Most scientific questions are based on
The sensory registers ______.
a. are measures of retention
b. retain past information
c. control our attention span x
d. receive sensory information from the external world
What did rutherford gold foil experiment suggest about the structure of an atom?
Is the cell membrane of a cell with high mass or the cell membrane of a cell with low mass better able to feed the cytoplasm of the cell key?
The cell membrane of a cell with high mass is better able to feed the cytoplasm of the cell key.
The ability of a cell membrane to facilitate the transport of nutrients into the cytoplasm is not directly related to the mass of the cell but rather to the properties of the cell membrane itself, such as its permeability, the presence of transport proteins, and the surface area-to-volume ratio.
For a cell with high mass, it typically has a larger surface area, which means more cell membrane is available for the diffusion of nutrients and exchange with the environment.
This larger surface area relative to the volume of the cell allows for more efficient transport of substances in and out of the cell. In contrast, as cells grow larger, if their surface area does not increase proportionally, they may face challenges in transporting enough nutrients to support their volume, leading to a lower surface area-to-volume ratio.
However, cells with high mass often have specialized structures such as infoldings or extensions of the cell membrane (like microvilli in intestinal cells), or they may employ active transport mechanisms to move nutrients against a concentration gradient, ensuring that the cytoplasm is adequately nourished.
In summary, while the mass of a cell does not directly determine the efficiency of nutrient transport, cells with high mass typically have adaptations that allow their cell membranes to effectively feed the cytoplasm. These adaptations can include an increased surface area, specialized membrane structures, and active transport mechanisms.
According to the climate zone map, a desert may be either hot or cold, but is always characterized by dry conditions. true or false
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Land used for agriculture adds fertilizer byproducts to water runoff. These byproducts include sulfates, phosphates, and nitrogen. As agriculture expands south of Lake Okeechobee, Florida, predict the impact on the biodiversity in the Everglades National Park, which is marsh and swamplands.
These compounds will combine into larger molecules as they interact in the nitrogen cycle and become food for fish and other animals, increasing biodiversity.
The water cycle will remove excess fertilizer naturally through evaporation, with no impact on biodiversity.
Nitrogenous compounds will be recycled into carbon compounds to create new organisms and increase biodiversity.
Higher amounts of nitrogenous compounds will increase algal blooms, leading to less available oxygen in the water, and decrease biodiversity.
Answer:
its D
Explanation:
if you dont want to read all that^
fertility usually resumes within _____ after contraceptive use stops.
A client comes to the mental health clinic with the complaint of a progressing inability to be in enclosed spaces. the practitioner makes the diagnosis of claustrophobia and prescribes desensitization therapy. the nurse recalls that desensitization therapy is used successfully with clients experiencing phobias because it is focused on:
Biology what is the difference between artificial selection and natural selection? artificial selection acts on morphological characteristics, whereas natural selection acts on life history traits. artificial selection is directional, whereas natural selection is stabilizing. artificial selection requires human intervention, whereas natural selection does not require human intervention. artificial selection operates at the genetic level, whereas natural selection operates on the whole organism. artificial selection leads to temporary changes, whereas natural selection leads to permanent changes.
Final answer:
Artificial selection involves human intervention to select for desirable traits in organisms, often used in domestication and agriculture, while natural selection is the process by which the environment selects for traits that improve survival and reproduction, leading to adaptive evolution.
Explanation:
The difference between artificial selection and natural selection lies in the mechanisms that drive the evolution of species. Artificial selection is when humans intervene and select which individuals breed based on desirable traits. This practice is common in agriculture and the domestication of animals, where farmers or breeders select plants and animals to pass specific traits to the next generation. An example is the breeding of cows that produce more milk. On the other hand, natural selection is a process where the environment naturally determines which individuals are more suited to survive and reproduce. Traits that confer an advantage increase in frequency within a population, while disadvantageous traits are selected against, a process called adaptive evolution. Charles Darwin realized that artificial selection was a significant clue to understanding natural evolution, as they both lead to populations that are better adapted over time.
What type of cell did Hooke study?
Robert Hooke studied thin slices of cork and described the microscopic, box-like structures he observed as 'cells,' a term he introduced in 1665 in his publication 'Micrographia.'
In 1665, Robert Hooke became the first cytologist to discover and describe cells. Using a microscope to examine thin slices of cork, Hooke observed and sketched structures that resembled a honeycomb pattern, which consisted of repeated circular or square units.
He coined the term 'cell' for these structures as they reminded him of the small rooms, or 'cells,' that monks inhabited. The name 'cell' was derived from the Latin term cella, meaning 'small room.' This ground-breaking observation was documented in his notable publication, Micrographia.
Hooke's work laid the foundation for the field of cell biology as we know it. His illustration of cork cells as they appeared under his simple light microscope was a pioneering contribution to the understanding of plant cells and the structure of living organisms.
What is osmosis and how is osmosis different from diffusion? if ion transport requires atp, what type of transport is that and give an example?
