The phenomenon in which the inheritance of variegated color on the leaves of certain plants was determined by the maternal parent only describes B) chloroplast inheritance.
Structures such as the chloroplast and mitochondria contain their own DNA.
Evolutionary studies predict that structures such as chloroplast and mitochondria were first smaller living organisms that were engulfed by larger organisms hence these cells have their own DNA.
The chloroplast DNA which is not present elsewhere in a plant is inherited by the daughter plant from the mother plant only i.e maternal inheritance. Hence, as the variegated color was inherited from the maternal parent, it depicts chloroplast inheritance.
Although a part of your question is missing, you might be referring to this question:
Correns described that the inheritance of variegated color on the leaves of certain plants was determined by the maternal parent only. What phenomenon does this describe?
A) mitochondrial inheritance
B) chloroplast inheritance
C) genomic imprinting
D) infectious inheritance
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what hormone helps control glucose levels by stimulating the use of noncarbohydrate sources to synthesize glucose and increasing the utilization of fatty acids as an energy source? multiple choice question.
In the liver, glucagon stimulates the breakdown of fatty acids while suppressing lipogenesis. Glucagon encourages the production of lipids and ketone bodies, which are non-carbohydrate energy sources.
What is glucagon?The pancreatic alpha cells that make glucagon are peptide hormones. It is thought to be the body's primary catabolic hormone since it increases the blood's concentration of glucose and fatty acids. It is also prescribed as medicine to treat a number of medical conditions?
What are alpha cells?The Islets of Langerhans in the pancreas are home to alpha cells, which are endocrine cells. To raise blood glucose levels, alpha cells emit the peptide hormone glucagon.
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The light reactions require the cooperation of two photosystems to power linear electron flow from water to nadp .
a. True
b. False
The light reactions require the cooperation of two photosystems to power linear electron flow from water to NADP. The statement is True.
ONLY PHOTOSYSTEM 2:
-water oxidation
-shortening of the electron transport chain between the two photosystems
ONLY PHOTOSYSTEM 1:
-NADP+ decrease
-oxidation of the electron transport chain connecting the two photosystems
BOTH THE PS2 AND THE PS1:
-absorption of light
-decrease in primary electron acceptor
[The primary job of each photosystem is to absorb light and convert the absorbed light's energy into redox energy, which drives electron transport.
- P680 is oxidized (which oxidizes water) in PS II (the first photosystem in the sequence), and the PS II primary electron acceptor is reduced (which in turn reduces the electron transport chain between the photosystems).
-The PS I primary electron acceptor is reduced (which in turn reduces other molecules, finally reducing NADP+ to NADPH), while P700 is oxidized (which oxidizes the electron transport chain between the photosystems)].
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How much can one single bacterium reproduce on a nutrient source at room temperature in 10 hours?:
[A] 15 Thousand bacteria
[B] 1 Million bacteria
[C] 30 Million bacteria
[D] 60 Million bacteria
I might need a direct answer because sometimes I don't get explanations lol.
One single bacterium can reproduce 15 Thousand bacteria on a nutrient source at room temperature in 10 hours.
So, option A is correct.
What is bacteria?Bacteria can be described as ubiquitous, mostly free-living organisms often consisting of one biological cell that constitute a large domain of prokaryotic microorganisms.
There are some major characteristics found in bacteria which include;
1) lack of membrane-bound organelles,
2) unicellular and
3) small (usually microscopic) size
Bacteria in the human body serves some functions as they help to degrade the food we eat, help make nutrients available to us and neutralize toxins.
In conclusion, Bacteria are microscopic single-celled organisms that can be helpful to organisms.
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If a neutral element has an atomic number of 18 and an atomic mass of 39.95, how many of each subatomic particle does it have? Explain how you came up with this response.
For the neutral element;
The number of protons is 18The number of electrons is 18.The neutron number is 20.What are the subatomic particles?Sub-atomic particles are the smaller particles that are found within an atom.
The sub-atomic particles RE:
protons - positively-chargedelectrons - negatively-chargedneutrons - neutralA neutral atom has an equal number of protons and electrons.
The neutron number is the mass number minus the atomic number.
The number of protons in an atom is given by the atomic number of that atom.
The number of protons and electrons in the neutral element is 18 each.
The proton number is 39.95 - 18 = 21.95 or 22.
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What’s one way I could go through the water cycle starting with water and vapor in the atmosphere.
In the water cycle, water present on the surface of the earth is heated by the sun and is converted to water vapor which then rises to the atmosphere. The water vapor then condenses to form clouds. The clouds precipitate the condensed water vapor in the form of rain, ice, or snow.
What is the water cycle?The water cycle describes the process by which water is cycled between the earth, the atmosphere, and the water bodies.
The water cycle consists of three processes which are given as follows:
Evaporation- this is the process by which water is converted to water vapor. The Sun heats the water and converts it to vapor which then rises up into the atmosphere.
Condensation - This is the process by which the water vapor present in the atmosphere is converted to liquid water and to solid ice.
Precipitation - refers to the processes by which the condensed water vapor is released to the ground as rain, ice, or snow.
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What is a hydrocarbon bond?
A hydrocarbon bond is a chemical bond that forms between hydrogen and carbon in several chemical products.
What is a hydrocarbon bond?In chemistry, a bond is formed when two elements combine with each other. In other words, a bond is formed between two elements that could be similar or different.
A hydrocarbon bond, therefore, is a chemical bond that forms between carbon and hydrogen atoms. This bond characterizes the majority of bonds in several organic molecules and is the only bond found in hydrocarbon compounds.
Hydrocarbon bonds could be single bonds, double bonds, or even triple bonds. The bonds are formed from the valence electrons of carbon and the valence electrons of hydrogen.
All hydrocarbon bonds except single bonds are said to be unsaturated. Examples are found in alkenes and alkynes. Saturated hydrocarbon bonds are found in alkanes.
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a scientist looks into a microscope and sees that replicated chromosome pairs are lined up in the center of a cell. the scientist then sees the mitotic spindle from each side of the cell attach to a chromosome. which mitotic phase is the scientist likely witnessing?(1 point) responses anaphase anaphase anaphase or telophase anaphase or telophase metaphase metaphase prophase or metaphase
Metaphase is the mitotic phase is the scientist likely witnessing.
What is a mitosis?In eukaryotic cells, the nuclear division procedure known as mitosis occurs when a parent cell divides to produce two identical daughter cells. Particularly, the division of the duplicated genetic material found in the nucleus during cell division is referred to as mitosis.
What are the 4 stages of mitosis?4 stages namely prophase, prometaphase, metaphase, anaphase, and telophase.
"Metaphase" is a cell division stage (mitosis or meiosis). Typically, individual chromosomes are spread out across the cell nucleus. During metaphase, the cell's nucleus disintegrates and the chromosomes condense and migrate toward one another, aligning in the middle of the dividing cell.
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Which category of organic molecules is correctly paired with one of its functions? A. carbohydrates – provides structural component of cell membrane B. lipids – transmits genetic information C. nucleic acids – provides cells with immediate energy D. proteins – speed up chemical reactions
The category of organic molecules that is correctly matched with one of its functions is (D) proteins – speed up chemical reactions.
Proteins are made up of amino acids and they serve a variety of cellular functions. These organic molecules also function as enzymes as well as hormones. Enzymes are proteins which act as biocatalysts and increase the rate of chemical reactions.
Carbohydrates are the macromolecules with the general formula (CH₂O)ₙ, where 'n' denotes the number of carbon atoms in the molecule. Their main function is to provide immediate energy to the body.
Lipids are non-polar organic molecules. They are hydrophobic in nature and are utilized for long-term energy storage by the cell. Nucleic acids are responsible for transmitting the genetic information from one generation to another.
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Animal cells can take up glucose against its concentration gradient using a na /glucose symporter.
a. true
b. false.
Animal cells can take up glucose against its concentration gradient using a na /glucose symporter. The given statement is false.
Diffusion of solutes through transport proteins in the plasma membrane is referred to as facilitated diffusion. Transport proteins that participate in assisted concentration diffusion include channel proteins, gated channel proteins, and carrier proteins.
In comparison to the extracellular environment, the cytoplasm contains a larger concentration of glucose. The extracellular environment has a higher Na+ content than the cytoplasm does. A Na+/sucrose symporter allows animal cells to absorb sucrose against its concentration gradient.
Therefore, animal cells can take up glucose against its concentration gradient using a na /glucose symporter. The given statement is false.
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the type of antibiotic resistance that is due to a change in the genome of a bacterium that converts it from a sensitive cell to a resistant cell is called
The type of antibiotic resistance that is due to a change in the genome of a bacterium that converts it from a sensitive cell to a resistant cell is called Biological Mutations.
What do genetic changes in humans mean?A genetic mutation is a change in a gene's DNA sequence that results in the production of a different organism. It alters the DNA sequence of that gene in a way that is irreversible. For humans to evolve—a process of development over many generations—genetic variety is crucial. One person experiences a sporadic genetic mutation.
Hemophilia, sickle cell disease, and cystic fibrosis are examples of hereditary mutations. During a person's lifetime, further mutations may occur on their own. The terms sporadic, spontaneous, or novel mutations are used to describe them. Only certain cells are impacted.
We are collections of adaptations, like all living things, and each one serves a specific purpose. However, the purpose of reproduction has always been the subordinate objective under selection.
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Could you connect more than two hydrogen atoms together? Explain, again in terms of the
structure of the atoms and their shared parts, why or why not.
Two electrons can fit into or "hold" the outermost energy level for hydrogen. Outer energy atoms will continue to covalently connect. Covalent bonds between atoms and those in the H2 molecule can't form.
What is an atom?A negatively charged core nucleus and one or more circling electrons make up an atom. There may be the positive charge, somewhat massive particles and neutrons that make it up the nucleus. Atoms are the basic building blocks of stuff.
How are atoms created?13.7 billion years after the Big Bang, atoms were first formed. It was possible for quarks and electrons to develop as the hot, dense new cosmos cooled. Protons and neutrons were created by the combination of quarks, which then resulted in the formation of nuclei.
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true+or+false:+two+proteins+that+share+30%+amino+acid+identity+are+30%+homologous.
The correct answer to two proteins that share 30% amino acid identity are 30% homologous is false.
Although homology can be inferred from excess similarity and excess similarity can be recognized from statistical estimates (E()-values), most researchers prefer to describe similarity in terms of "percent identity." Although it is a common rule of thumb that two sequences are homologous if they are more than 30% identical across their entire lengths (much higher identities are seen by chance in short alignments), the 30% criterion misses many easily detectable homologs. While 30% identical alignments over more than 100 residues are almost always statistically significant, many homologs with E()-values 1010 that are not 30% identical are readily found. As a result, E()-values and bit-scores (described below) are far more useful for inferring homology.
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Which technology has been commonly utilized by scientists to manipulate heritable information by creating DNA fragments with ends that can join with other DNA fragments?
Gel electrophoresis
Genetic cloning
Plasmid transformation
Restrictive enzyme analysis
Genetic cloning is the process by which scientists combine DNA fragments to alter information that is passed down through the generations. Thus, option B is correct.
What is the genetic cloning?In terms of genetics and genomics, cloning refers to the use of scientific techniques to create exact or nearly exact duplicates of an organism, cell, or DNA sequence.
“Molecular cloning” refers to the process of reproducing a particular DNA section of interest to advance study.
Therefore, Genetic cloning technology has been commonly utilized by scientists to manipulate heritable information.
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Which evidence suggests that early earth was subject to frequent impacts from asteroids and meteoroids?
O Iridium is common in asteroids and is widespread in older rock layers.
O Ancient rock layers are thinner than more recent layers due to bombardment.
O There are many records of mass extinctions in early rock layers.
O Iridium is rare in older rock layers and more common in younger ones.
Evidence suggests that the early earth was vulnerable to numerous collisions from the asteroids and meteoroids due to the ancient rock strata which are thinner than the more recent layers. Thus, the correct answer is B.
How the old rock layers come formed?
When the particles from air or water settle down, layered rocks are formed. This process took a long time. Steno's Law of Original Horizontality suggests that the most sediments were initially deposited horizontally on Earth after being generated from particles. However, the majority of stratified rocks are no longer horizontal.
Therefore, the correct option is B.
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functions of the smooth endoplasmic reticulum include ________.
Functions of the smooth endoplasmic reticulum include lipid synthesis, steroid synthesis, and drug detoxification.
Smooth endoplasmic reticulum
The cytoplasm of eukaryotic cells contains an organelle called the smooth endoplasmic reticulum (SER), which is composed of a network of tiny disk-shaped tubular membrane vesicles. The SER is involved in the synthesis and storage of lipids like cholesterol and phospholipids, which are needed to create new cellular membranes.
The synthesis of lipids, including as cholesterol and phospholipids, which are needed to create new cellular membranes, is carried out by the smooth ER. Smooth ER is crucial for the production of steroid hormones from cholesterol in certain cell types.
The synthesis of lipids, steroids, and carbohydrates, as well as the metabolism of foreign compounds like medications or poisons, are its primary functions.
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unlike plants, animals cannot make there own food so they must find and consume other organisms to survive how do animals use the food they obtain chose he three that apply:A,energy for body warmth,B, growth and body repair,C, ability to adapt ,D,develop instincts,E,energy for motion.
Plants provide sustenance for animals, either directly through consumption of plants or indirectly through consumption of animals that consume plants. Thus option A, B, C, E is correct.
What is the use of food in animals?Similar to people, livestock animals require a balanced diet that includes all the vitamins, minerals, fluids, and nutrients they require.
Some creatures devour both vegetation and other creatures. Animal nutrition covers nutrient needs, food intake methods, and how food is used by the body.
Therefore, animals use the food they obtain from another animals.
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Which statements describe functions of DNA? Select three options.
DNA gives instructions on how to make keratin, the protein that makes up human hair and skin.
DNA contains information about eye and fur color that is passed on from parents to kittens.
DNA provides energy for cheetahs to run fast.
DNA helps create substances that fight the bacteria that enter the body.
DNA stores energy for a bear as it hibernates during the winter.
The correct answer about the description of what the DNA does are as follows:
DNA gives instructions on how to make keratin, the protein that makes up human hair and skin.DNA contains information about eye and fur color that is passed on from parents to kittens.DNA helps create substances that fight the bacteria that enter the body.The correct answer choice are options a, b and d.
How DNA gives instructions for protein synthesisIt follows that DNA known by deoxyribonucleic acid is one of the nucleic acid found in the nucleus of living organisms. The DNA has 1001 functions; among which include the giving instructions on the production of proteins in the body.
The DNA gives codes on how to make proteins in the process of transcription. During this process, it works on the the principle of using deoxyribonucleic acid as a template to produce the messanger ribonucleic acid also in the nucleus. This whole process result in the synthesis of proteins.
So therefore, we can accurately confirm that one the major functions of DNA is that it helps in the manufacture if proteins.
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How do humans inetervene in the water cycle?
The water cycle explains how water vapor from the earth's surface rises into the atmosphere, cools and condenses to form rain or snow in clouds, and then falls back to the earth's surface as precipitation.
What is water cycle?Water that rains on land gathers in lakes, rivers, soil, and porous rock strata. A large portion of this water then flows back into the oceans, where it will again evaporate. An important factor in Earth's weather patterns is the movement of water in and out of the atmosphere.
The water cycle on Earth is made up of precipitation, which connects the ocean, land, and atmosphere. Scientists can better understand the effects of precipitation on streams, rivers, surface runoff, and groundwater by knowing where it rains, how much it rains, and the characteristics of the falling rain, snow, or hail.
Therefore, The water cycle explains how water vapor from the earth's surface rises into the atmosphere, cools and condenses to form rain or snow in clouds, and then falls back to the earth's surface as precipitation.
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If you performed the fermentation experiment with starch and the result was a low rate of fermentation, what could you do to increase the reaction rate?.
If you performed the fermentation experiment with starch and the result was a low rate of fermentation. An increase in enzyme or substrate concentration will interfere with the reaction. It Increases the amount of reaction.
What is fermentation reaction?
Through the activity of enzymes, fermentation is a metabolic process that results in chemical changes in organic substrates. It is specifically described in biochemistry as the process of obtaining energy from carbohydrates without the presence of oxygen.
Therefore, An increase in enzyme or substrate concentration will interfere with the reaction. It Increases the amount of reaction.
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A program for a computer is a “ collection of code “
A . True
B . False
Answer:
True
Explanation:
Computers work because of the codes that programmers use to make computers. For example, all websites have codes that were programmed when making a website (or even a game). If you are curious about website and game codings, right-click your mouse and click "inspect" down at the bottom of the pop-up. A ton of codes should pop up on your screen, you can play around with them and change some stuff (which all of your changes go away when refreshing). For more information, visit code.org to program some simple games like Flappy Bird. Hope that helps! :) Brainliest welcome!! :)))
20. A student created the model below to explain the process of cell differentiation.How are stem cells able to be pluripotent as shown in her model?Different parts of the DNA are activated for each type of cell.Different parts of cells differentiate during mitosis.Different types of DNA are transferred to different types of cells.Different types of cells contain different chromosomes.
Remember that a gene is a sequence of genetic material within DNA and different genes are active in different kinds of cells. This process is known as gene regulation and is an important part of normal development. This is the reason why most living organisms are composed of different kinds of cells specialized to perform different functions.
According to this information, we can conclude that the correct answer is:
Answer:Different parts of the DNA are activated for each type of cell.
Single-celled organisms are able to maintain internal stability because they
Single-celled organisms use their cell membrane and other organelles to maintain homeostasis. Even single-celled organisms must keep their internal conditions in balance in order to preserve homeostasis.
Describe a cell?A cell is a cytoplasmic mass that is externally bound by a cell membrane. Cells, which are typically microscopic in size, are the smallest structural units of living matter and comprise all living things. Most cells have one or more nuclei as well as other organelles that perform a variety of functions. The basic membrane-bound entity that houses the essential molecules of life and serves as the foundation for all living things. A single cell, like bacteria or yeast, is frequently an entire organism in and of itself. Cells are the fundamental building blocks of all life. Trillions of cells make up the human body.To learn more about cell, refer
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The table below shows digestive enzymes and the reactions that they catalyse. What word goes in blank A?
Answer:
protein
Explanation:
protein is end product is Amino acid
The word that goes with the blank labeled as A is protein, as protease helps in protein digestion.
What are digestive enzymes?Digestive enzymes are proteins that the body produces to help break down food and aid digestion.
Digestion is the process by which your body uses the nutrients found in food to provide energy, help it grow, and perform vital functions.
Digestive enzymes are essential for splitting down the food you eat. These proteins hasten chemical reactions that convert nutrients into substances that can be absorbed by your digestive tract.
Digestive enzymes are present in your saliva. They are also released by some of your organs, including the pancreas, gallbladder, and liver.
Proteolytic enzymes (proteases) are protein-degrading enzymes, that convert proteins into amino acids. Animals, plants, fungi, and bacteria all produce enzymes.
Thus, the correct option is A.
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what does passive vasodilation arise from? group of answer choices withdrawal of sympathetic influence on blood vessels edhf release from the endothelium local increase in blood pressure local k accumulation in tissue
The typical endothelium secretes prostacyclin (PGI2), endothelial-derived hyperpolarizing factor (EDHF), and nitric oxide (NO) in response to increased flow, which causes vascular smooth muscle cells to relax and cause vasodilation.
Which blood arteries are affected by endothelial cell contraction?A study of the embryo also indicates that endothelial cells alone form the basal lamina of the smallest blood vessels, from which arteries and veins emerge. Pericytes, connective tissue, and smooth muscle are added later, as needed, in response to signals from the endothelial cells.
A fall in blood pressure is brought on by the vasodilation, which increases blood flow and decreases systemic vascular resistance (SVR).
The endothelium is an essential metabolizing and endocrine organ that plays a significant role in the regulation of immunology, inflammation, and angiogenesis, as well as the control of blood fluidity, platelet aggregation, and vascular tone.
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Once an organism has been classified, it can be reclassified based on new information about the organism.
True
False
True. Once an organism has been classified, it can be reclassified based on new information about the organism.
What is taxonomic revision?Taxonomic revision is the process of reevaluating and potentially changing the classification of an organism based on new information or a re-evaluation of existing information. This process involves the examination of an organism's characteristics, such as its physical features, genetics, and evolutionary history, to determine its proper placement within the classification system.
Taxonomic revisions can result in an organism being reclassified into a different group, genus, or even family, depending on the new information that is discovered. Taxonomic revisions are important as they help to ensure that the classification system is accurate and up-to-date, and they also help to improve our understanding of the organism and its relationship to other organisms.
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When osteoblast activity is greater than osteoclast activity, what affect does that have on the amount of bone tissue and on blood calcium levels.
When osteoblast activity is greater than osteoclast activity, bone resorption increases as well as skeletal development and remodeling by depositing and mineralizing new bone increases.
The bone tissue increases by increasing calcium levels.
Bone is the supporting frame of the body. There are two types of bone cells namely osteoblasts and osteoclasts, which plays an important role in forming new bone. The osteoblast forms a new bone. The osteoclast dissolves old bone.
Osteoblasts play a critical part in skeletal advancement and remodeling by keeping and mineralizing modern bone and controlling osteoclastogenesis and bone resorption.
Collecting proof bolsters that cancer cells control osteoblasts to encourage bone colonization and tumor survival and proliferation.
Oppositely, High levels of PTH can enact osteoclasts and cause an over-the-top bone breakdown. Calcium in your blood triggers the discharge of PTH. Moo calcium levels within the blood, or hypocalcemia, can cause high levels of PTH.
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the presence of extensive sickle sheen on microblades found at natufian sites is evidence of:group of answer choices
The presence of extensive sickle sheen on microblades found at natufian sites is evidence of the harvesting of cereal grains.
What were Natufians known for?The Natufians were primarily hunters who supplemented their diet by collecting wild grain; they probably did not plant it. To harvest grain, they had flint-bladed sickles with straight bone handles, and to process it, they utilized stone mortars and pestles. Some tribes inhabited caverns, while others settled in developing villages.
Did the Natufians invent agriculture?The Yale archeologists believe that the Natufians were likely the forerunners of agriculture in the Near East since they lived shortly before the period in which domesticated plants first appear in the archaeological record.
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Which of the following statements are typical for cancer cells?
a. They undergo apoptosis.
b. They tend to be unspecialized.
c. They are formed by a well controlled cell cycle.
d. They have no defective genetics.
A zygote is best described as a(n)
A. fertilized egg with fused nuclei
B. unfertilized egg
C. sperm attached to an egg's cell membrane O
D. fetus 6 weeks after fertilization
Option 1.A. fertilized egg with fused nuclei.
A zygote is a eukaryotic mobile fashioned via a fertilization event between gametes. The zygote's genome is an aggregate of the DNA in every gamete and contains all the genetic information of a new man or woman organism. In multicellular organisms, the zygote is the earliest developmental degree.
First, the zygote will become a solid ball of cells. Then it will become a whole ball of cells called a blastocyst. inside the uterus, the blastocyst implants in the wall of the uterus, in which it develops into an embryo attached to a placenta and surrounded by fluid-crammed membranes.
The zygote represents the primary stage in the improvement of a genetically unique organism. The zygote is endowed with genes from two dads and a mom, and as a consequence, it's miles diploid wearing two units of chromosomes.
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How might energy and matter leave the ecosystem shown in the picture above?
Dead producers and consumers, and their waste, provide matter and energy to decomposers.
Decomposers turn substances back into inorganic forms that can be recycled within ecosystems. The energy that enters the ecosystem as sunlight eventually leaves the ecosystem in the form of heat. Energy is transferred between organisms in the food web, from producer to consumer.
Energy is used by living things to perform complex tasks. Most of the energy present in the food web comes from the sun and is converted into chemical energy through the process of photosynthesis in plants. The main difference between energy flow and the material cycle is that energy flow refers to the transfer of energy from one trophic level of the food chain to the next, while the material cycle refers to the movement of energy between living and non-living parts of an ecosystem. to indicate the flow or circulation of elements.
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