Answer:
The amount of lipids stored as an energy reserve far exceeds the energy stored as glycogen since the human body is simply not capable of storing as much glycogen compared to lipids. Lipids yield 9 kcal of energy per gram while carbohydrates and proteins yield only 4 kcal of energy per gram.
Suggest an intracellular regulatory molecule (from your text) that growth factors might stimulate to control cell division. Please describe how it works.
Answer:
E2F transcription factors
Explanation:
The E2F transcription factors (TFs) encode intracellular factors associated with the control of the cell cycle. E2F are TFs that bind to promoter consensus sequences in order to activate transcription. These TFs control the expression of target genes involved in cell proliferation including, among others, genes for DNA replication and mitotic activation. Moreover, the E2F proteins also may act as a link between cell fate and the cell cycle. The retinoblastoma (Rb) is a protein that modulates the activity of the E2F family of TFs, and it has been shown that the Rb/E2F pathway is a key molecular mechanism associated with cell proliferation.
Merlin’s paper discusses two types of data: artifactual and paleoethnobotanical. Give specific examples of each and describe the sources of data and the type of information you can gain.
Answer:
Merlin's paper discusses two types of data: artifactual and paleoethnobotanical. Give specific examples of each and describe the sources of data and the ...
What are 4 questions to understand behavior
Explanation:
1. What u like doing
2. What u dislike
3. What easily gets u angry
4. What makes u happy
That's how I understand it
If one DNA strand is 5'-GGCATTACACTAGGCCT-3', what is the complementary srand?
Answer:
3' - CCGTAATGTGATCCGGA - 5'
Explanation:
In DNA, the leading strand builds from a 5' to 3' direction and the lagging strand (complementary strand) must build from a 3' to 5' direction.
The base-pairing rules for DNA are:
- adenine always pairs to thymine (A to T) (T to A)
- guanine always pairs to cytosine (G to C) (C to G)
Which joint performs adduction, abduction, horizontal adduction and abduction, medial and lateral rotation, and circumduction?
Answer:
The ball and socket joint is the one that can perform all those movements.
Explanation:
Ball and socket joint, also know as spheroid joint are types of joints where the part of the bone that articulates with the other bone has a spheroidal shape or ball shape that fits in the depression of the other bone, which means that they are a synovial enarthrosis joint. It has a wide range of movements because it can move in the transverse, vertical, and sagittal axes. An example of this joint is the shoulder, between the scapula and the humerus.
Answer: Sholder and hip
Explanation:
What are some changes that can occur in ecosystems?
Answer:
There are so many changes that occur in ecosystem, they are:Habitat change. climate change. invasive species. over exploration. pollution.Explanation:
Hope it helps you.Seasons, tide cycles, population sizes, landscape changes, succession evolution, and climate change are instances of changes that can occur in ecosystems.
What is an ecosystem?An ecosystem is a geographical area wherein plants, animals, and other organisms, along with weather and landscape, coexist to form a life bubble.
The instances of changes that can occur in ecosystems can be seasons, tide cycles, population sizes, landscape changes, succession evolution, and climate change.
Thus, these are some changes that can occur in the ecosystem.
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Why is it important to classify the millions of species on Earth? to have common names that everyone can remember to more easily sequence their genetic material to devise scientific names that only scientists can learn to organize them and speak about them accurately
Answer:
to organize them and speak about them accurately
Explanation:
There are millions of species that exist on Earth. Many of them are yet to be discovered. They are named and classified into specific groups. This helps in organizing each specie according to the characteristics, and traits. The classification is done to show the hierarchy and focuses on the relationships that the organisms possess with other organisms about evolution. Classification helps in identifying and analyzing any specific specie accurately and particularly.
Answer:
The answer is D.
Explanation:
The first person who answered this was correct.
4: Units of inheritance known as genes exist in pairs.
a) TRUE
b) FALSE
5: A tall plant (AA) is crossed with a short plant (aa). The offspring produced in Fl will be
a) all Tall
b) short
c) y tall and 72 short
d) no of the above
6: The genotypes (or genotypic ratio) of the Fl offspring in 5 will be
a) all Aa (correct)
b) 12 AA, 12 Aa
c) aa
d) none of the above.
7: Alternate forms of genes are called alleles.
a) TRUE
b) FALSE
8: Phenotypes are
a) physical characteristics determined by genes
b) genes
c) genetic characteristics
d) alleles
9: The inheritance law known as the Law of segregation was postulated by
a) Mendel
b) Aristotle
c) Morgan
d) Darwin
10: Heterozygous organisms carry one dominant and one recessive allele
Answer:
4. a
5. a
6. a
7. a
8. a
9. a
10. True
Explanation:
4. Units of inheritance in living organisms are known as genes. These genes exist in pairs in all organisms and a copy of each gene is passed down to the offspring during reproduction.
Correct option: a
5. Assuming the dominance of allele A over allele a:
AA x aa
Aa Aa Aa Aa
All the offspring will appear tall since the effects of allele a is masked by allele A.
Correct option: a
6. From the cross in (5) above, the genotypic ratio of the offspring is 100% Aa.
Correct option: a
7. Alternate forms of genes in living organisms are known as alleles. A copy of the alleles is usually passed down to the offspring during the process of reproduction.
Correct option: a
8. Phenotypes are the physical appearance of organisms. They are physical interpretation of genes.
Correct option: a
9. The law of segregation was postulated by Gregor Mendel. It states that gene pairs segregate during the process of meiosis and then randomly unite during the process of fertilization.
Correct option: a
10 Heterozygous organisms have two different alleles for the same genes. For genes that obey Mendelian laws, heterozygous condition is characterized by one dominant and one recessive alleles.
Organisms inherit specific traits and characteristics from their parents.
Answer:
True
Explanation:
It gets passed doen like one dominant brown eye and a recessive blue eye. most likley the brown would be passed down.
A certain strain of E. coli is constitutive for the enzymes for lactose metabolism. On an F' plasmid you have the choice of adding one (but only one) element of the lac system to make the bacteria a merodiploid for that element. Assume the original E. coli has wild-type structural loci. If your goal is to determine whether the lac operon is constitutive because of a mutant regulator OR because of a mutant operator, which one wild-type element of the lac operon would you add using sexduction?
a. operator region
b. regulator (repressor)
c. gene promoter region
d. structural genes
Answer:
The correct option is B: regulator (repressor)
Explanation:
A regulator gene would be required to control the expression by either increasing or decreasing the transcription of that particular gene. In doing so, the amount of protein product made by the gene can be regulated. In the wild-type case, the gene lacl is responsible for generating the mRNA which translates to a Lac repressor protein that binds at the operator region.
Which of the following statements best describes the role of hormones in the body? Hormones send chemical signals throughout the body to regulate body processes.
Answer:
Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus elicits the release of a substance; once the substance reaches a certain level, it sends a signal that stops further release of the substance. In this way, the concentration of hormones in blood is maintained within a narrow range. For example, the anterior pituitary signals the thyroid to release thyroid hormones. Increasing levels of these hormones in the blood then give feedback to the hypothalamus and anterior pituitary to inhibit further signaling to the thyroid gland, as illustrated in Figure 18.14. There are three mechanisms by which endocrine glands are stimulated to synthesize and release hormones: humoral stimuli, hormonal stimuli, and neural stimuli.
Explanation:
Hyperthyroidism is a condition in which the thyroid gland is overactive. Hypothyroidism is a condition in which the thyroid gland is underactive. Which of the conditions are the following two patients most likely to have?
Patient A has symptoms including weight gain, cold sensitivity, low heart rate and fatigue.
Patient B has symptoms including weight loss, profuse sweating, increased heart rate and difficulty sleeping.Humoral Stimuli
The term “humoral” is derived from the term “humor,” which refers to bodily fluids such as blood. A humoral stimulus refers to the control of hormone release in response to changes in extracellular fluids such as blood or the ion concentration in the blood. For example, a rise in blood glucose levels triggers the pancreatic release of insulin. Insulin causes blood glucose levels to drop, which signals the pancreas to stop producing insulin in a negative feedback loop.
Hormonal stimuli refers to the release of a hormone in response to another hormone. A number of endocrine glands release hormones when stimulated by hormones released by other endocrine glands. For example, the hypothalamus produces hormones that stimulate the anterior portion of the pituitary gland. The anterior pituitary in turn releases hormones that regulate hormone production by other endocrine glands. The anterior pituitary releases the thyroid-stimulating hormone, which then stimulates the thyroid gland to produce the hormones T3 and T4. As blood concentrations of T3 and T4 rise, they inhibit both the pituitary and the hypothalamus in a negative feedback loop.
The statement that describes the role of hormones in the body is Enzymes reduce the activation energies of biological reactions.
What are hormones?Hormones are chemicals that are secreted by the two glands, endocrine and exocrine glands.
Endocrine glands secrete hormone directly into the bloodstream, and exocrine glands are secrete hormones into ducts.
The options are attached here:
A.Enzymes aid biological reactions by providing more reactants.B.Enzymes aid biological reactions by removing products quickly.C.Enzymes raise the temperature in a cell to speed up biological reactions.D.Enzymes reduce the activation energies of biological reactions.E.Enzymes reduce the energy of products in biological reactions.Thus, the correct option is D.Enzymes reduce the activation energies of biological reactions.
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WILL MARK BRAINLIEST!Which effect is most likely from a hurricane?
A. damaged homes due to flooding
B. forest fires due to lightning strikes
C. cars sucked in due to a low-pressure center
D. damaged personal property due to hail
Answer:
A. damaged homes due to flooding
Explanation:
A hurricane is a storm that produces heavy rains and winds. When it rains heavy, water levels rise which leads to flooding and damages homes.
Also, choice B is the effect of lightning striking trees, choice C is the effect of a tornado, and choice D is the effect of a hail storm.
Hope that helps.
Answer:
I think its A
Explanation:
46:11
The diagram shows an animal cell.
Which letter marks the location where carbon dioxide
is produced during respiration?
W
Х
Y
Z
Nonvascular plants lack _____. a. zygotes b. gametes c. seeds d. spores e. chloroplasts
Answer: Nonvascular plants lack seeds
The Non vascular plants lack seeds as there is no seed found in the non vascular plants. Thus, option C is correct.
What is the example of Non vascular plants?
The example of Non vascular plants is Ferns which has been refer to the vascular plants which usually reproduce via spores and they neither have seeds nor they have flowers as well as they also show alternate of generation in which diploid sporophyte is a dominant phase of the life.
The diploid sporophyte produces spores through meiosis and the spores divide through mitotic divisions and get developed into haploid gametophytes. The gametophyte produces haploid gametes which fertilize to produce a diploid zygote. The zygote develops and grows into mature sporophyte through mitotic divisions.
Therefore, The Non vascular plants lack seeds as there is no seed found in the non vascular plants. Thus, option C is correct.
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Jayden is raised in a culture where girls are not expected to like math or do well at math. Jayden therefore rarely studies for tests and in middle school, her test scores begin to drop below the average. In high school, she ends up taking the lower-level math courses. Which theoretical concept does this example illustrate? A. cognitive dissonance B. the self-fulfilling prophecy C. the actor-observer discrepancy D. the fundamental attribution error
Answer:
THE SELF FULLFILLING PROPHECY
Explanation:
BRAINLIEST PLS
In the microarray analysis some genes, such as ERB-B2 and ESR1, have been found to be associated with particular disease or conditions such as cancer. Other genes, such as the ABC-B2 gene, are not associated with a disease but are involved in resistance to certain drugs or treatments. Why would it be useful to test for the expression of genes like the ABC-B2 gene on the microarray
Answer:
The expression of genes associated with drug resistance leads to the reduction in the effectiveness of drugs against cancer cells.
Explanation:
In cancer, drug resistance is produced when oncogenic cells are able to develop mechanisms of resistance against drugs such as, for example, chemotherapeutic agents. In these cases, therapeutic treatments become ineffective to fight against cancer cells and tumor progression. In consequence, it is imperative to trace the expression of target oncogenes associated with drug resistance in order to provide effective treatments to eliminate cancer cells.
Which examples show repair or replacement of damaged cells? a scrape being healed scars forming where a cut once belonged skin flaking off your arm in the winter
Answer:
Its A & B
Explanation:
a scrape being healed
scars forming where a cut once belonged
Answer:
A and B
Explanation:
i got it right on edge-
How old can the earth be in 90001 years?
Answer:
90001 years old
Explanation:
Natural proteins most commonly contain linear polypeptides between 100 and 1000 residues in length. One of the reasons polypeptides outside this range may be disfavored is that
B) smaller polypeptides do not form stable folded structures.
Drag each tile to the correct box.
Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.
Complete question:
Drag each tile to the correct box.
Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.
Interneurons relay the impulse to motor neurons in the spinal cord.She immediately moves her foot. The sensory neuron generates an impulse. Receptors in her toe receive stimuli. Motor neurons signal the leg muscles.Answer:
4. Receptors in her toe receive stimuli
3. The sensory neuron generates an impulse.
1. Interneurons relay the impulse to motor neurons in the spinal cord.
5. Motor neuron signal the leg muscles
2. She immediately moves her foot.
Explanation:
The reflex arc refers to an action mechanism that responds to different stimuli. It is an involuntary reaction involving different nervous vias. The reflex arc is composed of receptors, afferent nervous fibers, efferent nervous fibers, and effectors.
Receptors are located in nervous terminals and are widely distributed in the organism. Receptors are capable of receiving stimuli from different nature, and most of them are specialized in one kind of stimuli such as vision, audition, touch, among others. In the exposed example, these sensory receptors were located in the toe, and probably they were touch receptors.
When they receive the stimulus the sensory neuron transforms it into an excitatory nervous impulse that goes to the central nervous system along the afferent nerves. This stage is known as the afferent via, beginning with the environmental information received by sensory receptors, and ending in the arrival of the transcripted message to the central nervous system.
When the central nervous system receives the information, it processes it and sends an appropriate answer according to the stimulus. The message goes along the interneurons to the motor fibers, which are in charge of taking that answer to its destiny, the effectors. Effectors are usually muscles or glands, and they transform the received impulse into a motor answer that executes the reflex action. In the exposed example, the effector in the muscle. This stage is known as the efferent via, beginning in the central nervous system sending an answer impulse and ending in the effector (muscle) executing the answer.
Answer:
Receptors in her toe receive stimuli.
The sensory neuron generates an impulse.
Interneurons relay the impulse to motor neurons in the spinal cord.
Motor neurons signal the leg muscles.
She immediately moves her foot.
Explanation:
right on edMentum
Why is it important to classify the millions of species on Earth? to have common names that everyone can remember to more easily sequence their genetic material to devise scientific names that only scientists can learn to organize them and speak about them accurately
Answer:
to organize them and speak about them accurately.
Explanation:
organisms are classified to understand the relationships between all living things.
Answer:
D
Explanation:
Estimate the volume of a human heart (in mL) using the following measurements/assumptions: Blood flow through the aorta is approximately 11.2 cm/s The diameter of the aorta is approximately 3.0 cm Assume the heart pumps its own volume with each beat Assume a pulse rate of 67 beats per minute.
Answer:
The correct answer is 70.92 ml.
Explanation:
Based on the given question, the rate of the flow of blood through the aorta (v) is 11.2 cm/s.
The given diameter of aorta is 3.0 cm
Thus, the radius (r) of aorta will be, 3.0/2 = 1.5 cm
The cross-sectional area of the aorta (A) will be calculated by using the formula, πr²
= π ×(1.5)² cm²
= 2.25 π cm²
The pulse rate given is 67 beats per minute, therefore, time taken for 67 beats is 60 seconds, hence, time taken for 1 beat will be 60/67 second
Now the volume of the heart will be,
= A × v × t
= 2.25 π cm² × 11.2 cm/s × 60/67 s
= 70.92 cm³
As 1 cm³ is equal to 1 ml. So, the volume of a human heart will be 70.92 ml.
The respiratory system allows for gas exchange to happen in the lungs. How do the respiratory and cardiovascular systems interact?
Well, the respiratory system is responsible for bringing oxygen into the body. Blood passes in capillaries in the lungs and picks up the oxygen. Blood carries oxygen to different parts of the body. Then the blood take carbon dioxide, a waste gas, back to the lungs. Then the lungs expel the carbon dioxide when you exhale.
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Yellow dung flies (Scathophaga stercoraria) are diploid organisms with 12 chromosomes in their diploid cells. Without taking into account recombination, how many different genetic gametes can this fly generate based on the arrangement of its chromosomes in the metaphase plate during meiosis
In the given case, the sum of the number of gametes possible in the fruit fly is 2¹² or 4096.
Determination of the number of genetic gametes:
At metaphase I, the arrangement of chromosomes takes place at the equatorial plate and at the equator, the orientation of homologous pairs takes place randomly. This orientation helps in finding the genes found within a gamete as each of the gametes will get only one chromatid of a chromosome.
Now by independent assortment, the variation occurs within the gametes, which suggests that the alleles of distinct genes separate independently from one another at the time of cell differentiation. Due to independent assortment, the number of different kinds of gametes possible within the chromosomes can be determined by using the formula, 2ⁿ, where n is the number of chromosomes present within a set.
Thus, based on the given information, the number of chromosomes present in a fruit fly is 12. Thus, the sum of the number of gametes possible in the mentioned fruit fly is 2¹² or 4096.
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cm
If a plate moves at a rate of 3 toward
year
the north, where would the plate be in 5,000
years? Express your answer in meters.
Ostriches can evade predators by running away on their powerful legs.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
When threatened, ostriches run away, but they can cause serious injury and death with kicks from their powerful legs. Contrary to popular belief, ostriches do not bury their heads in sand to avoid danger. This defensive behavior of lying low, so that they may appear from a distance to have their head buried.
Ao examinar um fenômeno biológico, o cientista sugere uma possível explicação para seu mecanismo, baseando-se na causa e no efeito observados. Esse procedimento é conhecido como
Responder:
Hipótesis científica
Explicación:
El procedimiento de representar un fenómeno que no puede explicarse a la luz de la teoría científica actual se llama hipótesis científica.
Generalmente, en el orden de los Métodos Científicos, las observaciones y las preguntas son los primeros pasos. Sin embargo, para proporcionar posibles explicaciones al fenómeno obtenido al hacer preguntas y observaciones, se necesita una suposición o sugerencia. Esta es la suposición científica: para que sea válida, debe ser refutada, basada en la observación cuidadosa del fenómeno.
su esencia es predecir los posibles resultados de un intento de experimentos y después de realizar los experimentos para confirmar si el resultado está de acuerdo con la predicción.
Answer:
Scientific hypothesis
Explanation:
The procedure of representing a phenomenon which can not be explained in the light of the present scientific theory is called scientific hypothesis.
Generally in the order of Scientific Methods observations and asking of questions are the early steps.How ever, to provide possible explanations to the phenomenon by asking questions and observation , a guess or suggestion is needed. This is the scientific guess,For it to be valid,it must be refuted, based on the careful observation of the phenomenon.
its essence is to predict the possible outcomes of an intending experiments and after conducting the experiments to confirm if the outcome agrees with the prediction.
Since viruses are typically 20-200nm in diameter.. what is the best microscope to view them?
Answer:
electron microscope
Explanation:
Due to their extremely small size, the best microscope to view viruses would be the electron microscope.
The electron microscope has the capability to create resolved images of extremely small objects by utilizing electrons as a source of light instead of the visible light photon that is typical of light microscopes.
There are different two types of electron microscopes:
the scanning electron microscope, andthe transmission electron microscope.A typical scanning electron microscope creates an image of an object by detecting knock-off electrons from the object, whereas a transmission electron microscope uses electrons that pass through the object to create the image of the object.
Reptiles are closely related to birds. Which of the following characteristics do birds and reptiles share?
There are two primary models of the universe. One is the expanding model, which says that the universe is constantly increasing in size. The other is, the steady state model, which says that the universe is approximately constant in size and shape. What evidence would you expect to see if the expanding model were correct?
Answer:
Ok, suppose that the universe is expanding:
If the universe is expanding, then the distance between "fixed" points in the universe (we can set the fixed points as planets, galaxies, etc) would change with the time.
This means that, if the distance between the Earth and a given star or planet (that is not in our nearby region) should change as time goes by.
Now, this was actually observed:
There is something called the doppler effect:
In a short way, if an object is moving away, the light that comes from that object will have a red shift (it seems a little more reddish than it actually is)
If the object is moving towards us, the light that comes from the object will have a blue shift (it seems a little more blueish than it actually is)
Those shifts can be observed from the Earth, so from that is safe to conclude that the expanding model is actually correct.
Answer:
Observing objects in the sky that gradually move away from Earth could prove that the expanding model is correct.
Explanation: