It is crucial to avoid air bubbles in the assembled potometer. The plant stem must be cut underwater to prevent airlocks forming in the xylem. All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.
What is potmeter?An instrument used for measuring rate of Transpiration occurring from lower surface of leaf.
Thus, All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.
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6. The plant tissue that carries sugar from the
leaves to the roots is the
Answer:
phloem
Explanation:
I am pretty sure that this is right and the xylem carries the water. I hope this helps!! I am sorry if it is worked wrong.
What is the function of a chloroplast? A. Gamete production B. Cellular respiration C. Fermentation D. Photosynthesis
Answer:
So i had these notes from a couple of days ago and I’d like to help u out
Explanation:
Photosynthesis
Carbon dioxide enters through the leaf which contains small pours called stomata. The carbon dioxide then enters the cells of the leaf.
Inside the cell carbon dioxide diffuses into the chloroplasts. Where photosynthesis takes place
Chloroplasts use energy from sunlight to transform carbon dioxide and water into sugar and oxygen.
The light reactions
Inside chloroplasts there are these flat membranous sacs called thylakoids.
Thylakoids are the place were light energy is converted into chemical energy in the first phase of photosynthesis the light reactions.
Photosystems
Photosystems are large complexes of proteins and chlorophyll (capture light energy)
Electron transport chain
This chain connects the two photosystems.
Electron carrier
These shuttle (transport that is mainly between 2 things going back and forth) electrons from one photosystem to another
Photosystem
One of the photosystems are used to absorb energy which then excites the electrons that then enter the electron transport chain. These electrons are replaced with electrons stripped from water creating oxygen as a byproduct.
The electrons on the chain
The energised electrons are flowing down the electron transport chain releasing energy that is used to pump hydrogen ions
Hydrogen ions
An atom or molecule that has a net electrical charge due to the loss of one loss or one gained electron.
The electrons on the chain
As the hydrogen ions get pumped out they are then absorbed into the thylakoids
In the photosystem on the right light energy excites electrons and this time the electrons are captured by an electron carrier molecule also known as NADPH
The high concentration of hydrogen ions inside the thylakoid powers ATP synthase producing ATPS the light reactions in the thylakoid have produced two products, ATP and NADPH.
Those two products then power the production of sugar in the Calvin cycle
THE CALVIN CYCLE (C3 Cycle)
The Calvin cycle takes place outside the thylakoids in the stroma (the thick fluid of the chloroplast).
At the beginning of the cycle
carbon dioxide molecules combine with molecules called rubp the resulting molecules go through a series of reactions powered by ATP and NADPH from the light reactions sugar molecules known as g3ps are produced.
G3ps
Most of the g3ps molecules are rearranged back into rubp’s that begin the calving cycle again.
The important product
Then some of the left over g3ps is the remaining g3p sugar, some g3ps are used to build glucose which can then combine into starch or even cellulose
Bits of left over g3ps are also able to break down by cellular respiration, which uses oxygen in the plants own mitochondria, this generates ATPS that can power other work of the plant.
The left overs
Excess oxygen diffuses out of the leaf through the pores while more carbon dioxide goes into the leaf pores.
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Which compound is a reactant of both cellular respiration and dehydration synthesis? (1 point)
O glucose
O oxygen
O water
O ATP
Answer:
glucose
Explanation:
I had a test with this, and it was glucose.
Glucose is a reactant of both cellular respiration and dehydration synthesis
WHAT IS CELLULAR RESPIRATION?
Cellular respiration is the process by which living organisms obtain energy from organic sources. Cellular respiration combines glucose and oxygen as reactants to form carbon dioxide (CO2), water (H2O), and energy.WHAT IS DEHYDRATION SYNTHESIS?
Dehydration synthesis is a reaction whereby two smaller molecules come together to form a larger molecule with the loss of water. An example of dehydration synthesis reaction is the formation of starch from the reaction of glucose molecules with the loss of water.Therefore, glucose is a reactant of both cellular respiration and dehydration synthesis.
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4. Which of the following is an important characteristic of a scientific theory?
a, proven by more than one scientist
b. unchanged by new evidence
c. accepted by the public
d. supported by much evidence
answer please it's urgent
Answer:
b
b
c
b
Explanation:
SEE THE IMAGE FOR SOLUTION
HOPE IT HELPS
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Define taxonomic hierarchy....
Answer:
In biological classification, taxonomic rank is the relative level of a group of organisms in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, order, class, phylum, kingdom, domain, etc
Explanation:
What is taxonomic hierarchy?
“Taxonomic hierarchy is the process of arranging various organisms into successive levels of the biological classification either in a decreasing or an increasing order from kingdom to species and vice versa.” Each of this level of the hierarchy is called the taxonomic category or rank.
As temperature rises from 25 degrees to 60 degrees, the material heat and its kinetic energy as the material goes through vaporization to become a gas.
1. absorbs, increases
2. releases, does not change
3. multiplies its, is divided
4. remains the same, decreases
Answer:
1
Explanation:
the material absords heat ( so the temperature increase or the heat can be use to increase kinetic energy)
increase its kinetic energy
Hello i need help with this it’s just short (The subject is science and Im sorry if i got the subject wrong from the above) Thank you in advance <3
1. Forest ecosystems provide all of the following functions EXCEPT;
a. producing oxygen
b. controlling soil erosion
c. removing carbon from the atmosphere
d. lowering the biodiversity of the plant
2. Extinction is a natural process that occurs when the last member of a species does. Which of the following correctly arranges the mass extinction events from earliest to latest?
a. Cretaceous-Tertiary, Ordovician-Silurian, Late Devonian, Permian-Triassic, Triassic-Jurassic
b. Late Devonian, Cretaceous-Tertiary, Ordovician-Silurian, Permian-Triassic, Triassic-Jurassic
c. Ordovician-Silurian, Late Devonian, Permian-Triassic, Triassic-Jurassic, Cretaceous-Tertiary
d. Ordovician-Silurian, Permian-Triassic, Triassic-Jurassic, Late Devonian, Cretaceous-Tertiary
3. Which contributes the most biodiversity loss?
a. habitat destruction b. pollution
c. invasive species d. population growth
4. Extinction can be caused by a Natural Phenomenon such as storm, flash floods, or Anthropogenic (Human made). Which of the following is believed to be the major and most impactful anthropogenic cause of extinction?
a. habitat destruction b. overpopulation
c. overexploitation d. pollution
5. Which of the following is not a benefit that tress can provide?
a. They can trap sediments and runoffs that help improve water quality.
b. They prevent the excessive warming of the planet by sequestering Carbon dioxide.
c. They serve as filters that rid the air of harmful pollutants and toxic gases.
d. None of the above.
Answer:
1. Lowering Biodiversity of the plant
2. I think it is B
3. Habitat Destruction
5. None of the Above
Explanation:
Answer:
1. d
2.c
3.a
4.a
5.d
Explanation:
1. Forests ecosystem have high biodiversity
3.Habitat loss from exploitation of resources, agricultural conversion, and urbanization is the largest factor contributing to the loss of biodiversity. The consequent fragmentation of habitat results in small isolated patches of land that cannot maintain populations of species into the future.
4.It is currently the biggest cause of current extinctions. Deforestation has killed off more species than we can count.
5. Im not sure.
It may be ans c. As Trees absorb toxic chemicals through their stomata, or 'pores', effectively filtering chemicals from the air.
The optic nerves pass through the ----- of the ------- bone.
Answer:
sphenoid bone
Explanation:
Extracranial. The optic nerve is formed by the convergence of axons from the retinal ganglion cells. These cells in turn receive impulses from the photoreceptors of the eye (the rods and cones). After its formation, the nerve leaves the bony orbit via the optic canal, a passageway through the sphenoid bone.
describe the human population growth curve over the past 10,000 years, and identify the type of population growth curve it represents
p.s I will give brainless
Explanation:
Global human population growth is around 75 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7 billion in 2012.
Although the direst consequences of human population growth have not yet been realized, exponential growth cannot continue indefinitely.
In the late 1970s, China’s “one-child” policy tried to control population growth, but restrictions were relaxed in the early 2000s.
WHAT IS BREEDING DEFINATION
Answer:
Breeding is sexual reproduction that produces offspring, usually animals or plants.
Explanation:
make me as brainleast.
Em algumas células encontramos organelas denominadas cloroplastos, que são responsáveis pelo processo de fotossíntese. Essas organelas são encontradas em:
A) células bacterianas
B) células vegetais
C) células procariotas
D) células animais
Answer:B celulas vegetais
Explanation:
Os cloroplastos são organelas que ocorrem apenas nas células de vegetais e algas e são ricas em clorofila, um pigmento de coloração verde. Elas estão relacionadas com o processo de fotossíntese e, nas plantas, são encontradas principalmente nas folhas.
A) Group 2 elements have two valence electrons. Which kind of bond will they most likely form, and why? (1 point)
A covalent bond is likely because they want to share those two valence electrons in order to become stable.
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
A metallic bond is likely because they are metals and can bond with other metals.
An ionic bond is likely because they are metals and will want to bond with nonmetals
Answer:
B. An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
Explanation:
Answer:
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
Explanation:
How is WHAM related to Nucleic Acids?
Answer:
Nucleic acid is an important class of macromolecules found in all cells and viruses. ... Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
Explanation:
2. Seema suffered a severe muscle tear while playing. Which food nutrient would help her recover faster
Answer:
Protein.
Hope it helps you.....URGENTTT!!
how insulin taken by breathing it in enters the blood?
Answer:
well when you breathe in the insulin it travels to your lung and is absorbed by the alveoli where it is dissolved and is transffered to the capillaries
Explanation:
what statements are true about the biological macromolecules?
A. All biomolecules could be called carbon - based molecules
B. The monomers of DNA are nucleotides
C. Ready cellular energy comes in the form of lipids
D. Carbohydrates contain nitrogen and therefore differ from other macromolecules
E. Cell membranes are made, in part, from phospholipids
F. The monomers of starch are monosaccharides
Answers:
A. All biomolecules could be called carbon based molecules
B. The monomers of DNA are nucleotides
E. Cells membranes are made, in part, from phospholipids
F. The monomers if starch are monosaccharides
All biological macromolecules are carbon-based molecules, the monomers of DNA are nucleotides, cell membranes, in part, are made from phospholipids and the monomers of starch are monosaccharides correct statements. Therefore, the correct options are A, B, E and F.
What are biological macromolecules?Biological macromolecules are large molecules constituted of organic molecules. These are necessary for the survival of an organism. The four major classes of macromolecules in the study are Carbohydrates, Lipids, Proteins and Nucleic acids.
They are all built from carbon-based or organic molecules. These molecules form important components of a living cell and constitute most of its dry weight. These macromolecules are mostly obtained from the food we eat which is broken down into nutrients which are these organic molecules.
They are also called biomolecules. Carbohydrates are energy sources made of sugars. They are broken down into glucose which is required for cellular respiration to produce energy.
Proteins perform various functions including structural, regulatory, protective etc. Lipids are non-polar compounds that store energy for the long term in the form of fats in our bodies. Nucleic acids are hereditary biomolecules that pass on traits from one generation to another.
Therefore, the correct options are A, B, E and F.
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Your hand pop up after touching a hot stovetop. Which two organs systems are most responsible for your reaction?
A. nervous and respiratory
B. immune and muscular
C. nervous and muscular
D. circulatory and muscular
Answer:
nervous and muscular
A theory Group of answer choices is always true. may be revised or replaced. is a problem to be solved.
Answer:
may be revised or replaced
Explanation:
theories are an explanation that is based on current knowledge and may be changed after new discoveries
Proteins are one of the four main
types of
biomolecules
O living
O complex
___________ neurons carry signals from sensory nerves to the Central Nervous System.
Choose something about that a scientist may want to learn about a newly discovered species of dinosaurs
Answer:
A scientist might want to know their DNA
Which statement does not apply to the human egg
Cannot move on its own
produced at one at a time
contains enzymes to break down cell walls
contain’s food stores
Answer:
produced at one at a time.
Explanation:
human egg are not produced only at one time.
A steel bar has a mass of 80 kilograms and a density of 8,000 kilograms per cubic meter.
Calculate its volume.
Write your answer to the hundredths place.
Volume = Mass/density = 80/8000= 0.01 M³
which prefix is correctly defined
A. mer- one
B. poly - many
C. mono - large
Answer:
The answer is letter B
Explanation:
Learned about this in class so i know that mono means one and poly means many
Answer:
B. poly - many
Explanation:
Poly means more than one in examples:
polygamy - the practice or custom of having more than one wife or husband at the same time.
polyamine - an organic compound having more than two amino groups
polyaxon - a nerve having several axons
I hope this is helpful :)
In what organelle do the Kreb's cycle and the electron transport chain take place?
(1 point)
0. chloroplast
O mitochondria
O cytoplasm
o nucleus
Answer:
mitochondria
Explanation:
-The aerobic phases of cellular respiration in eukaryotes occur within organelles called mitochondria. These aerobic phases are the Krebs Cycle and the electron transport chain.
The Kreb's cycle and the electron transport chain take place in the MITOCHONDRIA.
Cellular respiration is an aerobic process, i.e., a metabolic process that requires oxygen (O2) by which energy from foods is used to synthesize ATP, carbon dioxide (CO2), and water (H2O). The three stages of cellular respiration are glycolysis, Kreb's cycle (also known as the citric acid cycle), and the electron transport chain.Glycolysis is an anaerobic pathway (i.e., does not require O2) and occurs in the cytoplasm.The Kreb's cycle and the electron transport chain (ETC) are both aerobic processes that occur in the intern membrane of the mitochondria.In conclusion, Kreb's cycle and the electron transport chain occur in the mitochondria.
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Help me plz
What is an everyday problem you could use the scientific method to solve? Include what steps of the method would look like for this problem.
Answer:
observation : a toaster doesn't work
question : is something wrong with the electrical outlet
hypothesis : something is wrong with the outlet my coffee maker also won't work and plug into it
experiment : I plug my coffee maker into the outlet
result : a coffee maker works
2nd result : my toaster is broken
To make a guess based on what you know or think
Explanation:
An inference is an educated guess. We learn about some things by experiencing them first-hand, but we gain other knowledge by inference — the process of inferring things based on what is already known.
During transformation,
a. a prokaryote is changed into a eukaryote.
b. a cell takes in DNA from outside the cell.
c. foreign RNA is inserted into a plasmid.
d. a clone is produced.
Answer:
b. a cell takes in DNA from outside the cell.
A DNA segment is changed from AATTAG to AAATAG. What type of mutation is this and what is its effect on the genetic variation of a population?
A.
The mutation is a substitution which causes a decrease in the genetic variation of a population.
B.
The mutation is an insertion which causes a decrease in the genetic variation of a population.
C.
The mutation is an insertion which causes an increase in the genetic variation of a population.
D.
The mutation is a substitution which causes an increase in genetic variation of a population.
The mutation from AATTAG to AAATAG is a substitution which causes an increase in genetic variation of a population.
MUTATION:
Mutation refers to any change in the nucleotide sequence of DNA molecule. Mutation can be of different types depending on how it occurs. A substitution mutation is that in which one or more nucleotide base is replaced by another in the sequence. In this question, an original sequence of DNA is given as AATTAG. It was mutated to AAATAG via the replacement of 'T' with 'A'. This means that it is a substitution mutation. However, this mutation will cause an increase in the genetic variation i.e. difference in a population.Learn more at: https://brainly.com/question/21220597?referrer=searchResults
