Answer:
1) RNA polymerase unzips DNA and frees RNA nucleotides join DNA to form mRNA
2) mRNA is transported from the nucleus of the cell to the ribosomes of the cell
3) mRNA joins the ribosome, and the anti codons from tRNA join mRNA to form a chain of amino acids
4) A chain of amino acids is formed from the peptide bonds, creating a protein.
5) Once the protein is made, the gene for a particular trait is expressed.
Answer:
Step 1: RNA polymerase unzips DNA and free RNA nucleotides join DNA to form mRNA.
Step 2: mRNA is transported from the nucleus of the cell to the ribosomes of the cell.
Step 3: mRNA joins the ribosome, and the anticodons from tRNA join mRNA to form a chain of amino acids.
Step 4: A chain of amino acids is formed from peptide bonds, creating a protein.
Step 5: Once the protein is made, the gene for a particular trait is expressed.
Explanation:
STEP 1:
During the process of transcription, RNA polymerase unzips DNA and forms mRNA.
STEP 2:
mRNA formed in nucleus then moves out to ribosomes in the cytoplasm.
STEP 3:
This mRNA undergoes translation process and tRNA transfers amino acids and forms chains of amino acids.
STEP4:
Amino acid chains are joined by peptide linkages to form proteins.
STEP 5:
Formation of protein results in the expression of that particular trait whose gene has undergo transcription and translation.
in general, characteristics that help an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?
Answer:
Natural selection.
Explanation:
Natural selection means that those with good phenotypes are more likely to survive and reproduce. On the other side of the same coin, organisms with less beneficial characteristics are less likely to survive. Because of this, they can't pass their genetic information down, making it less common, and vice versa.
Natural selection is characteristics that help an organism survive and reproduce become more common in a population over time.
Who proposed the theory of natural selection?
The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species
Natural selection means that those with good phenotypes are more likely to survive and reproduce. On the other side of the same coin, organisms with less beneficial characteristics are less likely to survive. Because of this, they can't pass their genetic information down, making it less common, and vice versa.
Learn more about natural selection here:
https://brainly.com/question/9830102
#SPJ2
what prevents natural selection from removing vestigial structures from a species?
a) they have not yet become useful
b) they were never harmful or beneficial to a species
c) they are not genetic traits
d) they are neither harmful nor beneficial to individuals
how are meiosis and mitosis different
Answer:
Mitosis produces 2 daughter cells which are genetically identical to the parent cell. Each daughter cell is diploid (contains the normal number of chromosomes). This is the result of DNA replication and 1 cell division. ... Meiosis is used to produce gametes (sperm and egg cells), the cells of sexual reproduction.
Explanation:
Answer: Meiosis is used to produce gametes (sperm and egg cells), the cells of sexual reproduction. While Mitosis produces 2 daughter cells which are genetically identical to the parent cell, which is the result of DNA replication and 1 cell division.
Which one of the following human organ systems is mainly made up of glands and hormones? A. Endocrine system B. Excretory system C. Nervous system
Answer:
A. Endocrine
Explanation:
The endocrine system is a collection of glands that produce the hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among all the other things
Endocrine system is the human organ system that is made up of glands and hormones.
Option A
Explanation:
The "endocrine system" is responsible for secretion of hormones inside the body and it is made up of endocrine glands such as thyroid glands, pituitary glands, pineal gland, adrenal gland, pancreas, ovaries and testes. These glands releases hormones into the blood to target organs which are situated at a distance or into nearby tissue to target nearby cells or to target self. Endocrine glands works by forming negative and positive feedback loops to regulate the proper functioning and effect of the hormone on the target organ or cells and for control the production of hormone from the glands itself.
Please help! No plagiarizing please! 6th grade work! Easy and 100 points!! Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, etc.).
Describe the parts of a cell and their primary function.
Hello, I did this project in seventh grade, and I still have my notebook from it! Here's the answer I wrote:
A cell is like a restaurant.
The cell membrane controls what goes in and out of the cell. It is like a door because it get things in and out of the cell, much like a door gets people in and out of a restaurant.
The chloroplast makes food for the cell by photosynthesis. It is like the chef because it makes and provides food for the cell, much like a chef makes food for the customers.
The nucleus controls the activities of the cell. It is like the kitchen becuase it holds information in the cell, and the kitchen holds all of the recipes.
The endoplasmic reticulum transports materials around the cell. It is like a waiter because it transports things around the cell, like a waiter transports food around the restaurant.
The mitochondria give the cell energy by breaking down food. It is like a customer becuase it breaks down food and provides energy to the cell, much like how customers eat food that the chef makes and then pay for it, so the business does well.
The cytoplasm holds the organelles and is where chemical reactions take place. It is like the building because it holds all the organelles in the cell, and the building holds all of the restaurant activity.
The vacuole stores food, water, and waste. It is like the refrigerator because both store water and food.
The Golgi bodies pack, fold, and deliver proteins. They are like the take-out boxes in a restaurant because they hold proteins, and take-out boxes pack and hold food.
I really hopes this helps!
Answer:
A Cell Compared to a Car
E.R. = Wires and Pipes
Mitochondria = Engine
The ER is like the wires and pipes in a car because the ER is the highway of the cell, and the wires and pipes let things travel through them.
The mitochondria is like the engine because the mitochondria is the powerhouse of the cell, and the engine is the powerhouse of the car.
Golgi Apparatus = Wheels
The Golgi Apparatus would be the wheels because they both send out commands from the controller.
Cell Wall = Car Frame Membrane = Door
Nucleus
The Cell wall would be the car frame because it protects the car.
The membrane would be the door, because they both lets objects in and out.
The Nucleus would be the driver because the nucleus is the controller of the cell, and the driver controls the car.
Cytoplasm = Air Bags
Lysosomes = Exhaust Pipe
The cytoplasm is like the air bags because they both protect all of the organelles inside the cell/car.
Lysosomes are like the exhaust pipe because they both get rid of excess waste.
Ribosomes = Gasoline
The Ribosomes are like the Gasoline because Ribosomes create proteins to feed the cell, and Gasoline feeds power to the car.
Explanation:
hope this helps
stay safe:)
bainliest is appreciated :)))
Determine whether each statement below describes traditional or modern classification.
TRADITIONAL OR MODERN CLASSIFICATION
based on similar appearance
based on evolutionary relationships
known as Cladistics
known as Linnaean classification
Answer:
TRADITIONAL CLASSIFICATION: based on similar appearance ; known as Linnaean classification
MODERN CLASSIFICATION: based on evolutionary relationships; known as Cladistics
Explanation:
The older classification systems were based on the morphological similarities between the organisms. One such classification was given by Linnaeus who classified plants based on the morphology of flowers and fruits.
On the other hand, the present day classification system lay more stress on evolutionary relationships of organisms. Cladistics is the system of classification that classifies organisms based on their common ancestry and does not take into consideration of morphological similarities.
the difference between amphid and plasmid
Answer:
The main difference between plasmid and amphid is that plasmid is an extra-chromosomal element of mainly bacterial cells whereas a amphid is a vehicle that carries foreign DNA molecules into another cell .
Explanation:
Which most likely could cause acceleration? Check all that apply.
A flat road
Wind
Water movement
A hill
A stop light
Explanation:
Acceleration of an object is defined as the rate of change of velocity. The acceleration of an object is a vector quantity. It is caused whenever there is change in speed and the change in direction of motion of an object.
Option (1) : On a flat road, there is no chance for the change in speed or the change in direction of an object until the driver wants. As a result, on a flat road no acceleration is caused.
Option (2) and (3) : In case of Wind and water movement, it can change the speed of an object. As a result, vehicle will accelerate.
Option (4) : As the hill have curved roads, the direction of a vehicle changes. As a result, acceleration is caused.
Option (5) : A stop light, A stop light consists of three lights i.e. red light, green light and yellow light. As a light turns to red, the vehicle will decelerate and as it turns green, the driver will accelerate the vehicle.
Hence, Wind, water movement, a hill and a stop light can cause acceleration.
which would stop a plant from being able to grow?
Answer:no air food water
Explanation:
Answer:
not getting enough sunlight
Explanation:
I believe this is the answer your looking for ape-x
what are the main causes of global warning
Answer:
the main cause of global warming is humans it speeding up quickly due to our bad habits
Explanation:
1. Explain how an ice cube left out on a counter becomes a small puddle of water.
Final answer:
An ice cube left on a counter melts into water due to heat transfer from the surrounding environment. This causes the water molecules within the ice to gain energy, move faster, break their bonds, and ultimately change from a solid to a liquid state.
Explanation:
When an ice cube is left out on a counter, it turns into a puddle of water through the process of melting. This occurs because heat is transferred from the surrounding environment, such as the warmer air in the room or the heat from the counter, to the ice cube. As the ice absorbs heat, the water molecules gain energy and begin to move faster, breaking the hydrogen bonds holding them together in the solid structure of the ice.
The transfer of heat causes the ice cube (H₂O(s)) to undergo a physical change to become liquid water (H₂O(l)), as represented by the thermochemical equation: heat + H₂O(s) → H₂O(l). The energy transfer increases the entropy of the system, as the water molecules in the liquid state are more disordered than when they were in the solid state.
Even if the room temperature is below the freezing point, an ice cube can still transform into water due to the phenomenon of sublimation, where the solid ice directly converts into water vapor without becoming liquid first. However, this process is very slow and isn't the primary method of transition when an ice cube melts on a counter. Understanding these changes at a molecular level illustrates the fascinating properties of water and its phase transitions.
Lydia is walking in the woods at night to observe owls. She hears a rustling behind a tree, which startles her and causes her body to go into a fight or flight response as the sympathetic nervous system is activated. What is likely to happen to her digestive system during this response?
A.
The enteric nervous system will speed up digestion to use energy.
B.
The peripheral nervous system will speed up digestion to use energy.
C.
The peripheral nervous system will slow down digestion to conserve energy.
D.
The enteric nervous system will slow down digestion to conserve energy.
Answer:
D. The enteric nervous system will slow down digestion to conserve energy.
Explanation:
The enteric nervous system is like the digestive system's very own brain. It controls the way the digestive system functions. In a fight or flight response, the enteric system slows down the digestive system, this is to make sure that the body has enough energy to course through our muscles and brain to prepare for a "fight" or "flight."
Answer:
The answer is D
Explanation:
If the number of sharks swimming in a coastal region increases, then the number of shark attacks on humans will also increase.
Independent variable: _______
Dependent variable: _______
The independent variable is the number of sharks in a coastal region, and the dependent variable is the number of shark attacks on humans. The inverted pyramid indicates an unusual predation level, and ecological interactions are complex, involving numerous influencing factors. Human population changes will likely impact marine ecosystems and coastal morphology.
When considering the statement "If the number of sharks swimming in a coastal region increases, then the number of shark attacks on humans will also increase," the independent variable is the number of sharks swimming in a coastal region, and the dependent variable is the number of shark attacks on humans.
Biology often involves studying relationships between different factors in an ecosystem. An increase in the number of sharks could be influenced by various factors such as population growth of seals, their primary prey, which is typically represented with years on the x-axis as the independent variable and the number of seals on the y-axis as the dependent variable.
In a study showcasing the relationship between different trophic levels like sharks, their prey, and phytoplankton, an inverted pyramid is used to illustrate a top-heavy biomass distribution where higher trophic levels have larger biomass than the lower levels, which is an unusual situation and could convey to readers that there is an unusually high amount of predation in this region, affecting population dynamics.
Examining ecological interactions between two species, such as predator and prey, highlights the complexity and potential variances in population sizes. For instance, while seal deaths may increase due to predation by sharks, an increase in births could balance the population size. Thus, direct correlations may not always be straightforward, and factors like time of year or external influences can affect the apparent relationships between variables.
which of the following phrases can be used to describe the genotype Ee
Answer:
Heterozygous dominant
Explanation:
This means that the genotype has both alleles of the gene hence referred to as heterozygous. The dominant of the two alleles is the one that is expressed in the phenotype of the individual expressing the genotype. The effects of the recessive allele are masked by the dominant allele.
Answer:
The correct answer is option C. heterozygous dominant.
Explanation:
The heterozygous condition takes place when an individual carries two distinct forms or alleles of a gene. Here in question, the genotype given is Ee which exhibits that E and e are two alleles of a gene.
The dominant allele is the form of a gene that masks the other gene if it is in a heterozygous condition. It is symbolized with the capital letter of a particular form. The masked gene is symbolized with a small letter.
The given genotype Ee is heterozygous dominant because it has one dominant allele that will mask the recessive and express itself.
Thus, the correct answer is option C. heterozygous dominant.
I NEED HELPPPPPPPPP !!!!!!
A chemical reaction takes place in which erlergy is released. Arrange the reaction's characteristics in order from start to finis
lower energy of reactants
higher energy of products
higher energy of reactants
transition state
SD
lower energy of products
Answer:
lower energy of reactants lower energy of products transition state higher energy of reactants higher energy of productsExplanation:
As you may already know, a chemical reaction refers to the "mixing" of some chemical compounds called reagents, which will have the atoms rearranged among themselves, transforming them into other chemical compounds. This rearrangement of atoms is done with energy expenditure that can be perceived by the reactions that happen with temperature changes, light release, among others.
In summary, a chemical reaction occurs when energy is released, at which time the energy levels between reagents and products follow the following order:
lower energy of reactants lower energy of products transition state higher energy of reactants higher energy of productsIn an exothermic reaction, c) reactants have higher energy at the start. After reaching the transition state by absorbing activation energy, energy is released, and products have lower energy than reactants.
Reactants in an exothermic reaction c) begin higher energy of reactants . Energy is released and products have less energy than reactants after absorbing activation energy to achieve the transition state. In a chemical reaction where energy is released, this is known as an exothermic reaction. Here are the energy characteristics in sequential order:
Higher energy of reactants: Reactants start with a higher energy level.Transition state: The reactants absorb activation energy to reach the transition state or activated complex.Lower energy of products: Energy is released when new bonds form in the products, and the products have lower energy than the reactants.These steps explain the energy changes as bonds are broken and new bonds form, resulting in a net release of energy.
5. A main function of a plant's seed is to
(1) store food to be used during early development
(2) attract pollen to be used during development
(3) take in light energy to be used during photosynthesis
(4) produce chlorophyll to be used during photosynthesis
Answer:
the main function of a plant's seed is reproduction to keep it in existence. So, that makes the answer (3) Take in light energy to be used during photosynthesis.
Explanation:
The primary function of a plant's seed is to store food for the embryo's early development. Seeds consist of an embryo, seed coat, and endosperm, with the latter providing the necessary nutrients.
A main function of a plant's seed is to store food to be used during early development. This stored energy and nutrients are critical for the growth of the embryo within the seed. Within flowering plants, these resources can be found in the form of the endosperm or sometimes within the cotyledons, depending on the type of plant.
Seeds have three main parts: the embryo, the seed coat, and the endosperm or cotyledon. The embryo is the young plant itself, the seed coat provides protection, and the endosperm or cotyledons serve as a food reserve. The seed effectively allows a new plant to have a head start in life, providing protection, nutrients, and a mechanism for dormancy, enabling germination when conditions are optimal for growth.
what must happen before meiosis can begin
Answer:
The correct answer is option C.
Explanation:
Before meiosis, DNA that is stacked into chromosomes must replicate. Before replication, the sex cell has two copies of each chromosome, one from mother, and one from father.
DNA replication takes place in the same manner as it does during mitosis. After the chromosome replication, the homologs are double in number, and each chromosome now has a homologous pair of chromosomes.
Thus, the correct answer is option C.
Before meiosis can begin, chromosomes must replicate.
Before meiosis can take place in a cell, such a cell must go through the interphase stage of the cell cycle.
During the interphase, the cell grows in size and volume (G1 phase) and chromosome replications occur (S phase). Thereafter, the cell synthesizes protein (G2) before being ready to undergo meiotic cell division.
More on the cell cycle can be found here: https://brainly.com/question/25282664
How does energy travel in an ecosystem? from consumers to producers from producers to consumers from tertiary consumers to primary consumers from secondary consumers to primary consumers
The energy travel in an ecosystem from producers to consumers. The correct option is B.
What is an ecosystem?An ecosystem is a place where all biotic factors and abiotic factors are present with each other, and they all interact with each other and help each other for energy, survival, and food.
Producers are the plants and algae which produce food and energy. They contain most of the energy. All animals depend on plants for their food and energy.
Consumers are of three types, primary, secondary, and tertiary. They consume energy either from plants or primary or secondary consumers. So energy travels from producers to consumers.
Thus, the correct option is B, from producers to consumers.
To learn more about the ecosystem, refer to the below link:
https://brainly.com/question/27614862
#SPJ2
How do scientists think protobionts formed?
A. Cell-like structures formed from molecular bubbles.
B. Prokaryotes absorbed other prokaryotes.
c. Archaea reproduced with bacteria.
D. Eukaryotes evolved due to natural selection.
Answer:
The correct answer is A.
Explanation:
The very primitive and early microorganisms on the earth's surface were protobionts.
Protobionts are cell-like microscopic structures, and they are made up of organic and inorganic molecules present in a lipid bilayer membrane. The layers of the lipid membranes were folded into bilayers and transformed into a bubble shape when placed in water.
These membranes were selectively permeable and also observed shrinkage and swelling in osmotic conditions. Protobionts also possess the characteristics of reproduction.
Answer:
The answer is
A. Cell-like structures formed from molecular bubbles.
Explanation:
I just did a-pex except the letter switched
Select the correct graph.
The blue curve on the graph represents the original population of a species of white rabbits. Which graph shows directional selection that occurs in a species?
Answer:
The middle graph
Explanation:
Distribution of traits across a population forms the natural selection. It can be depicted in a graph. There is three types of natural selections. These are directional selection, disruptive selection and stabilizing selection. Among the given graphs, the middle graph shows directional selection because shifting the mean of the population graph. In this type of selection, the selection works against the trait distribution.
Which cell lacks a nucleus
Prokaryotic cells
The genetic material or DNA is loose inside and is made of a single loop.~W
Hello There!
Prokaryotic cells lack a nucleus.
A prokaryotic cell is a cell without a nucleus or a membrane bound nucleus.
Please Anyone Help me!!!!
Why are nonnative species a threat to biodiversity?
They often use up resources that other organisms need.
They are not able to successfully breed in the wild.
They release pollution into many environments.
They easily contract and spread diseases to other organisms.
Answer: The correct answer is: [A]:
___________________________________________________
" They often use up resources that other organisms need. "
___________________________________________________
Hope this is helpful to you!
Wishing you the best!
___________________________________________________
Answer:
A. They often use up resources that other organisms need.
Explanation:
Nonnative species are a threat to biodiversity because they often use up resources that other organisms need.
how are these two elements different ? hydrogen and oxygen- which one has the greatest mass ?
Explanation:
Hydrogen and Oxygen have many properties in common, but they have a lot of differences as well. Both are gases, both are colorless, both are odorless. They both differ from each other in the following regard:
Hydrogen has one unpaired electron whereas oxygen has two unpaired electrons.
Hydrogen can form only one covalent bond whereas oxygen can form two covalent bonds.
