A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified?
Presence of a double membraned organelle (chloroplast) confirms that this is a eukaryotic cell, probably a plant cell. In contrast, prokaryotic cells do not have double membrane bounded organelles whereas both prokaryotic and eukaryotic cells have cytoplasm, DNA and membrane.
The best fit statement would be that the cell is eukaryotic as it comprises of chloroplasts.
Further Explanation:
Chloroplasts are a kind of plant cell organelles. These are essential for carrying out photosynthesis. It captures the sunlight, transforms it, and stores it in the energy storage molecules NADPH and ATP while releasing water and oxygen in the plants and algal cells.
Eukaryotic cells are those cells which comprise of organized organelles as well as nucleus which is wrapped by nuclear membrane. For instance, plants, animals, fungi, and protists. The genetic material of such organisms is arranged in chromosomes. Such cells comprise of many structures which perform different functions in the cell. For instance, ribosomes are responsible for making the proteins, mitochondria is known to produce energy molecules in the form of ATP, and endoplasmic reticulum aims in sorting and packaging the proteins. All the organelles are floating in the cytoplasm.
A prokaryotic cell, on the other hand, is a single celled and simple organism that lacks a nucleus or any other membrane-bound organelles. DNA or deoxyribonucleic acid is known to be a central segment of the cell or a darkened area which is called as nucleoid. All the cells share four main common elements:
1. Plasma membrane
2. Cytoplasm
3. DNA
4. Ribosomes
In the provided case, chloroplast is present and this confirms that the cell is a eukaryotic cell.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Plants
Keywords:
Prokaryotic cells, eukaryotic cells, chloroplasts, DNA, cytoplasm, mitochondria, plasma membrane, endoplasmic reticulum, ribosomes, nucleoid.
What was the work of Rudolf Virchow trying to prove?
A. All cells came from preexisting cells.
B. Bacteria were unicellular organisms.
C. The theory of spontaneous generation could be supported.
D. Plants had different cells than animals.
Answer:
A. All cells came from preexisting cells.
Explanation:
Rudolf Virchow is one of the scientists being credited for postulating the cell theory. He specially worked on the third component of the theory which said that all cells come from preexisting cells. Previously it was believed that new cells formed from a fluid substance called as blastema. Blastema imbalance lead to various kind of diseases. Many scientists disproved this theory of spontaneous generation by showing that under sterile conditions new cells can not be formed until and unless a parent cell is already present. But it was Virchow's work which got largely recognized.
the correct (answer)
is. (A.) All cells come from preexisting cells.
...hope this helps
A scientific theory is a well-tested explanation for a wide range of observations or experimental results. A hypothesis is a possible answer to a question. When does a hypothesis become a scientific theory? A. after the hypothesis is first formed by a scientist B. after a hypothesis is shown to be correct in one experiment C. after a competing hypothesis has failed testing D. after the hypothesis has been confirmed through extensive testing
A molecule whose ends have opposite electric charges is called a _____ molecule.
magnetic
diatomic
neutral
polar
Acid + base yields salt + water is an example of a(n):
-synthesis reaction
-exchange reaction
-decomposition reaction
-reversible reaction
How do you think the amount of light affects how plants grow
The amount of light greatly affects how plants grow through photosynthesis. Insufficient or excessive light can have negative effects on plant growth. Different plants have different light requirements.
Explanation:In biology, the amount of light greatly affects how plants grow through the process of photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy, in the form of glucose, which is used for growth and development. Light provides the energy needed for this process to occur. Plants need a certain amount of light to thrive and grow properly.
For example, insufficient light can lead to weak, spindly stems and pale, small leaves, while excessive light can cause leaf burn and other damage. Plants have different light requirements depending on the species. Some plants, like cacti, can survive and grow in low light conditions, while others, like sunflowers, require full sun to thrive. Understanding a plant's light needs is important for successful cultivation.
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Which element in Period 5 is the most active metal
Answer:
Rubidium is most active metal in period 5
Explanation:
There are total 18 elements in the fifth period of element table. There are total 18 elements in this period out of which rubidium is the smallest and lies at the starting of the fifth period. Unlike other elements of its group , rubidium is an alkali metal and has an oxidation state of +1 which makes it highly reactive. It reacts violently in air and water.
The Edwards brothers rebelled against Mexico because
A.
Mexican officials permitted other people to live on their land.
B.
Mexican troops forbade them to settle on their land.
C.
Mexican settlers did not recognize their land rights.
D.
Mexican officials permitted slavery on their land.
The correct answer is option (C). The Edwards brothers rebelled against Mexico because mexican settlers did not recognize their land rights.
The Edwards brothers, along with other settlers in Texas, rebelled against Mexico due to a variety of reasons, one of which was the lack of recognition of their land rights by Mexican settlers. This was a significant issue because it undermined the settlers' ability to maintain control over their property and livelihoods.
Option A is incorrect because Mexican officials permitted other people to live on their land, but this was not the primary reason for the rebellion. Option B is incorrect because Mexican troops did not forbid them to settle on their land; in fact, the Mexican government had initially encouraged American settlement in Texas.
