experiment yeast fermentation ，what is the purpose of boiling the glucose solution earlier？
Answer:
The correct answer is - to sterilize it and remove any oxygen.
Explanation:
Boil the glucose solution to sterilize it and remove any oxygen, leaving behind the glucose needed for anaerobic respiration. High temperature kills all the microbes and sterilizes the solution.
Boiling the glucose solution earlier also helps in removing the oxygen from the solution for preparing the anaerobic respiration in the experiment desired. Sterilization of the solution also helps it in avoiding any microbes to present in the solution and affect the experiment.
A morning glory has a {BLANK}
form of corona.
Answer:
I think the answer is
A morning glory has a risen form of corona
When the Moon appears to be shrinking it is called...
A.Gibbous
B.Waning
C.Waxing
Answer:
the answer would be B Waning
What kind of virus caused the 1918 pandemic?
Answer:
The answer is Spanish flu
Answer:
H1N1 virus with genes of avian origin
Explanation:
The outbreak was caused by an influenza type, where the subtype of it is know as H1N1 virus.(. Characterization of five of the eight RNA segments of the 1918 influenza virus indicates that it was the common ancestor of both subsequent human and swine H1N1 lineages, and experiments testing models of virulence using reverse genetics approaches with 1918 influenza genes have begun in hopes of identifying genetic features that confer virulence in humans..... EXTRACTED FROM A TEXT FOR MORE INFO)
In order for water to collect in earths atmosphere and form clouds it must first undergo what process?
A) condensation
B) convection
C) evaporation
D precipitation
Answer:
The answer is D: Precipitation
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The length of days and nights at any location on Earth depends on the Earth's position with respect to the sun. Esmeraldas is at latitude 01°00'N. Which of these statements best describes the length of days and nights at Esmeraldas in the months of January and June? (1 point)
The days are longer in January and shorter in June.
The days are longer in June and shorter in January.
The lengths of days and nights are almost same in June and January.
The lengths of days are shorter and nights are longer in both June and January.
The answer is The days are shorter and nights are longer. In June, the sun is at its maximum inclination in the Northern hemisphere due to the earth's tilt with respect to the sun (Summer Solstice). Therefore, countries in the Southern hemisphere, such as Austrailia, will experience longer nights than days.
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A cell has a 2\%2%2, percent salt concentration. It is placed into a solution containing a 2\%2%2, percent salt concentration. What will happen to the cell?
Answer:
Neither the solute nor the solvent (water) will move in any direction
Explanation:
Concentration of salt with in the cell = 2%
Concentration of salt of the solution in which the cell is placed is 2%
Since there is no change of concentration of salt with in cell and outside the cell. Hence, there will be no net movement of solute or solvent.
Home land of Shorea robusta is
a) alpine zone
b) temperate zone
c) tropical zone d) sub alpine zone
Answer:
c) tropical zone
Explanation:
Florida orange growers often have hundreds of trees in their orchard, similar to those shown here. Florida temperatures can be
mostly tropical or temperate. However, even areas of southern Florida can be exposed to freezing temperatures in the winter.
Suppose that an extreme frost affected an area where the orange orchard is growing. Predict the impacts of this event on the
orange trees. Select ALL that apply.
A)
The trees will undergo mutations that enable them to survive harsher and
colder winters in the future.
B)
This could result in a population bottleneck, where few trees survive,
resulting in lowered genetic diversity
C)
The trees will undergo artificial selection which results in only trees that
are better adapted to freezing temperatures
D)
Trees with the ability to survive the freezing temperatures will reproduce
and create offspring with similar genetic makeup.
E)
The trees in the orchard may all be of similar genetic origin, resulting in a
common tolerance or susceptibility to the freezing weather.
Answer:B,D,E
Explanation: ur welcome
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The possible impacts include common tolerance or susceptibility, population bottleneck and similar genetic makeup (Options B, D and E).
Common tolerance is due to the selection of trees that are tolerant to these environmental conditions.Population bottleneck is a consequence of the decrease in genetic variability as a consequence of selection.Similar genetic makeup is due to the reduction in genetic variation of the original population.In conclusion, the possible impacts include common tolerance or susceptibility, population bottleneck and similar genetic makeup (Options B, D and E).
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Which organisms break down decaying organisms and produce an inorganic nutrient pool in ecosystems?
Group of answer choices
secondary consumer
decomposers
primary consumer
producers
Answer:
Decomposers
Explanation:
Decomposers eat decaying or dead organisms to produce the nutrients.
What is the advantage and disadvantage of drug abuse
Underground water is an example of
A) a hidden water source
B) a untapped water
source
C) an unusable water source
D) a high salinity water source
Answer:
i think its a hidden water source
1. Which of the following best explains how
behaviors, such as swarming and flocking, help
protect organisms?
a. Individuals in swarms or flocks act as decoys
to distract predators.
b. The movement and size of the swarm
or flock confuses predators.
c. Working together in swarms or flocks
requires less energy
d.The size of most swarms and flocks
can overtake larger predators.
Which of the following is NOT a type of wetland?
a: marsh
b: bog
c: swamp
d: pelagic
Explanation:
i have no clue, but good luck, hopefully you pass the test
What changes when a cell divides into two daugther cells to make it easier for the cells to exchange materials across the surface of the cell? A. Cell division does not make it easier to transfer materials across the cell surface. B. The new cells move materials faster. C. Each new cell has an increased surface area to volume ratio
The new cell has an increased surface area to volume ratio is a process that makes easier the exchange of materials across the surface of the cell (Option C).
What is cell division?Cell division is the process by which cells generate new daughter cells, which may be due to mitosis or meiosis in higher organisms.
Cell division is able to increase the surface/volume ratio and therefore it facilitates the movement of materials in the resulting cells.
In conclusion, news cell has an increased surface area to volume ratioand it makes easier the exchange of materials (Option C).
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How many different synthetic materials are included in a firefighter's jacket?
Answer:
3 materials
Explanation:
The jacket and trousers worn by a firefighter have to be constructed from materials that will withstand intense heat. Aramid fiber is a synthetic fiber that is highly regarded for its strength and heat resistance. Nomex is the trade name for arimid fiber clothing, and this type of material is used in the construction of a firefighter jacket and trousers. Nomex is often combined with Kevlar to increase the strength of the material.
Answer:
Firefighters jackets are made of fire resistant fabrics such as Nomex, Aramid or Kevlar. Bunker gear or turnout gear is the term used by many fire departments to refer to the protective clothing worn by firefighters.
genetic variation can be increased by???
Answer:B i searched i up so it is not
prob correct
Explanation:
Answer:
b
Explanation:
Which animal is a tertiary consumer in this food chain?
Answer: EL ANIMAL QUE ES CONSUMIDOR TERCERIANO ES LA SERPIENTE
xplanation:PORQUE ES CARNIVORO
Which of the following creates an
allluvial fan
A The buildupci sediment at the mouth of a
3. The seriment deposits by the side of flooding
C. The sticons that leave deepvalleys and
D. There is by ters,
_______________________ is an animal's ability to blend into its surroundings.
a
artificial selection
b
evolution
c
natural selection
d
camouflage
[tex] \huge \color{magenta}{ \boxed{ \large \sf \color{blue}{d. \: Camouflage}}}[/tex]
Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's wings.There is no way to get rid of invasive species, so there is no reason to even attempt.
A.) True
B.) False
Answer:
False
Explanation:
Scientists have tried to remove them or kill them.
help ! look at picture
In co-dominance, two dominant alleles are expressed at the same time.
true or false?
false
because in co dominance two dominant alleles are completely expressed.
Absorbe nutrientes por medio de micro vellosidades que recubren y aumentan la superficie de absorción
Sobre la pregunta:
Cucigrama. Pregunta 1 vertical. Absorbe nutrientes por medio de micro vellosidades que recubren y aumentan la superficie de absorción
Answer:
Intestino delgado
Explanation:
El intestino delgado es el organi mas largo del tubo digestivo, pudiendo medir 7 metros de longitud y 3 cm de diametro. Se caracteriza por estar sumamente plegado sobre si mismo. La primera porcion, llamada duodeno, recibe secresiones de glándulas biliar y pancreática, y las mezcla con enzimas digestivas. Esta mezcla se encarga de degradar la comida y transformarla en sustancias solubles, como amino ácidos.
Es en el intestino delgado donde ocurre la absorción de nutrientes. Las paredes intestinales estas cubiertas por microvellosidades que aumentan la superficie de absorción.
Las microvellosidades son células que componene el epitelio columnar, y que extienden proyecciones hacia el lumen del organo.
The sequence below represents one side of a DNA strand.
GAA TTC GCA
What would the complimentary DNA strand be during the process of DNA replication?
CUU AAG CGU
GAA CCT CAT
CTT AAG CGT
GAA TTC GCA
Answer:
GAA TTC GCA Original strand
CTT AAG CGT Complimentary strand
Explanation:
The original strand is already given. It is GAA TTC GCA
Now we need to recognize the complementary strand from the pool of options and pair their bases. Names are written with their letters.
Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines.
Adenine (A) and guanine (G) derive from purines, Thymine (T) and Cytosine (C) derive from Pyrimidines.In the DNA molecule, Adenine (Purine) forms pairs with Timine (Pyrimidine), while Guanine (Purin) pairs with Cytosine. Two hydrogen bonds join the A-T pair, and three hydrogen bonds join the G-C.
Knowing this, we need to find the correct option, which will pair A with T and C with G.
1st Strand → CUU AAG CGU → You can eliminate this option because it includes Uracil, which is a base of RNA. Uracil complements with Adenine, but only in RNA, and now we are looking for a DNA complementary strand.2nd Strand → GAA CCT CAT → None of the triplets pair correctly the original strand. It is not complementary4rth Strand → GAA TTC GCA → This is equal to the original strand. It does not complement it. 3rd Strand → CTT AAG CGT → The three triples complement the ones of the original strand. This is the correct option.G ⇔C
A ⇔ T
A ⇔ T
T ⇔ A
T ⇔ A
C ⇔ G
G ⇔ C
C ⇔ G
A⇔ T
Which gas is used by humans in the process of cellular respiration?
Answer: Oxygen
Explanation:
During the process of cellular respiration, carbon dioxide is given off as a waste product. This carbon dioxide can be used by photosynthesizing cells to form new carbohydrates. Also in the process of cellular respiration, oxygen gas is required to serve as an acceptor of electrons.
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Answer:
oxygen
Explanation:
we breathe it in during cellular respiration
Is the correct order in a homeostatic feedback system stimulus, receoptor, control centre, effector?
Answer:
Correct
Explanation:
Homeostatic is nothing but ability of a system or living organism to manipulate its internal environment to maintain a stable equilibrium, for example the ability of warm-blooded animals to ascertain a constant body temperature.
The Homoeostatic feedback mechanism has three basis components and they are independent to one another.
These components are receptor, effector and integrating center. The function of receptor is to sense external stimuli and send information to integrating center. The integrating center generally hypothalmus in brain sends this signal to effector for example an organ to react to the stimuli.
So, the order in a homeostatic feedback system stimulus, receoptor, control centre, effector is correct.
7. Mutations in DNA occur when there is a change in the base-pair sequence of a gene. Which of these is
not an accurate statement about mutations?
A. Most mutations occur when a cell copies its DNA for cell division.
B. Mutations can involve adding, removing, or substituting genes.
C. Mutations always cause a change in the phenotype of the organism.
D. Mutations can be beneficial.
Answer: C
Explanation: None
the parts of DNA that provide the code for the protein are the
Answer:
the bases / base sequence!
Explanation:
Hope that helps!
A scientist is examining cells under a microscope. Which would best help the scientist identify the tissue as plant or animal?
A. The presence or absence of a cell wall
B. the presence or absence of DNA
C. Plant cells would be green
D. Animal cells would contain a nucleus
SORRY FOR THE LITTLE POINT PLEASE ANSWER ITS DUE IN 2 MINUTES
Answer:
I think the answer is A
Explanation:
The presence or absence of a cell wall is examining cells under a microscope.
What is Cell wall?Cell walls are a specific type of extracellular matrix that cover every plant cell. Many of the traits that set plant cells apart from animal cells are caused by the cell wall.
The cell wall serves a variety of activities that are essential to plant life, despite being frequently thought of as an inert product used only for mechanical and structural purposes.
These include: giving the living cell mechanical defense and a chemically insulated environment; offering a porous medium for the circulation and distribution of water, minerals, and other small nutrient molecules.
Therefore, The presence or absence of a cell wall is examining cells under a microscope.
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