Explain why the last image would be an Apocalypse
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Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell:Select all that apply become more densely packed with nucleosomes accumulate both point mutations and deletions accumulate point mutations undergo irreversible repression accumulate deletions.
Answer:
undergo irreversible repression
Explanation:
Cellular differentiation refers to the process by which one cell and/or cell population divides and differentiates into more specialized cells. During cell fate differentiation, epigenetic marks modify chromatin structure in order to hamper the accessibility of the transcriptional machinery and transcriptional factors to different genes, which are irreversibly repressed. These epigenetic marks include DNA methylation and histone modifications (e.g., histone acetylation, histone methylation, etc). For example, it has been shown that DNA methylation and histone H3 lysine 27 tri‐methylation (H3K27me3) are epigenetic repressive marks on genomic regions that play a major role in gene expression programs during cell fate differentiation.
How does this behavior affect the survival of the eagle population?
Someone please help:)
Answer:
A. Provides a safe place for offspring to grow
Explanation:
Answer:
A
Explanation:
I took the test recently
During an experiment in Science class, Jorge notices that the liquid in the
thermometer moved up when he added calcium chloride (CaCl2) to a baking soda
solution. What type of energy transformation is demonstrated in the experiment?
Chemical to kinetic
Chemical to thermal
Thermal to chemical
Thermal to kinetic
Answer:
Chemical to thermal.
Explanation:
Chemical energy (the baking soda reacting to the calcium chloride) to thermal energy (the reaction causing the temperature to rise.
Mushrooms, bread molds, and yeasts are classified in the fungi kingdom Specific characteristics are used to classify these organisms. Why are these organisms in the fungi kingdom and not in the animal kingdom?
O They are parasites that feed off a host organism.
O They contain only one cell.
O They absorb nutrients directly from the environment.
They are prokaryotes
Answer:
C
Explanation:
They absorb nutrients directly from the environment.
What are Prokaryotes?A prokaryote is a single-celled creature without a nucleus and other membrane-bound organelles he Greek words pro and v (pro, meaning "before") are combined to form the word prokaryote.
Prokaryotes were categorized under the empire Prokaryota in the two-empire system developed by Édouard Chatton. However, prokaryotes are split into two domains in the three-domain concept, based on molecular analysis:
Bacteria (formerly Eubacteria) and Archaea (previously Archaebacteria). The third domain, Eukaryota, is designated for organisms containing nuclei. Prokaryotes are thought to have evolved before eukaryotes in terms of biology.
Therefore, They absorb nutrients directly from the environment.
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What is the name of the type of reaction that occurs when two substances join to form a single product?
Answer:
Synthesis reaction
Explanation:
hope this helps
Answer:
synthesis reactionExplanation:
A synthesis reaction occurs when two or more reactants combine to form a single product.
Name three large molecules that make up the bulk of the food humans eat, and identify the products of each one that result from digestion.
The body breaks down nutrients from food and drink into carbohydrates, protein, fats, and vitamins.
CARBOHYDRATES. Carbohydrates are the sugars, starches, and fiber found in many foods.
PROTEIN.
FATS.
VITAMINS.
Explanation:
I hope this is what your looking for. If not, let me know!
(this answer is from www.msdmanuals.com, turn this information into your own words. I am giving credit. :)
The three large molecules that make up the bulk of the food humans eat are:
CarbohydrateProteinFatsthe products of each one that result from digestion are;
Carbohydrate : Fructose, glucoseProtein : Amino acidFats:monoglycerides and fatty acids.large molecules are the giant molecules that is been found in our daily diet and this includes Carbohydrate, Protein, Fats.
However after digestion of these large molecules after enzymes have reacted on it they will give the products which was listed above.
Learn more about large molecules
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50 POINTS
How can the environment impact a particular population of a species?
Answer:
Certain species need different environments to live in and if its too cold for one species it can lead to death of the population of that species.
that is what I put
Explanation:
If a mosquito has 6 chromosomes in each body cell how many chromosomes will each new body cell have after mitosis?
Answer:
After mitosis, the daughter cells will have the same number of chromosomes as the parent cell, so 6 chromosomes
Help!!! Could someone please help me on this question?!
Answer:
the right answer is A!.....
Answer:
A. Baby squirels that inherit the trait are most likely to survive and pass the trait to their offspring
Explanation:
This is an example of natural selection, which is survival of the fittest. If the best trait is sharp teeth, they are more likely to survive and pass the trait on to others.
halimiocistus plant reproduce sexually or asexually? Is their organism identical or similar?
Answer:
They produce both sexually and asexually. Also the organism is similar
Explanation:
I learned this last year
what kind of flower is this?
Answer: could be Trifolium repens Aka the white clover
Explanation:
What is the major cause of changes in gene expression?
Is enzyme substrate complex concentration the product of enzyme concentration and substrate concentration?
Answer:
Yes
Explanation:
The enzyme substrate complex may be defined as the enzyme when interacting with the substrate at an active site and it produces a new product in the process. It is temporary molecule formed when the substrate comes in contact with the enzyme.
An enzyme is the molecule of a protein which acts like an organic catalyst and a substrate is a the molecule which interacts with the specific enzyme to form a product.
Therefore, the enzyme substrate complex concentration is the product of the substrate concentration as well as the enzyme concentration.
Which organelle is considered the control center of the cell or the "brain" of the cell? It contains all the DNA or the instructions to carry out the function of the cell??
Answer:
The nucleus
Explanation:
The nucleus of eukaryotic cells is the "control center". It contains DNA which tells the cell how to function.
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compare and contrast the three types of symbiotic relationships.
Answer:
Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
why do hot springs in Yellowstone national park at wooden walkway built around them
What would happen within a few months if all decomposers on Earth disappeared overnight?
There would be an overabundance of organic waste.
Plants would grow out of control.
Animals would grow out of control.
There would be no visible impact.
Answer:
There would be an overabundance of organic waste.
Explanation:
I took the same test :)
5. Which is the complimentary DNA strand of the DNA strand:
ATGCATGCAATG * (T
(8 Points)
ATGCATGCAATG
TACGTACGTTAC
UACGUACGUUAC
TAGCATGCTTAC
None of the above
Answer:
TACGTACGTTAC (so the second one)
functions of ribosomes and lysosomes
Answer:
Ribosomes are responsible for making proteins
Lysosomes are responsible for removing wastes, as well as destroying a cell after it dies
Answer:
functions of ribosomes and lysosomes :-
ribosomes -
- they are many in number.
-they are not membrane bound.
-they are responsible for protein synthesis. the more the amount of protein synthesised, more the number of ribosomes.
- they are either attached to endoplasmic reticulum or they will be freely present inside the cytoplasm.
lysosomes -
- they contain digestive enzymes that break down waste materials, foreign material and cellular debris. they are capable of digesting fats,proteins, etc. along with them lysosomes also digest or damage their own cells by their own enzymes, which lead to death of the cells. this process is called as autolysis. hence, tysosomes are also called suicidal bags.
PLSS HELP!!
What type of succession starts with some soil but then goes through the 10p
steps of succession?
A. Primary Succession
B. Secondary Succession
C. Climax Community
Explanation:
Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction.[1]
Succession after disturbance: a boreal forest one year (left) and two years (right) after a wildfire.
The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax community. The "engine" of succession, the cause of ecosystem change, is the impact of established organisms upon their own environments. A consequence of living is the sometimes subtle and sometimes overt alteration of one's own environment.[2]
It is a phenomenon or process by which an ecological community undergoes more or less orderly and predictable changes following a disturbance or the initial colonization of a new habitat. Succession may be initiated either by formation of new, unoccupied habitat, such as from a lava flow or a severe landslide, or by some form of disturbance of a community, such as from a fire, severe windthrow, or logging. Succession that begins in new habitats, uninfluenced by pre-existing communities is called primary succession, whereas succession that follows disruption of a pre-existing community is called secondary succession.
Succession was among the first theories advanced in ecology. Ecological succession was first documented in the Indiana Dunes of Northwest Indiana and remains at the core of much ecological science.[3]
About 3% of Earth’s water is fresh water. About 1% of this amount is usable fresh water.
Which statement describes the distribution of usable fresh water on Earth?
Most of the usable fresh water is in lakes.
Most of the usable fresh water is in rivers.
Most of the usable fresh water is in the wetlands.
Most of the usable fresh water is in the atmosphere.
Answer:
most of the usual fresh water is in lakes
Explanation: just did the assignment
Do mutations in body cells contribute to genetic variation?(1 point)
A) No, the causes of body cell mutations are outside the body and cannot alter DNA.
B) Yes, the mutations can be passed on to offspring and contribute to variation in the population.
C) Yes, these body cell mutations lead to mutations in the gametes.
D) No, the mutations cannot be passed to offspring and only affect the individual.
A mutation is the alteration of the genetic sequence of an organism, which can either be inherited or cannot be inherited. The mutation when transmitted to the offspring leads to genetic variation.
The correct answer is:
Option B. Yes, the mutations can be passed on to offspring and contribute to variation in the population.
Mutation is the change in the genetic sequence of the organism, which can be caused due to environmental factors and can be inherited.
The mutations can lead to genetic disorders, chromosomal disorders, or any other conditions. The mutations like a disease or adaptation that can be passed onto the offspring can result in genetic variation.
The mutation leads to genetic diversity, as the mutation is also the first step towards evolution. The organisms better suited to the environment will survive more and adapt more. These changes in the organisms will be inherited by the offspring leading to genetic variation.
Therefore Option B is correct.
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HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
The main disadvantage of using solar energy to generate electricity is that solar panels
A. Produce greenhouse gases
B. Produce water pollution
C. Are expensive to operate
D. Are expensive to purchase
Answer:
D - cost of purchasing
Explanation:
Solar panels use the sun to operate which has no cost so the answer is not C
The sun does not create green house gases and has nothing to do with pollution so the answers can't be a or b leaving us with answer choice D
Answer the question help me please I'll mark as brainiest
Answer:
The human male and female reproductive cycles are controlled by the interaction of hormones from the hypothalamus and anterior pituitary with hormones from reproductive tissues and organs. In both sexes, the hypothalamus monitors and causes the release of hormones from the pituitary gland.
Select the activities in which crop estimates play a critical role.
develop sampling pattern
plan harvest and storage requirements
estimate necessary soil inputs
obtain delivery estimates
budget for cash flow
obtain organic certification
obtain crop insurance
organize recommended timing
How is natural selection similar to selective breeding? How is natural selection different from selective breeding?
Answer:
Natural selection and selective breeding can both cause changes in animals and plants.the difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. for this reason selective breeding is sometimes called artificial selection.
Explanation:
Hope this helped Mark BRAINLEST!!!
Which of the following correctly describes the cell cycle?
A: Event in the normal life cycle of a cell
B:Events in the normal life cycle of a human
C:Event that change DNA
Answer:
A: Event in the normal life cycle of a cell
What is the best reason that producers are the most numerous group in an ecosystem?
A. Producers produce food energy for themselves and all the other levels
B. There is more room for small organisms than there is for large ones.
C. As energy flows through the ecosystem some anergy is added at each step.
D. Soil and temperature conditions is an ecosystem always favor producers.
Answer:
A is the answer taking the test right now
hope you have a great day
Think about the meaning of these words fruit seed germinate cotyledons, embryo ,plumule ,dormancy,root hairs. Write a sentence containing each of these words
Answer:
When a seed, taken from a fruit, is planted and watered under the correct temperature, it breaks dormancy, and the embryo germinates; first, the root grows covered by root hairs, then the cotyledons appear, and finally, the plumule elongates to reach the light.
Explanation:
Fruit: It forms by the mature ovary of the flowers. This structure contains and protects the seeds in its interior. Its principal function is to transport seeds to a distant area away from the parental plant and let the new plant emerge under the correct environmental conditions. The fruit develops different strategies to accomplish its function. Seed: Refers to the fecundated and mature ovule. This structure is the typical dissemination and dispersion unit of spermatophyte plants. Seeds are formed of three tissues. An embryo. A seminal tegument that covers and encloses the latent embryo. And the endosperm -a nutritious tissue-. Seeds develop and grow under the protection of the fruit body. Embryo: It is formed after fecundation. It composes of growing cotyledons, an epicotyl, and a hypocotyl. The tegument and endosperm of the seed protect the embryo from dehydration and denutrition. Once the seed is in the correct place, the embryo grows and emerges. Cotyledon: The two first leaves of the embryo. They have reserve nutritive tissues to help the embryo grow. It also performs photosynthesis. The embryo usually develops one or two cotyledons and one radicule or root hair. Plumule: First shoot of the young emerging plant. When the embryo is growing, it elongates to reach more sunlight. Root hairs: Extention of the roots´ cells that look like hairs and whose principal function is to absorb nutrients and water from the ground. They can be found in the maturation area of the root. Germination: Process of development and the emergence of the embryo. These are a series of steps that must occur in the seed from the moment the embryo begins to develop until a newly emerged plantule is formed. For germination to occur, there must be the appropriate environmental conditions. Dormancy: Period in which an alive seed can not germinate because there is a condition inside the seed that does not allow germination to occur yet. The seed is in dormancy, but it keeps viability.