According to the video, which organelle act like tiny, protein factories for
the cell? *
Mitochondria
Cytoplasm
Nucleus
Ribosomes
Answers
Answer:
Ribisomes
Explanation:
Hope this helps!
Related Questions
Jacoby is studying a population of diploid single-celled Eukaryotic parasites that live inside mouse blood cells. He finds that a gene, H, has two alleles, H1 and H2, which show codominance. Looking under a microscope, Jacoby can count the parasite cells that have each phenotype. He finds that 2% of the cells have the phenotype associated with H1H1 and 1% of the cells have the phenotype associated with H1H2. Which of the following are accurate? There is more than one correct answer.
The Hardy Weinberg Equilibrium model predicts that f(H1H1) = f(H1)2
f(H2H2) = 1.0 – 0.01 – 0.02
The population is in Hardy Weinberg Equilibrium with respect to the H gene
f(H2H2) = (0.97)2
f(H1) = 0.02 + 0.5 * 0.01
Answers
Following the Hardy-Weinberg equilibrium theory, the correct options are, A) f(H2H2) = 1.0 – 0.01 – 0.02, D) The population is NOT in Hardy Weinberg equilibrium with respect to the H gene, F) Hardy Weinberg model predicts that F(H1H1) = f(H1)², E) The Hardy Weinberg Equilibrium model predicts that f(H2) = F(H2H2) + 0.5 F(H1H2).
What is Hardy-Weinberg Equilibrium?
The Hardy-Weinberg equilibrium is a theory that states that a population in equilibrium will express the same allelic and genotypic frequencies through several generations.
Assuming a diallelic gene,
Allelic frequencies in a locus (represented as p and q),• The frequency of the dominant allele p(X) is p
• The frequency of the recessive allele p(x) is q
The addition of the allelic frequencies equals 1
p + q = 1.
Genotypic frequencies after one generation are• p² (Homozygous dominant genotypic frequency),
• 2pq (Heterozygous genotypic frequency),
• q² (Homozygous recessive genotypic frequency).
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
Allelic and genotypic frequencies remain the same through generations in a population that is in H-W equilibrium.
In the exposed example,
Alleles are H1 and H2The frequency of H1 = pThe frequency of H2 = qThe frequency of H1H1 = p²The frequency of H1H2 = 2pqThe frequency of H2 = q²Genotypic frequencies
F(H1H1) = p² = 2% = 0.02
F(H1H2) = 2pq = 1% = 0.01
F(H2H2) = q² = ?
To get the genotypic frequency of the H2H2 we can clear the following equation,
p² + 2pq + q² = 1
0.02 + 0.01 + q² = 1
q² = 1 - 0.02 - 0.01
q² = 0.97
Now, we can get allelic frequencies,
f(H1) = √p² = √0.02 = 0.14
f(H2) = √q² = √0.97 = 0.98
To see if this population is in H-W equilibrium, the addition of the allelic frequencies should equal 1.
p + q = 1
0.14 + 0.98 ≅ 1
This population is not in H-W equilibrium. It is evolving.
The correct options are
A) f(H2H2) = 1.0 – 0.01 – 0.02
D) The population is NOT in Hardy Weinberg equilibrium with respect to the H gene
F) Hardy Weinberg model predicts that F(H1H1) = f(H1)²
E) The Hardy Weinberg Equilibrium model predicts that f(H2) = F(H2H2) + 0.5 F(H1H2)
You can learn more about Hardy Weinberg equilibrium at
https://brainly.com/question/29773694
#SPJ1
Complete options,
Which of the following are accurate?
A) f(H2H2) = 1.0 - 0.01 -0.02
B) f(H1) = 0.02 +0.5 * 0.01
C) f(H2H2) = (0.97)²
D) The population is not in Hardy Weinberg Equilibrium with respect to the H gene.
E) The population is in Hardy Weinberg Equilibrium with respect to the H gene
F) Hardy Weinberg Equilibrium model predicts that f(H1H1) = f(H1)² = The G) Hardy Weinberg Equilibrium model predicts that f(H2) = f(H2H2) + 0.5 * f(H1H2)
Name some useful products or materials that are carried by blood.
Answers
Answer:
Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.
The human body is a complex system. Which pair of systems below is most directly required to make the human body move?
Answers
Answer:
Explanation:
The answer to your question: The muscular and skeletal systems! Hope this helped :)
Typically found at the apical surface of an epithelial layer, a __ __ serves to prevent/limit paracellular transport as well as sealing and providing support to the epithelium.
Answers
Typically found at the apical surface of an epithelial layer, a tight junction serves to prevent/limit paracellular transport as well as sealing and providing support to the epithelium. Tight junctions are the primary constituents of the epithelial and endothelial cell membranes that are responsible for maintaining the barrier between the two extracellular spaces. Tight junctions, which are responsible for cell adhesion, can restrict paracellular transport of molecules and ions and prevent the diffusion of nutrients, proteins, ions, and other molecules in the intercellular space.
Tight junctions are necessary for several physiological functions, including the prevention of ion and molecule leakage, the maintenance of cell polarity, and the regulation of the paracellular movement of solutes and water across the epithelial layer. Tight junctions are formed by the interaction between transmembrane proteins that belong to the claudin and occludin families and cytoplasmic scaffold proteins that belong to the zonula occludens family. The formation of tight junctions requires specific signals, including those from the extracellular matrix, cell-cell contact, and cytoskeleton reorganization.
The function of tight junctions is to establish and maintain a selective barrier that allows cells to regulate the transport of substances between the extracellular and intracellular spaces. The apical surfaces of epithelial cells are where the tight junctions are primarily located. Tight junctions are necessary for establishing and maintaining the selective barrier that separates the extracellular and intracellular spaces in the epithelial layer.
To know more about zonula occludens visit
https://brainly.com/question/29018288
#SPJ11
Read it carefully and answer it.
Answers
Answer:
1) types of music - independent
performance in doing homework - dependent
person - control
2) period of time - control
number of flowers - dependent
types of rose bushes - independent
Explanation:
muscle contraction that permits the muscle to shorten
Answers
The muscle contraction that permits the muscles to shorten is concentric contraction while producing force and overcoming resistance. Muscle cells are made to contract. Muscles enable movements such as walking, as well as bodily processes such as respiration and digestion.
Muscle tissue is divided into three kinds in the body: skeletal muscle, cardiac muscle, and smooth muscle. Sarcomeres, the basic unit of muscle tissue, make up skeletal muscle tissue.
The sliding filament model of muscle contraction describes how muscle contraction takes place when sarcomeres shorten and thick and thin filaments slide past each other. The energy for cross-bridge formation and filament sliding is provided by ATP. Cross-bridge establishment is regulated by proteins such as troponin and tropomyosin.
For further learning about the muscles,refer to the link below: https://brainly.com/question/14907458
#SPJ4
With the Catalase test would a false positive from the reaction between the inoculating loop and hydrogen peroxide be caused by poor specificity or poor sensitivity? Explain
Answers
The false positive result from the reaction between the inoculating loop and hydrogen peroxide in a Catalase test would be primarily caused by poor specificity.
Specificity refers to the test's ability to correctly identify those without the characteristic being tested, while sensitivity refers to the test's ability to correctly identify those with the characteristic.
In the case of the Catalase test, the aim is to detect the presence of catalase enzyme in bacteria. A false positive occurs when the test indicates the presence of catalase, even though the enzyme is not actually present. The reaction between the inoculating loop and hydrogen peroxide may produce bubbles resembling the release of oxygen gas, which is a typical positive result for the presence of catalase.
This false positive reflects poor specificity because the test is not accurately differentiating between the true presence of catalase and other factors, such as the reaction between the inoculating loop and hydrogen peroxide. Ensuring that the inoculating loop is clean and sterile can help improve the specificity of the test and minimize the chances of a false positive result.
Learn more about Catalase test here:
https://brainly.com/question/31439465
#SPJ11
Chemosynthesis _______. Question 11 options: uses energy derived from hydrocarbons and hydrogen sulfide in place of solar energy produces carbohydrates and sugars occurs around hydrothermal vents near the oceanic ridge system Both a and c are correct. All of the above are correct.
Answers
Answer:
The answer is all of the above are correct.
Explanation:
Chemosynthesis occurs in bacteria and other organisms and involves the use of energy released by inorganic chemical reactions to produce food. All chemosynthetic organisms use energy released by chemical reactions to make a sugar, but different species use different pathways. For example, at hydrothermal vents, bacteria oxidize hydrogen sulfide and add carbon dioxide and oxygen to produce sugar, sulfur, and water:
CO2 + 4H2S + O2 ⇒ CH20 + 4S + 3H2O.
Chemosynthesis is the process by which food (glucose) is made by bacteria using chemicals as the energy source, rather than sunlight. Chemosynthesis occurs around hydrothermal vents and methane seeps in the deep sea where sunlight is absent. During chemosynthesis, bacteria living on the seafloor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in seawater). Pure sulfur and sulfur compounds are produced as by-products.
removing seeds from cotton plants was a slow job until eli whitney invented the cotton gin what is cotton gin
Answers
Refer to animation: sequence assembly. How do repeated sequences in the genome complicate assembly of fragments? select all that apply
Answers
The repeated sequences in the genome complicate the assembly of fragments, and there are several reasons for this. Repeated sequences can be defined as sequences that exist in various areas of a genome, and these sequences are a significant challenge for researchers and analysts who are working on genome sequencing projects.
These repeated sequences can cause problems during the assembly of fragments for the following reasons:
1. Duplication: When the repeated sequences occur in large numbers and are relatively long, they can cause problems during the assembly process because the algorithm will not be able to distinguish between different regions of the genome that share the same sequence.
2. Overlap: Because the fragments can have multiple copies of the same sequence, it can be difficult to determine where the fragments overlap, making the assembly process more complicated.
3. Ambiguity: Repeated sequences can cause problems during the assembly process because the algorithm can become confused about which sequence belongs to which region of the genome.
To know more about genome visit:
https://brainly.com/question/30336695
#SPJ11
Substances enter any plant or animal cell by passing through which of the following structures?
1: nucleus
2: cell membrane
3: mitochondria
Answers
Answer:
cell membrane
Explanation:
because it's the outer most layer of protection
can't be nucleus as nucleus is the brain of the cell
can't be mitochondria as it is the powerhouse of the cell
Which term is credited to Hooke's scientific research?
Answers
Answer:
Cell
Explanation:
which would be more deleterious: the loss of a single nucleotide from the protein-coding region of a gene or the loss of three nucleotides in that same region?
Answers
The loss of a single nucleotide from the protein-coding region of a gene would be more deleterious.
The protein-coding region encodes for a particular protein by forming a triplet code that makes a particular amino acid. When three nucleotides are deleted, then this means that only one amino acid will be lost. The rest of the protein-coding region will be correct.
However, when a single nucleotide is deleted, then the entire coding region of the gene changes. This is because the amino acids are formed from a triplet code. A single nucleotide loss will cause the entire protein-coding region to change.
To learn more about nucleotide, click here:
https://brainly.com/question/1569358
#SPJ4
List the three components of traditional cell theory
Answers
Answer:
Cells are the basic unit of structure and function for all living things.
All organisms are made of cells.
All cells come from preexisting cells.
Explanation:
Which phrase describes one main feature of the atmosphere? protects Earth’s surface includes organisms in the air, on land, and in water consists of rocks, minerals, landforms, and Earth’s interior comprises oceans, lakes, rivers, streams, and groundwater
Answers
Answer:
A) protects earth's surface
Explanation:
took the test
The phrase describes one main feature of the atmosphere is protects Earth’s surface is correct.
Why do we need an atmosphere?Not only does it contain the oxygen we need to live, but it also protects us from harmful ultraviolet solar radiation. It creates the pressure without which liquid water couldn't exist on our planet's surface. And it warms our planet and keeps temperatures habitable for our living Earth.
Thus, protects Earth’s surface is correct.
To learn more about Earth’s click here:
https://brainly.com/question/14042561
Which of the following cells is NOT an APC? A) dentritic cells B) macrophages C) mature B cells D) natural killer cells E) None of the answers is correct; ..
Answers
E) None of the answers is correct; all listed cell types can act as antigen-presenting cells (APCs).
Antigen-presenting cells (APCs) play a crucial role in the immune response by capturing, processing, and presenting antigens to activate T cells. While dendritic cells, macrophages, and mature B cells are well-known APCs, natural killer (NK) cells are not traditionally considered APCs. NK cells are part of the innate immune system and primarily function in detecting and eliminating infected or abnormal cells through mechanisms like cytotoxicity and cytokine release.
Unlike dendritic cells, macrophages, and B cells, NK cells do not possess the same specialized antigen presentation machinery, such as MHC class II molecules, necessary for efficient antigen presentation to T cells. While NK cells can interact with APCs and participate in immune responses, their primary role lies in innate immune defense rather than antigen presentation.
To learn more about APCs, here
https://brainly.com/question/29683500
#SPJ4
If the sugar concentration in a cell is 4% and the concentration in a cell’s environment is 2%, how can the cell obtain more sugar?
Answers
For a cell to obtain more sugar the cell must use active transport to pump the sugar inside it .
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration which occur against the concentration gradient . So , it requires cellular energy to achieve this action.
Main function of active transport is involves the movement of molecules from a region of lower concentration to a region of higher concentration with help of energy in form of ATP. examples of active transport include the absorption of glucose in the intestine of the human body and the uptake of minerals or ions into the root hair cells of plants.
To learn more about Active transport , here
brainly.com/question/12133248
#SPJ1
how do particles of salt and dust affect cloud formation?
Answers
Answer:
Cloud Formation can cause cloud droplets which then affect regional climate. In creating the droplets that form clouds and lead to precipitation
As skeletal muscle is further stretched beyond the length where optimum force is developed, ________. As skeletal muscle is further stretched beyond the length where optimum force is developed, ________. the thick filaments overlap one another, thereby reducing their ability to interact with actin the thin filaments overlap one another, thereby reducing their ability to interact with myosin the thick filaments are pulled away from one another, thereby reducing their ability to interact with actin the thin filaments are pulled away from one another, thereby reducing their ability to interact with myosin the amount of calcium released by the sarcoplasmic reticulum is reduced as length increases
Answers
Answer:
the thin filaments are pulled away from one another, thereby reducing their ability to interact with myosin
Explanation:
The myofibril is the basic unit of a muscle cell. Each myofibril is composed of contractile units known as sarcomeres which may contain two different types of myofilaments: thick myofilaments and thin myofilaments. The thick filaments are known to have a constant length, and they consist especially of myosin proteins. These filaments (thick) do not extend to the ends. On the other hand, the thin filaments extend in from each end, and they are mainly composed of actin proteins that serve as tracks for the movement of myosin proteins.
how is facilitated diffusion different from diffusion
Answers
Answer:
diffusion is the movement of molecules from an area where the molecule is in high concentration to an area where the molecule is in lower concentration. ... Facilitated diffusion is the movement of a molecule from an area of high concentration to an area of lower concentration with the help of a protein channel or carrier.n:
Hiiiiii!!! It's me again, and I need help with biology again because I didn't read the dang lesson. So please helppppp!!!
Answers
Answer:
C
I don't know if my answer is correct
Explanation:
correct me if i'm wrongWhen an apple is cut and exposed to air, its flesh turns brown. this reaction is controlled by an enzyme called polyphenol oxidase. the enzyme has binding sites for oxygen and phenol, a type of organic compound in apples. the list shows the sequence of events that results in a cut apple turning brown.
oxygen is introduced into damaged plant tissue.
the enzyme polyphenol oxidase binds oxygen from the air and phenols from the apple.
the enzyme catalyzes a reaction that changes phenols into o-quinones, a different organic molecule.
o-quinones react with amino acids in the apple's flesh to produce the brown color.
a student wants to investigate whether citric acid acts as an inhibitor of the enzyme polyphenol oxidase. which experiment should the student use?
a.
obtain a solution of o-quinone, add a small amount of phenol and citric acid solutions, and observe the color of the solution.
b.
obtain a solution of polyphenol oxidase, add a small amount of citric acid, and observe the color of the solution.
c.
place freshly cut apple slices in a dish, treat some slices with citric acid, and observe their appearance.
d.
place freshly cut apple slices in a dish in an oxygen-free chamber, treat some slices with citric acid, and observe their appearance.
Answers
To investigate whether citric acid acts as an inhibitor of the enzyme polyphenol oxidase, the student should use experiment C: place freshly cut apple slices in a dish, treat some slices with citric acid, and observe their appearance.
This experiment directly tests the effect of citric acid on the browning process in apples, which is caused by the enzyme polyphenol oxidase.
Experimental Setup: The student should gather freshly cut apple slices and place them in a dish. It is essential to ensure that all apple slices are of similar thickness and cut from the same variety of apple to minimize variation.
The dish should be divided into two sections: one for the control group (without citric acid treatment) and the other for the experimental group (with citric acid treatment).
Treatment with Citric Acid: The experimental group of apple slices should be treated with citric acid. This can be achieved by directly applying a solution of citric acid to the surface of the apple slices or by immersing the slices in a citric acid solution for a specific duration.
The concentration of citric acid and the treatment time should be determined based on preliminary studies or established protocols.
Observation of Appearance: After treating the apple slices, the student should carefully observe and compare the appearance of the control and experimental groups over a designated period.
This observation can be done immediately after treatment and at regular intervals thereafter. Changes in color and browning of the apple slices should be recorded and documented.
Interpretation of Results: If citric acid acts as an inhibitor of polyphenol oxidase, the treated apple slices in the experimental group should exhibit reduced browning compared to the control group.
Citric acid, by interacting with the enzyme or its substrate, can inhibit or slow down the enzymatic oxidation process, thereby delaying the browning of the apple slices.
Controls and Replication: To ensure the validity of the experiment, appropriate controls should be included. These controls may consist of untreated apple slices or apple slices treated with a different substance that is known not to inhibit polyphenol oxidase.
Additionally, to account for variability, the experiment should be replicated multiple times with a sufficient sample size.
Further Analysis: If the initial observation suggests that citric acid has an inhibitory effect on polyphenol oxidase, additional analyses can be performed to quantify the extent of browning or measure the enzyme activity in the presence and absence of citric acid.
These quantitative assessments can provide more precise insights into the inhibitory effect of citric acid on polyphenol oxidase.
To learn more about analysis, refer below:
https://brainly.com/question/29926939
#SPJ11
What is an advantage of using models to represent the carbon cycle?
can collect data on the amount of carbon in the atmosphere at a specific time
show a complete and detailed account of every event in the cycle
can represent an entire system at once
predicts conditions that will exist during future events
Answers
An advantage of using models to represent the carbon cycle is: B. show a complete and detailed account of every event in the cycle.
A carbon cycle refers to the series of biogeochemical processes through which carbon atoms or carbon compounds are interconverted and used by living organisms within an environment, especially by transporting carbon from the atmosphere to planet Earth and then back to the atmosphere.
Basically, there are four (4) main processes that are associated with carbon cycle and these include:
Respiration.Consumption.Combustion such as burning of fossil fuels.Rock formation.A model can be used to graphically illustrate or simulate the all of the activities (events) that are taking place within the carbon cycle.
Hence, an advantage of using models to represent the carbon cycle is that it would illustrate (show) a complete and detailed account of every event in the cycle.
Read more: https://brainly.com/question/22432773
Answer:
The correct answer is C) can represent an entire system at once
Explanation:
I just took the test and I got this question correct
easy 20 points 1 quest
Answers
D, energy is transferred from producers to consumers
Explanation: Consumers, well, consume producers so that they can get energy. Therefore, the answer is D.
happy to help, have a great day! :)
For a cell with diploid number of 6, how many sister chromatids are present at prophase?
Answers
the correct answer is 12
Please help!! Giving Brainliest!!!
Answers
Answer:
B, C, F
Explanation:
To be on note, I'm not sure if B is correct or not. I hope I help somewhat.
Name one channel (gated or nongated) through which chloride ions could pass into the cell.
Answers
Passive chloride and GABA are the channels through which chloride ions could pass into the cell.
What are chloride channels?Ion channels are used by cells to regulate many cellular functions, from action potential conduction to water balance, which is sometimes achieved by using a single ion in the setting of different channels types.
Although ion channels are described as transmembrane proteins that have a “pore” which allows for the diffusion of specific ions across a concentration gradient, other channels involved in ion transport include antiporters (exchange), symporters (cotransport in the same direction) and pumps (use energy from hydrolysis of ATP).
Chloride channels are a remarkable example of this since they are involved in the control of transepithelial transport, membrane excitability, and the regulation of cell volume and intracellular and intraorganelle pH.
All of this is achievable by the use of the many different types of chloride channels, of which there are three major families: the voltage-gated chloride channels, the cystic fibrosis transmembrane conductance regulator (CFTR) and related channels, and the ligand-gated channels activated by gamma-aminobutyric acid (GABA) and glycine.
Learn more about ion channels
https://brainly.com/question/11664972
#SPJ4
Alex volunteers for an experiment being conducted by a group of neurosurgeons. As part of the experiment he is taken to a dark room and a part of his brain is activated with electricity. For a moment Alex sees flashes of light even though the room is pretty dark
Answers
Answer:
This question is incomplete; the remaining part is as follows:
Which of the following best explains Alex's experience?
a. The amygdala in Alex's brain is damaged.
b. Alex's brain has unstable dopamine levels.
c. Alex's occipital lobe is artificially stimulated.
d. Alex's Wernicke's area is artificially stimulated.
The answer is C. Alex's occipital lobe is artificially stimulated.
Explanation:
According to this question, Alex is involved in an experiment involving the electrical activation of a part of his brain in a dark room by neurosurgeons. This causes him to see flashes of light despite the dark room he was placed.
Based on this, it can be said that the part of his brain that was activated is the OCCIPITAL LOBE, which is one of the four major lobes in the cerebrum. The occipital lobe is located at the rear of the head where it functions relatedly to VISION in organisms. The occipital lobe is responsible for the processing and interpretation of visual contents.
Therefore, in this case, Alex was able to see flashes of light even in a dark room because his OCCIPITAL LOBE IS ARTIFICIALLY STIMULATED by the electrical current.
1)) The average depth of a lake is 10 meters. Do you think sunlight acts a limiting factor the same way it does in the ocean? Why or why not?
2)An area with a high population of crayfish in local lakes and rivers has begun experiencing acid rain, rain that has a pH of 3.0 - 4.0. Predict how this rain will impact the crayfish population.
Answers
Answer:
No.
Explanation:
No, the sunlight does not act as a limiting factor the same way it does in the ocean because the lake has lower depth as compared to ocean which is very deep i. e. more than 3000 meters where sunlight does not reach and we know that sunlight is very important for the survival of plants. Sunlight reach in the water about 1000 meters so plants can survive and do photosynthesis due to its low depth.
Acid rain will impact the crayfish population because acid rain decreases the pH of water and this lower pH causes death of the crayfish and also the food of crayfish and thus lower the population of crayfish due to unavailability of food..
ABC
1. The model is missing two labels. Locate where each of the following processes are being illustrated and
label them on the diagram. Write a short description of the processes.
Answers
Answer:
The correct answer is : photosynthesis (between plant and the atmospheric CO2) and cellular respiration (between deer and the atmospheric CO2).
Explanation:
1. photosynthesis
Plants and photosynthetic organisms such as few bacteria and algae in the presence of sunlight to combine carbon dioxide (C02) from the atmosphere with water (H2O) to form food in the form of sugars/carbohydrates. These end products of the process store energy. This process is known as photosynthesis.
2. Cellular respiration
It is a somewhat inverted process of photosynthesis as cellular respiration requires oxygen and releases CO2 in the atmosphere. It is the released oxygen that is used by most other organisms for cellular respiration