The most common isotope in hydrogen has no neutron in its nucleus whereas there are 8 neutrons in most common isotope of oxygen.
Atomic mass of oxygen is far greater than that of hydrogen. Hydrogen has an atomic mass of 1.00794u where as oxygen has an atomic mass of 15.999u
The _______ is a process often used by scientists to help them solve problems.
Technology
The scientific method is an empirical method of acquiring knowledge that has ... The process of the scientific method involves making conjectures (hypotheses), deriving predictions ...
What kind of erosion causes soil and rocks to fall?
A. Wave
B. Wind
C. Chemical
D. Gravity
Answer:
It's probably going to be D. Gravity
Explanation:
Because the question says "fall" it is safe to assume that gravity is the answer.
Gravity erosion is the type of erosion that causes soil and rocks to fall. This can occur through landslides, rockslides, and other slope movements influenced by factors like steepness and soil or rock type.
Explanation:The kind of erosion that causes soil and rocks to fall is D. Gravity. Gravity erosion, also known as mass wasting or slope movement, occurs when the force of gravity is strong enough to make soil, rock or debris on a slope slide down. An example might be a landslide, where soil and rock on a steep mountainside become unstable and tumble downwards, or smaller rockslides along a highway cutting. This type of erosion is interconnected with factors such as slope steepness, type of soil or rock, and the amount of water in the soil, which can add weight and decrease friction.
Learn more about Gravity Erosion here:https://brainly.com/question/34617085
#SPJ2
which asteroid is the greatest distance from the sun and why?
Answer:
Asteroid Belt
Explanation:
It is the greatest distance from the Sun because it's between Mars and Jupiter.
Please mark brainliest and have a great day!
. Which of the following is not a benefit of the water cycle? (4 points) The water cycle moves water from place to place. The water cycle continually cleans the water on Earth. The water cycle stores water for use in a drought. The water cycle helps regulate the temperature on the Earth.
Answer:
the water cycle stores water for use in a drought
Explanation:
Answer:
The water cycle continually cleans the water on Earth.
Explanation:
Which type of biome is the least productive?
Answer:
The "TUNDRA" biome is the least productive biome there is.
Explanation:
The types of biomes like deserts and tundra are the least productive in nature.
What is Biome?A Biome may be defined as a very large area that is characterized by a particular type of vegetation specifically.
A Biome may also be defined as a very large area of the ecosystem that is running in nature in an unmanaged way.
Examples of biomes include tropical rainforests, coral reefs, grasslands, etc.
The deserts and the polar tundra are the biomes that are the least productive ones. This is because such ecosystems are highly exposed to heat energy and water respectively.
Therefore, it is well described above.
To learn more about Biome, refer to the link:
https://brainly.com/question/1930321
#SPJ2
A key difference between green algae and land-based plants is that
A. land-based plants don't have vascular tissue and must absorb nutrients directly from the environment.
B. green algae don't have chloroplasts and absorb their food rather that perform photosynthesis.
C. green algae don't have vascular tissue and must absorb nutrients directly from the environment.
D. land-based plants breath in carbon dioxide while green algae consume oxygen.
Answer:
The correct answer is option C.
Explanation:
Green algae lack the vascular tissues, that is they do not have phloem or xylem for transporting water and nutrients throughout their bodies. They have a thalloid that means they do not have a body divided into root stem and leaves. The thalloid body helps in absorbing nutrients from surroundings.
The land-based plants have xylem and phloem (vascular tissues) to transport water, nutrients, and minerals throughout the body.
Thus, the correct answer is option C.
TAG CTT GGC AT What kind of mutation is this?
Answer:
Point mutation
Explanation:
This kind of mutation is the change of one nucleotide in a sequence. The mutation causes a change in the translated amino acid at this position. If the change results in a codon that codes for the same amino acid, then there is no effect. However, a different amino acid may change the properties/characteristics of the translated protein causing some effect on the phenotype of the organism bearing the mutation.