Which atom of water takes an unfair share of electrons ?

Answer:

The life cycles of a mollusk and an insect are alike because the larvae both look like worms

Explanation:

because the larvae both look like worms

Explanation:

Answer:

Translocation

Explanation:

Biosynthesis of carbohydrates in green plants is called photosynthesis. This proces uses inorganic carbon (CO2), water and solar energy in a complex, multi-step process in mesophyll cells of leaves (sources).

Afterward,  plants optimize the reaction products for use or storage in other regions. Plants form sucrose, as an energy-efficient storage molecule for transportation and later storage.

These sugars move through the mesophyll via plasmodesmata;  here, they reach phloem sieve tube elements in vascular bundles. From the STEs, they  are actively transported against their concentration gradient  to the phloem.

When the sugars enter the phloem,  their high concentration cause water to move into the phloem from neighboring xylem vessel. This increases the water pressure inside the phloem, causing the sap to move towards sinks. Sinks may be actively growing regions or storage like the roots.  There, the sucrose is polymerized into starch for long term storage.

Answer:

The answer is B. eukaryotic cells.

Explanation:

The structure in question is a Nucleolus. Prokaryotic cells do not have a nucleus nor do they have a nucleolus.

Plant and animal cells both have a nucleolus, and they are both eukaryotic cells. The answer choice B is basically like a "answer choices A and C" answer, thus making the answer B.

The cell structure labeled X is found only in eukaryotic cells. The correct option is B.

The nucleus is the brain of the cell. It is present in the center of the cell. It controls all activity of the cell, and it contains the genetic material of the cell.

A cell is composed of previously existing cells, and it has a variety of cell organelles, including the nucleus, cytoplasm, endoplasmic reticulum, ribosomes, and Golgi apparatus.

Prokaryotic cells are referred to as immature cells because they lack cell organelles, whereas eukaryotic cells are referred to as advanced and developed cells since they include multiple cell organelles and a nucleus

Like amoebas, unicellular creatures consist of a single cell that performs all of their activities, whereas multicellular organs and a nucleus.

Thus, the correct option is B, eukaryotic cells.

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Knowing the alpha (impact) angle of a blood stain can provide information on the point-of-convergence. The correct alternative is option A.

The alpha angle is the angle between the long axis of a bloodstain and a line perpendicular to the surface on which the bloodstain has landed.

This angle is useful in determining the direction from which the blood droplet originated and can provide important information about the point of convergence, which is the location in three-dimensional space where the blood spatter originated.

By analyzing the alpha angle of multiple bloodstains in a crime scene, forensic investigators can determine the direction of the blood droplets' travel, and subsequently the location of the point of convergence.

The point of convergence is the point at which the lines of travel of multiple blood droplets intersect in three-dimensional space, and is typically an important area to investigate as it can provide important information about the location and movement of the victim and perpetrator during the crime.

In addition to the point of convergence, the alpha angle can also provide information about the type of weapon or object that was used to produce the bloodstain.

For example, a high-velocity impact angle (i.e. small alpha angle) can indicate a gunshot, while a low-velocity impact angle (i.e. large alpha angle) can indicate a blunt force impact, such as from a baseball bat or a hammer.

So, the correct alternative is option A.

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The effects of exercise on heart rate can be studied by analyzing the number of heart pumps according to physical exercises, while control variable is room temperature.

An independent variable is any variable that isn't changed along the experimental procedure, while the dependent variable is modified by the conditions.

The sample size must be statistically significant (N sample size higher than 50 individuals) and a number of trials at least two to compare results.

In conclusion, the effects of exercise on heart rate can be studied by analyzing the number of heart pumps (dependent variables) according to physical exercises (independent variable), control variable is room temperature.

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Answer:

frvfeavdsfgrz

Explanation:

Answer: After our brain receives the electrical signals, we make sense of all this stimulation and begin to appreciate the complex world around us. This psychological process—making sense of the stimuli—is called perception.

Crabs is on of the example of marine phyletic group. Crab's adaptations include: hard exoskeleton, their claws and concealing coloration, when animal hides itself against a background of the same color

The Northern Hermit Crab has soft and long, spirally curved abdomen. A blue crab's swim fins make blue crabs different from other crabs. The paddles help the blue crabs move freely about the Chesapeake Bay by helping them to swim.

There are around 4,500 species of crab worldwide ranging in size from tiny pea crabs to Japanese Spider Crabs.

Extraordinary diversity on land is due to insects, flowering plants, and fungi as compared to few species in the sea.

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Answer:

no chickens and ducks not together live

Answer:Yes

Explanation:

I had my chickens and duck live together for a long time. The ducks might try to peck the chickens but it is just them figuring out the pecking order. Hope this helps!

Answer:

Magnesium

Explanation:

Magnesium

Answer:

sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.

Explanation:

The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block.

Researchers are currently exploring the use of RNAi to target specific genes involved in hepatitis, with promising results in preclinical studies.The goal of RNAi research is to understand and replicate the process of using small interfering RNAs (siRNAs) to prevent the expression of specific genes

in order to treat various ailments, including cancer and hepatitis. By targeting and silencing the genes responsible for disease, RNAi has the potential to provide more targeted and effective therapies than traditional treatments. Researchers are currently exploring the use of RNAi to target specific genes involved in hepatitis, with promising results in preclinical studies.

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Species extinctions, population declines, species movements, and species losses can all be attributed to biodiversity.

The correct answer is B

All life on planet Earth, including humans, depends on processes made possible by biodiversity. We cannot have the robust ecosystems that we depend on to give us the air we and the food that consume without a diverse variety of animals, plants, and microorganisms. The natural world itself is also valued by people.

Environment-related issues are where biodiversity has the most impact. The Earth's natural processes are supported by healthy ecosystems. Even without species that support them, operations like soil re-cycling, water purification, pest management, and others couldn't be carried out. These processes could be severely damaged if they are interrupted.

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The reproductive system hormone that is mismatched to its source is; Testosterone; posterior lobe of pituitary gland. Option C is correct.

Testosterone is a male sex hormone primarily produced in the testes, which are part of the male gonads. It is not produced in the posterior lobe of the pituitary gland. The posterior lobe of the pituitary gland mainly releases hormones like oxytocin and vasopressin, which are not directly involved in the production of testosterone.

The correct source for testosterone is the testes, while the pituitary gland, specifically the anterior lobe, releases luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which play important roles in the regulation of reproductive processes in both males and females. Inhibin is also produced in the gonads (ovaries in females and testes in males) and acts as a feedback hormone to regulate the secretion of FSH from the anterior pituitary gland.

Hence, C. is the correct option.

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--The given question is incomplete, the complete question is

"Which of these reproductive system hormones is mismatched to its source? A) inhibin; gonads B) LH; anterior lobe of pituitary gland C) testosterone; posterior lobe of pituitary gland D) FSH; anterior lobe of pituitary gland."--

According to the punnett square, 1) Phenotype long hair and Tortoise shell. 2) Genotype Ll XBXb 3) Gametes: L XB, L Xb, l XB, l Xb.  4) Phenotype Short hair and Black. 5) Genotype ll XbY. 6) Gametes: l Xb, l Xb, l Y, l Y. 7) 4/16 = 1/4. 8) 4/16 = 1/4. 9) 2/16 = 1/8. 10) 2/16 = 1/8. 11) 0/16. 12) 2/16 = 1/8. 13) 2/16 = 1/8. 14) 1/8. 15) 1/8. 16) 1/8. 17) 1/8. 18) 0/8. 19) 0/8. 20) 1/8. 21) 1/8. 22) 1/8. 23) 1/8.

To answer this question, we will use a punnett square which is the best representation of a cross.

The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.

Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.

Let us also remember that,

In the exposed example, two genes code for two traits,

- Color ⇒ X linked gene ⇒ co-dominant

- Length ⇒ Autosomal gene ⇒ complete dominance

These genes are independent from each other.

Female

1) Phenotype

2) Genotype ⇒ Ll XBXb

3) Gametes ⇒ L XB, L Xb, l XB, l Xb

Male

4) Phenotype

5) Genotype ⇒ ll XbY

6) Gametes ⇒ l Xb, l Xb, l Y, l Y

Cross:

Parentals)   Ll XBXb  x  ll XbY

Punnett square)    LXB              LXb            lXB             lXb

                lXb    LlXBXb       LlXbXb       llXBXb        llXbXb

                lXb    LlXBXb       LlXbXb       llXBXb        llXbXb

                lY       LlXBY         LlXbY           llXBY          llXbY

                lY       LlXBY         LlXbY           llXBY          llXbY

F1) 50% of the progeny are expected to be females

   50% of the progeny are expected tp be males

From the whole progeny,

7) long hair: 4/16 = 2/8 = 1/4 ⇒ LlXBXb + LlXbXb + LlXBY + LlXbY

8) short hair: 4/16 = 2/8 = 1/4 ⇒ llXBXb + llXbXb + llXBY + llXbY

9) tortoise shell female: 2/16 = 1/8 ⇒ LlXBXb, llXBXb

10) black female: 2/16 = 1/8 ⇒ LlXbXb, llXbXb

11) orange female: 0/16

12) black male: 2/16 = 1/8 ⇒ LlXbY, llXbY

13) orange male: 2/16 = 1/8 ⇒ LlXBY, llXBY

14) long tortoise female: 1/8 LlXBXb

15) short tortoise female: 1/8 llXBXb

16) long black female: 1/8 LlXbXb

17) short black female: 1/8 llXbXb

18) long orange female: 0/8

19) short orange female: 0/8

20) long black male: 1/8 LlXbY

21) short black male: 1/8 llXbY

22) long orange male: 1/8 LlXBY

23) short orange male: 1/8 llXBY

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Fight-or-flight response refers to an organism's response when faced with an acute threat to survival. It is marked with physical changes that include nervous and endocrine changes preparing the organism to react or to retreat.

For example, when a snake faces a predator or a threat, its responses could be crawling away or acting as if it is ready to attack as its defensive displays. It could be through hooding, hissing, and raising the upper portion of their bodies to stand erect.

Microorganisms that catabolize sugars into ethanol and hydrogen gas would most likely be categorized as heterolactic fermenters.

Fermentation is any of many anaerobic biochemical reactions in which an enzymes produced by a microorganism catalyses the conversion of one substance into another.

Fermentation especially involves the conversion (using yeast) of sugars to alcohol or acetic acid with the evolution of carbon dioxide.

However, fermentation can either be homolactic or heterolactic. The conversion of one glucose molecule into two lactic acid molecules is homolactic fermentation while the conversion of one glucose molecule into lactic acid, carbon dioxide, and ethanol is known as heterolactic fermentation.

Therefore, it can be said that microorganisms that catabolize sugars into ethanol and hydrogen gas would most likely be categorized as heterolactic fermenters.

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both loses its waterproofness. XD

An enzyme with a kcat of 560 s^-1 can convert 560 substrate molecules into product molecules per second, under optimal conditions. The kcat value represents the enzyme's catalytic efficiency or turnover number.

The kcat value of an enzyme represents the maximum number of substrate molecules that can be converted to product per unit time when the enzyme is fully saturated with substrate. For an enzyme with a kcat of 560 s^-1, this means that 560 substrate molecules can be converted to product in one second by one molecule of the enzyme. The exact number of substrates that will be converted to product will depend on the concentration of substrate and enzyme in the reaction mixture, as well as other factors such as temperature and pH.

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a fossilized cell is discovered and evidence suggest it reproduced on its own and had dna but a membrane did not enclose its dna. this is more likely a prokaryotes.

Prokaryotes are creatures without a nucleus or other organelles in their cells. Bacteria and archaea, two separate groupings of prokaryotes with allegedly independent evolutionary histories, are separated into.

The majority of prokaryotes are tiny, single-celled creatures with a straightforward structure. Prokaryotic cells lack intrinsic membrane-bound organelles in their cytoplasm, while being surrounded by a plasma membrane. Prokaryotes differ from eukaryotes, another type of creatures, in that they lack a nucleus and other membrane-bound organelles.

One circular DNA molecule, or chromosome, makes up the majority of the genetic material carried by prokaryotes. Prokaryotes have a nucleoid in the centre of the cell that houses the DNA but is not protected by a nuclear membrane. In addition to chromosomal DNA, many prokaryotes also possess smaller, circular DNA molecules known as plasmids, which can provide genetic benefits in particular situations.

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The process which facilitates the formation of the fibrocartilaginous callus in the fracture repair of bone is endochondral ossification.

First, a hematoma forms at the site of fracture which forms at the site of fracture which is replaced by fibrocartilaginous callus. A fibrocartilaginous callus is replaced by a bony callous. A bone callus basically forms as a part of the normal healing process during the fracture of a bone. A bone callus develops at the site of the fracture.

Endochondral ossification is basically the process by which the embryonic cartilaginous model of most of the bones contributes to the growth and is then gradually replaced by bone.

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The anticodon triplet sequence of the next tRNA to interact with mRNA cannot be determined without additional information regarding the mRNA sequence and the genetic code being used.

The genetic code is a set of rules that determines the relationship between the sequence of nucleotides in DNA or mRNA and the sequence of amino acids in a protein. Each set of three nucleotides, called a codon, corresponds to a specific amino acid or a stop signal.

