MULTIPLE CHOICE
Question 15
If a parent cell has 46 chromosomes, how many
chromosomes will be present in each daughter cell after
mitosis?
А
12.
B
23
46
D
9
2

Answer:

Im not very sure how to answer that question, if you had a list of answers it would be a tad easier

Explanation:

Four basic components that affect the validity of an experiment are the control, independent and dependent variables, and constants. These basic requirements need to be present and identified to consider an experiment valid.

Maybe this will help ^^

An individual who is the offspring of two closely related parents will likely have homozygous alleles identical by descent.

An allele is certainly one of two or greater variations of DNA sequence (a single base or a segment of bases) at a given genomic vicinity. An person inherits  alleles, one from each discern, for any given genomic place wherein such variant exists. If the two alleles are the equal, the person is homozygous for that allele. If the alleles are exclusive, the man or woman is heterozygous.

"Allele" is the phrase that we use to describe the alternative form or variations of a gene. humans inherit one allele for each autosomal gene from every discern, and we generally tend to lump the alleles into classes. usually, we call them either regular or wild-type alleles, or ordinary, or mutant alleles.

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Membranes, like the cell membrane, are essential parts of cells because they serve as a barrier to control how chemicals enter and exit the cell.

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*I can't see the illustration

1. Snake would definitely kill or eat the rat.

2. The snake obviously.

3. The rat.

4. If the community of snakes increases, family of rats will extinct.

5. If the rats decrease in number, snakes would likely look for another prey.

6. Ecosystem would be unbalanced.

Answer:It means  in 5 sentences write about typhoon Yolanda

Explanation:

Answer:

The electron transport chain (ETC) is a series of protein complexes located in the inner membrane of the mitochondria that transfer electrons from electron donors to electron acceptors via redox reactions. As a result of the ETC, a proton gradient is formed across the inner mitochondrial membrane, which drives ATP synthesis by the enzyme ATP synthase. The ATP produced through oxidative phosphorylation is the primary energy source for most cellular processes.

Explanation:

The electron transport chain (ETC) is the final step of aerobic cellular respiration and is where the majority of ATP is generated. As electrons move through the ETC, they release energy that is used to pump hydrogen ions across the inner mitochondrial membrane, creating an electrochemical gradient. This gradient powers ATP synthase, which generates ATP by adding a phosphate group to ADP. In summary, the electron transport chain results in the production of ATP, which is the primary source of energy for cellular processes.

A few techniques that can be used to anchor aquarium plants in substrate for healthy growth includes; Tieing the plant to a rock or piece of driftwood, Using plant weights, Planting the plant in a pot and Using aquarium glue.

Tying the plant to a rock or piece of driftwood: This method works great for plants with rhizomes, like Anubias and Java Fern, as you mentioned.

Planting the plant in a pot: Some plants can do well when planted in pots with their preferred substrate. This is good because it is in a controlled enviroment and you can move plant without disturbing the plant.

plant weights: This method is said to be okay for buoyant plants that tend to float away before their roots can establish. However this can be disadvantagous if the weight is made with lead.

aquarium glue: This can be very effective for certain types of plants. It's important to use a glue that is safe for aquarium use (i.e., cyanoacrylate-based glues).

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Answer:

he said that the event was wonderful

Answer:

c.protein kinases

phosphorylation of molecules by enzymes known as kinases.

The termination of a cell signal is most likely caused by protein kinases. The correct option is c.

Cell signaling is a process of transfer of signal or any information from the cell surface to the cytosol and then to the nucleus which leads to a gene expression.

Termination is the last process, in which those signals or sequences have been transferred, that stops the process of transcription or translation. When a process is completed, termination codons are given to stop the process.

Protein kinase is the substance that transfers the phosphate group to other proteins to change their structure. They help in energy metabolic processes and cell cycling processes.

Thus, the correct option is c. protein kinases.

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When they answer the questions, there is a flag that appears, if you click on it, you can flag the answer and it reports them.

The difference between animal and plant cells is that they contain different organelles, among these are the chloroplasts that plant cells contain and animal cells do not.