What do you call the phenomenon when you have a different concentration of materials on the inside and the outside of the cell?
What steps might a scientist take when he or she tests a hypothesis
How does the brain skeleton and heart work together
Temporal summation most likely occurs with:
What part of a neuron receives signals and sends a message to the cell body? what part of a neuron receives signals and sends a message to the cell body? axon terminal axon dendrite axon hillock?
During the water cycle, water evaporates from plants through a process called transpiration. which of these is a similar process during the carbon cycle?
When individual cellular slime mold amoebas are stressed (like near starvation), all the individuals in that immediate area aggregate into a large moving mass of cells called a:?
The term used when all individuals in an immediate area aggregate into a large moving mass of cells is called a slug. This is often present in aggregation as this is a way of having to increase its chance of having to provide and find food.
Which of these substances is an enzyme: oxidase triglyceride nucleotide omega-3 fatty acid glucose?
what is the difference between a cell wall and a cell membrane
Which organelle often takes up much of the volume of a plant cell
The central vacuole is the organelle that often takes up the majority of the volume in a plant cell. It serves several functions such as storing water, disposing waste, and aiding in cellular growth.
Explanation:The organelle that often takes up much of the volume of a plant cell is the central vacuole. In a plant cell, the central vacuole serves multiple functions, most notably, it stores water and helps the plant maintain its shape. During periods of drought, this vacuole can help the plant survive by preserving water within its cell walls. It's also involved in waste disposal, storage of nutrients and molecules, and cellular growth. The central vacuole can occupy up to 80% of the volume of some plant cells, making it the largest organelle in these cells.
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Which of the raw materials used in photosynthesis has been linked to global warming?
A. water
B. oxygen
C. carbon dioxide
D. sugar
Answer: Carbon dioxide
Explanation: The carbon dioxide can be defined as one of the raw materials that is the main contributor of the global warming.
The carbon dioxide absorbs the heat present in the environment that helps to maintain an optimum temperature on earth for survival.
This carbon dioxide is also used by the plants along with water and sunlight to perform the process of photosynthesis.
The acacia tree provides a habitat and protection for ants. This is considered its _____.
biome
ecological niche
ecosystem
biotic factor
Answer: ecological niche
Explanation:
An ecological niche can be define as the functional role that an organism plays in an ecosystem during the coarse of it's life. Like, the type of food chosen for eating, type of habitat chosen, season for breeding, predator- prey relationship, harm and benefit it provides to other species and others.
The acacia tree provides a habitat and protection to the ants these are the functional roles the acacia tree plays in an ecosystem. Therefore, this defines the ecological niche of the acacia tree in an ecosystem.
Personal characteristics and skills are fundamental in orm, how do they support the tcrm process?
Personal characteristics and skills are integral to the Total Customer Relationship Management (TCRM) process. They enhance customer engagement and service, especially when matched properly to job roles through Candidate Analysis and Testing. This includes personality, IQ, integrity, and physical tests.
Explanation:Personal characteristics and skills play a crucial role in Total Customer Relationship Management (TCRM) process. TCRM focuses on understanding customer needs and preferences to offer utmost satisfaction. Personal attributes such as empathetic understanding, problem-solving skills, and excellent communication can greatly enhance this process.
Candidate Analysis and Testing is a vital component of this. Candidates for customer relationship roles are evaluated based on their knowledge, skills, and other abilities. Personality tests are often used to identify the personality characteristics that would best fit the job. For instance, a high rating of agreeableness might improve performance in a customer support position. Nevertheless, the correlation between personality characteristics and job performance predictions isn't always straightforward. Thus, using personality tests should always be paired with verified assessments that pinpoint which test scores correlate with good performance.
Other tests like IQ tests, integrity tests, and physical tests (drug tests or physical fitness tests) may be given to candidates to ensure they meet all job requirements. In conclusion, personal characteristics and skills significantly support the TCRM process by facilitating more effective customer engagement and service.
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Which immune cells normally reside in the tissue?
a. natural killer cells
b. dendritic cells*
c. macrophages
d. neutrophils?
The absence of which organelle would limit the energy production in an animal cell
Which of the following are NOT common invertebrates with exoskeletons?
A) Anemone
B) Crustaceans
C) Insects
D) Spiders
Final answer:
From the given options, anemones (A) are the organisms that do not commonly have exoskeletons. Crustaceans, insects, and spiders are all invertebrates known for having exoskeletons.
Explanation:
The question asks us to identify which of the listed organisms do not commonly have exoskeletons. An exoskeleton is a hard covering or shell that provides benefits to the animal, such as protection from predators and water loss, and attachment points for muscles. This characteristic is often found in various invertebrates, notably within the group named arthropods, which includes insects, spiders, scorpions, horseshoe crabs, centipedes, and crustaceans. After reviewing the options given:
B) Crustaceans - They are known to have exoskeletons.C) Insects - This group is well-known for its exoskeletons.D) Spiders - As arachnids, they also possess an exoskeleton.A) Anemone - Anemones are cnidarians, not arthropods, and they do not have an exoskeleton. Instead, they may have a simple hydrostatic skeleton or no skeleton at all.Given the information, the correct answer is A) Anemone, which is the organism not commonly associated with an exoskeleton.
The visible spectrum of light that humans see is merely a narrow portion of the larger spectrum of electromagnetic radiation. True or False
Answer;
The above statement is true
The visible spectrum of light that humans see is merely a narrow portion of the larger spectrum of electromagnetic radiation.
Explanation;
The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. The sun, earth, and other bodies radiate electromagnetic energy of varying wavelengths. Electromagnetic energy passes through space at the speed of light in the form of sinusoidal waves.
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light.
Both cystic fibrosis and chronic bronchitis cause cells of the respiratory system to hypersecrete mucus. the excessive mucus makes gas exchange more difficult and allows bacteria to thrive, often causing secondary infections. what type(s) of cells in the lungs are responsible for extra mucus production?
Answer: Goblet cells
There are two main areas in the lungs that secrete mucus. From the trachea to the major bronchi ciliated cells and goblet cells are present in the epithelium cells. The surface of the epithelium cells are coated by a mucus layer of viscos elastic gel which acts as a protective barrier and is mobilized by ciliary movement. Mucins are secreted by goblin cells are a major component of the mucus. Mucus is composed of water carbohydrates proteins and lipids
Cystic fibrosis and chronic bronchitis both are a chronic obstructive pulmonary disease. These disorders are characterized by increasing breathlessness Goblet cells in the lungs are responsible for the extra production of mucus. It plays an essential role in the protection of the mucous membrane.
Further Explanation:
Goblet cells lie in the epithelium lining of the airways that conducts respiration. The vital function of cell is to produce mucus which provides protection to the epithelium by covering it with gel like substance. The mucus produced by these cells is comprises from mucin and inorganic salt. Mucins are the glycosylated protein. They are found in the electrolyte solution.
Mucus is secreted by irritating stimuli which is produced by exocytoses process and helps in the determination of the efficiency of entrapment and transportation of inhaled irritants, particles as well as microorganisms. Mucin is found in the intracellular granules of the goblet cells.
Goblet cells secrete mucus in response to several stimuli such as proteinases, irritant gases, inflammatory mediators, and reactive oxygen species.
In normal conditions, the goblet cells tend to proliferate and differentiate into ciliated cells and help in the maintenance of airway epithelial cell population. T cell mediated immunity is also modifies by goblet cell secretion.
Learn More:
Learn more about effects of vigorous exercise on cardiorespiratory system https://brainly.com/question/1209683 Learn more about the structure of epithelium and connective tissue https://brainly.com/question/4557690 Learn more about secondary function of the lymphatic system https://brainly.com/question/2909254
Answer Details:
Grade: Senior School
Subject: Biology
Chapter: Respiration and breathing disorders
Keywords:
Lungs, respiration, goblet cells, ciliated cells, oxygen, carbon dioxide, stimuli, mucus, epithelial cells, gglycosylated, electrolyte, exocytoses, immunity.
A __________ would be more likely to have well-developed slow twitch muscle fibers, while a ____________ would be more likely to have fast twitch muscle fibers.
A. marathon runner; weight lifter
B. weight lifter; gymnast
C. gymnast; long-distance swimmer
D. long-distance swimmer; marathon runner
A marathon runner would be more likely to have well-developed slow twitch muscle fibers, while a weight lifter would be more likely to have fast twitch muscle fibers. So, the correct option is A.
What are fast and slow twitch muscle fibers?Skeletal muscle consists of two different types of muscle fibers: fast and slow twitch. The contraction speed and endurance of fast and slow smooth muscle fibers differ from each other. Fast twitch fibers are employed for short, strong bursts of exercise such as weightlifting or sprinting, but they tire easily.
Slow-twitch fibers are useful for endurance sports such as long-distance running and cycling because they can sustain contraction for extended periods of time while contracting more slowly and with less force. The ratio of fast and slow twitch muscle fibers can affect a person's athletic performance in many sports.
Therefore, the correct option is A.
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Final answer:
The correct answer is A. marathon runner; weight lifter, with marathon runners having more slow twitch fibers for endurance and weight lifters having more fast twitch fibers for strength.
Explanation:
A marathon runner would be more likely to have well-developed slow twitch muscle fibers, while a weight lifter would be more likely to have fast twitch muscle fibers. The correct answer to the question is A. marathon runner; weight lifter.
Slow twitch muscle fibers are more efficient at using oxygen to generate more fuel for continuous, extended muscle contractions over a long time. They are abundant in marathon runners, who participate in endurance sports, because these fibers help sustain aerobic activity and increase endurance.
Fast twitch muscle fibers, on the other hand, are better at generating short bursts of strength or speed than slow twitch fibers but fatigue more quickly. Weight lifters rely on these fibers to perform movements that require power and strength, such as lifting heavy weights. Evidence suggests that athletes involved in power activities like weight lifting have a higher proportion of fast twitch fibers.