Similarly, tRNAs have triplet sequences called anticodons that bind to the codons on the mRNA during translation. The base pairing between the codon and anticodon determines the specific amino acid that is added to the growing polypeptide chain.

Therefore, without knowing the mRNA sequence and the genetic code being used, it is not possible to determine the anticodon triplet sequence of the next tRNA to interact with mRNA. However, it is known that the base pairing between the codon and anticodon follows specific rules, such as Watson-Crick base pairing and wobble base pairing, which allow for some flexibility and redundancy in the genetic code.

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Answer:

Deletion mutations can affect the entire base sequence.

Explanation:

Answer:

Deletion mutation may cause a shift of base sequence, causing the reading frames for base sequence to change during translation. This may affect the type of amino acid it the original base sequence codes for, resulting in a change in amino acid sequence in the polypeptide translated. Therefore, affecting the whole protein itself. There may be wrong amino acids that prevents vital bonds like disulfide bridges to form, resulting in a huge change in 3 dimensional conformation of the protein. A point mutation may result in a gene sequence being edited. However, only the target sequence is being mutated. The rest of the gene sequences are left untouched. Therefore, the impact is localised. This ensures that even though a few wrong amino acids may be in the polyleptide, most of the bonds that are crucial for the correct 3 dimensional conformation is still present, therefore, lesser defects will be resulted due to point mutation as compared to deletion mutation.

Explanation:

Hope this helps, Have a Great Day!!

Explanation:

Answer:

Root system of chilli crop is highly branched with a tap root at centre. Chilli plants withstand drought better than excess soil moisture. Taproots anchor plants deeply, helping to prevent the wind from blowing them over and stabilizing plants that grow in areas of shifting soils such as beaches or sand dunes

Answer:

its the nucleus

Explanation:

Answer:

B

Explanation:

The chromatin in the nucleus of the cell contains DNA

Answer:

GGATATATGCCCTAG

Explanation:

Those are the letters that would pair up in the mRNA strand. Adenine goes with Thymine and Cytosine goes with Guanine. Zip up these two sides and you get a successful DNA strand.

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To determine the number of hours that have passed since the original two bacteria were placed in the dish, we can use the fact that the number of bacteria quadruples every hour.

Starting with two bacteria, we can observe the progression:

Hour 1: 2 bacteria

Hour 2: 2 x 4 = 8 bacteria

Hour 3: 8 x 4 = 32 bacteria

Hour 4: 32 x 4 = 128 bacteria

Hour 5: 128 x 4 = 512 bacteria

Hour 6: 512 x 4 = 2048 bacteria

Hour 7: 2048 x 4 = 8192 bacteria

Hour 8: 8192 x 4 = 32768 bacteria

Hour 9: 32768 x 4 = 131072 bacteria

Therefore, it took 9 hours for the number of bacteria to reach 131,072.

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Answer:

d

Explanation:

got it right on the test

Emergency contraception works by inhibiting fertilization, i.e., preventing the sperm from fertilizing the egg. It also works by speeding up ovulation before the sperm can attach. Further, it does not allow the fertilized egg to attach to the uterus, leading to abortion of the fetus already created.

Emergency contraception (EC) is a method of contraception that women can use to avoid unwanted pregnancy after unprotected sexual activity. EC comes in a variety of forms, including tablets, IUDs, and emergency contraceptive pills (ECPs). Emergency contraceptive pills are sometimes referred to as “morning-after pills,” even though they can be used up to five days after intercourse.

Inhibiting Fertilization:

The contraceptive pills prevent the egg from being fertilized by the sperm, preventing fertilization. Hormones like progesterone and estrogen help to prevent pregnancy by inhibiting ovulation. If an egg has already been released, it may prevent fertilization by altering the cervical mucus and making it difficult for the sperm to swim.

Speeding up ovulation before the sperm can attach:

Emergency contraceptive pills are taken after unprotected sex to prevent pregnancy. These pills can help to speed up ovulation and prevent fertilization by altering the cervix's lining.

Aborting the fetus already created:

It does not allow the fertilized egg to attach to the uterus, leading to abortion of the fetus already created. A fertilized egg does not get implanted in the uterus, which leads to the death of the fetus.

In conclusion, emergency contraception works by inhibiting fertilization, speeding up ovulation before the sperm can attach, and does not allow the fertilized egg to attach to the uterus, leading to abortion of the fetus already created.

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