Which describes the cells of a wilted plant? The central vacuoles contain little water, The plasmodesmata are closed, The chloroplasts contain little water, The walls have lost their shape
The central vacuoles contain little water
Which of the following would describe Lamarck’s ideas about evolution? Horses and zebras are similar. They have a common ancestor.
A mouse loses its tail in a fight. Its offspring will not have tails.
Wolves eat most of the rabbits in a field. A few smart rabbits find hiding places. They survive and reproduce.
Answer:
A mouse loses its tail in a fight. Its offspring will not have tails.
Compare the fate of pyruvate in alcohol fermentation and in lactic acid fermentation
Answer:
Fate of pyruvate in alcohol fermentation:
Alcoholic fermentation may be defined as a type of metabolic pathway in which occurs generally in the yeast and microorganism. This process occurs in the absence of oxygen. The end products are ethanol, carbon dioxide and ATP from the pyruvate molecule.
Fate of pyruvate in lactic acid fermentation:
Lactic acid fermentation may be defined as the metabolic pathway that generally occurs in the muscle cells. This process occurs in the limited supply of oxygen. The end products are lactic acids and ATP from the pyruvate molecule.
Crenation (shrinking) is likely to occur in blood cells immersed in ________.
a.a hypotonic solution
b.blood plasma
c.a hypertonic solution
Crenation (shrinking) is likely to occur in blood cells immersed in C) a hypertonic solution.
In a hypertonic solution, the concentration of solutes outside the blood cells is higher than inside the cells. As a result, water molecules tend to move out of the cells through osmosis, leading to a loss of water and the subsequent shrinkage of the cells.
This can occur when blood cells are exposed to a solution with a higher salt concentration or other solutes. Conversely, in a hypotonic solution where the concentration of solutes outside the cells is lower, water molecules will move into the cells, causing them to swell and potentially burst. In blood plasma, which is isotonic to blood cells, there is no net movement of water, and the cells maintain their normal shape and size.
Therefore, the correct answer is C) a hypertonic solution.
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Which are characteristics of medusae?
​how do sodium and potassium travel into and out of cells? ​antidiuretic hormone transports potassium and prodiuretic hormone carries sodium. ​specific transport proteins in the blood deliver the minerals to the cell cytoplasm. ​the balance of insulin and glucagon determines the movement of these minerals into and out of cells. ​transport proteins within the cell membrane pick up and release the minerals across the membrane. a negative feedback loop uses blood glucose levels for transfer.​
Which of the three types of viruses shown above would you expect to include glycoproteins?
A patient with heart failure reports awakening intermittently with shortness of breath. which terms appropriately describes this clinical manifestation?
Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) _____________ .
In a dialysis machine, wastes are removed from blood plasma by the process of
The answer is diffusion. Since the patient’s blood is high is waste products such as urea, the waste products diffuse into the dialyzing solution used in the dialysis machine. To remove excess water and sodium ions from the blood, however, the dialysis machine utilizes ultrafiltration process. This is achieved by lowering the hydrostatic pressure of the dialyzing solution against that of the patient's blood plasma.
Suppose that a brand of gum says on its package "New and improved formula helps prevent cavities." Which of the following is an objective, factual, verifiable claim made by that sentence?
A. Something about the gum has recently changed.
B. The gum prevents cavities.
C. The gum is now better than it used to be.
D. all of these
Answer is A.
Final answer:
The claim that the gum's formula has changed is objective and can be verified. Proper scientific studies, with control and experimental groups, are needed to confirm causation in medical claims like cavity prevention.
Explanation:
The objective, factual, verifiable claim made by the sentence "New and improved formula helps prevent cavities" is that something about the gum has recently changed, which aligns with answer choice A. This claim asserts a change but does not verify the effectiveness of the gum in preventing cavities without scientific evidence. Scientific studies, particularly in pharmaceutical and medical contexts, are conducted under strict control conditions to establish causal relationships. To determine causation, criteria such as correlation, time ordering, and the absence of spurious correlations must be met. A hypothetical controlled experiment showing a 27 percent improvement in a group using an experimental gum treatment would be compelling evidence for the gum's efficacy in cavity prevention.
If we put a plant and animal cell into a solution that contains no solutes at all , the solution is______
Answer choices:
Isotonic, hypertonic, or hypotonic)
Match the stimulus example to the type of sensory receptor. 1. chemoreceptor 2. photoreceptor 3. mechanoreceptor 4. nociceptor 5. thermoreceptor
Final answer:
To match the stimulus example to the type of sensory receptor, chemoreceptors detect chemical stimuli like taste or smell, photoreceptors are sensitive to light, mechanoreceptors respond to mechanical pressures, nociceptors detect pain or tissue damage, and thermoreceptors are sensitive to temperature changes.
Explanation:
To match the stimulus example to the type of sensory receptor, we need to understand the specific stimuli each receptor type is responsive to. Here's a clear matching based on their functions:
Chemoreceptor: This type of receptor interprets chemical stimuli, such as an object's taste or smell. It is involved in detecting chemicals in our internal and external environments, playing a crucial role in the senses of taste and smell.Photoreceptor: These receptors are sensitive to light. They are located in the retina of the eye and allow us to perceive visual stimuli, enabling the sense of sight.Mechanoreceptor: These receptors are sensitive to mechanical pressures or changes, such as touch, pressure, vibration, stretch, and sound. They are involved in the sense of touch and hearing, as well as in detecting body position and movement.Nociceptor: Nociceptors are pain receptors that detect harmful stimuli or signs of tissue damage. They are vital for the sensation of pain, informing the body of potential injury.Thermoreceptor: Thermoreceptors detect changes in temperature. They are sensitive to temperatures above or below the body's normal temperature, playing a key role in the sensation of warmth or cold.All the different populations living in the same habitat or ecosystem make up __________.
biodiversity
ecosystem diversity
genetic diversity
species diversity
All the different populations living in the same habitat or ecosystem make up species diversity.
What do you mean by species diversity?
Species diversity is the number of different species that are represented in a given community. The effective number of species refers to the number of equally abundant species needed to obtain the same mean proportional species abundance as that observed in the dataset of interest.
Moreover, it is defined as the number of different species present in an ecosystem and relative abundance of each of those species.” Diversity is greatest when all the species present are equally abundant in the area.
Therefore, many factors affect small-scale species richness, including geographic (e.g. species pool, dispersal), biotic (e.g. competition, predation, facilitation) and abiotic (e.g. resource availability, environmental heterogeneity, disturbance frequency and intensity).
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The rules that govern _____ describe the sound sequences that can occur in a language
Final answer:
The rules that govern phonological sequences in a language determine which sound combinations are permissible. These phonological rules reflect the unique characteristics of a language's phonemes and syntax, contributing to the language's structure and the formation of meaningful communication.
Explanation:
The rules that govern phonological sequences describe the sound sequences that can occur in a language. These rules are a part of descriptive linguistics, which encompasses the study of how sounds, or phonemes, are combined, and how morphemes are used to create words (morphology), among other aspects. Syntax, as another major branch of descriptive linguistics, governs how words should be combined to form phrases and sentences, ensuring meaningful communication. In every language, there are phonological rules that determine how phonemes are produced and perceived. This phonological system is distinct for each language, allowing for an infinite variety of expressions within the constraints of its grammar.
For example, in English, we have rules that prevent certain consonant clusters from occurring at the beginning of words, which is why 'trlaqtoef' or 'aoipw' don't work as English words, while 'flort' could potentially be an English word, as it aligns with the phonological rules of English.
Unlike the communication systems of other species, which are closed and limited to specific contexts, human language is open-ended, allowing us to express an infinite number of ideas. Each language has its unique set of rules guiding the use of phonemes, but these rules are not arbitrary and can often be found in multiple languages.
