chrysanthemums are a short-day plant and spinach is a long-day plant. will these two plants ever flower in the same place at the same time?

Answer:

D

Explanation:

chloroplasts aids in the process of photosynthesis

ANSWER :

in the chloroplasts

Photosynthesis occurs in chloroplasts found in the leaves and green stems of plants.

Answer: D

Explanation:

The point mutation can alter the amount of DNA sequences depending upon the type of mutation.

A point mutation is a type of mutation in which the DNA or RNA, the organism's genetic material, is altered by the addition, deletion, or modification of a single nucleotide base. The amount of DNA is unaffected by base substitution since the nucleotide count is unaffected after the substitution. The amount of DNA grows with insertions and mutations because there are more nucleotides involved, whereas it decreases with deletion mutations. A common example of substitution point mutation is sickle cell anemia.

Hence, the type of point mutation determines the amount of DNA.

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because the river is blank, how could it not end into blank??

im just doing this fr points lol

thx btw

Answer: Open watersheds rivers rain into ocean

Explanation: but blank rivers drain into blank could mean anything, unless there are words you can choose from than that will narrow it down

Answer:  All of these choices are correct.

Explanation:

The Cytomegalovirus is one of the most common viruses there is that affects humans. Humans of all ages can carry it but because the immune system is capable of fighting it, it is usually in its latent form which is the way that it is usually spread.

When the immune system has been weakened, the virus can cause conditions such as liver problems. It is spread through bodily fluids such as  saliva, respiratory mucus, milk, urine, semen, and cervical secretions.

Answer:

Why is the Calvin cycle considered a cycle? The Calvin cycle is a dark reaction because it does not need sunlight. Although it can happen during the day, this process does not require energy from the sun to work.

Explanation: it does not need sunlight.

The lock and key model states that the active site of an enzyme precisely fits a specific substrate.

The induced adaptation model states that upon substrate binding, the enzyme's active site undergoes a conformational change that improves adaptation. The lock-and-key model is a model of enzyme-substrate interaction that suggests that the enzyme and substrate have specific complementary geometries that fit snugly together. Enzymes are very specific.

Must bind to a specific substrate before it can catalyze a chemical reaction. The key-and-key model, also called Fisher theory, is one of two models that describe the interaction of enzymes and substrates. The lock-and-lock model assumes that the active site and substrate of an enzyme have the same shape. The substrate must fit perfectly into the active site of the enzyme.

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Answer:

Its found in both.

Explanation:

Hope this helped!

Answer: It is in both plants and animals

Explanation:

Answer: Relatively less abundant water on land makes survival difficult for terrestrial animals. All four problems stem from a lack of water. Terrestrial animals spend energy looking for water, which is not available easily. Terrestrial temperature fluctuates widely, so energy investments have to be made to keep body temperatures regulated.

Explanation:

Answer: Option 2- Antibodies present in Recipient plasma. 

Answer:

When determining blood type compatibility before a transfusion, the most important detail about the recipient is their blood type. Specifically, the ABO blood group system is the most important factor to consider. The ABO system includes four blood types: A, B, AB, and O, which are determined by the presence or absence of specific antigens on the surface of red blood cells.

For a successful transfusion, it is important to match the donor's blood type with the recipient's blood type. For example, a person with blood type A can only receive blood from a donor with blood type A or O, but not from a donor with blood type B or AB. Similarly, a person with blood type B can only receive blood from a donor with blood type B or O, but not from a donor with blood type A or AB.

In addition to the ABO blood group system, the Rh factor (positive or negative) should also be considered to ensure compatibility between the donor and recipient.

Explanation:

Explanation:

HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe.

Answer:

25% of the offspring will be short, tt.

Explanation:

Due to technical problems, you will find the complete explanation in the attached file

Answer:

more blood cells come to that area to ward off infection

Explanation:

The reasons why very few differences in DNA sequences between two people alter the amino acid sequences of proteins are mutations do not occur within coding sequences. a very small percentage of the human genome consists of codons within genes, all mutations within codons are repaired by dna repair machinery, many mutations within codons are silent, and natural selection might lead to the disappearance of deleterious mutations.

