Answer:
the nucleus
Explanation:
I think this is correct
What do only eukaryotes have
In animal cells, cell junctions called ______ junctions form barriers between cells that prevent leaking of fluids and water-soluble molecules.
Sari and Jon disagree over who needs more calories (proportionately) per day to survive a three-month-old baby or a
grown adult San argues that a grown adult is bigger and needs more calories per pound of body weight Jon believes
the baby would require more calories per pound of body weight
he is most likely conect and why?
San, because it takes more energy to move the larger muscles that adults have, so they need more calories
Jon, because babies grow at a much berate than adults and require more cabries to support this growth
Jah, because babies are more active than grown adults and need more energy from calories
San because adults have more to do during the day and need more calories to sustain their activities
Answer:
Jon, because babies grow at a much [faster rate] than adults and require more [calories] to support this growth
Explanation:
Adults need 13 calories per pound of body weight while babies need 35 to 50 calories per pound of body weight.
Answer:
b
Explanation:
In the movement of water across a selectively permeable membrane lab. What substance was actually able to pass through the membrane?
If the membrane is selectively permeable or semipermeable membrane molecules, such as hydrocarbons and oxygen can only cross the cell membrane.
Larger molecule like hydrocarbons and carbon cannot cross the cell membrane . water can only cross between the lipids .Hence ,Osmosis is a special type of diffusion, that allows diffusion of water across a semipermeable membrane. Water readily crosses a membrane down its potential gradient from high to low potential. Osmotic pressure is the force required to prevent water movement across the semipermeable membrane. Any substance crosses the cell membrane by two basic ways passive transport, which requires no energy; and active transport, which requires energy.
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The process of storing glucose as glycogen is known as?
Answer:
Glycogenesis
Explanation:
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Who were the scientists that hypothesized that RNA was the first self-replicating information storage molecule that catalyzed the assembly of the first proteins?
Group of answer choices
Watson and Crick.
Cech and Altman.
Lerman and Urey.
Darwin and Pasteur.
Cech and Altman discovered the self-replication and biocatalytic properties of RNA. Option B.
What did Cech and Altman discover?
After several years of research, Cech and Altman discovered that, apart from being inheritable molecules and being involved in protein synthesis, RNA functions as a biocatalyst -just like enzymes- .
These scientists discovered that RNA shares with DNA the capability of transmitting genetic information and with proteins the capability of facilitating chemical reactions as a biocatalyst.
They could prove that,
RNA can self-replicate because it carries the genetic information needed to do it and does not need other proteins. It has a significant protagonism in cellular metabolism.
In the enzyme's and additional energy absence, the molecule can start its maturation process, catalyzing reactions by itself. Cech named this RNA form with enzymatic function ribozyme.
This was a significant discovery since it demonstrated that not only proteins were involved in biological reactions.
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The controls of the windshield wiper and windshield washer are usually located on _______.
The controls of the windshield wiper and windshield washer are usually located on Right lever. Two levers on steering column contain controls for driving. .
A sun visor is located ion the above of windshield also called windscreen . Designed with a flap that is adjustable to help shade the eye of drivers and passengers from the glare of sunlight.
The combination switch they flip beam switch or the directional switch that is on the left hand stalk signals and cancels turn indications when moved up or down.Automotive wipers are controlled by a microprocessor. windshield washer used to keep it clear for rain . snow , dust.
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Different cyclin-dependent protein kinases (cdks) trigger different stages of the cell cycle in part because of which reason(s)?
Different cyclin-dependent protein kinases trigger different stages of the cell cycle because they are synthesized and increase their levels at different stages of the cycle.
What are cyclin-dependent protein kinases?Cyclin-dependent protein kinases are key proteins during the progression of the cell cycle that works together with cyclin proteins.
These proteins (cyclin-dependent protein kinases ) are able to phosphorylate different substrates during the cell cycle.
In conclusion, different cyclin-dependent protein kinases trigger different stages of the cell cycle because they are synthesized and increase their levels at different stages of the cycle.
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Stress initiates biological changes involving the autonomic and endocrine systems, as well as the system that helps the body ward off illnesses, the:____.
Stress initiates biological changes involving the autonomic and endocrine systems, as well as the system that helps the body ward off illnesses, the immune system.
What is the immune system?The immune system is a body system used by the body to fight against infections and diseases caused by bacteria and viral entities (they are not organisms).
The immune system is composed of physical barriers such as the skin mucous membranes, and endothelia that fight against pathogenic infections.
In conclusion, stress initiates biological changes involving the autonomic and endocrine systems, as well as the system that helps the body ward off illnesses, the immune system.
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Because of concern about mercury contamination, pregnant women are advised to avoid:_______
In green vegetables, such as broccoli, the orange pigments of provitamin A carotenoids are masked by
In green vegetables, such as broccoli, the orange pigments of provitamin A carotenoids are masked by lycopene.
What is lycopene good for?
Strong antioxidant lycopene has a number of positive health effects, including as better heart health, reduced risk of certain cancers, and protection from the sun. Although it is available as a supplement, eating lycopene-rich foods like tomatoes and other red or pink fruits may be the best way to get the greatest benefit.What is the side effects of lycopene?
Low blood pressure, an increased risk of bleeding, and digestive problems are some possible negative effects . There have been cases of lycopenaemia, a condition when eating a lot of lycopene-rich foods causes the skin to turn orange .Which of the following is best for preserving the vitamin content of food?
Storing food in the pantry is the best way to preserve its vitamin content. Antioxidants are compounds that protect the body against damage from free radicals.Learn more about lycopene
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The Stages of Change are known as what psychological model? Autonomy Self-Determination Theory (SDT) Motivational Interviewing (MI) The Transtheoretical Model (TTM)
The Stages of Change are known as The Transtheoretical Model (TTM)
The transtheoretical model of behavior change is an integrative treatment theory that determines whether a person is ready to adopt a new, healthier behavior and offers methods or tactics to help the person change.According to the TTM, there are six stages of change that people go through: precontemplation, contemplation, preparation, action, maintenance, and termination. Termination was not included in the initial model and is used less frequently when using the phases of change for behaviors relating to one's health. Different intervention techniques are most effective at advancing a person through each step of change so that they might reach maintenance, the optimal stage of behavior, later on in the model.learn more about Transtheoretical Model here: https://brainly.com/question/13171327
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Which of the following has a primary role in attacking cancer cells and protecting against some pathogens by killing harmful cells on contact
What causes clouds to condense and form?
Select one:
O a. As cold air sinks, water vapor is released.
O b.
As hot air rises, water vapor is released.
O c.
As winds drive cold air across the Earth's surface, water vapor is released.
O d. As winds drive hot air across the Earth's surface, water vapor is released.
Answer:
C
Explanation:
As winds drive cold air across the Earth's surface, water vapor is released.
Answer:
B
Explanation:
Water is constantly cycling through the atmosphere. Water evaporates from the Earth's surface and rises on warm updrafts into the atmosphere. It condenses into clouds, is blown by the wind, and then falls back to the Earth as rain or snow.
Neurons in the somatosensory cortex receive somatic sensory information from ______.
Neurons in the somatosensory cortex receive somatic sensory information from Efferent neurons.
The somatosensory cortex gets tactile records from the body, along with sensations such as contact, pressure, temperature, and ache. This sensory records is then carried to the brain thru neural pathways to the spinal wire, brainstem, and thalamus.
The number one somatosensory vicinity of the human cortex is placed within the postcentral gyrus of the parietal lobe. The postcentral gyrus is the place of the primary somatosensory vicinity, the vicinity of the cortex dedicated to the processing of touch information.
Sensory receptors are categorized into five classes: mechanoreceptors, thermoreceptors, proprioceptors, ache receptors, and chemoreceptors.
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Neurons in the somatosensory cortex receive somatic sensory information from Afferent neurons.
Afferent Neurons or Sensory Neurons receive information from the sensory neurons to the somatosensory cortex.
The somatosensory cortex gets tactile records from the body. Along with sensations such as pressure and temperature.
The sensory records is carried to the brain through neural pathways to the spinal cord and deep brain.
The number one somatosensory vicinity of the human cortex is placed within the postcentral gyrus of the parietal lobe. The postcentral gyrus is the place of the primary somatosensory vicinity, the vicinity of the cortex dedicated to the processing of touch information.
Sensory receptors are of following types:
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Which of the following has two lenses as well as a light bulb in the base that shines light through the specimen?
Group of answer choices
scanning electron microscope
compound light microscope
transmission electron microscope
scanning tunneling microscope
Answer: compound light microscope
Explanation: a microscope that shines light through a specimen and has two lenses to magnify an image (Ocular lens and Objective lens)
During gene therapy, bone marrow stem cells are removed from the individual. What must happen to those cells before they are injected back into the individual
During gene therapy, Viruses act as vectors to carry the normal gene into the genome of the stem cells.
Gene therapy uses viruses to implant therapeutic genes into stem cells. Viruses proliferate by injecting their genetic material into living cells. A virus is utilized to implant a healthy version of the ADA gene into the patient's stem cells in order to treat ADA-SCID.
Since stem cells may regenerate on their own, the need for recurrent injections of therapeutic cells may be reduced or perhaps eliminated in cell-based gene therapy. Gene therapy's main objective is to treat illnesses brought on by damaged genes.
Cell treatment is the transfer of cells to a patient, whereas gene therapy involves the transfer of genetic material into the proper cells. The transfer of genetic material during gene therapy often occurs in vector form.
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An intravenous hypertonic solution containing dextrose, proteins, vitamins, and minerals is known as?
An intravenous hypertonic solution containing dextrose, proteins, vitamins, and minerals is known as total parenteral nutrition
A hypertonic solution is one that has more dissolved particles than normal cells and blood do, including salt and other electrolytes. For instance, wounds are soaked in hypertonic liquids.
Blood has a lower concentration of dissolved particles than hypertonic fluids. 3 percent Normal Saline is an illustration of a hypertonic IV solution (3 percent NaCl). The intravascular space has a higher concentration of dissolved solutes than the cells when hypertonic fluids are injected. In contrast to a hypotonic solution, a hypertonic solution includes more of the other substance and less water.
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A male is heterozygous for the trait that produces freckles on the skin, and he has freckles. If he marries a woman who is also heterozygous for freckles, ________ of their children are predicted to be freckled. Also, of all their children, ________ are predicted to be heterozygous.
A male is heterozygous for the trait that produces freckles on the skin, and he has freckles. If he marries a woman who is also heterozygous for freckles, 75% of their children are predicted to be freckled. Also, of all their children, 50% are predicted to be heterozygous.
The genotype of a plantThe plant must be homozygous for the trait because the phenotype reflects the genotype. To test if any white plants emerge, cross the red plant with a white plant.A gene region where there are two distinct alleles present. A heterozygous genotype can consist of one normal allele and one mutated allele, or two different mutated alleles.The symbol Tt stands for the heterozygous state, in which a gene's homologous pair has two distinct alleles.Learn more about phenotype here:
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what is the function of any muscle tissue?
The high level of diversity in the fossils found at the sites of Jebel Irhoud, Omo, and Herto in Africa support
The first fossils of Homo sapiens are found across the African continent: Jebel Irhoud, Morocco (300,000 years old), Florisbad, South Africa (260,000 years old) and Omo Kibish, Ethiopia (195,000 years old). This indicates a complex evolutionary history of our species, possibly involving the entire African continent.
Where was the oldest human fossil found?Named Omo I, the fossils were found in the 1960s, in the Omo Kibish Formation, Ethiopian part of the Rift Valley, in the eastern portion of the African continent. The region is an area of high volcanic activity and a rich source of early human remains, as well as artifacts such as stone tools.
With this information, we can conclude that The oldest fossils ever found of modern humans (Homo sapiens) are at least 233,000 years old.
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in cocker spaniels, solid coat color is dominant over spotted coat color. If two heterozygous dogs were crossed to each other, what would be the probability of the following combinations of offspring
A gene region where there are two distinct alleles present. One normal allele, one mutated allele, or two distinct mutated alleles can make up a heterozygous genotype.
Combinations of offspring:Let's say that the letter S stands for a solid coat and the letter s for a spotted coat. This indicates that the genomes of the two heterozygous cocker spaniels are Ss. As a result, the likelihood of the progeny having a solid coat (SS and Ss) is 75% and a spotted coat (SS) is 25%.
There is a 25% chance that the firstborn puppy in the first litter will have spotted fur. The likelihood that 4 of the 5 remaining pups will have spotted fur is 1/4 x 1/4 x 1/4, or 1/256. Calculate the likelihood that the second litter will have 6 pups with solid fur by multiplying 3/4 by 6, which equals 64/4096 or 1.5% The probability that the second litter will contain 1 pup with spotty fur is 25%.
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When analyzing photosynthetic microorganisms in a lake you often find that the photosynthetic microorganisms growing at the very surface are green, while photosynthetic microorganisms growing deeper are often purple. What is the energetic and molecular reasoning for the purple coloring in the lower levels
The photosynthetic microorganisms growing at the very surface are green, while photosynthetic microorganisms growing deeper are often purple because purple bacteria need an anoxic condition.
Purple microbes are anoxygenic phototrophs generally spread in nature, particularly in aquatic environments. Purple microbes are emphatically photoheterotrophs, regardless of whether they are fit for photoautotrophy, they are prepared for living in dull and deeper conditions in the aquatic region on account of the anoxic circumstances that favor the synthesis of their pigments.
In all cases, there is light absorption by a pigment that gets energized by a photon of light. This isolates electrons from a particle coupled to an ETS that is homologous to those of respiratory ETS.
Purple microbes catch light not utilized by other phototrophs. The pinnacle frequency consumed by bacteriochlorophyll P870 lies such a long way into the infrared (800-1,100 nm) that the photon energy is inadequate to lessen NAD(P) to NAD(P)H.
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The more a sample can be diluted and yet still react with antigen, the __________ the concentration of antibodies in that sample and the __________ is its titer.
The more a sample can be diluted and yet still react with antigen, the higher the concentration of antibodies in that sample and the higher is its titer.
What is antibodies?Antibodies, also called immunoglobulins (Ig), are proteins responsible for warning the body when there is a disease-causing agent (such as bacteria, viruses, among others) in the body. They act to eliminate it, and in the process, other cells will be activated to help with this task.
What is tiltration?Titration is a laboratory procedure used to determine the concentration in amount of matter (titer) of a solution that contains an acid or a base. During the titration, there is always a mixture of solutions containing different solutes with chemical reaction occurring.
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A gene is a _______________________. Group of answer choices display of the chromosome pairs of a cell complete set of an organism's polypeptides that perform many functions complete set of a cell's polysaccharides that store energy specific sequence of DNA nucleotides that encodes inherited traits
What is a gene?
According to Mendel something was being stably passed down, unchanged, from parent to offspring through the gametes, over successive generations. He called these things as ‘factors’ now called as genes. Genes, therefore, are the units of inheritance. They contain the information that is required to express a particular trait in an organism. Genes which code for a pair of contrasting traits are known as alleles, i.e., they are slightly different forms of the same gene. There is no ambiguity that the genes are located on the DNA, it is difficult to literally define a gene in terms of DNA sequence. The DNA sequence coding for tRNA or rRNA molecule also defines a gene. A cistron is defined as a segment of DNA coding for a polypeptide, the structural gene in a transcription unit could be said as monocistronic (mostly in eukaryotes) or polycistronic (mostly in bacteria or prokaryotes).To learn more about transcription:
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Aside from neurons, epithelia are the only other tissue that can sometimes serve as?
Aside from neurons, epithelia are the only other tissue that can sometimes serve as sensory perception.
The epithelium is a type of body tissue that covers all of the internal and exterior body surfaces, lines hollow organs and body cavities, and makes up the majority of glandular tissue. It serves a range of purposes, including absorption, secretion, and protection.
Your body can pick up external sensory impulses thanks to sensory nerve endings embedded in epithelial tissue. As an illustration, hearing and balance depend on the stereocilia on the outer surface of the epithelial tissue in your ear.
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If there is an high concentration of carbon dioxide in the blood stream, it will diffuse into the
Answer:no because we have vitals that help with that
Explanation:
Scientists use the scientific process to which mechanisms underlie observations; they do not if a particular finding is correct or not. a broad statement called a can be used to solidify reasoning before setting up an experiment, and then the scientific process is followed to test one's idea. to illustrate, consider this scenario: suppose you are a researcher investigating the impact of eating eggs on cholesterol levels. your states "consuming an egg everyday increases blood cholesterol". you use a carefully designed experiment to determine if your statement is or not. in this experiment, number of eggs is the , while cholesterol level in the blood is the . you recruit 100 subjects and divide them into two groups: the corresponds to subjects who will eat an egg everyday, and the comprises individuals who will not consume eggs. in order to avoid confounding results, both groups need to have like same gender, similar age, consistent baseline cholesterol measurements, equivalent food consumption, identical exercise routine, etc. in a well-designed experiment, there should only be one variable, but many variables. after a six-month trial, your data show both groups have similar blood cholesterol measurements. your conclusions include that eating one egg everyday for one year does not raise blood cholesterol; your hypothesis was .
The hypothesis was that eating one egg everyday for one year may or may not raise blood cholesterol levels.
What is a hypothesis?A hypothesis is an explanation given prior to testing of an observation.
A hypothesis aims to give a reasonable explanation for a given observation.
The experiment given was designed to test if eating one egg everyday for one year will raise blood cholesterol.
Therefore, the hypothesis was that eating one egg everyday for one year may or may not raise blood cholesterol levels.
In conclusion, a hypothesis is like a guess without testing.
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What technique uses a series of criteria and questions referring to physical characteristics to narrow down and determine the classification or name of a species?
A. Classification
B. Phylogenetics
C. Dichotomous Key
D. Binomial naming
abc or d with a simple explanation
Dichotomous key is the technique which uses a series of criteria and questions referring to physical characteristics to classify species.
What is Dichotomous key?This was created by scientists to help classify different types of species in the ecosystem.
This employs the use of questions to contrast species in order to look for similar features to group them.
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Substance A is transported from the plasma of the peritubular capillary into the fluid of the renal tubule. Substance A is said to be __________.
The transport of substance A from peritubular capillary into the fluid of renal tubule is Tubular secretion.
What is Tubular secretion?
Tubular secretion is the phenomenon of transfer of materials from peritubular capillaries to fluid of renal tubule. It is basically a process of toxins removal from blood capillaries and tissues and their active secretion into the nephrons. The nephrons are surrounded by peritubular capillaries and the exchange between nephron and blood occurs via peritubular capillaries. The tubular secretion is most active in proximal convoluted tubule (PCT). Tubular secretion is an important parameter for measuring kidney function and excretion process. It also maintains the blood pH.
Hence, the substance A that is transported from plasma of peritubular capillary into fluid of reanl tubule is said to be secreted.
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