The composition of the matrix of the connective tissue, which is present in between two bones is:
(a) calcium and phosphorous
(b) proteins and sugars
(c) calcium and proteins
(d) salts and hormones
Answer:
es la( a (
Explanation:
There are four mechanisms that can cause changes in the frequencies of genes in populations: mutation, migration, genetic drift, and natural selection. All four are mechanisms of evolutionary change. What is genetic drift? A) In a population, it is the changes in allelic frequencies of a gene that are due to chance. B) A random error/change in the DNA sequence. These may be inherited or occur in cells during the lifetime of the organism. C) Also known as gene flow. It is any movement of individuals and/or the genetic material they carry, from one population to another. D) There is variation in any population; differential reproduction occurs and over time a more
Answer:
There is variation in any population; differential reproduction occurs and over time a more
Explanation:
Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each cell? Explain.
Answer: 2
Explanation:
Each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.
At the end of cytokinesis, there will be 46 daughter chromosomes in each cell.
MITOSIS:Mitosis is the type of cell division that results in two daughter cells that are genetically identical to one another. According to this question, human cells possess 46 chromosomes, which divides during mitosis into daughter chromosomes called chromatids.Therefore, after cytokinesis, 46 daughter chromosomes will be present in each cell in order to maintain the chromosome number of the parent cell.
Learn more about mitosis at: https://brainly.com/question/13536882
for number 14 the answer is actually A AND B
HAPPY B-DAY MAN can i have brainliest i need one more
Write the importance of medicinal plants in human life.
Answer:
The importance of medicinal plants in human are as follow:
Medicinal plants are considered as a rich resource of ingredients.It is used in drug development either pharmacopeial and none pharmacopeial or synthetic drug.It has it's origin in ancient culture .Using medicinal plant doesn't have any side effects.Answer:
hope it'shelps you have a great day keep smiling be happy stay safe ☺11. Genetic diversity is an advantage of sexual reproduction. The grasshopper example at the end of
the video explains how it benefits the species as a whole by the grasshopper population having different
colors to help them hide from predators if the conditions around them change. Some are brown, some
are green. Describe another example that you can think of where genetic diversity benefits an organism other than a grasshopper. Be sure to give details to help support your response.
please helpppp
10. What would be an agricultural disadvantage to having a planting soil with high permeability?
Answer:
Excessive water loss
Explanation:
If the soil was super permeable than water would drain faster which could lead to excessive water loss which would not be good for crops
Having planting soil with high permeability will deprive crops of the necessary water and nutrient for growth.
Highly permeable soils have no capacity to retain water. they lose water at a very fast pace.
Lack of water retention means that the roots of plants will not be able to conduct the necessary water for metabolic activities in plants.
Thus, the growth and overall well-being of plants planted in such soils will be limited.
More on permeable soils can be found here: https://brainly.com/question/23887869?referrer=searchResults
I have a huge test tomorrow and I need to know every thing about Cells, like the eukarotic cell, i need to know the cell membrane, and osmosis.
Answer:
look it up or ask your friends to look it upmaybe?
Explanation:
Answer:
Cell Definition“A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.”
Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life.
Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids. Moreover, cellular structures called cell organelles are suspended in the cytoplasm.
Types of Cells.Prokaryotic CellsProkaryotic cells have no nucleus. Instead, some prokaryotes such as bacteria have a region within the cell where the genetic material is freely suspended. This region is called the nucleoid.
They all are single-celled microorganisms. Examples include archaea, bacteria, and cyanobacteria.
The cell size ranges from 0.1 to 0.5 µm in diameter.
the hereditary material can either be DNA or RNA.
Prokaryotes reproduce by binary fission, a form of sexual reproduction.
Eukaryotic CellsEukaryotic cells are characterised by a true nucleus.
The size of the cells ranges between 10–100 µm in diameter.
This broad category involves plants, fungi, protozoans, and animals.
The plasma membrane is responsible for monitoring the transport of nutrients and electrolytes in and out of the cells. It is also responsible for cell to cell communication.
They reproduce sexually as well as asexually.
There are some contrasting features between plant and animal cells. For eg., the plant cell contains chloroplast, central vacuoles, and other plastids, whereas the animal cells do not.
Functions of Cell:Provides Support and StructureFacilitate Growth MitosisAllows Transport of SubstancesEnergy ProductionAids in ReproductionCell Membrane The cell membrane supports and protects the cell. It controls the movement of substances in and out of the cells. It separates the cell from the external environment. The cell membrane is present in all the cells. The cell membrane is the outer covering of a cell within which all other organelles, such as the cytoplasm and nucleus, are enclosed. It is also referred to as the plasma membrane. By structure, it is a porous membrane (with pores) which permit the movement of selective substances in and out of the cell. Besides this, the cell membrane also protects the cellular component from damage and leakage. It forms the wall-like structure between two cells as well as between the cell and its surroundings. Plants are immobile, so their cell structures are well-adapted to protect them from external factors. The cell wall helps to reinforce this function.What is Osmosis?Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.
Any solvent can undergo the process of osmosis including gases and supercritical liquids.
Osmotic Solutions There are three different types of solutions:An isotonic solution: is one that has the same concentration of solutes both inside and outside the cell.
A hypertonic solution: is one that has a higher solute concentration outside the cell than inside.
A hypotonic solution; is the one that has a higher solute concentration inside the cell than outside.
Effect of Osmosis on CellsOsmosis affects the cells differently. An animal cell will lyse when placed in a hypotonic solution compared to a plant cell. The plant cell has thick walls and requires more water. The cells will not burst when placed in a hypotonic solution. In fact, a hypotonic solution is ideal for a plant cell.
An animal cell survives only in an isotonic solution. In an isotonic solution, the plant cells are no longer turgid and the leaves of the plant droop.
The osmotic flow can be stopped or reversed, also called reverse osmosis, by exerting an external pressure to the sides of the solute. The minimum pressure required to stop the solvent transfer is called the osmotic pressure
Significance of Osmosis Osmosis influences the transport of nutrients and the release of metabolic waste products.It is responsible for the absorption of water from the soil and conducting it to the upper parts of the plant through the xylem. It stabilizes the internal environment of a living organism by maintaining the balance between water and intercellular fluid levels. It maintains the turgidity of cells. It is a process by which plants maintain their water content despite the constant water loss due to transpiration. This process controls the cell to cell diffusion of water. Osmosis induces cell turgor which regulates the movement of plants and plant parts. Osmosis also controls the dehiscence of fruits and sporangia. Higher osmotic pressure protects the plants against drought injury.Which of the following limiting factors would have the least affect on poulation size?
A.
drought
B.
succession
C.
wildfire
D.
decomposition
Answer: D
Explanation:
If there was 26% Adenine, how much thymine would there be
Answer:
26%
hope it help you ....
Among unicellular eukaryotes, cell sizes differ greatly. Amoeba and Paramecium organisms are animal-like protists that are heterotrophic, have no cell wall, and are several times larger than most human cells. What might be some reasons why these unicellular organisms have larger cells than cells with similar traits (heterotrophic, lacking cell walls) that are found in multicellular organisms?
Such unicellular organisms have large cells to carry out all essential physiological functions like obtaining food, reproducing, movement, and others.
Unicellular organisms have different sizes generally have larger cell than multicellular organisms such as animal like protists. Animal like protists are large single-celled organisms, known as Protozoa that include Amoeba and Paramecium.
These cells have larger cell due to unicellular organisms have to fulfill all of it's requirements and provide space for various cell enzymes, organelles, other macromolecules and machineries within a single cell.They have to perform all characteristics of life, so they need a bigger cell for these functions.Thus, these cells have to perform all the physiological processes so required relatively bigger cell to function properly.
Learn more about animal like protist:
Through which material would sound travel the fastest?
A. air
B. water
C. steel
D. sponge
Answer:
A
Explanation:
Usually, an egg cell from a human female contains_________________.
Like a sperm cell, the egg contains a nucleus with half the number of chromosomes as other body cells.
(hope this helps ^^)
What are the products of the light-dependent reactions?
A. oxygen gas and glucose
B. ATP, NADPH, and oxygen gas
C. ATP, carbon dioxide gas, and NADPH
D. carbon dioxide gas, oxygen gas, and NADPH
Answer:
B. ATP, NADPH, and Oxygen Gas
Explanation:
what force pulls down the top of a wave
Answer:
wind whips it up and gravity pulls it down.
Explanation:
What property of electric current allowed Edison’s first light bulb to light?
Answer:
Electric current – The net movement of electric charges in a single direction through a wire or conductor. Voltage difference – The force that causes electric charges to flow; charges flow from high voltage to low voltage
Explanation:
Answer:
Explanation:What property of electric current allowed Edison's first light bulb to light? Electric current – The net movement of electric charges in a single direction through a wire or conductor. Voltage difference – The force that causes electric charges to flow; charges flow from high voltage to low voltage.
Which statement describes why natural populations cannons keep growing exponentially ?
A. Disease always affects large populations
B. Humans always disturb ecosystems
C. Resources are always limited
D. Natural disasters always control growth
Answer:
C resources are always limited
Explanation:
Pneumonia is caused by
pathogens
eubacteria
archaea
rickettsia
what happened to the amounts of carbon- 14 and nitrogen as each half-life passed? simple response
Answer: They simply decay into a nonradioactive isotope
Explanation: Hoped this helped
Which of the following is true of DNA and RNA nucleotides? (4 points)
Both contain a sugar and a cytosine nitrogenous base.
Both contain a sugar and thymine nitrogenous base.
Both contain deoxyribose sugar and uracil nitrogenous base.
Both contain ribose sugar and cytosine nitrogenous base.
Answer:
Both contain a sugar and a cytosine nitrogenous base.
Explanation:
DNA and RNA are both nucleic acids. However, the nucleotides bases) that make up each molecule have slightly different structures.
DNA stands for deoxyribonucleic acid because the sugar in the nucleotides is deoxyribose sugar.
RNA stands for ribonucleic acid because the sugar in the nucleotides is ribose.
DNA contains the bases cytosine, guanine, adenine, and thymine.
RNA contains one base different, it has cytosine, guanine, adenine, and uracil.
Therefore, they contain different sugars, but they both contain a cytosine nitrogenous base.
How would the world be different if there was no photosynthesis?
Answer:
Plants would require a different way to gain food, and some would go extinct or wilt many times before gaining strength back.
What is the term for the application of scientific information?
O A. Internet
O B. Technology
O C. Agriculture
O D. Transportation
What type of molecule forms the antibodies found in the human immune system?
Answer:
An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses.
which statement best describes the role of the plasma membrane in osmosis?
please help me
Answer:
The first statement
Explanation:
Osmosis is the transfer of water molecules from a low concentration to a higher concentration through a partially permeable membrane
The partially permeable membrane only allows water molecules to pass through
Therefore, the first statement best describes osmosis
Best definition of bioluminescence
Answer:
bioluminescence : production and emission of light by living organism which occurs through a chemical reaction.
Explanation:
( can be found in marine animals, fungi, bacteria, and terrestrial arthropod)
Please Help ASAP
Why don't plants need a digestive system?
A. They do not need nutrients to grow and develop
B. They use energy from the sun to make their own food
C. They create oxygen, which they use as food.
D. They absorb water and food through their roots.
Answer:
B. They use energy from the sun to make their own food
Help
Plssssssssssssss!
I’m not 100% but either B or D is the correct answer.
What is a strand of DNA which functions as a section of the genetic code called?
Answer:
gene
Explanation:
rocks are classified into three major groups what are they
Answer:
There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. Sedimentary rocks are formed from pieces of other existing rock or organic material.
Explanation:
The area labeled X is known as
A.
an atomic nucleus
B.
an active site
C.
a pH indicator
D.
a temperature regulator
ecule
An active site is the area at where the enzyme gets attached. The are labelled X is known as an active site.The correct answer is option B.
What is an atomic nucleus ?An atomic nucleus is the central region of the atom at which the number of protons and neutrons are in abundance. The charge carried by the nucleus is positive in nature.
The picture shows the lock and key method where it is the relation between enzyme and substrate where the enzyme and substrate are almost same in shape where the lock is the substrate where the enzyme is of key shaped and they both fit in.
An active site is the region of the reactant or substrate where the enzyme will bind in and the reaction will form a product. The binding of both the constituents depend on the binding energy and activation energy of the reaction.
Learn more about active site at :
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