First, a small percentage of the human genome consists of codons within genes, which means that many mutations may occur in non-coding regions and not affect the amino acid sequences. Second, many mutations within codons are silent, which means they do not change the amino acid that is coded for, due to the redundancy of the genetic code, this phenomenon allows for variations in the DNA sequence without altering the protein's structure or function. Third, the DNA repair machinery is efficient at repairing mutations within codons, ensuring that most errors in DNA replication are fixed before they can cause changes to amino acid sequences.

Lastly, natural selection plays a role in the preservation of functional proteins. Deleterious mutations, which negatively impact the organism's fitness, are likely to be removed from the population over time. This selective pressure helps maintain the integrity of amino acid sequences in proteins and limits the impact of DNA sequence differences between individuals. So the correct answer is all above correct.

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Answer:

Loam

Explanation:

because they contain lots of organic matter or compound in them

Answer:

d) Gypsum​

Explanation:

Plaster of Paris is obtained by heating gypsum.

I hope this helped :)

The kind of this protist is plasmodial slime mold.

Thus, the correct option is B.

Protists аre simple eukаryotic orgаnisms thаt аre neither plаnts nor аnimаls or fungi. Protists аre unicellulаr in nаture but cаn аlso be found аs а colony of cells. Most protists live in wаter, dаmp terrestriаl environments or even аs pаrаsites.

Kingdom Protista is classified into the following:

Plasmodial slime molds (myxomycetes) are а group of fungus-like orgаnisms usuаlly present аnd sometimes аbundаnt in terrestriаl ecosystems. The myxomycete life cycle involves two very different trophic (feeding) stаges, one consisting of the uninucleаte аmoebаe, with or without flаgellа, аnd the other consisting of а distinctive multinucleаte structure, the plаsmodium.

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The answer is the chloroplasts, which is confusing as it doesn't begin with the letter c ofc. The only letter g word to do with photosynthesis would be glucose but that doesn't make much sense

A diverse ecosystem have less death by a natural disaster, due to presence of more species have a chance not affected by a sudden climate change. On the other hand, if the ecosystem have 1-2 species ecosystem,  slight change lead to half the population of the ecosystem

An ecosystem is  a structural and functional unit of where the living organisms and nonliving matter dwell with each other and with their surrounding environment, ecosystem was  coined by A.G.Tansley, an English botanist, in 1935.

The structural composition of an ecosystem made up of Biotic Components and Abiotic Components, both the components are interrelated with each other in which the flow of energy and components occur.

Biotic components are  living organisms are up classified  into autotrophs, heterotrophs and saprotrophs where Autotrophs are the producers like plants make food  by photosynthesis.

The heterotrophic organisms depend on other organisms for their food known as consumers can be classified into primary consumers, secondary consumers and tertiary consumers.

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A is the anwer, No rock material is constantly recycled on Earth's surface through the rock cycle.

Earth's age is generally acknowledged by astronomers and geologists to be 4.6 billion years. With the help of dating techniques like rubidium-strontium and uranium-lead, this age has been determined through the isotopic analysis of several meteorites as well as soil and rock samples from the Moon.

Rocks at the surface of the Earth are reduced in size by weathering. Sediments are the microscopic pieces. These sediments are moved around by erosion in different locations by running water, ice, and gravity. Sedimentation is the process by which sediments are deposited or laid down.

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Answer:

1. B

2. A

3. C

Explanation:

The Fst statistic reveals the degree of genetic variation between populations. If Fst is high, it indicates significant geographic population subdivision, while if it is low, it indicates little geographic population subdivision. As a result, Species A has significant population divergence in comparison to Species B.

Species A - observed genotype frequencies at two sampling locations and for both locations combined Genotype Frequencies

Allele Frequencies

HWE expected

A/AA/aa/a

Total#heterozygote frequency

individuals рq2pq

Location 130101050.70.30.42

Location 25 103550.20.80.32

Location 1 + 352045100

Location 2

The observed allele frequencies (p and q) and the expected heterozygote frequencies (2pq, assuming Hardy-Weinberg equilibrium) for Location 1 + 2:

Species A Observed allele frequencies: p=0.55 q=0.45

Expected heterozygote frequencies: 2pq = 2(0.55)(0.45)

                                                                    = 0.495

Species B Observed allele frequencies: p=0.55 q=0.45

Expected heterozygote frequencies: 2pq = 2(0.55)(0.45)

                                                                     = 0.495Fst

calculation: Fst is the proportion of genetic variation present among populations, and it is calculated by dividing the genetic variation between populations by the total genetic variation.

Fst = Fst = (Ht - Hs) / Ht

Species A: Fst = [0.495 − ((0.42 + 0.32) / 2)] / 0.495

                  Fst = 0.1767

Species B: Fst = [0.495 − ((0.50 + 0.48) / 2)] / 0.495

                 Fst = 0.0000

The Fst value is high in Species A and low in Species B. Species A shows a high Fst value (0.1767), which indicates a significant geographic population subdivision in this species. The low Fst value (0.0000) in Species B implies that there is little geographic population subdivision in this species.

The Fst statistic reveals the degree of genetic variation between populations. If Fst is high, it indicates significant geographic population subdivision, while if it is low, it indicates little geographic population subdivision. As a result, Species A has significant population divergence in comparison to Species B.

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The factors that determine where bone matrix is to be remodeled include blood flow, mechanical stress, hormones, and sex hormones, so the correct answer is e) All of the above.

Blood flow is essential for delivering nutrients and oxygen to the bone cells, promoting remodeling. Mechanical stress, caused by physical activity and weight-bearing, stimulates bone remodeling to strengthen the bones and adapt to the load.

Hormones, such as parathyroid hormone and calcitonin, regulate bone remodeling by controlling the balance between bone resorption and bone formation.

Sex hormones, like estrogen and testosterone, also play a crucial role in maintaining bone mass and density. All these factors work together to ensure proper bone remodeling and overall skeletal health.

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Calcium ions released from the sarcoplasmic reticulum enter the sarcoplasm of the muscle cell. The sarcoplasmic reticulum is a specialized type of endoplasmic reticulum found in muscle cells that plays a critical role in muscle contraction.

When a muscle cell is stimulated by a nerve impulse, calcium ions are released from the sarcoplasmic reticulum into the sarcoplasm, the cytoplasm of the muscle cell. These calcium ions bind to the regulatory protein troponin on the actin filaments of the muscle, causing a conformational change that allows the myosin heads to bind to the actin filaments and initiate muscle contraction. After contraction, the calcium ions are pumped back into the sarcoplasmic reticulum by active transport pumps, which requires ATP. This process is important for relaxing the muscle and preparing it for the next contraction.

In resting muscle cells, the concentration of calcium ions in the sarcoplasm is very low. When a nerve impulse arrives at the muscle cell, it triggers the release of calcium ions from the sarcoplasmic reticulum, which is a specialized organelle that stores calcium ions. The release of calcium ions causes the troponin-tropomyosin complex to move, exposing the binding sites on the actin filaments. The myosin heads bind to these sites, forming cross-bridges that pull the actin filaments towards the center of the sarcomere.

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Answer:

TTAAT

Explanation:

In a strand of DNA, Adenine and Thymine form complementary pairs, while Guanine and Cytosine form complementary pairs.  This sequence lacks Guanine and Cytosine.

Answer:

Without seeing the plant cell, it is not possible to determine the exact stage of mitosis the plant cell is in. However, during metaphase, the chromosomes align at the equator of the cell and are attached to the spindle fibers. During anaphase, the spindle fibers separate the sister chromatids and pull them towards opposite poles of the cell. During telophase, the chromosomes reach the poles of the cell, and a new nuclear envelope begins to form around each set of chromosomes. Therefore, if the plant cell has chromosomes that are aligned in the middle of the cell, it is likely in metaphase. If the chromosomes are being pulled towards opposite poles of the cell, it is likely in anaphase. If the chromosomes have reached the poles and new nuclear envelopes are forming, it is likely in telophase.

Answer: B

Explanation:

DNA is duplicated so that each new daughter cell inherits an identical copy of the genome, while the centrosome is duplicated to help initiate the formation of the two poles of the mitotic spindle and to supply each daughter cell with its own centrosome.