pollution.
Therefore,plants are very useful and plays a boon for our society as they are used for medicinal purpose, building, food as well as clothing.
Thus, given statement is true.
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Lainey is looking for a new apartment and her realtor keeps calling her with new listings. The calls only take a few minutes, but a few minutes here and there are really starting to add up. She's having trouble concentrating on her work. What should Lainey do? a) Tell her realtor she can only receive text messages O b) Limit the time spent on each call O c) Turn off her phone until she is on a break O di Call her realtor back when customers won't see her on the phone
Answer:
c) Turn off her phone until she is on a break
Explanation:
If she does option "a" then her phone will still keep ringing with text message alerts. Option " b" will still be consuming her work time and option "d" can't be because it'll be too late by then so only option c makes sense.
Suppose a researcher introduces a mutation into the glucosidase domain of the mammalian glycogen debranching enzyme. The mutation inhibits the activity of the glucosidase but does not affect the other functions of the enzyme. The researcher then introduces the mutated enzyme into mammalian cells that do not express wild type glycogen debranching enzyme. Predict the effect of the mutation on glycogen metabolism.
Answer:
cells will have glycogen molecules with branches of a single glucose residue
Explanation:
Glycogen debranching enzymes are proteins that catalyze the removal of branching from glycogen, which is a multibranched polysaccharide composed of glucose units and serves as a form of energy storage. These enzymes have two catalytic activities on a single polypeptide chain: glucosyltransferase and glucosidase activities, which are both required for glycogen breakdown. Glycogen degradation requires both glycogen phosphorylase and glycogen debranching enzymes. First, a glycogen phosphorylase acts to digest a glycogen branch down to four glucose residues. Subsequently, the debranching enzyme through its glucosyltransferase activity acts to transfer three glucose residues to a nearby branch of the glycogen chain. Finally, through its glucosidase activity, the debranching enzyme cleaves the remaining α-1,6 linkage in order to release free glucose.
1. Biochemical and differential tests can be incorporated into growth media or performed on isolated colonies after they have been cultured. Give three examples of a differential test that is incorporated into media and three examples that are applied after the colonies have been cultured.
Answer:
Biochemical and differential tests can be incorporated into growth. media or performed on isolated colonies after they have been cultured. ... Three examples of biochemical tests that are done on the colonies are catalase test, indole test, and urease test.