Option D is also incorrect because Mexican officials did not permit slavery on their land; on the contrary, Mexico had abolished slavery, which was another point of contention for some of the settlers who wanted to continue the practice.
What measures the amount of displacement in a longitudinal wave?
Why is the ability to swim an inherited trait in a fish but a learned trait in a human being
Part 1: Which substance has a higher solubility? Part 2: Explain your answer for Part 1.
Julia did an experiment to study the solubility of two substances. She poured 100 mL of water at 20 °C into each of two beakers labeled A and B. She put 50 g of Substance A in the beaker labeled A and 50 g of Substance B in the beaker labeled B. The solution in both beakers was stirred for 1 minute. The amount of substance left undissolved in the beakers was weighed. The experiment was repeated for different temperatures of water and the observations were recorded as shown.
Experimental Observations
Substance
Mass of Undissolved Substance at Different Temperatures (gram)
20 °C 40 °C 60 °C 80 °C
A 40 37 34 30
B 15 14 13 12
PLEASE ANSWER NO ONE IS ANSWERING AND I NEED HELP ILL GIVE YOU ALL MY POINTS
the way to get this answer would be to find the answer that has less undissolved mass because you have to find the one with higher solubility, which also means the one that can dissolve the most mass.
Solubility is the solute's ability to get dissolved in the solvent to form the saturated solution. The solubility of substance B in beaker B is more as compared to substance A.
What is solubility?
The capacity of the solute to form a solution with a solvent is defined by solubility. The solubility depends on many factors like pressure, mass, reactivity, temperature, etc.
The solubility is directly proportional to the temperature and increases with a rise in temperature. The mass of substance A is higher than that of substance B at all the temperatures and hence its size may be large.
Therefore, the mass of substance B is dissolved more at all temperatures as compared to substance A.
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What is the main function of a fungus's hyphae
Fungal hyphae's primary function is to absorb nutrients through a high surface area-to-volume ratio and the release of enzymes that break down complex molecules into absorbable forms.
The main function of a fungus's hyphae is the absorption of nutrients from the environment. These thread-like structures maximize the fungus's surface area compared to its volume, enhancing its ability to absorb nutrients efficiently. The high surface area-to-volume ratios of hyphae allow for maximum exposure to the nutrient source, and the secretion of hydrolytic enzymes like cellulase aids in breaking down complex organic molecules into simpler forms that the fungi can absorb. These enzymes dismantle components such as the polysaccharide cellulose found in plant cell walls. Some fungi also develop specialized structures for absorbing nutrients directly from living hosts, but the overarching role of hyphae is to facilitate nutrient uptake.
No matter what food you eat, you can always trace the source of energy back to what
What organelle in muscle cells was affected most during exercise?
Which molecule is involved in the immune system?
Answer:
The proof that in any synthesis reaction, a chemical change has occurred is that in a synthesis reaction, two reactants combine to form a new compound.
Explanation:
which statement best explains why muscle cells and skin cells do not look and act the same?
1.) The two types of cells have different genes
2.) There is no similarity in the chromosomes of the two types of cells
3.) All of the same genes are being expressed in both types of cells
4.) The genes in each type of cell are being expressed differently
Answer: Option 4 The genes in each type of cell are being expressed differently
Explanation:
Both skin cells and muscle cells are somatic cells i.e the cells that make up the body parts.Since, both of them are somatic cells they both contain the same number of chromosomes which in case of humans is 23 pairs.The set of genes present in each type of cell in the body is the same and therefore, both muscle cell and skin cells have the same genes.The reason why muscle cells and skin cells do not look and act the same is that even though these cells contain the same genes, there is differential expression of genes in these cells.Differential expression of genes basically means that different combination of genes are activated in a cell which plays a role of defining the purpose of the cell. This means that the set of genes that are activated in the skin cells are different from that of the muscle cells.As the genes are being expressed differently in the muscle and skin cells, both these cells acquire different characteristics and thus, look different and perform different functions.So out of all the options, option 4 is the correct one.
What Organism is most likely 50 meters in size
.Lizard
.Bacteria
.tree
.ant
what is the difference between a reactant and a product?
A reactant is a starting material in a chemical reaction, while a product is a substance formed by the reaction.
What is a reactant and a product?In a chemical reaction, a reactant is a substance that undergoes a chemical change, while a product is a substance that is formed as a result of the chemical change. Reactants are the starting materials of a chemical reaction, and products are the end result.
Reactants are usually listed on the left side of a chemical equation, while products are listed on the right side. The arrow in the middle of the equation indicates the direction of the reaction, with reactants being converted into products.
Reactants can be elements, compounds, or ions, and they can be either solid, liquid, or gas. Products can also be elements, compounds, or ions, and their physical state may be different from that of the reactants.
The mass of the reactants in a chemical reaction is equal to the mass of the products, according to the law of conservation of mass. This means that no atoms are created or destroyed in a chemical reaction, only rearranged to form new substances.
