What organelle is instrumental in holding the instructions to make proteins and controlling most of the cell
functions?
O nucleus
O ribosome
O endoplasmic reticulum
O mitochondria
Answers
Answer:
nucleus
Explanation:
Related Questions
Kevin says that all components of the natural environment would be protected if all nations had strict laws in place. If this was the case, what is the main reason that international treaties or agreements would still be necessary?
A.
It would make sharing scientific information easier.
B.
Most polluters are large, multinational corporations.
C.
Pollution and wildlife do not respect national borders.
D.
Invasive species originate from around the world.
Answers
C. Pollution and wildlife do not respect national borders. Even with strict laws in place in individual nations, international treaties or agreements are necessary because environmental issues are often transboundary, affecting multiple countries and regions
Which of the following required a protein channel (carrier) to allow molecules to cross the cell membrane (plasma membrane)? (Hint: multiple answers)
A. facilitated diffusion
B. osmosis
C. active transport
D. diffusion
Answers
Answer:
the answer would be c
Explanation:
The process that entails the movement of protein channel (carrier) through cell membrane (plasma membrane) as regards this question is C. active transport
Active transport can be regarded as a process involving the movement of molecules through the cellular membrane using cellular energy. Active transport is utilized by cells for accumulation of needed molecules. These molecules could be glucose as well as amino acids.Therefore, option C is correct.
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is the bird a predator animal or a prey animal?explain your answer
Answers
Answer:
Birds can be both predator animals and prey animals. Some predatory birds, such as eagles, hawks, and owls, hunt and kill other animals for food. Other birds, such as small songbirds, can be prey animals for larger predators like cats and hawks.
What are the 3 functions of a carpel?
Answers
Answer:
stigma, style, and ovary
Explanation:
What are the three types of fossiles and what made them form different
Answers
Three different types of fossils are impression fossils, trace fossils, and replacement fossils.
Impression fossils form when a leaf, shell, skin, or foot. leaves an imprint in soft earth. When the imprint hardens, it forms a fossil in the shape of the original.
Trace fossils They tells about geological records of the activities and behaviors of past life. These fossils are different from body fossils that preserve the actual remains of a body such as shells or bones.
Replacement occurs when the original shell or bone dissolves and then gets replaced by a different mineral . Mostly leave and ferns and dark imprint of fossils .
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Can some one help me answer these 3 questions if I can I will give the first person who answers Brainlylist! Due today
Answers
2. The Coriolis Effect, in combination with an area of high pressure, causes the prevailing winds—the trade winds—to move from east to west on both sides of the equator across this 60-degree "belt." ... The sinking air triggers the calm trade winds and little precipitation, completing the cycle
3.north south direction
Why do we translate the code in mRNA during translation?.
Answers
Answer:
so it can be made into a message to be sent to the tRNA to help pair the nitrogen bases to create a protein
Explanation:
What does the graph in figure 1 illustrate
Answers
Figure 1 is a graph that illustrates the relationship between two variables in a system, as indicated by the direction and shape of the plotted line.
The graph may be used to identify the correlation between variables, the rate of change, and the characteristics of a system.The horizontal axis, or x-axis, is the independent variable, while the vertical axis, or y-axis, is the dependent variable. As the independent variable changes, the dependent variable is affected and changes in a predictable manner. The slope of the line shows the direction and steepness of the relationship between the two variables.
A positive slope indicates that as the independent variable increases, the dependent variable also increases. A negative slope indicates that as the independent variable increases, the dependent variable decreases. A slope of zero indicates that there is no relationship between the two variables.
The shape of the line, whether linear or nonlinear, indicates the rate of change between the two variables. Nonlinear relationships may be curved, such as exponential, logarithmic, or polynomial functions, or they may be stepwise, as in a staircase function. Linear relationships, on the other hand, are typically straight lines with a constant slope.
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If microorganisms penetrate the first line of defense, a second line of _______________ forms defense mechanisms that become operational.
Answers
If microorganisms penetrate the first line of defense, a second line of defense mechanisms that becomes operational.
What is the second line of defense?The second line of defense is a non-specific defense mechanism that takes place in the bloodstream and tissues after the microorganisms penetrate the first line of defense (skin and mucous membranes).
It includes the white blood cells (WBCs), which combat infection by engulfing foreign particles (phagocytosis), breaking down proteins that trigger the immune response, and identifying and destroying cells that have been contaminated by a virus or other pathogens. It is frequently referred to as the "innate immune system," because it is always ready to defend the body from infection, regardless of whether or not it has previously experienced that particular pathogen.
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If microorganisms penetrate the first line of defense, a second line of defense forms defense mechanisms that become operational. The second line of defense is the body's innate immune system. It has a slower response than the first line of defense but is more powerful and specific
The skin serves as a mechanical barrier that prevents the entry of microorganisms and toxic substances into the body. Similarly, mucous membranes found in our respiratory, digestive, and urogenital systems trap microorganisms that enter our bodies. The second line of defense is the body's innate immune system, which provides a more specific and powerful response against pathogens.
The innate immune system includes the inflammatory response and the complement system. When microorganisms penetrate the first line of defense, the body recognizes them as foreign and activates the complement system. This system helps to destroy bacteria and viruses by promoting phagocytosis and creating pores in their membranes.
The innate immune system does not recognize specific pathogens, but it is capable of mounting a more powerful response to a wide range of pathogens. This response is non-specific and cannot provide long-term protection against recurring infections. The innate immune system is a temporary defense mechanism that provides time for the adaptive immune system to develop a more specific response.
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Not a good idea to contribute to the protection of the environment? a. recycle waste products b. buy magazines and newspapers online c. turn off appliances that aren't in use d. water ur garden between 11 and 15
Answers
Buy magazines and newspapers online and water ur garden between 11 and 15 Not a good idea to contribute to the protection of the environment. Thus, option "B and D" is the answer.
How can we reduce pollution?When we carpool to work, that reduces the number of cars on the road which reduces air pollution. Landscaping with native plants means that there is less resource usage because the plants have adapted to the area.
Reducing the waste you have by recycling goods and also maintaining cars will ensure that pollution is reduced.
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How do you kill something which is dead or non living
Answers
Venous pressure ________. is usually the same in veins as in their corresponding arteries is not affected by external factors such as muscle activity is much lower than arterial pressure may be measured directly with a sphygmomanometer and pressure cuff
Answers
Arterial pressure is substantially higher than venous pressure. Option 3 is Correct.
The vascular pressure in a vein or the heart's atria is referred to as venous pressure. With typical readings of 5 mmHg in the right atrium and 8 mmHg in the left atrium, it is significantly lower than arterial pressure. Because the arteries receive blood from the heart after contracting, as well as because of their contractile ability, blood pressure in the arteries is significantly higher than in the veins.
In comparison to veins, arteries have thicker tunica media, smoother muscle fibres, and more elastic tissue. Due to their close proximity to the heart's ventricle, the major arteries (such the aorta) have the highest blood pressure. as the small blood vessel divides. Option 3 is Correct.
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Correct Question:
Venous pressure ________.
1. is usually the same in veins as in their corresponding arteries
2. is not affected by external factors such as muscle activity
3. is much lower than arterial pressure
4. may be measured directly with a sphygmomanometer and pressure cuff
hich of the following statements is not consistent with the intermediate disturbance hypothesis? which of the following statements is not consistent with the intermediate disturbance hypothesis? a high level of disturbance reduces species diversity in a community by disturbing the community so often that slow-colonizing species are excluded. an intermediate level of disturbance can foster greater species diversity in a community by opening up habitats for occupation by less competitive species. a high level of disturbance reduces species diversity in a community by allowing competitively dominant species to exclude less competitive ones. a high level of disturbance reduces species diversity in a community by disturbing the community so often that slow-growing species are excluded. a high level of disturbance reduces species diversity in a community by creating environmental stresses that exceed the tolerances of many species.
Answers
The statement that is not consistent with the intermediate disturbance hypothesis is: "A high level of disturbance reduces species diversity in a community by allowing competitively dominant species to exclude less competitive ones."
The intermediate disturbance hypothesis suggests that species diversity is maximized when there is an intermediate level of disturbance in an ecosystem.
At this level, disturbances create opportunities for less competitive species to establish themselves, while still allowing slow-colonizing and slow-growing species to persist.
A high level of disturbance is not consistent with this hypothesis when it is stated that it allows competitively dominant species to exclude less competitive ones, as this would lead to a decrease in diversity rather than promoting it.
In the context of the intermediate disturbance hypothesis, a high level of disturbance should not result in the dominance of competitively superior species but instead should reduce species diversity by either disturbing the community too often or creating environmental stresses that exceed the tolerances of many species.
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Is sand called sand because its in between the sea and the land?
I'm asking the questions that need to be asked people! :'D
Answers
No, not at all. ... The English word 'sand' comes from Old Dutch/proto-German 'zand', which has nothing to do with either sea OR land, but referred originally to unstable ground, as near rivers.
I hate the English language sometimes, like: "waterfall". But anyways, I hope this helps ^^
Hmmm... I've never thought of that before... nice catch lol
Have a great day :D
This questions has two parts
35 points
Answers
Part A
Answer: (A) Candida Albicans and Saccharomyces Cerevisiae
Explanation: They have the smallest difference in Cytochrome C
Part B
Answer: (B) The two species have high molecular homology
Explanation: Molecular homology means resemblances between species on the molecular level. Since the two species from the answer in Part A have the smallest difference in Cytochrome C it means they have high molecular similarities; this is due to evolving from the same common ancestor.
(A) is not the right answer because the fungi in the table might all look similar but have different or similar genetic blueprints.(C) is not the right answer because fungi can reproduce sexually or asexually, so reproduction cannot help with determining relatedness.(D) is not the right answer because if the two species from the answer in Part A are closely related because they are both fungi, the answer for Part A should be all of the options.
Flowering plants reproduce from seeds.
Which role does an apple play in this process?
A)
Apple trees have two generations in their life cycles. The apple represents the
male gametophyte stage.
B)
An apple is a mature ovary, called a fruit. The function of a fruit is to protect
developing seeds.
C)
When the flowers of an apple tree are pollinated, the petals grow together to form the apple.
D)
An apple is a mature sepal that has grown around the seeds to protect them
from animals.
Answers
Answer: the Answer is b!
Explanation:
Why has it been difficult for scientists to edit specific genes?
Answers
No matter the research, essential genes are crucial for organism to survive. Altering genetic sequence in any way can lead to lethality, therefore, making it essential genes difficult to edit.
Why is it difficult for scientists to edit specific genes?There are many reasons why it has been difficult for scientists to edit specific genes:
Human genome is extremely complex, making it challenging to target specific gene for editing.
Traditional gene editing methods such as restriction enzymes and insertion/deletion can cause unintended mutations in genome.
Gene editing methods that use viral vectors can trigger immune response, which make it difficult to achieve stable and long-lasting gene editing.
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What is Leishmaniasis (visceral) disease called when it occurs in HIV patients?
Answers
Assume you discover a new world on another planet that is full of organisms. what characteristics would you look for to determine that these organisms arose as a result of evolutionary processes?
Answers
Genetic variation, Adaptations, Common ancestry and Fossil evidence are the characteristics that one would look for, to determine that these organisms arose as a result of evolutionary processes.
To determine that the organisms on the new world arose as a result of evolutionary processes, you would look for the following characteristics:
1. Genetic variation: The organisms should have some genetic variation, which would allow for the possibility of natural selection to occur.
2. Adaptations: The organisms should have adaptations that allow them to survive and reproduce in their environment.
3. Common ancestry: The organisms should share common ancestors, indicating that they evolved from a common ancestor.
4. Fossil evidence: There should be fossil evidence of the organisms' ancestors, which would provide further evidence of evolution.
These characteristics are all evidence of evolutionary processes and would indicate that the organisms on the new world arose as a result of evolution.
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Fill in the blanks below to complete the hypothesis for this lab. It should answer the lab question, “What is the effect of molecule size on a molecule’s ability to diffuse across a semipermeable membrane?”
If molecules are small enough, then . . .
because . . .
Answers
Answer: See below
Explanation: If molecules are small enough, then they should have an easier time diffusing across a semipermeable membrane because smaller molecules can physically fit through or in between parts of a membrane that bigger structures may have to be actively transported through.
This is only true, however, if the molecule, membrane, and solvent do not interact because of polarity or proticity, which is not mentioned in the question so therefore should not be relevant.
Answer:
("then"): Molecules will diffuse through the semipermeable membrane
(“because”): they can pass through the membrane’s tiny openings
edge2023
What kind of chemical does saccharomyces cerevisiae ferment to produce alcohol?
Answers
Saccharomyces cerevisiae, commonly known as baker's yeast or brewer's yeast, ferments glucose to produce alcohol, specifically ethanol.
This process, known as alcoholic fermentation, is a metabolic pathway utilized by yeast and some other microorganisms in the absence of oxygen.
During fermentation, the yeast cells break down glucose through a series of enzymatic reactions. One of the key enzymes involved is pyruvate decarboxylase, which converts pyruvate, a product of glucose metabolism, into acetaldehyde. Acetaldehyde is then further reduced by another enzyme called alcohol dehydrogenase, resulting in the formation of ethanol (alcohol) and carbon dioxide.
The ability of Saccharomyces cerevisiae to ferment glucose and produce alcohol is widely utilized in various industries, including baking, brewing, and winemaking. The conversion of sugars into alcohol by yeast is a fundamental process in the production of bread, beer, wine, and other fermented beverages.
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Asthma is... Question 38 options: a) caused by Myobacterium tuberculosis. b) due to an excessive stimulation of smooth muscle in bronchioles. c) an obstructive tumor targeting primarily the terminal bronchioles. d) a collapsed lung resulting from insufficient production of surfactant. e) characterized by fluid buildup in the alveoli
Answers
Answer:
The answer is b) due to an excessive stimulation of smooth muscle in bronchioles.
Charles darwin suggested that atolls begin as coral reefs around volcanic islands. Will Surtsey island-icelands newest volcanic island ever become an atoll. Why or why not?
Answers
Answer:
No.
Explanation:
No, Surtsey island and Iceland newest volcanic island will not become an atoll because these islands have no underground volcanoes. The atolls are only occur when the volcanoes are present underwater and we know that these volcanoes are present on the lands not in the water so there is no possibility of having atolls in these Surtsey and Iceland volcanic islands
A crocodile-like morphology evolved independently in a group of Triassic reptiles called phytosaurs, and later, after phytosaurs were extinct, in true crocodiles. This is an example of: Sympatric speciation. Iterative evolution Evolutionary drift Genetic drift Lamarckian evolution
Answers
The correct answer is iterative evolution. A crocodile-like morphology evolved independently in a group of Triassic reptiles called phytosaurs, and later, after phytosaurs were extinct, in true crocodiles. This is an example of iterative evolution.
Iterative evolution is the development of similar structures or forms independently over time in separate lineages. This is frequently seen in unrelated lineages of organisms that evolve similar features through convergent evolution. The crocodile-like morphology that evolved independently in Triassic reptiles called phytosaurs and later in true crocodiles is an example of iterative evolution as they evolved independently in separate lineages. The ability of the phytosaurs to thrive in an aquatic environment likely contributed to the development of this morphology, which later allowed true crocodiles to similarly thrive.
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According to Darwin’s theory of evolution all species on earth are united by?
Answers
Answer:
A universal common ancestor (UCA).
Explanation:
According to Darwin, all life on Earth evolved from a universal common ancestor; that is, the very first organism on Earth. If you pick any living plant or animal on Earth and trace its lineage back far enough, billions of years ago, you will eventually find the UCA. Every species on Earth is united to every other species through their connection with the UCA.
The UCA itself was probably a single-celled organism of some kind and died about 4.1 billion years ago. But through it, every species, be it human, dog, tree, or mushroom, shares this one ancestor with everyone else.
Species also have what's called a lowest common ancestor with each other, much more recent than the UCA. For example, the LCA between humans and chimpanzees probably lived and died around 4 million years ago.
Which physical products are not produced by the sun during the thermonuclear process in which hydrogen nuclei are combined together in its core?
Answers
Physical products not produced by the sun's thermonuclear process include heavy elements such as gold, platinum, and uranium.
These elements are created through supernova explosions, where the intense pressure and energy cause fusion reactions to occur, resulting in the formation of heavier elements.
Therefore, while the sun is capable of producing lighter elements such as helium and carbon through nuclear fusion, it is not capable of producing the heavier elements that are essential to our daily lives. These elements are formed through a different process that occurs outside of the sun.
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What region of the lymph node contains follicles filled with dividing b cells?.
Answers
The region of the lymph node that contains follicles filled with dividing b cells is cortex.
The lymph nodeThe lymph node is an organ of the lymphatic system which is made up of blind-ended tubes in the spaces between the blood capillaries and tissue cells.
The lymph nodes is the site where lymph is produced, filtered and distributed to the circulation.
There are different parts or regions of the lymph nodes which include:
The cortex: This is the inner part of the lymph nodes which contains mostly dividing B and T lymphocytes.The capsule: This is the outer part of the lymph nodes.Therefore, the region of the lymph node that contains follicles filled with dividing b cells is cortex.
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Which restriction endonucleases would cleave a dna molecule at the given sequences? the complementary dna substrate strand is omitted for clarity.
Answers
The types of restriction endonucleases that would cleave a DNA molecule at the given sequences are type I and type II restriction endonucleases.
What do you mean by Restriction endonucleases?Restriction endonucleases may be defined as a protein constructed by bacteria that cleaves DNA at specific sites along the molecule.
Among the type I and type II restriction endonucleases, type II restriction endonuclease cuts the DNA molecules more efficiently and is widely used for the same procedure as compared to type I restriction endonucleases.
Some of the examples of type II restriction endonucleases include EcoRI, HindIII, BamHI, etc.
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identify one hormone present in a female that is involved in regulating the reproductive cycle?
Answers
Answer: The hormones controlling the female reproductive system include gonadotropin-releasing hormone (GnRH), follicle-stimulating hormone (FSH) and leutenizing hormone (LH), all of which are produced in the brain; oestrogen and progesterone produced by the ovaries and the corpus luteum; and human chorionic gonadotropin (HCG
Use osmosis to explain what a turgid cell is.
Answers
Answer:
A turgid cell is a plant cell that has been put in a hypotonic solution. The cell takes up water by osmosis and swells.
Explanation: