Answer:
Abstract. A leaf develops from a few cells that grow, divide, and differentiate to form a complex organ that is precisely positioned relative to its neighbors. How cells communicate to achieve such coordinated growth and development is the focus of this review.
A student is asked to create models of both prokaryotic and eukaryotic cells. They will use materials to represent the cell membrane,
cytoplasm, DNA, and other internal cell structures. Which structures will be modeled in BOTH cell types? Select ALL that apply )
A) DNA
B) nucleus
C) ribosome
D) mitochondria
E) Golgi apparatus
A) and C)
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Which of the following is NOT an example of a physical change?
Answer:
Solution : Combustion of Liquefied Petroleum Gas (LPG) is a chemical change. Because it is an irreversible reaction and new products, carbon dioxide and water vapour are formed and lot of heat is also produced during the reaction.
A man walks into a bar and orders a corona and two hurricanes. The bartender replies, “that’ll be 20.20!” explain
Answer:
because 2020 had Corona and hurricanes
What is comparative anatomy and how do scientists use it to study evolution?
Answer:
Comparative anatomy has long served as evidence for evolution, now joined in that role by comparative genomics; it indicates that organisms share a common ancestor.
is an important tool that helps determine evolutionary relationships between organisms and whether or not they share common ancestors. However, it is also important evidence for evolution.
Explanation:
their you go have a nice day
The further you move away from the equator, the ________________________________ the climate is.
A. hotter
B. colder
C. same
answer:
b.colder
explanation:
this is because the sun's rays are dispersed over a larger area of land as you move away from the equator. this is due to the curved surface of the earth.
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hopefully, this helps
have a great day !!
1.2 Identify TWO types of stressors that learners are likely to experience in a post-school
destination such as a college or university, or the workplace.
Answer:
The two types of stressors are;
1. Physical stress
2. Psychological stress
Explanation:
Stress is a state of subjecting a person or thing to different forms of pressure. Stressors are factors that can lead to stress. When a person gets into an institution of higher learning or begins working with an establishment, he can face different kinds of stress. Two of them include;
1. Physical stress: This stress could be caused by excessive exertion in activities. In the school environment, attending lectures, completing assignments, and engaging in social activities could result in burn out.
2. Psychological stress: This stress can be caused by emotional and cognitive factors. Rigorous deadlines and expectations from bosses can lead to emotional drain.
Which of the following gives you information about a population’s age structure?
Group of answer choices
All individuals are found at least 10 meters away from others.
There are 25 individuals with a square kilometer.
Individuals live in rain forests in tropical South America.
There are 10 males and 15 females under the age of two.
Answer:
There are 10 males and 15 males under the age if two.
Write the lyrics of O Ramji bada dukh dina
Having Freckles (F) is dominant over not having Freckles (f). If a person that is FF has children with a person that is FF, what is the probability of their children will have Freckle
a
0%
b
25%
c
50%
d
100%
Answer:
D
Explanation:
Because there isn't a non-dominent gene.
what is formed during photosynthesis
Answer:
Glucose and oxygen is produced
Explanation:
oxygen is usually released as a by-product and the glucose made is converted to starch and stored in leaves
plus ATP molecules are formed from excess light energy and is converted to a high energy chemical compound
cell division gizmo answer key
look it up I might have what your looking for
En los seres vivos acuaticos el oxigeno es tomado del __________ y penetra a la celula por el fenomeno de ___________
Answer:
En los seres vivos acuáticos el oxigeno es tomado del agua y penetra a la célula por el fenómeno de respiración branquial.
Explanation:
La respiración es el proceso mediante el cual los seres vivos obtienen oxígeno. Es decir, la respiración implica el reemplazo del dióxido de carbono en los pulmones por oxígeno del aire, y puede ser pulmonar, branquial, traqueal o cutánea.
La respiración branquial es un tipo de respiración propia de la mayoría de los animales acuáticos y se lleva a cabo en las branquias, unas estructuras con forma de láminas que contienen vasos sanguíneos. Los animales acuáticos dispone de estos órganos que permiten absorber el oxígeno que se encuentra en el agua y eliminar el dióxido de carbono.
El agua que entra por la boca y circula por las branquias, donde el oxígeno es absorbido, pasa a la sangre y es transportado a todo el cuerpo donde se produce una respiración celular.
Es decir, en los seres vivos acuáticos el oxigeno es tomado del agua y penetra a la célula por el fenómeno de respiración branquial.
what is a flexible double-layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings
Answer:
Term Lipid Bilayer
Explanation:
What is electricity?
A
the energy produced when an object vibrates
B
the energy stored in the bonds of chanical compounds
с
the energy produced by electrons
the energy of motion
Describe the importance of a hypothesis in scientific inquiry.
Answer:
The fundamental concept of a theory is that there is no predetermined conclusion. A main feature of this phase of the experimental process is deriving conclusions from theories regarding the outcomes of possible studies and then conducting certain experiments to see if the predictions are supported.
Explanation:
A hypothesis is crucial in scientific inquiry as it serves as a testable and falsifiable explanation or prediction for a specific phenomenon or observation.
It provides a structured approach to investigating a research question and guides the design of experiments and data collection.
By formulating a hypothesis, researchers set a clear direction for their study and establish a basis for drawing conclusions based on evidence.
If the hypothesis is supported by data, it strengthens the understanding of the subject matter.
Alternatively, if the data refute the hypothesis, it encourages further exploration and refinement of scientific knowledge, promoting the advancement of understanding and discoveries in various fields.
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Please help with punnet squares problem! I'm not understanding what the answer is thanks
What happens to water (H2O) and carbon dioxide (CO2) during photosynthesis?
Answer:
Carbon dioxide turns into glucose and water turns into oxygen
Explanation:
carbon dioxide is combined wih hydrogen atoms in the presence of ATP molecules to form glucose
water molecules split by sunlight energy to form oxygen gas and hydrogen atoms . the oxygen obtained from water is released by the leaf as a by- product
how might the function of an ecosystem be affected is living and nonliving things could not interact with each other!
Answer:
Energy and nutrients are cycled throughout all the different components of the ecosystem. The non-living components like heat and nutrients are called abiotic factors. Both biotic and abiotic factors contribute to an environment's health. Biotic factors include plant productivity and animal behavior.
how does photosynthesis keep humans alive?
Answer:
Because photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere.
Explanation:
So we need it to breath basically.
1. A student is completing a Punnett square for a trait (X/x) that is autosomal and inherited by the dominant allele. The father does not have it (xx), but the mother does (Xx). If they had two children, a son and a daughter, what would the completed Punnett square look like (i.e., would the son have the trait, would the daughter have the trait)?
A. Both children would not inherit the trait.
B.Both children would inherit the trait.
C. Each child has a 50% chance of inheriting the trait.
D. One child would inherit the trait and one child would not.
Answer:
C
Explanation:
autsomsal means that it is not x-linked/ realted to gametes. Dominate means that it needs only one X to get the trait
Using the punnet square
X x
x Xx xx
x Xx xx
there is 2 X which means there is a 50% change that their child will get the trait
In the punnett square analysis, each child has a 50% chance of inheriting the trait.
The mother Xx has the trait and the father xx doesn't.
Using the punnet square
Xx xx
Xx Xx xx xx
There are just two traits which are Xx and xx which are in equal frequency
and proportion.
This therefore means that the children have a 50% chance of getting the trait.
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6) What new thing have you been doing to stay stress-free and positive during the pandemic
. Some people taste the chemical phenylthiocarbamide (PTC) as intensely bitter, while others cannot taste it at all. PTC is similar to chemicals in broccoli, Brussels sprouts, and cabbage, among other plants. Tasting PTC is a dominant trait; non-tasting is recessive. About 51% of people of European descent are tasters. If all of the assumptions of Hardy-Weinberg equilibrium are met, then among people of European descent... a) What is the frequency of the non-taster phenotype
Answer:
The frequency of the non-taster phenotype among people of European descent is 49% or 0.49
Explanation:
Let us assume that the allele for tasting PTC is T, while that for not tasting PTC is t.
According to the Hardy-Weinberg equation : p² + 2pq + q² = 1
Also p + q = 1
Where p² is the frequency of individuals with the TT genotype for tasting PTC,; wow is the frequency of individuals with the heterozygous allele for tasting PTC, while q² is the frequency of the individuals with tt genotype expressed as the non-taster phenotype since the allele for tasting is dominant over that of the non-taster.
From the information provided 51% of people of European descent are tasters. Also, tasting PTC is dominant over non-tasting. This implies that individuals with TT genotype and Tt genotype will be phenotypically expressed as tasters.
Therefore p² + 2pq = 51% or 0.51
q² = 1 - p² + 2pq
q² = 1 - 0.51
q² = 0.49 or 49%
The frequency of the non-taster phenotype among people of European descent is 49% or 0.49
The order of amino acids determines the structure and overall function of a protein. (True or False)?
Answer: TRUE
Explanation:
tbh not 100% sure
PLEASE WRITE IN OWN WORDS, HELP!
Answer:
Evolution means change in the physical features of an organism.
Explanation:
Evolution means change in the physical features of an organism. Evolution occurs in the population of an organisms due to various factors such as mutation, non-random mating and natural selection. Nonrandom mating occurs when an organism prefer mating with particular superior organisms or with the similar organism. Mutation in the genetic makeup of an organism is also responsible evolution. this mutation occurs when an organism experience ultraviolet radiation from the sun, or also occur if an error in DNA during cell division. Gene flow is also known as gene migration is the transfer of genetic material or traits from one population to another when the organism is migrated to another environment. Some organisms are selected naturally because they have the potential to survive in that environment so they survive and that doesn't adopt itself to the environment, it will extinct from the environment.
List as many examples of types of proteins, and give a brief definition of each
1. Structural proteins, maintain cell shape, akin to a skeleton, and compose structural parts of the body, like cartilage and bone in vertebrates.
2. Storage proteins house critical elements that your body needs.
3. Hormonal proteins basically act as your body's chemical "messengers."
4. Enzymes, which are biological catalysts needed for chemical reactions.
What is the current genetic diversity of koalas?
Answer:
low in modern conditions.
Explanation:
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Answer:
first quarter neap
second quarter spring
third quarter neap
fourth quarter spring
Scientists are monitoring the pH of oceans. Which of these are they most likely studying?
A. the population of polar bears
B. the health of coral colonies
C. the level of carbon dioxide in the air
D. the rise of sea level
Answer:
B. the health of coral colonies
Explanation:
Answer:
ANSWER is B , The health of coral colonies
What conditions are necessary for rocks to melt?
Answer:
In explanation.
Explanation:
The rock is pulled down by movements in the earth's crust and gets hotter and hotter as it goes deeper. It takes temperatures between 600 and 1,300 degrees Celsius (1,100 and 2,400 degrees Fahrenheit) to melt a rock, turning it into a substance called magma (molten rock).
The rock can be melted when high pressure and high temperature are applied to it, and due to the compression relaxation, the rock melts. The different types of rocks need different temperatures.
What is the effect of temperature on different substances?Temperature plays an important roles in different substances, such as high and low temperatures, each with its own set of tasks. The high temperature can melt the solid substance into a liquid, and further heating converts the liquid into gas. Because of the high pressure and temperature in the earth's core, the rock is in a molten state, but when it comes out of the earth's core, after solidifying, it converts into solid rock. The low temperature converts the liquid into a solid, and food preservation is carried out by this process.
Hence, the rock can be melted when high pressure and high temperature are applied to it, and due to the compression relaxation, the rock melts.
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how are karyotypes made?
Answer: A karyotype is simply a picture of a person's chromosomes. In order to get this picture, the chromosomes are isolated, stained, and examined under the microscope. Most often, this is done using the chromosomes in the white blood cells. A picture of the chromosomes is taken through the microscope.
Explanation:
Karyotypes are prepared from mitotic cells that have been arrested in the metaphase or prometaphase portion of the cell cycle when chromosomes assume their most condensed conformations. A variety of tissue types can be used as a source of these cells.
Explanation:Hope this was helpful and have a great one!
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