Answer:
c
Explanation:
If you put an Elodea plant in a test tube containing bromothymol blue and watch the oxygen level, the time of the day in which the oxygen level in the tube would be lowest will be just before sunrise.
First, there is a need to understand oxygen is produced as a result of photosynthesis according to the following equation:
[tex]6CO_2 + 6H_2O ---> C_6H_1_2O_6 + 6O_2[/tex]
The process of photosynthesis takes place in 2 reactions:
Light-dependentLight-independentOxygen is produced from the splitting of water in the light-dependent reaction. Hence, the production of oxygen stops when there is no light - when the sun sets.
Whatever quantity of oxygen that has been produced just before the sun sets would remain and will gradually be used for respiration by the Elodea plant until the sun rises again the following day.
Thus, the level of oxygen in the tube would usually be lowest just before the sun rises and oxygen can be produced again.
More on the light reaction of photosynthesis can be found here: https://brainly.com/question/14015819
In this section write a short paragraph about photosynthesis using the following words in a meaningful way ; Photosynthesis, water, roots, glucose, leaves, sunlight, carbon dioxide, stomata
Answer:
Photosythesis is the process of which plants make oxygen and also gulcose. This process happens when the plants uses their roots to taken in water in the ground and also anchor themselves in the ground. The stomata in the leaves take in carbon dioxide and the sunlight and using theses materials the plants create glucose and oxygen we breath.
What's an invasive species?
A. A native species that begins to displace other local species
B. A species that invades an area because it has run out of space in the neighboring area
C. A species that's naturally expanding its range
D. A species that's introduced to a place where it's not native and then becomes widespread and competes with local species for the available resources
I believe the answer would be D
______ is a disease that results in bowed legs and other bone deformation
Answer: Rickets
Explanation:
Rickets is a bone disease caused by children it says in studies but yes it is rickets
3
What effect of the disappearance of the otters on the diet of the glaucous-winged gulls?
In the model of the cycle of energy above, what is job of the sun?
Answer:
the job of the sun is to give light and energy to plants for photosynthesis which plants turn the light energy to chemical energy then give the chemical energy to animals and then it starts all over again and again.
Explanation:
Which of the following are types of Archaea?
Answer:
Your question was a bit vague... but Crenarchaeota, Euryarchaeota, Korarchaeota, Thaumarchaeota and Nanoarchaeota are the four types of Archaea.
Hope this helps!
Which of the following describes the last step in the life of a Large Star? *
A. small star is formed in the center of the shrinking cloud. The star begins to do fusion.
B. Once the Large star expands into a Super Red Giant, it explodes.
C. black hole forms with so much gravity that not even light can escape it.
D. Cloud of gas and dust that starts to shrink because of Gravity.
Answer:
A. small star is formed in the center of the shrinking cloud. The star begins to do fusion
Explanation:
when placed in the same container, oil and water do not mix because
Oil and water do not mix because mix each other because water is a polar solvent while the molecules of oil are non-polar in nature.
What are the characteristics of water?The characteristics of water are as follows:
It is a universal solvent that is polar in nature. It possesses high heat capacity and heat of vaporization. It has properties like cohesion and adhesion. The solid form of water is less dense as compared to its liquid form.Due to differences in their polarity, the molecules of water and oil are not intermingled with each other. Due to this, the polar compounds are dissolved in a polar solvent while non-polar compounds like oil are dissolved in a non-polar solvent. Thus, the molecules of oil will finally stick to each other and are immiscible with water.
Therefore, oil and water do not mix because mix each other because water is a polar solvent while the molecules of oil are non-polar in nature.
To learn more about Solubility, refer to the link:
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Where does the oxygen needed for aerobic respiration come from?
Which of the following is NOT one of the three cellular structures? Cell (plasma) membrane Cytoplasm Cytokinesis Organelles
Answer:
cytokinesis is your answer
Villi____?
A: are found in the large intestine
B: release bile into the small intestine
C: pass digested food into the blood
D: allow blood to enter the small intestine
Please help me I will try to give branliest, and give more points than usual.
Do not answer if you do not know.
Answer:
B.
