Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata (Figure 3b).
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
The option (A) is the correct answer. This statement is the required answer.
Which of the following is not a source of genetic variation?
A
sexual reproduction
B
asexual reproduction
C
mutations
D
crossing over during meiosis I
All prokaryotes are _________ eukaryotes
More complex than
Smaller than
Larger than
Similar in size to
A strain of Neisseria gonorrhea has a mutation which has caused it to lose the ability to produce fimbriae and become less virulent as a consequence. What function has this pathogen lost
Answer: The pathogen has lost the function of the ability to adhere to cells of the body.
Explanation:
Neisseria gonorrhea is a gram negative bacteria that has the ability to attack and cause disease in man using its virulent factors. It is know to attack the urethra of both male and female producing an acute urethritis and tenda to spread locally if not treated. The virulent factors determines the ability of the organism to infect or damage it's hosts tissues and they include:
--> endotoxins
--> pilli
--> fimbriae
--> capsule polysaccharide expression
The fimbriae is one of the virulent determinants which the organism uses to attach to the host cells. As these bacteria multiple and grow, there are chances of mutation occuring. MUTATION is defined as the errors during DNA replication or induced by exposure to mutagens (like chemicals and radiation)
If the bacteria is affected by mutation, which can cause the gene for fimbriae production not to be expressed, the virulent factor of the organism will be highly affected as the first step to cause an Infection which is attachment is lost.
What is sprouting
How do we commonly make curd at home
Answer:
Sprouting is the natural process by which seeds or spores germinate and put out shoots, and already established plants produce new leaves or buds or other newly developing parts experience further growth.
Differentiation of cells has an important role in the cell division of complex organisms. What would happen without this differentiation of cells?
Explanation:
sana po nakatulong sainyo thanks❤
Cells are the basis of the survival of human beings. We, the living organisms are made up of cells. If cells won’t divide no new organisms would originate.
What is cell division?
Cell division is the process by which a parent cell divides, when a mother cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle. Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.
The existing cells will die and no new cells will be produced as there is no cell division.
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If 65,000 kcal are
available in the
producers trophic
level, how much
energy is available
to the secondary
consumers?
Answer:
13000 would be avalable because 10% is taken every time it is eaten so 65,000 with 10% taken out twice (20% of 65,000) is only 13,000 kcal available to the secondary consumers.
HELP!
Which of the following would help clouds form?
a. Air flows down the eastern slope of the Rockies near Browning.
b. Air on a barren mountain slope gets hot and begins to rise.
I would say b, because the water molecules would go up in to the atmosphere and become a cloud.
11. The heart is made of *
O involuntary cardiac muscle
O voluntary muscle
O skeletal muscle
Answer:
involuntary muscle
Explanation:
The heart has 4 different lobes with two on each side and arteries connecting both sides. The heart is made of bones and involuntary muscle. This is the reason why the heart is able to make beats. The answer is involuntary muscle.
↬Define a Cell in Biology.
The cell is the basic structural, functional, and biological unit of all living organisms.
The structural and essential component of life is the cell. Cell biology is the study of cells, including their fundamental makeup and the purposes of each of their organelles.
The first biologist to discover cells was Robert Hooke. Cells make up every living thing. They could consist of several cells (multicellular) or just one cell (unicellular) (multicellular).
The tiniest cells known to science are mycoplasmas. All living things are constructed from cells. They give the body structure and turn the nutrients from the diet into energy.
Complex cells conduct a variety of tasks for an organism's parts. They resemble masonry bricks in that they come in a variety of sizes and forms.
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PLEASE HELP IM ABOUT TO FAIL THE CLASS!!
What is mainstreaming?
*SOCIOLOGY*
Forensic biologists are testing a DNA sample that has no match found in the system using SNP analysis. What helpful information could the biologists get from the SNP?
The sample was taken from someone with brown hair and blue eyes.
The sample was taken from an animal.
The sample was taken from an elderly person.
The sample was contaminated during collection.
Answer:
Option D
Explanation:
The SNP analysis is useful in determining response of an individual towards a drug and its environmental susceptibility. Thus, the SNP analysis in this case will give an indication of whether the sample was contaminated or not.
Hence, option D is correct
The ability of our bodies to maintain internal stability is called:
A. Balance
B. Digestion
C. Hypertonicity
D. Homeostasis
Answer:
D. Homeostasis
Explanation:
The ability of our bodies to maintain internal stability is called: Homeostasis
Physics
Solve this
And also tell what is 1dm3
Explanation:
1 dm3 is a cube with dimension 1 deci meter
One cubic decimeter is the unit of volume which is exactly equal to one litre.
What is meant by volume ?Volume of an object is defined as the amount of space within the object which the matter can be occupied.
Here,
It is said that volume is a derived quantity.
Volume is said to be a derived quantity because, volume is the product of length, breadth and height of a three-dimensional shape.
It is given that,
1 L = 1000 mL
1 L = 1 dm³
1L = (10cm)³ = 1000 cm³
We know that, 1 cm = 10⁻²m
So, we can write that,
1L = 1000 x (10⁻²m)³
1L = 10³ x 10⁻⁶m³
Therefore,
1L = 10⁻³ m³
Or
1 m³ = 1000 L
1 dm³ or 1 cubic decimeter is the unit of volume, which is equal to one litre.
Hence,
One cubic decimeter is the unit of volume which is exactly equal to one litre.
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What is an oosphere in relation to biology
Answer:
oosphere (ovum; egg cell) The nonmotile female gamete in plants and some algae. Explanation:
an element that can bioaccumulate in lead to biomagnification is ____
a. hydrogen
b. oxygen
c. argon
d. Mercury
An element that can bioaccumulate in lead to biomagnification is Mercury.
What is biomagnification?"Biomagnification is defined as the accumulation of a particular (toxic) substance in the body of the organisms at different trophic levels of a food chain."The accumulated substance increases at each tropic level as we move from lower to top level.Examples of toxic substance: Mercury, arsenic, DDT.
Hence, the correct option is d. Mercury.
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Es verda que Las plantas de semilla se dividen en dos grupos de acuerdo con el lugar donde se desarrolla la semilla, en angiospermas y gimnospermas
Answer:
No.
Explicación:
No, las plantas de semilla no se dividen en dos grupos según el lugar donde se desarrolla la semilla en angiospermas y gimnospermas. Se dividen en dos grupos sobre la base de semillas desnudas y semillas cerradas. En las angiospermas, las plantas son plantas con flores que llevan sus semillas cerradas dentro de los frutos mientras que en cambio, en las gimnospermas son plantas que no producen flores y llevan conos y semillas.
40. Which table describes adaptations that allow organisms to survive in a desert environment?
Answer:
Explanation:it needs to be able to store water long periods of time
Often organisms seem similar in their outward appearances. For example, a porpoise and a shark seem closely related, but they are not. Such similarity is the result of .
Answer: Such similarity is the result of CONVERGENT EVOLUTION
Explanation:
Evolution can be defined as the theory that was developed based on the findings of scientists that living organisms are descended from a common ancestor.
The current theory of the process of evolution makes use of present day knowledge of genes and chromosomes to explain the source of genetic variation upon which natural selection works. It postulates that although natural selection is the only force that regularly produces adaptive evolutionary change, other forces too play a part in evolution.
Evolutionary changes may show the following patterns:
--> one species gradually transform into another species.
--> one or more species evolve as offshoots of a single ancestral species to fill a wide variety of habitat. This is known as divergent evolution.
--> Many superficially similar looking species arise from different ancestral species. This is known as CONVERGENT EVOLUTION. It is shown by organisms occupying very similar kinds of environment. That is why a porpoise and a shark seem closely related, but they are not.
What causes the plates in Earth's crust to move?
0 Ocean currents
O Solar energy
Convection cells
O Sea floor spreading
What creates a positive charge inside the cell during a nerve impulse?
A. Gated sodium channels open and sodium ions flood into the cell.
B. Negatively charged ions leave the cell and make the inside positive.
C. Carbon dioxide molecules break apart and become ions to create an overall positive charge.
D. Across the synapse, positively charged ions of many different elements flow into the cell.
Answer:
a gated sodium channels open and sodium ions flood into the cell
Which option identifies a consequence of the following scenario?
Tandy makes her own goat feed, but she finds it difficult to balance the correct ratio of vitamins and minerals.
parasites
gout
infertility
bloat
Answer:
blout
Explanation:
odysse yware
describe this process for VEGETATIVE PROPOGATION
Answer:
hsbshueueueueheheheheheh
An axon is a. a layer of fatty tissue that encases the fibers of many neurons. b. the extension of a neuron that carries messages away from the cell body. c. a molecule that blocks neurotransmitter receptor sites. d. a cell that serves as the basic building block of the nervous system.
Answer:
option b the extension of a neuron that carries messages away from the cell body
a group of cells which have a common origin,structure and function
Provide an example of how eukaryotic cells are used in biotechnology: *
Answer:
Eukaryotic cells are plants, animals, protists, fungi. Their genetic material is organized in chromosomes. Golgi apparatus, Mitochondria, Ribosomes, Nucleus are parts of Eukaryotic Cells.
Animals such as cats and dogs have eukaryotic cells.
Plants such as apple trees have eukaryotic cells.
Fungi such as mushrooms have eukaryotic cells.
Protists such as amoeba and paramecium have eukaryotic cells.
Insects have eukaryotic cells.
Humans are composed entirely of eukaryotic cells. Related Links: Examples.
Explanation:
Bacterial strains, especially Actinomycetes have been used in biotech production and drug discovery for years. Genetic methods now open the field of combinatorial biosynthesis that has improved impressingly in the past couple of years. Also, the productivity of yeast and other fungi in a variety of different processes has improved significantly since genetic methods have been introduced. In addition, a number of recent works considerably widens the potential of plant biotechnology. This review covers examples describing the use of prokaryotic cells and plant cells in biotech production.
Hope this helps! ^^
Bacterial strains such as Actinomycetes have been used in biotech production and drug discovery for years.
What is Biotechnology?Biotechnology is defined as the integration of natural sciences and engineering sciences to achieve the application of organisms, cells, their parts and molecular analogs to products and services.
It is described as the technology that uses biological systems, living organisms or parts thereof to develop or create various products such as brewing and baking bread are examples of processes that fall under the concept of biotechnology where the use of yeast i.e. living organism to prepare the desired product, bacterial strains such as Actinomycetes for making drug etc.
The most important area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering.
Thus, Bacterial strains such as Actinomycetes have been used in biotech production and drug discovery for years.
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pls help asap pls help
How do wales differ from fish
Answer:
Whales are mammals that need air from the sea's surface to survive. Whales are capable of giving birth to live young. Fish have gills and use them to draw oxygen from the water. The majority of fish lay eggs. Whales and other marine animals with horizontal tail fins, such as dolphins, have vertical tail fins, while fish have vertical tail fins.
hope this helped!
The factory district is planning on expanding. Which solution would Not minimize the impact?
A. Conservation easement between the farms and factories
B. Higher city taxes and lower suburban taxes
C. development permits specifying where the factory district could expand and fees for expansion
D. Zoning regulations and wetland areas
Answer:
higher city taxes and lower suburban taxes
Explanation:
Solution would not minimize the impact is Higher city taxes and lower suburban taxes.
Collecting taxes will not have any impact on maintaining sustainability.People if cities are more employed than the suburban ones and that’s the reason for variation in taxes not the expanding of the factories.What is sustainability?It is the responsibility to conserve nature and protect the ecosystem to support the health and wellbeing , now and in the future.It is used to indicate programs , initiatives aimed at the preservation of particular resource which might get extinct in the future.To know more about sustainability here
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Toxic gases enter earth due to
Explanation:
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities
Explain: What triggers each step in the synthesis of tryptophan?
Hello!
What triggers each step in the synthesis of tryptophan?
Each step is triggered by a specifi c enzyme. The tryptophan operon contains fi ve genes (trpA through trpE) needed to make the amino acid tryptophan. When tryptophan levels are low, RNA polymerase binds to the operator, turning on the transcription of the fi ve enzyme genes needed for tryptophan synthesis.
Ary~
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Each process is started by a unique enzyme. The five genes (trpA through trpE) of the tryptophan operon are required to produce the amino acid tryptophan.
What is a synthesis of tryptophan?The five enzyme genes required for tryptophan production are turned on by the binding of RNA polymerase to the operator when tryptophan levels are low.
Due to this, the cell either stops further synthesis or binds to a repressor, which induces the creation of the enzymes needed for its manufacture and synthesis.
When tryptophan levels are low, the trp operon is expressed (or "turned on"), and when levels are high, it is repressed (or "shut off"). The trp repressor prevents the operon from being expressed when it is linked to tryptophan.
Therefore, (trpA through trpE) of the tryptophan operon is required to produce the amino acid tryptophan.
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