Answer:
A Elements
Explanation:
Elements are pure substances that cannot be broken down into simpler substances by ordinary chemical means.
how does carbon move through the system when there is light
Answer:
Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them.
Explanation:
The sun takes an integral role in the photosynthesis stage of the Carbon Cycle. Photosynthesis refers to the process by which plants take in carbon dioxide and water (the products of respiration), and convert it to oxygen, powered by the energy of the sun.
If a cell that is about to divide has 22 chromosomes how many chromatids does it have? How many centromeres does it have?
44 chromatids 2 centromeres, If a cell that is about to divide has 22 chromosomes.
What are chromosomes?In the synthesis phase, the number of chromatids doubles while the number of chromosomes remains constant. Although the number of chromatids is unaffected, anaphase doubles the number of chromosomes.
Depending on whether or not the DNA has replicated and when the sister chromatids split, the chromosome changes during the cell cycle.
Meiosis I and Meiosis II are the two division cycles that occur during a meiotic cell division. Since the genetic material duplicates during the S phase of meiosis I, there will be 2n chromosomes during metaphase I.
Therefore, if a cell that is about to divide has 22 chromosomes it have 44 chromatids and 2 centromeres.
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the reproductive organ that produces gametes is called a
how the development of the microscope played an important part in helping to convince people that mendel was right
The microscope can be used to demonstrate the segregation of chromosomes during cell division. The law of segregation of characters is a Mendel's Law.
Each allele or gene variant is located at a specific chromosome location known as a gene locus.
The Law of Segregation indicates how one offspring receives one allele from each parent for each locus in a diploid organism.
The development of microscopy confirmed the idea that offspring receives one allele (which is located at a specific chromosome) from each parent for each gene locus.
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All cells come from pre existing cells. How do we know this?
Answer:
We know that all cells come from pre-existing cells because of cell division.
if something starts to get smaller which law of motion is it
Answer: second law
Explanation: second law is about force = mass acceleration
which hormone causes follicles to release their eggs for fertilization
Answer:
Luteinizing hormone (LH), the other reproductive pituitary hormone, aids in egg maturation and provides the hormonal trigger to cause ovulation and the release of eggs from the ovary.
Answer:
Luteinizing hormone
Explanation:
Luteinizing hormone (LH), the other reproductive pituitary hormone, aids in egg maturation and provides the hormonal trigger to cause ovulation and the release of eggs from the ovary
if a plant is not green (does not contain chlorophyll) can it do photosynthesis? why or why not?
Answer:
No, it cannot carry out photosynthesis because the plant will not be able to absorb light as it does not have chlorophyll.
Explaination:
Chlorophyll in plants is used for absorbing energy from light. And, in photosynthesis, light/sunlight is one of the main factors needed, so as the plant cannot absorb light, photosynthesis can't take place.
Which statement describes an important role of carbon dioxide in Earth's atmosphere?
Animals breathe carbon dioxide.
O Plants use carbon dioxide to make food.
O Carbon dioxido helps animals make proteins.
Carbon dioxide forms clouds that produce rain
Answer:Plants use carbon dioxide to make food
Explanation: Carbon-dioxide plays a very important role in sustaining life on Earth.
Plants use carbon-dioxide and water for photosynthesis in presence of sunlight and chlorophyll to produce food and oxygen.
CO₂ + H₂O → O₂ + glucose (food)
This food is consumed by the animals and oxygen is used for respiration. Animals use energy from the food to do work and exhale back carbon-dioxide.
David created a shoe box model of a grassland. He placed biotic factors in first but needs to add some abiotic factors. Which two abiotic factors could he add? A. Trees, B. Sunlight, C. Insects, D. Flowers, E. Humans, F. Water.
He placed biotic factors in first but needs to add some abiotic factors, two abiotic factors could he add Sunlight and Water.
What are abiotic factors in an ecosystem?An ecosystem is a place where biotic factors (that have a life) and abiotic factors (that have no life) converge, for the balance of the ecosystem both are necessary.
For example, in an ecosystem, animals and plants are the biotic factors, and among them, there are relationships such as animals that feed on other animals or others that feed on plants. But this life would not be possible if there were no factors such as water, sun, soil, oxygen, among others. So, the correct answer is C.
Thus, option "B and F" is correct.
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how long does better than bouillon last after opening
Since the ingredients include ground meat and vegetables, Better than Bouillon must be stored in the refrigerator. But don't worry that it will go bad quickly — it has about an 18-month shelf life from the time it's opened.
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Functional groups
Answer: I don't have a definitive answer for this question but I do have a helpful explanation.
Explanation: Try to find out what each letter means and organize the elements by how they connect to each other. If you don't know you can research to find a diagram that can help show you how to connect these functional elements. You could try searching how do you find the elements of HOH in a diagram.
what kind of punch do a jelly fish like
Answer:
a smack
Explanation:
Answer:
Jelly fish like a smack punch.
Explanation:
The mystery of what kind of punch a jellyfish like matched in beautifully with the show's theme - and explained why they're dubbed Scorpion. Scorpions are strongly loyal to the other members of their cyclone group. As they solve their cases, the squad surely creates a ruckus! Scorpions, like other scorpions, have very hard shells and are disliked by many people. A smack is a bunch of jellyfish, and the answer to the riddle is a clever play on the term punch. And, of course, this is what the marines called the team at the start of the show when they intended to make fun of them.
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Which is a negative effect of rising ocean temperatures? the drying out of fertile land and the formation of dust bowls the flooding of low-lying coastal areas the faster evaporation of water in the soil the decreased frequency of major storms
Answer:
B- the flooding of low-lying coastal areas
Explanation:
just did the test on edge
The negative effect of rising ocean temperatures is the flooding of low-lying coastal areas. Details about ocean temperatures can be found below.
What causes rise in ocean temperature?Rise in temperature of the ocean occurs when the ocean absorbs most of the excess heat from greenhouse gas emissions.
Increasing ocean temperatures affect marine species and ecosystems. Some of the negative effects of increase in temperature is as follows:
It causes cause coral bleaching It causes flooding of low-lying coastal areas.Therefore, the negative effect of rising ocean temperatures is the flooding of low-lying coastal areas.
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do aquatic animals living underwater can hear the sound produced outside the surface if water
Answer:
Believe it or not mammals like seals and pinnipeds otters and polar bears can but underwater animals hear very poorly
Explanation:
Help me out plz I’ll mark
Answer:
C
Explanation:
Answer:
Explanation:
I think its B
1. in a biogeochemical cycle, a chemical element spends time in different places, called .
Which statement best explains how the animals in the diagram contribute to the carbon cycle?
A
They eat plants and other organisms that contain carbon which prevents it from
ever being Stored.
B
They eat plants and other organisms which contain carbon and deposit carbon
into the soil when they die.
С
They remove carbon from the atmosphere during respiration and replace it with
oxygen that is used in photosynthesis.
D
They remove carbon from the soil during respiration and exchange it with
oxygen that evaporates into the atmosphere.
Answer:
B
Explanation:
B
They eat plants and other organisms which contain carbon and deposit carbon
into the soil when they die.
The correct option is B. They eat plants and other organisms which contain carbon and deposit carbon into the soil when they die.
What is carbon cycle?Carbon is the foundation of all life on Earth, required to form complex molecules like proteins and DNA. This element is also found in our atmosphere in the form of carbon dioxide (CO2).
Carbon helps to regulate the Earth’s temperature, makes all life possible, is a key ingredient in the food that sustains us, and provides a major source of the energy to fuel our global economy.
Therefore, The correct option is B. They eat plants and other organisms which contain carbon and deposit carbon into the soil when they die.
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what is an accessory organ of the plant used in sexual reproduction
The purpose of degrading cyclins is to stop the cell cycle from happening.
A. true
B. false
HELP!! what is the main reason that we continue to use fossil fuels for our electricty and transportation?
A)There are not enough dams in the US
B) Wind is to complicated to set up
C) Solar energy is limited
D) It is cheaper to use to fossil fuels then to invest in renewable energy technology
Answer:
D - It is cheaper to use fossil fuels than to invest in renewable energy technology.
Hope that helped. x
What are some human activities that change the environment?
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water
Other answers:
Overpopulation.
Pollution.
Global Warming.
Climate Change.
Genetic Modification.
Ocean Acidification.
Water Pollution.
Deforestation.
During primary succession, an ecosystem cannot 're-build' with large trees and bushes. Explain.
How would this impact the organism?
Answer:
how would what impact the organism?
Which statement describes functions of anti bodies
Answer:
Explanation:
Antibodies have three main functions: 1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization). 2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).
What describes a scientific theory
Answer:
A theory is a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, and which brings together many facts and hypotheses. ... A scientist makes an observation of a natural phenomenon.Explanation:
the origins of the atlantic slave trade were associated with the
Construct a Venn diagram that compares and contrasts sexual and asexual reproduction.
Include the following phrases:
haploid (n)
diploid (2n)
gamete
somatic
mitosis
meiosis
cell division
chromosomes separate
genetically identical
genetically different
The Venn diagram makes a comparison between categories. Intersection: Cell division/Asexual: diploid, somatic, mitosis, genetically identica/Sexual: haploid, gamete, meiosis, chromosomes separate , genetically different.
------------
A Venn Diagram is represented as two or more circles with some degree of superposition between them. It is used to make comparisons expressing similitudes and differences between things.
Each circle represents a category -in this example, sexual and asexual reproduction-.
The superposed area is named intersection and shows things in common between the two categories.
We already know that sexual reproduction occurs by the process of meiosis, while asexual reproduction occurs by mitosis.
In superior organisms, there are two types of cells: Somatic cells and germ cells.
The somatic cells are diploid (2n), meaning that each cell has a pair of equal chromosomes. The somatic cells are all the body cells except for the sexual ones, and they reproduce by the process of mitosis.
In somatic cells, one of the sets of chromosomes is inherited from the maternal side, while the other homologous set of chromosomes is inherited from the paternal side. Hence, the number of chromosomes in these double sets of the somatic cells is diploid, 2n.
Mitosis is a process through which, from a diploid somatic cell (2n), two identical daughter diploid cells (2n) are produced.
First, occurs duplication of the cell content, and then the separation into two new cells happens.
Germ cells suffer mitosis and meiosis.
Through meiosis, germ cells produce gametes, called sperm and egg cells, through the gametogenesis process.
Gametes are haploid (n) with half the number of chromosomes that might be found in the somatic cells.
During gamete formation, the pairs of homologous chromosomes separate after crossing over. Then, sister chromatids also separate. The result is the formation of four gametes.
Each gamete has different information from the combination of homologous chromosomes belonging to the father and to the mother.
Gametes' destiny is to merge in the process of fecundation, during which a new diploid cell called zygote emerges through fertilization.
The zygote is a complete cell that suffers successive mitosis to form the new organism.
Venn Diagram
Intersection area: Cell divisionAsexual: diploid, somatic, mitosis, genetically identicalSexual: haploid, gamete, meiosis, chromosomes separate , genetically different.--------------------------------------------------------------------------------------------------------
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3. If oxygen is unavailable to the cell...
A. glycolysis will proceed directly into the Kreb's Cycle, then the Electron Transport Chain
B. glycolysis will proceed directly to the Electron Transport Chain, bypassing the Kreb's Cycle
C. glycolysis will proceed into either lactic acid or alcoholic fermentation
D. glycolysis will not be able to occur; the cell will be unable to make ATP
my guess is C
Can someone explain what polymers, monomers, and isomers are to me? What is the difference between isomers and polymers? Thanks, I'm studying for a test in about a week :)
Answer:
A monomer is a single unit of a substance (eg. Amino acid). A polymer is a chain of monomers (eg protein). An isomer is a molecule of an element with the same chemical formula but a different chemical structure (sucrose and maltose).
Explanation: