Answer:
Carboxylating pyruvate into oxaloacetate.
Explanation:
Replenishing oxaloacetate is done by carboxylating pyruvate into oxaloacetate through a process that is catalyzed by an enzyme called pyruvate carboxylase. This enzyme speed up the process and the replenishing of oxaloacetate occur quickly and the oxaloacetate is ready to function and participate in different chemical reactions.
Depleted oxaloacetate can be replenished by the carboxylation of pyruvate by the enzyme pyruvate carboxylase.
What is the citric acid cycle?The citric acid cycle is a cycle which is important in aerobic respiration for the production of ATP.
One of the intermediates in the citric acid cycle is oxaloacetate.
Oxaloacetate combines with acetylcoA to form citric acid.
Depleted oxaloacetate can be replenished by the carboxylation of pyruvate by the enzyme pyruvate carboxylase.
Learn more about oxaloacetate at: https://brainly.com/question/8075492
punnett Square st. Patrick's Day worksheet... did anyone have the answers..ughh... so confusing!!
The stage in the mentrual cycle usually lasting from 3to five days when fertilization does not occur.
A.ovulation
B.stimulation
C.menustration
D.reproduction
HELP ILL GIVE BRAINLIEST!! A scientist discovered a new species living in the deep ocean. This organism is prokaryotic, unicellular, has a cell wall, and is a heterotroph. What kingdom does this organism belong to?
Answer:
Kingdom Eubacteria
The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of _______.
a.
hull fouling
b.
the aquarium trade in exotic, nonnative aquatic species
c.
intentional release
d.
an algae farming company
Answer: A
Explanation: Hull Fouling
The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of the aquarium trade in exotic, nonnative aquatic species. The correct option is b.
What is exotic species?Exotic species are those that have been introduced, either intentionally or unintentionally, by humans into an ecosystem where they did not evolve. Such introductions are most likely a natural occurrence.
Endemic species are those that are found only in one region and nowhere else on the planet.
Invasive species have the potential to extirpate native plants and animals, reduce biodiversity, compete with native organisms for limited resources, and alter habitats.
This has the potential to have significant economic consequences as well as fundamental disruptions to the coastal and Great Lakes ecosystems.
Caulerpa, also known as killer algae, was introduced into California as a result of the aquarium trade in exotic, nonnative aquatic species.
Thus, the correct option is b.
For more details regarding exotic species, visit:
https://brainly.com/question/9534926
#SPJ6
A person with a bacterial infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by —
Answer:
making it hard for bacteria to leave the body
Explanation:
A student drew the following model.
Which phase is the best summary of the model
Of the parts of the electromagnetic spectrum listed below, which has the shortest wavelength?
A.
visible light
B.
infrared radiation
C.
radio waves
D.
X-rays
what is the activities of life that occur the cellular level
Answer:
all the digestive activities of life (respiration , digestion, excretion, etc) occur at the cellular level.
Explanation:
-Eijiro <3
state two features of diffusion that do no apply to active transport
Practice Problem #1
DNA
TAC
CGC
TCC
GCC
GTC
GAC
AAT
ACC
ACT
???
mRNA
???
???
???
???
???
???
???
???
???
???
???
???
???
???
???
???
TRNA
???
???
amino
acids
???
???
???
???
???
???
???
???
Answer:
Base Substitutions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease.
Deletions. ...
Insertions.
Ocean currents store energy and help to distribute heat and
Answer:
One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm. The majority of radiation from the sun is absorbed by the ocean, particularly in tropical waters around the equator, where the ocean acts like a massive, heat-retaining solar panel. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds. In fact, almost all rain that falls on land starts off in the ocean. The tropics are particularly rainy because heat absorption, and thus ocean evaporation, is highest in this area.
Major current systems typically flow clockwise in the northern hemisphere and counterclockwise in the southern hemisphere, in circular patterns that often trace the coastlines.
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics.
Explanation:
One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm. The majority of radiation from the sun is absorbed by the ocean, particularly in tropical waters around the equator, where the ocean acts like a massive, heat-retaining solar panel. Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.
The ocean doesn't just store solar radiation; it also helps to distribute heat around the globe. When water molecules are heated, they exchange freely with the air in a process called evaporation. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds. In fact, almost all rain that falls on land starts off in the ocean. The tropics are particularly rainy because heat absorption, and thus ocean evaporation, is highest in this area.
Outside of Earth’s equatorial areas, weather patterns are driven largely by ocean currents. Currents are movements of ocean water in a continuous flow, created largely by surface winds but also partly by temperature and salinity gradients, Earth’s rotation, and tides. Major current systems typically flow clockwise in the northern hemisphere and counterclockwise in the southern hemisphere, in circular patterns that often trace the coastlines.
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth’s surface. Without currents in the ocean, regional temperatures would be more extreme—super hot at the equator and frigid toward the poles—and much less of Earth’s land would be habitable.
The modern cell theory doesn't say
A all living things are multicellular
B cells are the smallest living unit in all organisms
C all cells come from other cells
D all living things are made of cells
Answer:
A
Explanation:
Modern cell theory states: cells are the basic unit of structure and function for all living things, all cells come from preexisting cells, and all living things are made from cells. It does not state that all living things are multicellular, in fact there are plenty of unicellular organisms. Therefore the answer is A.
Which one of the following does not have its outer orbit full?
a. argon
b. neon
c. krypton
d. lithium
Answer:
Lithium
Explanation:
It is group I, not group 0.
Which is an adaptation that helps birds maintain a stable body temperature?
air sacs connected to lungs
large chest muscles
down feathers
nearly hollow bones
Answer:
the answer is down feathers. Or C
Explanation:
I just took the unit review test
Union of haploid and diploid gamete results in a zygote that is
Answer:
Triploid
Explanation:
The process whereby gametes produced by different sexes of the same species of organism come together is called FERTILIZATION. A gamete is said to be HAPLOID (n) if it contains one set of chromosomes while it is DIPLOID (2n) if it contains two sets of chromosomes.
Hence, if an haploid (n) and diploid (2n) gamete unites, a zygote that is TRIPLOID (3n) emerges or forms. A triploid zygote will have three sets of chromosomes i.e. n + 2n = 3n.
HELPPPP!!!
this is science!
HELP!!!!!!!!!
Which kind of molecule provides building blocks for tissues, transports
other molecules, and helps regulate certain reactions in the human body?
A. carbohydrates
B.lipids
C. proteins
D. nucleic acids
Answer:
C : Proteins
Explanation:
(Can I get brainlest?)
Proteins are the molecules that provide building blocks for tissues, transports other molecules, and helps regulate certain reactions in the human body. The correct option is C.
What are proteins?A protein is a found naturally, extremely complex substance composed of amino acid residues linked together by peptide bonds.
Proteins are found in all living life forms and contain a variety of important biological compounds such as enzymes, hormones, and antibodies.
Proteins are massive complex molecules that perform numerous important functions in the body.
They are essential for the structure, function, and regulation of the body's tissues and organs and do the majority of the work in cells.
Proteins are molecules that serve as foundation for tissues, transport other molecules, and aid in the regulation of certain bodily reactions.
Thus, the correct option is C.
For more details regarding proteins, visit:
https://brainly.com/question/17095120
#SPJ2
A scientist is observing a new species of organism. She observes that from generation to generation many of the organisms’ offspring have adaptations that their parents did not have. This organism is most likely reproducing through_______.
a. sexual reproduction
b. budding
c. asexual reproduction
d. binary fission
which of the following does not affect the rate of photosynthesis a) temperature b) light intensity c) soil d ) water intake
Answer:
a) temperature
Explanation:
took test and got right
light intensity does not affect the rate of photosynthesis .
what is photosynthesis ?The process in which plants, algae and certain bacteria use light energy of sunlight, water, carbon dioxide and convert light them into chemical energy and starch. called as photosynthesis.
Photosynthesis occur in special organelles named chloroplast which has its own DNA, genes and hence can synthesize their own proteins.
Chloroplasts have stroma, fluid, and stack of thylakoids known as grana, three types of chlorophyll such as chlorophyll a, chlorophyll b, and carotenoids.
Oxygenic photosynthesis is commonly observed in plants, algae and cyanobacteria where electrons are transferred from water to carbon dioxide by using light energy, to produce energy, oxygen is produced along with carbohydrates.
For more details regarding photosynthesis, visit
brainly.com/question/1388366
#SPJ6
Explain why the cell membrane is the brain of the cell, as opposed to the nucleus.
Answer:
because it holds the information needed to conduct most of the cell's functions.
Cell membrane controls the transport of molecules across the cell and its external environment, Thus, it is called as the brain of the cell.
Why is cell membrane important?Cell membrane regulates most of the cellular activities through the property of selective permeability.
It is responsible for maintaining the cellular equilibrium through influx and efflux of ions and molecules.
There are various receptors present on the cell membrane which regulates the vital biochemical processes taking place in the body.
Cell membrane functions in the cell-cell recognition and cell signalling through various receptors.
Cell membrane is important in regulating body homeostasis. It offers the protective environment to the cell.
Control and regulation of activities is processed through brain.
Therefore, cell membrane is considered as the brain of the cell.
Learn more about cell membrane, here:
https://brainly.com/question/13524386
#SPJ2
What is exine is made up of????
what's wrong in asking these types to Question.. it's based on studies
Answer:
sporopollenin
While the exine is composed of sporopollenin, a complex and highly resistant biopolymer containing fatty acids, phenylpropanoids, phenolics and carotenoids, the intine is largely composed of pectin and cellulose.
Explanation:
I will mark brainiest for correct answer
A pelican has a dip netting beak. How does it eat?
A. It traps fish between its upper and lower mandible much like a scissor,
B. It takes a big gulp of water with fish and filters the water off of the fish before swallowing,
C. It opens holes in trees and eats insects beneath the surface of the wood,
D. It burrows in the mud to find insects and other small invertebrates beneath the surface
Answer:
b is correct
Explanation:
Answer:
b they scoop them and then drain the water a swallow all remaining animals
Why is earth considered an open system and a closed system? (Site 1)
O
Answer:
Open system: has the transfer and exchange of matter and energy in the system's surroundings.
Closed system: has a limit to how much matter is exchanged.
All of Earth's systems are considered open systems, but as a whole, they are closed.
Explanation:
Is hydrogen an atom or molecule
A balance is best used to measure a sample’s _______.
a.
volume
b.
length
c.
mass
d.
size
Prior to Mendel, scientists thought that an offspring _____.
inherited traits from only one parent
blended the traits of both parents
demonstrated traits randomly
exhibited certain traits from each parent
Answer:
blended the traits of both parents
Explanation:
A chemical reaction is shown.
SnO2 + H2 → Sn + H2O
What is true about this chemical reaction?
A.
It is balanced because the mass of the reactants (number of atoms) is equal to the mass of the products (number of atoms).
B.
It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).
C.
It is unbalanced because the mass of the reactants (number of atoms) is less than the mass of the products (number of atoms).
D.
It is balanced because the number of reactants (number of atoms) is equal to the number of products (number of atoms).
Read the information about an experiment.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
B.
The steel wool should be burned over a long period of time (at least two hours).
C.
The steel wool should be burned in a room that is at room temperature (20–25°C).
D.
The steel wool should be burned in its entirety sExpected Outcomes – Metals in Hydrochloric Acid
Metal Observations
Copper No reaction even when gently heated
Iron Little initial reaction.
More vigorous reaction when heated.
Positive test for hydrogen gas.
Solution turned from colorless to yellow.
Magnesium Vigorous initial reaction; rapid evolution of gas.
Positive test for hydrogen gas.
All of the magnesium seemed to disappear.
Solution remained colorless.
Zinc Initial reaction produced rapid evolution of gas; less vigorous than magnesium.
All of the zinc seemed to disappear.
Solution remained colorless.
Students in Ms. Brown's Science Lab demonstrated several chemical reactions, by placing the each above chemicals in HCl (hydrochloric acid). Unfortunately, the data did not appear to support the Law of Conservation of Matter in any of the experiments. The recorded Mass of the Reactants did not match the Mass of the Products. Based on the expected outcomes listed in the table above, what might be a reason that their demonstrations were not successful?
A.
They only used metals
B.
They perfomed the experiment in a closed system
C.
The experiment was not performed in a closed system
D.
They didn't use enough HCl that no iron is left in its original state.
Answer:
1) A chemical reaction is shown.
SnO2 + H2 → Sn + H2O
What is true about this chemical reaction?
B.
It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).
2) Read the information about an experiment.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
Explanation:
The explanation to number 1 is that I selected it in my test and got it.
The explanation the number 2 is from the link below:
https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020
The true statement about the given chemical reaction is-It is balanced because the mass of the reactants (number of atoms) is equal to the mass of the products (number of atoms). Therefore, the correct options for all the problems are 1-A, 2-A and 3-D.
What is a balanced equation?A balanced equation refers to an equation where the number of atoms of each element is the same on both sides of the equation. The given equation is balanced because the number of Sn atoms and the number of H atoms on the reactant side are equal to the number of Sn atoms and the number of H atoms on the product side.
1. The steel wool should be burned inside a sealed jar or other closed system is the most important step if he wants his experiment to correctly demonstrate the conservation of mass.
2. They didn't use enough HCl that no iron is left in its original state might be a reason that their demonstrations were not successful.
Therefore, the correct options are 1-A, 2-A and 3-D.
Learn more about balanced equation, here:
https://brainly.com/question/29764227
#SPJ3
What sphere refers to water and ice?
a. atmosphere
b. hydrosphere
c. lithosphere
d. biosphere
Earth's outermost sphere is called the
a. biosphere.
b. atmosphere.
c. lithosphere.
d. hydrosphere.
What part of Earth contains rocks?
a. Biosphere
b. Hydrosphere
c. Atmosphere
d. Lithosphere
What of Earth's spheres is composed of a mixture of gases?
a. mesosphere
b. hydrosphere
c. atmosphere
d. biosphere
What is Earth's hydrosphere?
a. the gases in the air
b. the solid, rocky part of Earth
c. all of the water on the planet
d. the study of Earth's atmosphere
Plant growth is the result of cells dividing during _____.
plss help
Answer:
Plant growth is the result of cells dividing during mitosis.
Explanation:
Mitosis is the process in which cells divide for cell growth or repair. All the cells, as a result of mitosis will have the same number of chromosomes as of the cell at the start.
Answer:
mitosis
Explanation:
Hope this helps
40 BRAINLEY
FFFFFFFFFFFFFFFFFFF