Final answer:
The direction of diffusion is primarily determined by the concentration gradient, with substances moving from areas of high concentration to areas of low concentration, as described by Fick's First Law.
Explanation:
The rule that governs the direction of diffusion is centered around the concept of moving from an area of high concentration to an area of low concentration. This natural process is succinctly summarized by Fick's First Law, which states that the flux of molecules, J, through a surface is directly proportional to the concentration gradient across that surface. That is, molecules will diffuse down the concentration gradient. The rate of diffusion is influenced by the concentration difference and the diffusion constant D, with the net rate being highest when the concentration gradient is steepest.
Diffusion is crucial for the transport of nutrients and wastes in biological systems. In smaller or single-celled organisms, diffusion serves as the main mechanism for these exchanges, while in larger, more complex organisms, circulatory systems have evolved to facilitate transport over greater distances quickly, supplementing the process of diffusion.
Answer these questions
1. What are three examples of technology?
2. What is observation? Why is it important to scientists?
3. What role does critical thinking play in evaluating scientific evidence?
4. How is a scientific law different from a scientific theory?
5. How do you make an inference?
6. Contrast a hypothesis & a prediction.
7. Why are ethics particularly important in specific types of scientific investigation?
8. Define biology. Name 2 other branches of science.
Answer in complete sentences
Which monomer makes up a polypeptide?
fatty acid
phospholipid
polyunsaturated fat
amino acid
amino acid is the answer
I was wondering if someone could tell me if the reason why a water fleas heart rate is effected by temperature because it cold blood orrrrr??
Consider the following food chain: garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat. What happens to the other members of the food chain if the cat is removed?
If the cat is removed the population of birds will escalate and exceed the population of the snails that sustain them.
The food chain is a depiction of the feeding relationship that exists in an ecosystem. An ecosystem is a self-supporting unit in which materials and energy are exchanged.
The food chain is as follows;
garden plants --> snails ---> birds --->household cat. We can see that removal of the cat means that the population of birds will escalate beyond the available population of snails. This will lead to competition for food among the birds within the ecosystem. The population of snails will suddenly decrease due to increase in the number of their predators. The number of garden plants will also increase due to the decrease in snail population.
Learn more:
distinguish between the cell wall and the cell membrane in a plant cell
Meiosis is responsible for which stage in the alternation of generations?
A. Gametophyte to sperm
B. Egg to zygote
C. Sporophyte to spore
D. Zygote to mature sporophyte
E. Spore to mature gametophyte
Final answer:
Meiosis facilitates the transformation of the diploid sporophyte into haploid spores in plant life cycles, playing a critical role in the alternation of generations and genetic diversity.
Explanation:
The question relates to the role of meiosis in the alternation of generations within the life cycle of plants. In the context of alternation of generations, meiosis is responsible for transforming a diploid sporophyte into haploid spores. After reaching maturity, the diploid sporophyte undergoes meiosis to produce haploid spores, which then divide by mitosis to produce the haploid gametophyte, thereby continuing the cycle of alternation of generations. This process is essential for maintaining genetic diversity and is a fundamental aspect of plant reproduction.
Therefore, the answer to the question 'Meiosis is responsible for which stage in the alternation of generations?' is C. Sporophyte to spore.
what observable characteristic could be used to identify this rock sample as gneiss
Gneiss can be identified by its foliated texture with alternating bands of light and dark minerals, and sometimes eye-shaped quartz masses known as augen; it is a high-grade metamorphic rock formed from schists or granites.
Explanation:The observable characteristic that could be used to identify a rock sample as gneiss is its distinct foliated texture. Gneiss is a high-grade metamorphic rock characterized by alternating bands of light and dark-colored minerals, typically quartz and biotite mica. The surface of gneiss may also feature augen, which are eye-shaped masses of quartz that give rise to the term augen gneiss. This rock typically forms from the metamorphism of schists or granites and is a product of high-grade metamorphism, where minerals have segregated into distinct layers due to intense heat and pressure.
Final answer:
The observable characteristic that can be used to identify the rock sample as gneiss is the presence of alternating bands of light- and dark-colored minerals.
Explanation:
The observable characteristic that can be used to identify the rock sample as gneiss is the presence of alternating bands of light- and dark-colored minerals. Gneiss is a high-grade, foliated metamorphic rock, and these alternating bands are a result of the intense metamorphism that has caused minerals to self-segregate into discrete zones. In the case of gneiss, the bands are often composed of minerals such as quartz and biotite mica.
state one change in the composition of the blood as it flows through the respiratory system
Answer:
Respiratory system includes respiratory passage and respiratory organ i.e lungs.
Explanation:
The transport of gases occurs via blood medium. The deoxygenated blood is transported from heart to the lungs for exchange or oxygenation. As the blood flows through the respiratory system the carbon dioxide is exchanged with oxygen. The oxygenated blood is then transported to heart for further circulation to various body parts. Some amount of gases get dissolved in the blood plasma and transported, whereas some amount is transported in the bound state. Oxygen and CO2 bind with hemoglobin in RBC.
The weight of a person on Earth_____.
1.decreases as the distance from the center of the Earth decreases
2.increases as the distance from the center of the Earth increases
3.decreases as the distance from the center of the Earth increases
4.temains constant no matter the distance from the center of Earth
Answer:
Your answer is- 3 decreases as the distance from the center of the Earth increases
Explanation:
The Punnett square shows the possible genotype combinations of two parents who are heterozygous for a particular trait.
What is the probability of the parents having a child who is homozygous dominant for this trait?
0%
25%
50%
75%
The probability of the parents having a child who is hzygous dominant for this trait is - 25%
In the given question, there is a particular character that has two alleles Y dominant allele and y recessive allele. Both parents are heterozygous for the trait that is encoded as Yy cross with Yy.
Cross between: Yy X YyIf both parents carry only one copy of a recessive gene, the likelihood of a child have the recessive trait is one in four.Offspring are produced: YY: 2Yy: yyHozygous would be represented for dominant - YYthere is one YY out of 4 offsprings(1/4)*100
= 25%
Thus, the correct probability would be - 25%
Learn more about:
https://brainly.com/question/5483100
Based on the laws of probability, the probability of the having a child who is h0m0zygous dominant for the trait indicated in the Punnet square is 25%.
What is the probability of the having a child who is h0m0zygous dominant for the trait indicated in the Punnet square?Assuming the dominant trait is Y and the recessive trait is y.
From the Punnet square, the offspring genotype are: YY, Yy, Yy and yy.
The child having h0m0zygous dominant trait is YY.
Probability = 1/4 = 25%.
Therefore, the probability of the having a child who is h0m0zygous dominant for the trait indicated in the Punnet square is 1/4 or 25%.
Learn more about about probability at: https://brainly.com/question/25870256
What is the difference between structural and functional proteins? And please give a definition for both!
What might happen in a community if farmers did not plant legume crops
how do scientist organize data?
All living things are made of one or more cells. Here are two types of cells: an animal cell and a plant cell. Sometimes when plants are under water stress, they wilt. Animals do not wilt! What analogy based on the plant cell structure explains wilting?
Answer:
Presence of cell wall around the plant cells.
Explanation:
An adequately hydrated plant cell is firm due to presence of turgor pressure. Loss of water results in loss of turgor and the plant cells become limp and exhibit wilting. Irrespective of loss of turgor, presence of rigid cellulosic cell wall around the plant cells maintain their structural integrity.
On the other hand, animal cells do not have cell walls around them which in turn do now allow them to maintain the structure after loss of water.
DNA is not found in the nucleus of all eukaryotic cells. True false
The assertion that DNA is not found in the nucleus of all eukaryotic cells is incorrect. In fact, the nucleus of eukaryotic cells does contain DNA, which is essential for the cell's functioning and reproduction.
Explanation:The statement 'DNA is not found in the nucleus of all eukaryotic cells' is false. DNA, which stands for deoxyribonucleic acid, is indeed found in the nucleus of all eukaryotic cells. Eukaryotic cells, as opposed to prokaryotic cells, have a nucleus that contains their DNA. This DNA is responsible for the cell's genetic information and instructions for cell functioning and reproduction. This is a basic and universal characteristic of eukaryotic cells.
Learn more about DNA in eukaryotic cells here:https://brainly.com/question/33453561
#SPJ6
which of these is a base? A.vinegar B.NaOH C.HCL D.HNO3
HELP URGENT
Answer: NaOH
Explanation:
The base can be defined as the chemical species which has the ability to denote electrons, always ready to accept protons.
These species released hydroxide ions in the aqueous solution. Example: hydroxide of alkaline earth metals like sodium hydroxide, calcium hydroxide.
These reacts with acid to form salt and water. Turns the red litmus blue. Hence, the correct answer is option B.
What are tectonic plates and how do they work?
Plate tectonics is the study of movement of the Earth's plates, called tectonic plates. A tectonic plate is a huge, irregularly shaped slab of solid rock. They are commonly composed of continental and oceanic lithosphere. Weather, as well as others, cause tectonic plates to slide, this causes a slight shake, volcanoes or earthquakes.
Describe a method you would use to separate chicken soup into other forms of matter from which it’s made
what happens a few days after fertilization (apex)
After fertilization, the conceptus forms a morula and then develops into a blastocyst that implants into the uterus. The outer cells of the blastocyst become the chorion, which releases hormones to support the developing embryo.
Explanation:Approximately 3 days after fertilization, the conceptus reaches the uterus and forms a structure called the morula. This compact mass of cells continues to divide and forms a ball of approximately 100 cells, known as a blastocyst. The blastocyst then implants into the wall of the uterus, and the outer cells develop into the chorion, which releases hormones to maintain the endometrium and support the developing embryo.
The blastocyst is a more complex structure, consisting of two distinct cell layers: the inner cell mass, which will give rise to the embryo, and the outer layer called the trophoblast. The trophoblast further differentiates into the chorion, which is a membrane that surrounds the developing embryo.
The chorion plays a crucial role in pregnancy. It releases hormones, including human chorionic gonadotropin (hCG), which helps to support the early stages of pregnancy by maintaining the corpus luteum in the ovary. This ensures a continued supply of progesterone, which is essential for sustaining the uterine lining and supporting the developing embryo.
Learn more about development and implantation after fertilization here:https://brainly.com/question/31116342
#SPJ12
I’m 1953, who developed the model shown below ?
What is responsible for telling cells how to behave
Answer: Its DNA.
Explanation:
The genetic material of which all living beings are created recieves the name of DNA (deoxyribonucleic acid). It is present in living organism cells and it is the one that provides the instructions of what to do to the cell, it gives orders as of when a cell needs to grow, to do an specific function and how that cell would respond to its environment.
If a mineral leaves a red trail when scraped against an unglazed porcelain plate,which property of mineral is being measured?
The answer is color because it leaves a red trail
What would happen to the digestive system if the muscular system stopped working?
Why do you need your digestive system to live? Explain.
Can someone please help me quick!!!
A student compared some soccer players to the atoms in the liquid state. Which of the following activities were the soccer players most likely performing?
A-Lining up next to each other
B-Huddling around each other for the ball
C-Running randomly in all directions
D-Slowly jumping up and down in their places
Two states of matter are described below.
State A: Cannot be compressed and retains its shape
State B: Highly compressible
Which combination of the state and a substance in that state is correct?
A- State A = air; State B = neon
B-State A = water; State B = number cube
C-State A = water; State B = oxygen
D-State A = piece of metal; State B = air
If a chemical change has taken place, which of these is most likely true?
A-Original substance can be easily recovered.
B-Composition of a substance is the same.
C-A completely new substance is formed.
D-An easily reversible process has taken place.
Over a period of time a student observed a small tadpole changing into a frog. Which of the following explains the physical change that takes place in this growing frog?
A-The frog can change back into a tadpole.
B-The tadpole changes its shape and form.
C-The frog is made up of a different set of elements than the tadpole.
D-Many reactions take place inside the tadpole as it changes into a frog.
Which of these is an example of recombination of atoms to form newer molecules?
A-Molding a wire of gold
B-Hammering a piece of iron
C-Tarnishing of a silver coin
D-Rolling of a sheet of aluminum
Which process changes substances into new substances with new properties?
A-Chemical Change
B-Compressibility
C-Malleability
D-Physical Change
Judy kept 250 grams of juice in the freezer. What is most likely the mass of the frozen juice formed and why?
A-250 g, mass remains same during physical change of freezing
B-500 g, mass of ice is twice the mass of juice
C-250 g, mass is conserved when matter is destroyed to form ice
D-200 g, mass of frozen liquid is less than mass of the original liquid
Anna heated 15 g of Substance A to obtain 5 g of Substance B, 4 g of Substance C, and a certain amount of Substance D. Which statement is correct?
A-The mass of Substance D was 10 g less than the mass of Substance A.
B-The mass of Substance D was 1 g greater than the mass of Substance B.
C-The mass of Substance A was equal to the total mass of Substance C and Substance D.
D-The mass of Substance A was equal to the total mass of Substance B and Substance D.
The soccer players are most likely huddling around each other for the ball. Water is in State A and air is in State B. In a chemical change, a completely new substance is formed. The tadpole changes its shape and form as it becomes a frog. Molding a wire of gold is an example of recombination of atoms to form newer molecules. A chemical change changes substances into new substances with new properties. The mass of the frozen juice formed is most likely 250 g. The mass of Substance D is 6 g, which is 10 g less than the mass of Substance A.
Explanation:The soccer players are most likely huddling around each other for the ball, which is similar to how atoms in the liquid state move and interact with each other. In the liquid state, the atoms are free to move around and can cluster together in groups.
The correct combination of states and substances is State A = water and State B = air. Water cannot be compressed and retains its shape, while air is highly compressible.
When a chemical change takes place, a completely new substance is formed. Option C is most likely true. In a chemical change, the composition of the substance changes, resulting in the formation of new substances with different properties.
The physical change that takes place in a growing frog is that the tadpole changes its shape and form. Option B is correct. The physical change involves the development and transformation of the tadpole's body into that of a frog.
An example of recombination of atoms to form newer molecules is molding a wire of gold. The gold atoms are rearranged to form a new shape or structure. Option A is the correct answer.
The process that changes substances into new substances with new properties is a chemical change. Option A is the correct choice.
In this case, the mass of the frozen juice formed is most likely 250 g, as mass remains the same during the physical change of freezing. Option A is the correct answer.
In this scenario, the mass of Substance D is 6 g, which is 10 g less than the mass of Substance A. Option A is the correct statement.
Learn more about Properties of Matter here:https://brainly.com/question/24672553
#SPJ2
Describe the different types of symmetry you can find in animals
Compare the functions of channel proteins and carrier proteins and facilitated diffusion
what caused the light in the sky (northern lights) the core
brown bears gain weight during the summer months so they can hibernate during winter. is it adaptation or acclimation
Explains how brown bears gaining weight for hibernation is an example of adaptation, utilizing fat reserves for survival during winter.
Brown bears gaining weight during summer to hibernate in winter is an example of adaptation. This behavior allows them to store energy reserves in the form of fat to survive months without food during hibernation.
Grizzly bears, like polar bears, accumulate fat during summer when food is plentiful and rely on it as an energy source when hibernating in winter. This process exemplifies how animals adapt to changing environmental conditions.
In biomes with cold climates, animals like bears utilize insulation in the form of fur and fat as a survival strategy to endure harsh winter conditions.
A soybean plant uses cellular respiration to generate usable chemical energy, released within the cell as molecules of what substance
Answer: ATP
Explanation:
A soybean plant uses cellular respiration to get energy. it can be defined as the biological phenomenon by which the chemical energy in the glucose is converted in the form of ATP.
The glucose is broken down in mitochondria in the presence of oxygen and ATP production takes place along with carbon dioxide and water.
The ATP is the energy source which provides the cells energy for all the cellular process.