Explanation:
release bile into the small intestine
Answer:
D
Explanation:
RELEASE BILE INTO SMALL INTESTINE
IS INVORRECT
Which quantity does a light-vear measure? distance speed time volume
Answer:
speed is the answer
please add me as Brainlist
Why is caffeine used for heart rate experiments
True or false? An ecosystem includes all living things (producers, consumers, decomposers) in an area and their nonliving environment
Answer:
True
Explanation:
Answer:true
Explanation:
ASAP ASAP BEING TIMED!!!!!! Which group of plants lacks true roots, stems, and leaves? Oseedless vascular plants nonvascular plants O nonflowering seed plants Oflovwering plants
Answer:
Nonvascular Plants
Answer:
Nonvascular Plants
Explanation:
hope this helps!:)
The area where an ocean meets land is called the ____ zone.
aphotic
photic
intertidal
benthic
Answer:
the area where ocean meets land is called the intertidal zone
The area where an ocean meets land is called the "intertidal" zone. Therefore, option (C) is correct.
What is intertidal zone?The intertidal zone, also known as the littoral zone, is the area of the shoreline that is exposed to air at low tide and submerged underwater at high tide. This zone is the boundary between the land and sea and is constantly affected by the ebb and flow of the tides. The intertidal zone is characterized by its unique physical and environmental conditions, such as the exposure to air and sunlight, the fluctuations in temperature and salinity, and the constant pounding of waves.
Due to these environmental conditions, the intertidal zone is home to a diverse range of plant and animal species that have adapted to the harsh and dynamic environment, such as barnacles, mussels, crabs, and seaweed. The intertidal zone is an important ecosystem that provides habitat, food, and breeding grounds for many marine species, and is also a popular area for recreation and scientific research.
Learn more about intertidal zone, here:
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What happens when ionic compounds dissolve in water?
a) Cations and anions are released into the solution
b) They split up H2O molecules into H and O
c) They stick to the wall of the beaker
d) They are transformed into non-metals
Taking into account the definition of ionic compound, the correct answer is option a): Cations and anions are released into the solution.
First, you have to know that an ion is an electrically charged particle.
Ionic bondSo, the ionic bond consists of the electrostatic attraction between ions with charges of opposite sign. This type of bond occurs between the chemical combination of a metal and a nonmetal.
Ionic compoundFinally, an ionic compound is made up of positive and negative ions, held together by electrostatic forces of attraction. Atoms of metallic elements tend to lose one or more electrons when combined with non-metallic atoms, and non-metallic atoms tend to gain one or more electrons.
As a result of this transfer of electrons, the metallic atom becomes a positive ion (called a cation) and the non-metallic atom becomes a negative ion (called an anion).
In other words, an ionic compound is a chemical compound made up of two substances with a significant difference in their electronegativities. It is formed preferably between metals and non-metals.
Ionic compounds dissolve in waterSo when ionic compounds dissolve in water, they separate into cations and anions, electrolytic dissociation occurs. This is because water becomes a conductor of electricity.
In summary, the correct answer is option a): Cations and anions are released into the solution.
Learn more:
https://brainly.com/question/21886996?referrer=searchResultshttps://brainly.com/question/20435320?referrer=searchResultshttps://brainly.com/question/9851456?referrer=searchResultshttps://brainly.com/question/7337039?referrer=searchResultsYou conduct a voltage clamp experiment in which you hold the presynaptic terminal of a glutamatergic neuron (a neuron that releases glutamate) at 0 mV. When you treat the terminal with TTX, an inward current is recorded. Which ion and ion channels are responsible for the current you observe? Group of answer choices Calcium; ligand-gated non-specific cation channels Sodium; ligand-gated non-specific cation channels Calcium; voltage-gated calcium channels Sodium; voltage-gated sodium channels Potassium; voltage-gated potassium channels
Answer:
Calcium; voltage-gated calcium channels
Explanation:
Voltage-dependent calcium channels represent a group of voltage-gated ion channels and they are recognized to be primary mediators of calcium entry induced by depolarization. These channels are localized in the membrane of excitable cells such as, for example, neuron cells. The potential difference across the membrane of neuron cells without physiological activity is named resting membrane potential. When there is no action potential, voltage-dependent calcium channels are normally closed.
A population of frogs in a pond began with 67 individuals. Over one year, the population changed to 53.
Which are two possible reasons for the change within the frog population?
emigration or increase in death rate
emigration or increase in birth rate
immigration or decrease in death rate
immigration or increase in birth rate
PLZ HURRYYYY 20 POINTS
Answer:
A. emigration or increase in death rate
Explanation:
i just took the test and got it rigt lol
The two possible reasons for the change within frog population is emigration or increase in the death rate. Thus, the correct option is A.
What factors affect the population?The major factors which affect the population of a species are birth rate, death rate, and migration of the species.
Birth rate is the number of individuals born in a population in a particular time period. Birth rate adds more individuals to a population.
Death rate is the number of individuals die in a population in a particular time period. Death rate decreases the population number.
Immigration is the number of individuals which enter a population.
Emigration is the number of individuals which migrate out of a population.
Therefore, the correct option is A.
Learn more about Population here:
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What cytoskeleton structures are Responsible for moving organelles like chloroplasts around the cell
Answer:
These studies suggest that actin filaments play a major role in the positioning and movement of chloroplasts.
Explanation:
I hope this is the anwser you were looking for or if this even helps
He ar malignt tumors diferent from benign tumors?
Answer:
A tumor is an abnormal lump or growth of cells. When the cells in the tumor are normal, it is benign. Something just went wrong, and they overgrew and produced a lump. When the cells are abnormal and can grow uncontrollably, they are cancerous cells, and the tumor is malignant.
Explanation:
What type of mutation would result (nonsense, missense, silent,
Frame-Shift)
Answer:
Nonsense missense silent
Acid rain is rain that carries unusually high acids that can break down rocks. This is an example of a __________ interaction.
A) atmosphere and geosphere
B) hydrosphere and chronosphere
C) chronosphere and biosphere
D) geosphere and chronosphere
E) hydrosphere and geosphere
Answer:
E
Explanation:
Rain is water=Hydrophere
Rocks=geosphere
2. How do plankton move through the water?
Answer:
It depends.
Explanation:
Some types of plankton float through the water.
While some types have a whip-like tail (flagella) to move through the water.
Answer:
Most plankton are very buoyant and float closer to the surface of the ocean rather than the bottom, but the current also greatly helps the plankton move from place to place
Explanation:
hope this helps :)
Which is FALSE? First exclude the four correct answers. Which is FALSE? First exclude the four correct answers. The leaves are only a small part of the plant and must produce enough energy-rich sugars to support all non-green parts like roots or flowers. Only when overall photosynthetic activity is greater than overall respiration activity of the whole plant can the plant accumulate biomass and grow. Sugar produced in photosynthesis must support the plant’s energy needs both day and night. Leaves perform more photosynthesis than respiration because they don’t have mitochondria. In trees that drop their leaves over the winter, some sugar produced in one year is stored in stems or roots and fuels the production of new leaves in the next year.
Answer:
1 .The leaves are only a small part of the plant and must produce enough energy-rich sugars to support all non-green parts like roots or flowers --TRUE.
2.Only when overall photosynthetic activity is greater than overall respiration activity of the whole plant can the plant accumulate biomass and grow--TRUE.
3.Sugar produced in photosynthesis must support the plant’s energy needs both day and night TRUE.
4. In trees that drop their leaves over the winter, some sugar produced in one year is stored in stems or roots and fuels the production of new leaves in the next year TRUE.
The statement that is FALSE is
Leaves perform more photosynthesis than respiration because they don’t have mitochondria.
Explanation:
The statement that is FALSE is
Leaves perform more photosynthesis than respiration because they don’t have mitochondria and it is false because leaves contain both mitochondria and chloroplast.
The plants leaves have chloroplast, an organelles that house the chlorophyll which help its to photosynthesized. Plants also require ATP to carry out cellular activities and need oxygen to breakdown sugars produced from photosynthesis to produce ATP, because of this, they need mitochondria to achieve this and that is why they have mitochondria.
In the night, when there is no sunlight, plants perform respiration, they use oxygen to break the sugars they produced in order to produce ATP.
What is the job of a cell's selectively permeable membrane?
O A
To control materials entering and leaving the cell
O B.
To regulate energy production in the cell
thing
O C.
To create a second layer of rigid support and protection
O D.
To keep mitochondria from using nuclear material
Answer:
A is the right answer
Explanation:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.
Can I have brainliest
Which of the following is an example of applied research?
A shoe company develops a new material that can better absorb impact for a new running shoe.
A scientist studies the way human cells react to changes in temperature to better understand how
people live in extreme climates.
A teacher leads her students though the dissection of a frog so they can study different organ
systems.
An astronomer is curious about telescope lenses and builds a lens that is a composite of several
different materials.
Answer:
The example is "A scientist studies the way human cells react top changers in temperature to better understand how people live in extreme climates"
How are cells related to organs ?
Which of these best explains the impact of radiation on the geosphere?
Land is heated up by the sun's energy.
Water is heated up by the sun's energy.
Water heats up the air surrounding it.
Land heats up the air surrounding it.
Answer:
I need points
Explanation:
Yeet
The variable that causes a change in another?
Answer:
Dependent Variable
Explanation: The dependent variable is the variable to be explained (the ‘effect”) and the independent variable is the variable expected to account for (the “cause” of) the dependent variable. Like Cause and Effect.
