1. At the end of the first half-life We would have 300 g
2. After 4 half-lives, We would have 37.5 g .
What is the half life?The half-life is a term used in various fields, including physics, chemistry, and biology, to describe the decay or disintegration of a substance over time.
We know that the half life is the time that it takes for the half of the original amount to remain hence it follows that after the first half life, we are going to have;
1/2 * 600 g = 300 g
After the second half life;
1/2 * 300 g = 150 g
After the third half life
1/2 * 150 g = 75 g
After the fourth half life;
1/2 * 75 g = 37.5 g
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Which statement best explains why the classification
schemes of taxonomists have changed over time?
A. New technology like DNA sequencing allows scientist to have a more accurate genetic evolutionary history
B. New information about the genetics of species is being discovered.
C. Molecular biology has provided more detailed evidence for the relationships
between organisms.
D. All of the above
Answer:
D.
Explanation:
Sana tama kase feel ko pang
Classification of organisms is defined as dividing living beings into different kingdoms based on their genetics, traits, and other features.
Why did Classification Schemes of taxonomists change?Taxonomists arrange and divide the organisms based on the DNA, traits, and features of the living organisms. The advancements in technology led the taxonomists to have more information on genetic lineage and arrange them accordingly. Introduction and discoveries of new species, their genetic make-up, and traits also contribute to the change of classification system. Molecular biology, cellular level studies, and genetics of species have contributed to the classification of organisms.
Thus, the given statements about the classification of organisms are correct.
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Is the Great Green Wall an example of Secondary Succession?
Answer:
The Great Green Wall is taking root in Africa's Sahel region, at the southern edge of the Sahara desert. The Great Green Wall is a symbol of hope in the face of one of the biggest challenges of our time - desertification. This game changing African-led initiative aims to restore Africa's degraded landscapes and transform millions of lives in one of the world's poorest regions, the Sahel.
Primary succession occurs on land where no previous growth has taken place and there is no substrate/soil. Secondary succession occurs on land where there has been previous growth, the soil and seed bank makes up the substrate.
Explanation:
I majored in Biology
5.Muscle that is attached to bones for movement and helps protect your inner organs is ____________________________.
smooth muscle
cardiac muscle
skeletal muscle
Answer:
cardiac muscle
I'm pretty sure that's the correct answer
True/False: Chromosomes contain genes that are
made of DNA and the order of nitrogen bases control
how the traits will be expressed (show up).
True
False
Answer:
True
Explanation:
Chromosomes do contain genes, and genes are in the cell nucleus. :)
What are the biological implications of the structure of the plasma membrane (how do your results about the fluid mosaic and findings relate to life and death in the ‘real’ world? Where could the materials you worked with be found affecting the real world?)
Answer:
Structure of Plasma Membranes
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Explanation:
Which of the following diagrams shows a pure substance that is composed of only individual atoms and not molecules?
Answer:Argon Gas maybe?
Explanation:Just got it right lol
5. All cells
a. Are enclosed in a membrane that maintains internal conditions different from the surroundings
b. Have DNA as genetic material
c. Require energy to function
d. All of the above are correct
1 point
Which explanation best identifies the relationship between mitosis and
reproduction? *
Mitosis is a form of sexual reproduction because the daughter cells form from one
single parent cell.
Mitosis is a form of sexual reproduction because the daughter cells are genetically
different from the parent cell.
Mitosis is a form of asexual reproduction because the daughter cells form a new
nuclear membrane after reproduction
Mitosis is a form of a sexual reproduction because the daughter cells are genetically
identical to the parent cell.
Answer:
Mitosis is a form of sexual reproduction because the daughter cells are genetically identical to the parent cell.
Explanation:
If you look up your question, it will give this exact answer.
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Answer:
any problem with anthing??
The atomic number of Re is 75. The atomic mass of one of its isotopes is 186. How many electrons are in this particular isotope.
Answer:
75 electrons
Explanation:
Since there is no charge, electrons and protons are the same number. Atomic numbers indicate the amount of protons.
PLS HELP ASAP!!!!!!!
Answer:
3. A and B are true
4. oxygen, photosynthesis, I think oxygen, cellular respiration
Explanation:
Hope this helps! :) I am think all of my answers are correct.
PLEASE I NEED HELP ILL GIVE BRAINIEST !!!!
Answer:
the correct sequence of arrangement of level of ecological organization from least to most inclusive is organism,population, community
Answer:
Its below in the explanation
Explanation:
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Since species is the widest category.
Put "Single Trait Genes" in a sentence
Answer:
Mendelian inheritance refers to the inheritance of traits controlled by a single gene with two alleles, one of which may be dominant to the other. Explanation:
Hope this helps
Answer:
Basically inheritance of traits controlled by a single gene with two alleles, one of which may be dominant to the other
Explanation:
Single Genes Autosomal Traits are a example.
1. A group of individuals of the same species that mate and produce offspring is called a
A. gene pool.
B. niche.
C. genetic family.
D. population.
2. Any change in the genetic material of a cell is called a
A. mutation.
B. single-gene trait.
C. genotype.
D. polygenic trait.
3.In genetic terms, evolution is defined as any change in the relative frequency of
A. a single-trait gene of a population over time.
B. alleles in the gene pool of a population over time.
C. genes in a population over time.
D. phenotypes of a population over time.
A receptor is a set of modified dendrites of the:
a. nerve.
b. interneuron.
c. motor neuron.
d. sensory neuron.
Go find 5 materials that's u can use in ur garden.
Please answer.
Answer:
Soil knife to make digging the soil easierHandheld pruners to fix and prune the plants of your gardenGloves to keep your hands save from any harmful or chemical substance.Binder twine to maintain the plants (to tie their stems together)A notepad and pen to check the progress of your plants (e.g.: you might need to note down whether a plant may need more water or nutrients (mineral ions), if you see a plant almost wilting, appropriate actions must be taken so notepad and pen can help you track this down, so that you can get the appropriate resources needed)(Done with the help of goxogle, but summarized, check full website here: https://gbbg.org/2020/03/5-tools-garden-bag/ )
3. Explain the role of organisms in the carbon
cycle and oxygen cycle
What organism? If its plants, they give oxygen during the day and carbon dioxide in the night. While animals give carbon dioxide but take oxygen from the air. These carbon dioxide gas and oxygen gas go to the atmosphere and affect the carbon cycle and oxygen cycle.
Here is the cycle if you want to know more
Plants (give out oxygen) -> Animals (Use oxygen) + (given our carbon dioxide) -> plants (take oxygen)
and so on
Answer:
Plants take carbon from the atmosphere in the form of carbon dioxide during photosynthesis. Plants and animals both release carbon dioxide back into the atmosphere through the process of respiration. When organisms die, some of the carbon in their bodies is stored in the soil, which can be reintroduced into the atmosphere through soil respiration.
Explanation:
sample response
What is Carbon Dioxide?
A medicine
B candy
C colorless gas
D special kind of steel
Answer:
Colorless gas
Explanation:
The number of atoms gained lost or shared by an atom in a chemical bond is also known as
A it's charge
B it's atomic number
C it's valency
D its mass number
Anatomy
Label each of the following structures or processes.
Answer:
A - DNA
B - mRNA
C - nuclear pore
D - tRNA
E - ribosome
F - rRNA
Explanation:
The entire structure illustrates the process of transcription and translation in a typical eukaryotic cell.
The DNA (A) in the nucleus of the cell is first transcribed to mRNA (B). The mRNA produced is transported to the cytoplasm through the openings within the nuclear membrane - the nuclear pores (C). On getting to the cytoplasm, the mRNA binds to the ribosome (E) (carrying rRNA, F). The tRNA (D) carrying the specific anticodon for a particular codon on the mRNA then binds to the structure and the corresponding amino acid is released. A polypeptide bond is formed between subsequent amino acids and the ribosome moves along the mRNA chain until the translation process is complete.
What is the universe made of
Answer:
composition
Explanation:
the universe is composed almost completely of dark energy, dark matter , and ordinary matter
Answer: matter , atoms
Explanation:
Where are most mountains on earth formed
At volcanic chains
At strike slip faults
At mid ocean ridges
At convergent plate boundaries
Which organism(s) between w,x,y and z represent a secondary consumer ?
1.x
2.w and y
3. W,y and z
4.z
Two plants were being tested for growth. Both were given water and proper soil, etc. However, one was placed in the closet, and one was placed in the window sill. Why did the one in the closet die?
Question 4 options:
It did not have chloroplasts.
It was not around other plants.
It did not receive sunlight.
It was not around people enough.
Answer:
It did not receive sunlight.
Explanation:
Plants need sunlight to survive along with water and nutrients from the soil.
1.
Young hermit crabs pick up sea anemones which live on their shells. The stingy tentacles of the anemone keep fish from eating the hermit crab, and the sea anemone is able to eat leftover food from the hermit
crab. Which best describes the relationship between the sea anemone and the hermit crab?
A commensalism
B. O mutualism
c. parasitism
DO predation
Answer:
mutualism.
Explanation:
Mutualism can be defined as an symbiotic relationship or interaction between two or more living organisms of different species that typically involves each organism benefiting positively. Therefore, mutualism influences the survival and reproduction of living organisms in their habitats.
In this scenario, young hermit crabs pick up sea anemones which live on their shells. The stingy tentacles of the anemone keep fish from eating the hermit crab, and the sea anemone is able to eat leftover food from the hermit crab. Therefore, the relationship between the sea anemone and the hermit crab is best described as mutualism because both of them are benefiting from the interaction.
Simply stated, the sea anemone provides protection (security) from predators for the hermit crab while the hermit crab provides food for the sea anemone.
You only have to answer the first question. I will give brainliest to the best answer.
Answer:
The mushroom is composed of two parts, the above ground part, and the underground part. Each part has its unique function and purpose in the life cycle of a mushroom.
Spores
It is usually released into the air and falls on the ground to start the life cycle of the mushroom. Seeds that acts as the mushrooms reproductive system.
Stem
A soft branch is supporting the mushroom’s cap.
Gill
Located under the cap, it produces the spore of the mushroom.
Mycelium
This part of the mushroom serves as the breeding ground of smaller mushrooms to grow.
Hypha
The microscopic filament that draws water and the organic matter necessary for mushroom development.
Volva
The remnant of a membrane that completely covers the immature mushroom.
Ring
A covering located under the cap surrounding the stem.
Cap
The upper part of the mushroom that protects the gills. It usually resembles a headdress, hence its name.
Hope it helps!!!
How do the distances between the terrestrial plants compare to the distances between the gas giants?
Answer:
They are different from rocky or terrestrial planets that are made of mostly rock. Unlike rocky planets, gas giants do not have a well-defined surface – there is no clear boundary between where the atmosphere ends and the surface starts! The gas giants have atmospheres that are mostly hydrogen and helium.
Explanation:
I hope this helps!
They vary from planets that are predominantly made of rock, such as rocky or terrestrial planets. Unlike solid planets, gas giants lack a clearly defined surface, there is no discernible line separating the atmosphere from the surface.
What are terrestrial planets?Telluric planets are another name for terrestrial planets. The Latin words terra and tellus, which both indicate Earth, are the source of the words terrestrial and telluric, respectively.
While the terrestrial planets were warmed by the sun's rays, the Jovian planets developed above the frost line.
Worlds that could float on water and worlds appropriate for manned missions were created under very distinct circumstances, but they have some striking similarities. Every world in our solar system is different.
Therefore, the atmospheres of the gas giants are primarily composed of hydrogen and helium.
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Sound waves travel better through solid than through a gas. Explain why this is true.
Answer:
solids are more tightly packed together (the molecules) than liquid or gas so it allows it to travel through vetter/faster
Answer:
Explanation: Solids are packed together tighter than liquids and gases, hence sound travels fastest in solids. The distances in liquids are shorter than in gases, but longer than in solids. Gases are the slowest because they are the least dense: the molecules in gases are very far apart, compared with solids and liquids
Which distinguishes mitosis from meiosis?
A. Mitosis has one DNA replication, while meiosis has two DNA replications.
B. In mitosis, the nucleus divides once. In meiosis, the nucleus divides twice.
C. In mitosis, homologous chromosomes pair up. In meiosis, there is no pairing of chromosomes.
D. Mitosis results in the production of gametes, while meiosis results in the production of body cells.
Answer:
Your answer would be B.
Explanation:
In mitosis, the nucleus divides once. In meiosis, the nucleus divides twice.
Answer:
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Surface mining is less dangerous and more profitable than subsurface mining
Answer:
Surface mining is the extraction of mineral and energy resources near Earth's surface by first removing the soil, subsoil, and overlying rock strata. ... Surface mining disturbs the land more than subsurface mining, but subsurface mining is more expensive and dangerous.
Explanation: