Name two structures are found in a plant cell and not in an animal cell
Read the description of evolution by natural selection in this section and describe the role that the environment plays in the theory
The environment plays a pivotal role in evolution by natural selection by determining which traits are advantageous and promoting survival and reproduction of organisms with these traits, thus leading to a diversity of species.
Explanation:The environment has a crucial role in the theory of evolution by natural selection. Firstly, the environment poses challenges and pressures, such as availability of resources and changing conditions, leading to a struggle for survival known as the 'survival of the fittest'. Organisms with advantageous traits or characteristics, better suited to their environment, have a better chance of surviving and reproducing, passing on these advantageous genes to their offspring.
On the other hand, the environment can also vary and change, meaning what were once considered unfavorable traits can become favorable in the new environment. As such, organisms' genotype and phenotype interact with their environment, and those with the most favorable traits will survive and reproduce more.
Therefore, the environment plays an influential role in the entire process, determining which traits are advantageous and leading to a biodiversity of species through the mechanism of natural selection.
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Little help please...? ;-;
Which organelle, that looks like a stack of pancakes, packages and distributes molecules made in the ER?
mitochondria
ribosomes
chloroplasts
Golgi apparatus
The answer is Golgi apparatus
What molecule is largely responsible for changes in the volume of a cell?
Sheela wants to make a computer model of a land ecosystem. Part of her model simulates the chemical processes of photosynthesis that involve the creation of sugars. Which chemical processes are these? A the light-dependent reactions. B the light-independent reactions. C the daylight reactions. D the reactions in the mitochondria.
The correct answer is option A, that is, the light-dependent reactions.
The light-dependent reactions are accountable for the generation of glucose molecules, with the use of water and carbon dioxide along with sunlight. In the process, the glucose is dissociated down by the process of respiration, in order to generate ATP in mitochondria.
The light-dependent reactions utilize light energy to produce two molecules required for the next level of photosynthesis, that is, the energy storing molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions occur in the thylakoid membranes of organelles known as chloroplasts.
Answer:
The first answer is correct which is, A) The light-dependent reactions
Explanation:
When cleaning your firearm, why should you avoid dipping a cleaning brush directly into the cleaning solution container?
In cleaning the firearm, it is best to avoid dipping the cleaning brush directly to the cleaning solution container because if it is directly soaked in the cleaning solution, it will likely cause the supply of cleaning materials or solutions to be contaminated.
Explanation why dipping a cleaning brush into the cleaning solution container when cleaning a firearm should be avoided.
When cleaning your firearm, you should avoid dipping a cleaning brush directly into the cleaning solution container because it can contaminate the entire solution with residue from the firearm.
This contamination can potentially affect the cleaning efficiency and even damage the firearm during the cleaning process.
Genetic drift is _____. hints genetic drift is _____. adaptive more likely to have an impact on small populations an important microevolutionary mechanism in large populations the mechanism by which new alleles originate
Genetic drift is an important microevolutionary mechanism in small populations, resulting in random fluctuations in allele frequencies due to chance events.
Explanation:Genetic drift is an important microevolutionary mechanism in small populations. It refers to the random fluctuations in allele frequencies that occur in small populations due to chance events. Unlike natural selection, genetic drift is not adaptive and can result in the loss of genetic diversity.
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Jan noticed that when she put a tomato in water, it sank. When she put an apple in water, it floated. Why did the tomato sink while the apple floated?
Which category of cells prokaryotic or eukaryotic is your body composed of?
The human body is composed of eukaryotic cells, which have a membrane-bound nucleus and differ from the prokaryotic cells of single-celled organisms like bacteria and archaea.
Explanation:The human body is composed of eukaryotic cells. This places us in the company of animals, plants, fungi, and protists—all of which are also composed of eukaryotic cells. Eukaryotic cells are characterized by having a nucleus that is bound by a membrane, as well as other membrane-bound organelles. In contrast to eukaryotic cells, prokaryotic cells—such as those belonging to the domains Bacteria and Archaea—are generally single-celled organisms without a nucleus.
Biologists differentiate cells into these two categories based on structural and genetic differences. This distinction is important for understanding the complexity of multicellular organisms like ourselves, and also helps in studying the diverse forms of life on Earth. The discovery of the three domains of life (Bacteria, Archaea, and Eukarya) was a significant development in the field of biology, revealing that prokaryotes are more nuanced and diverse than previously thought.
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Multicellular organisms must be protected from the external environment. Because of this, cells of even the simplest multicellular organisms are arranged to form an external barrier of
Hey there!!
Your answer is epithelial tissue. This tissue is the one that does it part to protect all of the other cells around too or form the external barrier.
Hope this helps!!
Sincerely,
Ans
During what kinds of processes are atoms and molecules rearranged?
A.chemical
B. physical
A glucose molecule could be used as an example of potential energy, why is this true? The chemical energy stored in the glucose molecule is available to do work The light energy is stored in the glucose molecule The glucose molecule is actively involved in energy production The glucose molecule participates in all cell activities
Ans. 'The chemical energy stored in the glucose molecule is available to do work.'
Glucose molecule is considered as primary fuel of the body as it provides energy for all cellular activities.
All organisms generate energy by breakdown of glucose molecules through the process of cellular respiration, in which chemical energy of glucose is converted ATP molecules. The ATP molecules release energy during hydrolysis and provide energy to do work. Hence, glucose can be used as an example of potential energy.
The nursing student completes a literature review on evidence-based practice (ebp). which action indicates that the student understands ebp?
True or false? mendel's contribution to genetics was the discovery of dna.
Mendel's contribution to genetics was the discovery of alleles which are the different forms of a gene present in an organism and how these genes are transferred from parents to offspring. Thus, the given statement is false.
What is Mendel's law?
Mendel did his experimental work on the garden pea plants (Pisum sativum). He discovered the laws of inheritance. He observed that genes are present in pairs and are inherited as distinct units and one gene is transferred from each parent. He called alleles as dominant and recessive. Dominant alleles show their presence in each generation whereas recessive traits are found to skip generations.
Mendel observed the segregation of genes in a monohybrid cross and the appearance in the offspring as dominant or recessive traits in different generations. He also gave the law of independent assortment of characters where he told that characters are inherited independent of each other in all the generations.
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To maintain turgor pressure, cells in both the leaves and stems of most non-woody or herbaceous plants contain A) chloroplasts. B) starch granules. C) many mitochondria. D) a large central vacuole.
The correct answer is (d) A large central vacuole.
Plant cell has very large central vacuole that helps in maintaining the turgor pressure of the cell and it also helps in maintaining the stability of plant cell. The maximum amount of water is absorbed in the vacuole and helps to keep the cell erect. In mature plants the vacuole tend to very large and provides mechanical support to the cell. It also helps in waste disposal, protection, growth and storage of plant materials.
In a fish population in a shallow stream, the genotypic frequencies of yellowish-brown fish and greenish-brown fish changed significantly after a flash flood randomly swept away individuals from that stream. this change in genotypic frequency is most likely attributable to:
What means that the cell membrane allows some, but not all molecules to cross?
The function of mitochondria and chloroplasts is related to energy. In what way does their function differ?
Mitochondria produce energy in prokaryotic cells, while chloroplasts produce energy in eukaryotic cells.
Mitochondria produce energy from food, while chloroplasts produce food from the Sun’s energy.
In plants, mitochondria provide energy in non-green cells, while chloroplasts provide energy to cells in parts of the plant that are green.
Mitochondria provide energy in the night, while chloroplasts provide energy in the day.
Mitochondria provide energy from food synthesized by organelles other than chloroplasts, while chloroplasts provide energy through photosynthesis using the Sun’s energy.
which one would be the answer please help and thank you.
The Mitochondria gets it energy from food. While the chloroplast get there food from the suns energy through the process of photosynthesis. Chloroplast are also what make the plant leaves green.
Answer: The correct answer is -
Mitochondria produce energy from food, while chloroplasts produce food from the Sun’s energy.
Mitochondria is a specialised membrane bound organelle that is present in the eukaryotes (such as plant and animals) and it is considered as the power house of the cells. It helps in the generation of large amount of energy in the form of ATP (adenosine triphosphate) through cellular respiration (that depicts complete oxidation of food, such as glucose).
Chloroplast is a membrane bound organelle, which is present in the photosynthetic organsisms such as green plants and algae. It is the site for photosynthesis, which is a process of formation of food using sunlight in the presence of carbon dioxide and water.
Thus, second option is the right answer.
If excess fertilizer is placed around the root of a tomato plant, the leaves of the plant will shrivel and turn brown. explain this phenomenon in terms of tonicity.
When excess fertilizer is placed around the root of a tomato plant, the tonicity of the solution that the plant cells are bathed in is affected. If the fertilizer solution is hypertonic, the plant cells will lose water through osmosis, causing the leaves to shrivel and turn brown. If the fertilizer solution is hypotonic, water enters the plant cells, causing them to become stiff and turgid.
Explanation:When excess fertilizer is placed around the root of a tomato plant, the tonicity of the solution that the plant cells are bathed in is affected. If the fertilizer solution is hypertonic, the plant cells will lose water through osmosis, causing the leaves to shrivel and turn brown. This is because the water leaves the plant cells, leading to a loss of turgor pressure needed to keep the leaves and stems upright. On the other hand, if the fertilizer solution is hypotonic, water enters the plant cells, resulting in higher osmotic pressure and turgor pressure, causing the cells to become stiff and turgid.
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What are the structures that are rod shaped and are known as the powerhouses of the cell?
The flexor hallucis longus muscle originates on the __________.
The flexor hallucis longus muscle originates from the deep posterior compartment of the leg, particularly the fibula and interosseous membrane.
The flexor hallucis longus muscle, which is responsible for flexing the big toe, originates from the deep posterior compartment of the leg. Specifically, it arises from the fibula and the lower two-thirds of the posterior surface of the body of the fibula, as well as the interosseous membrane which lies between the tibia and fibula. This muscle plays a critical role in the plantar flexion of the foot at the ankle joint and aids in the stabilization of the plantar arch of the foot during activities like walking.
What variables(s) influence(s) whether a nonpolar molecule can move across a membrane by passive diffusion?
A factor of which biotic and abiotic factors whos supply determines the population size of a given species
______ tend to have stronger effects of detachment or aggression than alcohol does.
Survey at least 20 people to find out what traits they have for each of the features below. Tally the numbers for each trait and record those totals in each column.
1. Do you have attached or detached earlobes?
2. Do you have hair present between second and third knuckle of fingers or No hair present between second and third knuckle of fingers?
3. Do you have curly hair or straight hair?
4. Do you have a cleft chin or no cleft chin?
(All help is really wanted! Thanks! :))
The student's question is about conducting a survey on human genetic traits. As a tutor, I can't perform the survey, but I provided instructions on how to set up the survey, record the data, and analyze the results. The analysis would identify the most common traits in the sample group.
Explanation:This question relates to human genetic traits and seems to be a task designed as statistical analysis or survey-based research. As a Brainly tutor, I cannot actually perform the survey for you, since this is your school assignment. However, I can provide you a guidance on how to conduct the survey effectively.
To begin with, you should prepare a survey sheet to record the answers for each person you survey. You can create 4 columns with the name of each trait (attached/detached earlobes, hair between knuckles, curly/straight hair, cleft/no cleft chin). Then underneath each column, you should have two rows—one for each possible outcome of the feature (ex. attached or detached). As you survey people, make a tally under the appropriate category. Make sure you ask permission from the people you are surveying, and reassure them that this is for educational purposes only and their information will be kept anonymous.
After you have surveyed at least 20 people, count the tallies in each category and record those totals. These are the results of your survey; the genetic trait that has the most tallies is the most common among your sample group. You can also calculate the percentage of each trait by dividing the number of tallies for that trait by the total number of people you surveyed, and then multiplying by 100.
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What will happen to a population of predators if there is a sudden, temporary increase in the number of prey?
The population of predators will be uniform with no change.
The population of predators will increase first and then decrease slowly.
The population of predators will increase continuously.
The population of predators will increase first and then decrease slowly.
A patient has been taking fluoxetine (prozac) for 11 months and reports feeling cured of depression. the nurse learns that the patient is sleeping well, participates in usual activities, and feels upbeat and energetic most of the time. the patient's weight has returned to normal. what will the nurse tell this patient?
Which of these bones aligns with the medial, intermediate, and lateral cuneiforms to form the four distal tarsals?
Your patient's urinary output is 50 ml/24 hours, which is essentially no output. how would you document this finding?
What abdominopelvic region is the liver in?
The liver is primarily located in the right upper quadrant of the abdominopelvic cavity, mainly within the right hypochondriac region and extending into the epigastric region.
Explanation:The liver is a vital organ located in the upper right part of the abdomen, primarily falling within the right upper quadrant of the abdominopelvic quadrants. It is situated just below the diaphragm, to the right of the stomach, and is protected by the surrounding ribs.
When considering the nine abdominopelvic regions, the liver is primarily in the right hypochondriac region, but it also extends into the epigastric region due to its size and the presence of multiple lobes. The location of the liver is significant for healthcare providers to communicate clearly about abdominal issues, such as the location of pain or the presence of masses.