Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type.
Stem cells can become a variety of types of cells, while differentiated cells like red blood cells are fully specialized cell types. ... A stem cell produces a mesoderm cell, which can then further differentiate to form a muscle stem cell. From there it differentiates into a smooth muscle cell.
During the prophase stage, loosely arranged stands of chromosomes become coiled, shortened and distinct.
True
False
Answer:
False
Explanation:
Prophase is the first phase of mitosis, the chromosomes are visible in this stage. The chromosomes are distinct but they are not shortened.
Question 2 of 10
Which statement best describes a surface wave?
A. It forms when electric and magnetic fields vibrate perpendicularly
to each other.
B. It occurs at the boundary of two different mediums, such as air
and water
C. It forms when matter vibrates in a direction that is perpendicular
to the direction of the motion of the wave.
D. It forms when matter vibrates in a direction that is parallel to the
direction of the motion of the wave.
SUBMIT
Answer:
The answer B.
Explanation:
I took AP EX quiz.
The statement best describes a surface wave is it occurs at the boundary of two different mediums, such as air and water. The correct option is B.
What is the surface wave?Surface waves are the mechanical waves that spread along the boundary between many media. An example of a surface wave is a gravity wave.
Surface waves run along the medium, such as water and air, or the interface between two liquid surface
Thus, the correct option is B. It occurs at the boundary of two different mediums, such as air and water.
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please help i am about to fail this class off i don’t get an A
Answer:
Same for spanish here i'll help u of u help me
Explanation:
Answer:
Mitosis
Explanation:
Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.
Which of the following is arranged in the order of increasing levels of organization?
A
Molecule, atom, cell
B
Cell, atom, molecule
с
Atom, molecule, cell
D
Cell, molecule, atom
Answer:
c
Explanation:
I assume you mean going from smallest to biggest a atom is the smallest, then a molecule, then a cell
The following that are arranged in the order of increasing levels of the organization are Atom, molecule, and cell. The correct option is c.
What is the level of organization?The level of organization shows the making up of different matters from the basic unit. The basic unit of all matter is an atom. The atom is the smallest and basic unit of matter.
The level of organization in its increasing order will be from the smallest to the largest unit. The smallest unit is an atom, atoms make up molecules and substances. The molecules join together to form cells or other compounds.
So the level of organization from largest to smallest will be atoms, molecules, and cells.
Thus, the correct option is c. Atom, molecule, cell regarding the level of organization from largest to smallest.
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Which of the following are correct when comparing aerobic respiration and anaerobic respiration
Answer:
where is the following?
Explanation:
QUESTION:
Which of the following accurately compares aerobic and anaerobic respiration?
Answer: CORRECT (SELECTED)
Aerobic respiration requires oxygen, and anaerobic respiration does not.
Explanation:
Aerobic respiration occurs in the presence of oxygen. Anaerobic respiration does not require oxygen to proceed.
Which government agency monitors the cleanliness of food and ensures that no food-borne illnesses arise?
O Food and Drug Administration (FDA)
United States Department of Agriculture (USDA)
O Environmental Protection Agency (EPA)
O Bureau of Land Management (BLM)
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Answer:
Food and Drug Administation (FDA)
Explanation:
I read the lesson. (Its not hard)
Answer:
.∵∴yeah, i agree with them. Thats the only one that fits.∵∴
Explanation:
In the water cycle, the sun provides
A. energy for water to evaporate from oceans, lakes and rivers.
B. water for evaporation to happen.
C. water for condensation to happen.
D. energy to produce electricity.
Answer:
peperoni is GARROS
Explanation:
ribosomes are found floating in the cytoplasm and embedded in the endoplasmic reticulum. their job is to assemble?
Answer:
Ribosomes link amino acids together in the order specified by the codons of messenger RNA molecules to form polypeptide chains. The function of ribosomes is to make proteins for the cell.
which trophic level has tge least number of organisms
Answer:
tertiary consumers
The trophic level that has the least biomass is usually the tertiary consumers.
Jake has become very anxious ever since he started taking harder classes in his major.
The university's counselor diagnosed him with an anxiety disorder. Compare and contrast how the behavioral, humanistic, and cognitive approaches would view the origins and treatment of Jake's anxiety. Then, describe how psychologists view each of
the three approaches today."
The behavioral, humanistic, and cognitive approaches provide different perspectives on the origins and treatment of Jake's anxiety.
The behavioral approach would view Jake's anxiety as a learned response that has been reinforced over time. They might suggest that Jake's anxiety is a result of negative experiences or associations with his academic performance, leading to increased anxiety symptoms. Treatment would focus on identifying and modifying maladaptive behaviors through techniques such as exposure therapy and behavior modification.
The humanistic approach would emphasize Jake's self-actualization and personal growth. They might view his anxiety as a result of a discrepancy between his self-concept and the challenges he is facing in his major.
Treatment would involve providing a supportive and empathetic environment where Jake can explore his feelings and values, with the goal of helping him align his personal goals with his academic pursuits.
The cognitive approach would focus on Jake's thoughts and beliefs about his academic performance. They would suggest that his anxiety stems from negative and distorted thinking patterns, such as excessive self-criticism or catastrophic thinking.
Treatment would involve cognitive restructuring, helping Jake identify and challenge irrational thoughts, and developing more adaptive and realistic thinking patterns.
In contemporary psychology, these approaches are not seen as mutually exclusive, but rather complementary. Psychologists recognize that a multidimensional approach, integrating elements from different perspectives, can provide a more comprehensive understanding of psychological issues.
Treatment approaches often combine techniques from various approaches to address the unique needs of each individual, emphasizing a holistic and personalized approach to mental health.
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What are the source of air pollution and how this pollution affects the turan heath?
The top of the leaf in this picture has a wax layer called a cuticle how does the cuticule layer help a leaf
Answer:
Cuticle helps to prevent from loss of water vapour. It is also to trap the sunlight.
helen is studying the growth of different types of plants she planted two of each type of plant in locations with different levels, full sun, partial shade, and full shade. for five weeks helen records growth by counting the number of new leaves on each plant. which of the following statements correctly describe the test ( independent ) and outcome ( dependent ) variable in helens experiment
Answer:
The amount of shade given is the independent variable, while the amount of leaves that grow on each plant is the dependent variable.
Explanation:
The amount of leaves that grow on the tree is determined by how much sun the plant is receiving.
Choose the true statement(s) about mutations. To be marked correct, you'll need to select all true statements, as there may be more than one correct answer.
A. Mutations can provide an evolutionary benefit.
B. Mutation leads to genetic and phenotypic variation within a species.
C. In humans, somatic cell mutations are not passed to offspring.
D. Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.
Answer
All four options ( A,B,C,D ) are true about mutations.
Explanation:
A- Mutation can provide an evolutionary benefits
As mutation helps in creating DNA sequence ,new allele(variant of gene) for a specific gene , thus mutations is known to be the first step of evolution.
B- Mutation leads to genetic and phenotypic variation within the species.
In mutation, genetic variation (difference between individual/population) takes place as new alleles are created ,random matings ,fertilization and during meiosis , recombination of homologous chromosomes. One of the type of mutation called gene mutation give rise to genetic variations.
Its an exceptional case of phenotypic variations ,as mostly there is no effect of mutation on phenotypic variation. Very few mutations lead to phenotype variation and in case mutation takes place in phenotype variation ,making the organism well suited to the environment, the a rapid change in the characterstics of the individual species is seen.
C- In humans, the somatic cell mutation are not passed in offsprings.
Somatic cells are present in all over the body except in the cells that give rise to gametes( ie. egg and sperm cells) and produces offsprings . Thus somatic cells are absent in gametic cells ,therefore mutation cannot be passed to human's offsprings or children.
D- Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.
Due to their fast growth ,bacteria evolve quickly and share genes with each other and even between the species ,also the mutation that are helpful spread faster in bacteria.
In humans, the silent mutation in human cells cause many genetic disorders like Laron dwarfism. About 99.8% genes are silent mutation.
Trading the ability to do one thing for the ability to do another is called
A. Adaptation
B. Camouflage
C. Metamorphosis
D. Fitness Cost
Answer:
Scientists call this trade-off a fitness cost, or trading one ability for another that impacts the probability of successfully reproducing that allows the living thing to survive and reproduce. Mollie doesn't get very sick, but the cost was losing the ability to swim well.
Explanation:
Answer:
A
Explanation:
An adaptation is any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment
HELP ME WITH 13 AND 14 PLZ
Answer:
Explanation:
13 is products and for 14 i cant see the whole diagram
A bacterium is best described as a
A. type of eukaryote
B. type of virus
C. nonliving particle
D. unicellular prokaryote
Answer:
D.unicellular prokaryote
Explanation:
Answer:check the picture guys
Explanation:
A scientist is investigating cell transport.She observes molecules being transported into a cell through proteins present in the cell membrane. These proteins do not use energy to transport the molecules. Which of the following best explains the type of cell transport observed by the scientist?