What part of the milky way probably contains a supermassive black hole
A) The halo
B) The disk
C) The nucleus
D) An open cluster
The genetic coding or expression that determines our dna and messaging for cells is
The patient is scheduled to have an eeg to confirm the presence of a sleep disorder. the patient asks the nurse to describe stage iv nrem sleep. what is the best response by the nurse?
What do you think algae offer that the fungi can’t do?
Algae are autotroph as they contain chloroplasts and carry out photosynthesis. During photosynthesis they make carbohydrate. Hence, they are producers. Whereas, Fungi do not have chloroplast. They are saprophytes, depends on death and decaying matter for food. So, fungi are the decomposers of the ecosystem.
Certain environments can lead to an increased risk of developing certain diseases.
true or false
Answer:
True
Explanation:
Certain environmental conditions increase the occurrence of diseases. A polluted environment in terms of air pollution poses risk of developing respiratory disease such as asthma in allergic individuals or in the individuals with hyperactive immune system. Likewise, individuals with defective melanin production gene are more likely to develop skin cancer upon exposure to UV lights. Hence, specific conditions stimulate disease occurrence.
________ is a compound stored in the muscles to replenish atp stores.
According to the dichotomous key, in what way(s) is the house sparrow similar to the cobra?
what is the cell wall ?
One ozone molecule contains three _____ of oxygen.
Ozone consists of three oxygen atoms, for a total of 18 valence electrons. These can be equivalently distributed in two ways:
An athlete engages in some minor misbehavior. how should the coach respond to the athlete's misbehavior?
You are working in the emergency department of a regional hospital in rural kentucky. a patient is brought in by emergency medical technicians (emt's). their initial report is suspected meningitis because the patient has a headache and stiff neck. the emts add that the patient's meningitis symptoms appear rather mild – he still has neck movement, and the headaches are not severe. the patient's overall condition is poor, however. he is very thin, has dark spots on his face and upper body, and open bloody-looking eruptions on his lips. his fever is 104 0 f, and his blood pressure is low. he also has severe diarrhea. 1. what is the first step in determining if the patient has meningitis? 2. this test reveals the presence of very large cells that appear to be eukaryotic, surrounded by a large capsule. what is the probable diagnosis? name some other eukaryotic organisms that can cause meningitis symptoms. 3. what groups of people are at risk for this infection? 4. how is
The pathophysiology class is learning how microorganisms develop resistance to anti-infective drugs. what is one way the nursing students would learn that microorganisms develop resistance to anti-infective drugs?
Which type of environmental scientists is likely to study the effects of pesticides on pigs?
A. Ecologist
B. Oceanographer
C. Environmental veterinarian
D. Environmental physicians
The answer would be C -- environmental veterinarian
A few characteristics of a type of reproduction are shown below: 1. Occurs in all body cells 2. Two daughter cells are formed 3. Chromosomes arrange equally on either side of the equator 4. The daughter nuclei each have half the number of chromosomes as that of parent cells 5. Is necessary for sexual reproduction Which of the above are characteristics of meiosis? 1, 2, and 3 1, 4, and 5 2, 3, and 4 3, 4, and 5
Answer:
Option: 3, 4 and 5
Explanation:
Meiosis is the cell division that forms gametes. One parent cells forms four daughter cells each of which have half the number of chromosomes as that of the parent cell. During metaphase I of meiosis, chromosomes are arranged equally on either side of the equator followed by segregation of homologous chromosomes to opposite poles during anaphase I. Meiosis ensures presence of constant chromosome number through successive generation of species by formation of haploid gametes.
People with dark brown eyes have greater amounts of the protein melanin in their irises than people with light blue eyes. The amount of melanin produced is a direct result of _________.
Select one:
Environmental conditions
Their personality
The foods they received as children
DNA