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Chemical weathering occurs more rapidly in what kind of climates? A. Warm with abundant rainfall B. Cold with high snowfall amounts C. Desertlike D. Cool and dry
Plates move apart at ____ boundaries. a. convergent c. divergent b. stable d. transform
Plates move apart at divergent boundaries. Divergent boundaries are locations where tectonic plates are pulling away from each other.
The correct option is C.
At divergent boundaries, tectonic plates move apart from each other. This movement is driven by the underlying forces of mantle convection and the upwelling of molten material from the Earth's mantle.
Divergent boundaries are commonly found along mid-ocean ridges, where new oceanic crust is formed. The process of seafloor spreading occurs as two tectonic plates move in opposite directions, creating a gap or rift between them. Magma from the underlying mantle rises to fill the gap, solidifies upon contact with the cold seawater, and forms new crust. This continuous upwelling and solidification of magma along the divergent boundary leads to the widening of the seafloor and the creation of new oceanic crust.
Hence , C is the correct option
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What is a potential impact of replication errors on the cell cycle
Answer:
underreplication or overeplication of the genome and can produce a large array of human genetic diseases, including cancer, birth defects, and many developmental abnormalities
Explanation:
How do the organisms' traits help them survive in Madagascar?
what is the energy released during cell respiration
Which of these is not a basic need of all organisms?
A.Food
B.Soil
C.Water
D.Appropriate environment
Which best describes the result of Mendel's work with pea plants? A. He showed that pea plants do not pass traits to their offspring. B. He discovered the scientific method. C. He figured out the best way to grow pea plants. D. He showed how traits are passed between generations
Answer: He showed how traits are passed between generations
Explanation: Apex 8/14/19
Which of the following statements best describes the journey westward in the mid-1800s?
It was extremely slowgoing, but the trails were easy to cross.
It took a long time and included a number of difficult obstacles.
It took a short time but included a multitude of challenges.
The obstacles were so difficult that few pioneers made the effort.
The correct answer is option B
The statement that describes the journey westward in the mid-1800's is - It took a long time and included a number of difficult obstacles.
The people or travelers experienced several obstacles like- they included rivers to cross, they had vast mountain ranges, it possessed wild animals, there was threat of various diseases and had lack of basic resources. And eventually these hurdles made the traveling time taking.
which pair of elements is found in only one of the four types of macromolecules
carbohydrates, lipids, proteins and nucleic acidssssssss
if a cell has 46 chromosomes, how many will it have after meiosis?
Final answer:
After meiosis, a cell that originally has 46 chromosomes will have 23 chromosomes. Meiosis reduces the chromosome number by half, resulting in haploid gametes with immense genetic variability due to independent assortment and crossover.
Explanation:
If a cell has 46 chromosomes, it would have 23 chromosomes after completing meiosis. Meiosis is a special type of cell division that reduces the chromosome number by half to produce gametes for sexual reproduction. After meiosis, each of the resulting four haploid cells contains half the DNA of the parent cell. Humans have 23 pairs of chromosomes, totaling 46 in a diploid cell. During meiosis, these pairs are separated, and thus each gamete ends up with 23 individual chromosomes.
Furthermore, this meiotic process contributes to genetic diversity through mechanisms like independent assortment and crossover. There are over eight million possibilities in chromosome alignment due to independent assortment alone (223 combinations), not including the variability created by crossover events. This ensures that each gamete, while having 23 chromosomes, is genetically unique.
Notably, somatic cells, which make up most of the body tissues and organs, typically have 46 chromosomes and are diploid, while gametes, being the reproductive cells, have 23 chromosomes and are haploid.
After meiosis, a cell will have 23 chromosomes.
Meiosis is a specialized cell division process that occurs in sexually reproducing organisms, reducing the chromosome number by half. In the context of a human cell with an initial count of 46 chromosomes, meiosis involves two sequential divisions: meiosis I and meiosis II. In meiosis I, homologous chromosomes separate, resulting in two daughter cells, each with 23 chromosomes.
These cells then undergo meiosis II, which resembles mitosis but involves haploid cells. Ultimately, four haploid cells are produced, each containing 23 chromosomes, representing half of the original chromosome number. This reduction in chromosome count is crucial for sexual reproduction, ensuring that when gametes (sperm and egg cells) fuse during fertilization, the resulting zygote restores the diploid chromosome number characteristic of the species.
What connection do all living things have with eachother
All living things share a common connection as they are part of the tree of life or the web of life on Earth. This connection is based on the concept of biological evolution, which explains that all living organisms on our planet have evolved from a common ancestor over billions of years.
All living things, from simple bacteria to complex multicellular organisms, are united by their shared genetic material, the fundamental biochemistry of life, and the presence of cells as the basic structural and functional units. They also exhibit characteristics such as growth, reproduction, adaptation, and response to stimuli.
Additionally, living organisms interact and depend on each other within ecosystems. They form intricate relationships as producers, consumers, and decomposers, participating in nutrient cycles and energy flow. Organisms often rely on each other for resources, such as food, shelter, and symbiotic relationships.
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