A. Active transport because the membrane proteins were used
B. Diffusion because the molecules were entering the cell
C.Facilitated diffusion because the proteins were not using energy
D.Osmosis because the molecules were moving against the concentration gradient
Answer: C
Explanation:
A type of facilitated transport called facilitated diffusion involves the passive movement of molecules along their concentration gradient, this second molecule is an integral membrane protein. Thus, option C is correct.
What is diffusion?Diffusion is the overall net movement of anything from a higher concentration to a lower concentration. A gradient in the Gibbs free energy or chemical potential drives diffusion.
A substance diffuses when it moves from a region of high concentration to one of lower concentration.
When particles in liquids and gases randomly collide and disperse, diffusion takes place. For living things, diffusion is a crucial mechanism because it governs how molecules enter and exit cells.
Cells depend on diffusion to get the nutrients they need to develop and obtain energy, as well as to rid themselves of waste materials.
Therefore, facilitated transport do not use energy to transport the molecules.
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Which are ways of showing probability? Select 4 options. 50% 557 1 × 104 25% 3/4 7/8
Answer:
Option: A and D are the correct answer.
A. 50% and D. 25%
Explanation:
We know that the probability of an event is the chance of occurring of an event.
The probability of an event always lie between 0 and 1.
It is equal to zero if the event will never occur and is equal to 1 if the event is certain to occur.
Also, the probability could be in ratio or it could be in percentage and the percent may be between 0%-100%
Hence, in the given options:
B) 557 is incorrect as the probability is greater than 1.
c) 1×104=104 is incorrect since the probability is greater than 1
Hence, the correct options are:
A. 50%
and D. 25%
Answer:
1,3,5,6
Explanation:
Technology can have good and bad effects. What is a bad effect of spraying
pesticides on crops with the use of airplanes?
A. It increases food production
B: it is sometimes sprayed too far from the crops
C. It is decreases the cost of spraying pesticides
D. It lowers the cost of food
Answer: B
Explanation: The others are all good effects of spraying pesticides. B is correct because it is a negative effect of doing so, and I know for a fact that pesticides are very bad for things that they aren’t meant for.
Select the correct answer from each drop down menu.
The force of gravity between two object depends on ___ and ___
Blank1:
A.Mass
B.Momentum
C.velocity
Blank2:
A.Color
B.Height
C.Distance
Answer:
Try mass and distance
Explanation:
Several temperature-sensitive mutant strains of E. coli display the following characteristics.
Mutant (a): Newly synthesized DNA contains many mismatched base pairs.
Mutant (b): Okazaki fragments accumulate, and DNA synthesis is never completed.
Mutant (c): No initiation occurs.
Mutant (d): Synthesis is very slow.
Mutant (e): Supercoiled strands remain after replication, which is never completed.
What enzyme or function is being affected in Mutant (a), causing many mismatched base pairs?
a. No DNA repair
b. No Primase activity
c. No DNA gyrase activity
d. Only DNA polymerase I activity
e. No DNA ligase activity
The enzyme DNA polymerase I is being affected in mutant (a), causing many mismatched base pairs. Thus, the correct option is C.
What is the role of DNA polymerase I?DNA polymerase I (pol I) processes RNA primers during the lagging strand synthesis and also fills small gaps during the DNA repair reactions. However, it is still unclear how DNA polymerase I and polymerase III work together during the process of replication and repair or how the extensive polymerase I processing of Okazaki fragments is in vivo.
In bacteria, all the three DNA polymerases that is I, II and III have the ability to proofread the DNA molecule, using 3'→5' exonuclease activity in the cell. When an incorrect base pair is recognized by this enzyme, DNA polymerase reverses its direction by single base pair of the DNA molecule and excises the mismatched base pair.
Therefore, the correct option is C.
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Which of the following best describe the process of energy conversion that takes place in the mitochondria?
A. The energy in glucose molecules are transferred to the phosphate bonds in ATP B. Energy needed to bond carbonate
C. The energy in water molecules and solar energy activate the anaerobic cycle D. Oxygen molecules release energy
Answer:
A. The energy in glucose molecules are transferred to the phosphates in ATP
Explanation:
The best description of the process of energy conversion that takes place in the mitochondria is the energy in glucose molecules is transferred to the phosphate bonds in ATP. The correct option is a.
What is energy conversion?The mitochondria in the cell use oxygen to transform the chemical energy that comes from the food we eat into useful energy. Plant cells need chloroplasts to facilitate photosynthesis. The mitochondria are the heart of the cell, converting energy throughout.
When burning wood, heated other stimulated atoms cause the log to release stored potential energy (in the form of chemical energy). Combustion is the name of the chemical reaction that calls for oxygen.
Therefore, the correct option is a. The energy in glucose molecules are transferred to the phosphate bonds in ATP.
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What must be present in order for natural selection to occur in a population?
a
Variation
b
Adaptation
c
Ability to choose traits
d
Unlimited resources among species
PLEASE HURRY
Answer:
adaptation
Explanation:
Think of an activity you did today. Describe at least five different parts of your brain and how they were involved in that activity.
Listening To Music - Temporal Lobe
Speaking To A Friend - Frontal Lobe
Watched TV - Occipital Lobe
Reading A Book - Parietal Lobe
Breathing - Brain Stem
which macromolecule are broken down to make enzymes and structures?
( REWARD AND BRAINLIEST )
Proteins
Fats
Carbohydrates
Lipids
A semipermeable tube containing 4% Cacı, 9% sucrose, and 10% ovalbumin is suspended in. a solution with the following composition: 10% CaCl2, 10% sucrose, and 40% ovalbumin. Assume
that the tube is permeable to all substances except ovalbumin, which is a large protein.
Use the following answer choices to state the movement of each solution:
(A) a net movement into the tube
(B) a net movement out of the tube
(C) no net movement.
A. Sucrose:
B. Ovalbumin:
C. Water:
D. Caci:
Answer:
Sucrose, CaCl2 = A
Water = B
Protein = C
Explanation:
Why we have a net movement out of the tube?
Because the osmotic pressure is higher out the tube.
That is due because of the greater presence of osmotically actice compounds.
Take a look:
Tube:
4% of CaCl2 > ([tex]Ca^+ + 2Cl^-[/tex])x 0,04
9% of Sucrose > (Sucrose)x 0,09 - Sucrose does not dissociate or ionize
10% of Protein > Does not matter it quantity, because she it's not a osmotic compound.
Solution:
10% of CaCl2 > ([tex]Ca^+ + 2Cl^-[/tex]) x 0,1
10% of Sucrose > (Sucrose) x 0,1
As both CaCl2 and Sucrose are in a higher concentration, we can understand that the osmotic pressure is greater in the Solution side, making the solution of the tube to migrate to her.
But maybe talk does not help. In the annex you can see a drawing of a possibility for this situation.
______
EDIT: I just saw that your question wasn't asking exatcly what I was trying to solve.
But anyway, by the same motives I already said, the answers are:
Sucrose and CaCl2 are going from the down tube - I know it does not sound possible, but imagine that they are really close ore even that they are side to side in the ground -, to the upper tube. That happens because of the EF that I said.
In the other side, water are leaving the uper tube, to equilibrate the concentration of compouns in both systems.
The protein can't move toward any tube, because as the question said, it is far bigger than the spots in the semipermeable membrane.
Also, it doest not has sufficiently interaction trough the other compounds.
Final answer:
Sucrose, CaCl2 = A
Water = B
Protein = C
In order for cells to grow and develop, they undergo what process?
Answer:
In cells. The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.
Which skin layer contains the protein melanin?
In a dihybrid cross between two pea plants, one parent is green pod-purple flower (GgPp). The other parent’s genotype is unknown. The phenotype f ratio of their offspring is (1 Green Pod-Purple Flower : 1 Yellow Pod-Purple Flower). What is the genotype of the unknown parent?
The unknown parent's genotype in the dihybrid cross is likely GgPp. This genotype would result in a 1:1 phenotypic ratio of green pod-purple flower to yellow pod-purple flower offspring.
In a dihybrid cross, we consider two independent traits. In this case, the traits are pod color (green or yellow) and flower color (purple). The known parent's genotype is GgPp, where G represents the dominant allele for green pod color, g represents the recessive allele for yellow pod color, P represents the dominant allele for purple flower color, and p represents the recessive allele for non-purple (white) flower color.
Since the phenotypic ratio of the offspring is 1 green pod-purple flower : 1 yellow pod-purple flower, we can infer the possible genotypes of the unknown parent. The observed phenotypic ratio suggests that both parents contribute equally to the offspring's traits. Therefore, the unknown parent likely carries the same genotype, GgPp.When the unknown parent's genotype is GgPp, it means that it can produce two types of gametes: GP and gP. The known parent, GgPp, can also produce two types of gametes: GP and gP. The cross between these parents can result in four possible genotypes for the offspring: GGPp, GgPp, Ggpp, and ggPp. However, only two of these genotypes correspond to the observed phenotypic ratio: GgPp (green pod-purple flower) and ggPp (yellow pod-purple flower).Therefore, the genotype of the unknown parent is likely GgPp, which produces the desired 1:1 phenotypic ratio of green pod-purple flower to yellow pod-purple flower in the offspring.
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