Each of these cells will have their own requirements, which is why they will have different types of organelles to be able to meet these requirements. Among the differences will be that plant cells will have chloroplasts to be able to generate their own food since they cannot obtain it by other means, so they will manufacture sugar through sunlight.

In plant cells it will have a cell wall that will be surrounded by a cell membrane. While animal cells will not have this cell wall.

Therefore, we can confirm that plant cells and animal cells will have differences in their content, function and organelles.

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Answer:

The primary differences between animal and plant cells concern the types of organelles present within them. Although these cell types are similar in that they’re both eukaryotes, plant cells have several structures not present in animal cells: chloroplasts, amyloplasts, and cell walls.

Explanation:

p foster

Answer:

small intestine

Explanation:

Answer:

Homologous chromosomes separate from each other during anaphase I of meiosis.

Explanation:

Meiosis is a specialized type of cell division that occurs in sexually reproducing organisms. It involves two rounds of cell division, known as meiosis I and meiosis II, which result in the formation of haploid gametes (sperm or eggs) with half the number of chromosomes as the parent cell.

During meiosis I, homologous chromosomes pair up and exchange genetic material in a process called crossing over. Then, during anaphase I, the homologous chromosomes separate from each other and migrate to opposite poles of the cell. This is followed by telophase I, cytokinesis, and the formation of two new cells, each with a haploid set of chromosomes.

In contrast, during meiosis II, the sister chromatids of each chromosome separate from each other and migrate to opposite poles of the cell, resulting in the formation of four haploid daughter cells.

Answer: Site B

Explanation: I took the test。

The main skeletal features used to construct a cladogram include the presence or absence of specific bones/structures, bone shape/structure, dental characteristics, skeletal adaptations, and skull morphology.

Cladograms are phylogenetic trees that illustrate the evolutionary relationships between different organisms. When constructing a cladogram, various skeletal features can be used as characters to determine the branching patterns and common ancestry among organisms. Here are some main skeletal features used in cladistic analysis:

Presence or absence of specific bones or structures: The presence or absence of certain skeletal elements, such as wings or limbs, can provide insights into evolutionary relationships.

Bone shape and structure: Comparing the shapes, sizes, and structures of bones can help identify shared characteristics and infer common ancestry.

Dental characteristics: The structure and arrangement of teeth, including the type and number of teeth, can provide information about evolutionary relationships and dietary adaptations.

Skeletal adaptations: Features like the presence of a notochord, presence of a bony skeleton, or modifications for specialized locomotion (e.g., wings, fins, limbs) can be used to infer evolutionary relationships.

Skull morphology: Examination of the skull, including the shape of the cranium, presence and structure of specific cranial bones, and jaw structure, can help determine evolutionary relationships and functional adaptations.

By analyzing these skeletal features and comparing them across different organisms, cladistic analysis aims to identify shared derived characteristics (synapomorphies) that indicate common ancestry and to construct a branching pattern that represents the evolutionary relationships between the organisms being studied.

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What are the main skeletal features that can be used to construct a cladogram?

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Answer:

A monomer is a molecule that bonds with other identical molecules to form polymers. In this case, the correct answer is glucose, but galactose and fructose also belong in the monomer group, just aren't mentioned in the question. Sucrose is a somewhat archaic term for sugars in general, any simple sugar like the one we eat on a regular basis.

Explanation:

The molecules in the given image are transported down the concentration gradient. Thus, the correct option is C.

There are two ways by which molecules are transported across a membrane which are active transport and passive transport.

Diffusion is a type of passive transport, that is, it does not involve the expenditure of energy.

In diffusion, the transport of molecules across the membrane occurs from a region of high concentration to a region of low concentration, that is, transport occurs down the concentration gradient.

Thus, the molecules in the picture are transported through diffusion, that is down the concentration gradient. Thu,the correct option is C.

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For a hypotonic solution the movement of water is from the solution to the cell, in isotonic solution there is no net movement and for hypertonic solution the movement of water is from the cell into the solution.

Hypotonic solution is the one where the concentration of solute is less as compared to the cell. This is the reason why movement of water is from solution to the cell and the animal and plant cell become lysed and turgid respectively.

Hypertonic solution is the one where the concentration of solute is more as compared to the cell. This is the reason why movement of water is from cell to the solution and the animal and plant cell become shriveled and plasmolyzed respectively.

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Answer:

In the dark phase (which takes place in the stroma), the ribulose bisphosphate added to the carbon dioxide gas (CO2) in the air results in the production of organic compounds, principally carbohydrates or sugars, whose molecules contain carbon, hydrogen, and oxygen.

Explanation:

Answer:

Option 2

Explanation:

Stored energy decreases as it is passed from consumer to consumer.

Energy decreases as it progresses up the pyramid.

Statements a, b, e, and f are true, while statements c and d are partially true. Understanding the structure and function of chromosomes is fundamental to comprehending various aspects of genetics and cell biology.

a. Chromosomes are composed of DNA and packaging proteins called histones so they may fit tightly into the nucleus of a cell.

This statement is true. Chromosomes consist of DNA molecules that are tightly wound around histone proteins. This compact packaging allows the long DNA molecules to fit within the limited space of the cell nucleus.

b. Located on each chromosome are segments of DNA known as genes or units of inheritance that code for functional products.

This statement is true. Genes are specific segments of DNA that are located on chromosomes. They contain the instructions for the synthesis of functional products such as proteins or RNA molecules.

c. Homologous chromosomes contain the same genes and the same allele combination.

This statement is partially true. Homologous chromosomes are chromosome pairs that carry the same genes, but they may not necessarily have the same allele combination. Alleles are different forms or variants of a gene, and they can differ between homologous chromosomes.

d. DNA replication occurs prior to the cell cycle, in which copies of each homologous chromosome are made, and each of these copies is called a sister chromatid.

This statement is partially true. DNA replication does occur prior to the cell cycle, and during replication, copies of each chromosome are made. However, the copies are not called sister chromatids at this stage. Sister chromatids are formed when the replicated chromosomes remain attached to each other until they separate during cell division.

e. After replication, sister chromatids, which are identical copies of a chromosome, contain identical allele combinations.

This statement is true. After DNA replication, the two sister chromatids that make up a replicated chromosome are indeed identical copies of each other. They contain the same genetic information, including the same alleles.

f. The ultimate purpose of sexual reproduction and replicating chromosomes is to pass on a copy of a cell's genes to the next generation of cells within the body.

This statement is partially true. The ultimate purpose of sexual reproduction is to pass on a copy of an organism's genes to the next generation. However, the statement specifically mentions passing on genes to the next generation of cells within the body, which is not entirely accurate.

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The Question was Incomplete, Find the full content below :

Which of the following statements concerning chromosomes is/are true?

a. Chromosomes are composed of DNA and packaging proteins called histones so they may fit tightly into the nucleus of a cell.

b. Located on each chromosome are segments of DNA known as genes or units of inheritance that code for functional products.

c. Homologous chromosomes contain the same genes and the same allele combination.

d. DNA replication occurs prior to the cell cycle, in which copies of each homologous chromosome are made and each of these copies are called sister chromatids.

e. After replication, sister chromatids, which are identical copies of a chromosome, contain identical allele combinations.

f. The ultimate purpose of sexual reproduction and replicating chromosomes is to pass on a copy of a cell's genes to the next generation of cells within the body.

Answer:

B

to support the statement that no new atoms are created in a chemical change

This type of active transport is called endocytosis, because the substance to be internalized is first surrounded by the cell membrane, forming a vesicle, which is then integrated into the cytoplasm.

Answer:

A single mutation is unlikely to result in cancer. Cancer is usually caused by a series of mutations that accumulate throughout the course of a person's life. As a result, cancer is more common in older adults. They've seen more chances for mutations to accumulate.

Explanation:

Answer: Cell Size. At 0.1–5.0 µm in diameter, prokaryotic cells are significantly smaller than eukaryotic cells, which have diameters ranging from 10–100 µm (Figure 3.7). The small size of prokaryotes allows ions and organic molecules that enter them to quickly spread to other parts of the cell.

Explanation: