Answer:
B
Explanation:
This combines with a 4 carbon compound to start the cycle
Kreb's cycle or Tricarboxylic cycle is an enzyme-catalyzed reaction, in which ATP molecules are generated. The starting material for the cycle is pyruvic acid.
The correct answer is:
Option B. Pyruvic acid
Some of the features of Kreb's cycle are:
The starting material of Kreb's cycle is pyruvic acid. The pyruvate is obtained from the glycolysis of glucose molecules.The pyruvic acid breaks into a two-carbon molecule and joined with the enzyme Co A, to form a two-carbon molecule Acetyl Coenzyme A.The Krebs cycle is a series of dehydration, reduction, oxidation, and hydration reactions.The product of Kreb's cycle is two carbon dioxide molecules, one GTP, and reduced NADH and FADH2.
Thus, the starting material for the Kreb's cycle is pyruvic acid, which is converted into the acetyl Coenzyme A before entering the Kreb's cycle.
To know more about Krebs cycle, reefer to the following link:
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Which model is to scale? *
2 points
A
B
Model A
Model B.
Both models are to scale
Answer:
I thibk it might be a or b bc those oare the only answers to pick from LOL
Which statement correctly describes why a compound is a pure substance?
A compound is not a pure substance because each of its molecules is made up of the atoms of two or more different elements.
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
A compound is not a pure substance because it is not an element, and only elements are pure substances.
A compound is a pure substance because it consists of two different elements, which are pure substances.
Answer: b. A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
Answer:
b
Explanation:
can i get help on these 2 questions ? thank you !
BIOLOGY
The wing of a bat and the wing of a bee or other insect are examples of what type of structures?
a. analogous structures
b. homologous structures
c. vestigial structures
d. unrelated structures
Answer:
a similar function diff phylum
Anyone ??? this is a timed test
Answer:
Are the genetically modified plants potentially harmful to humans due to exposure to heavy chemical sprays?
Explanation:
Proceed though meiosis to anaphase 1 . Which chromosomes went up and which went down?
Up : Down :
Answer:
The upper chromosomes went up and lower chromosomes went down.
Explanation:
Anaphase 1 of meiosis, the chromosomes that are present at the upper side went up and move towards the pole while on the other hand, the chromosomes which are located at the lower side went down moves toward another pole. Both chromosomes remain attached to one another in anaphase 1 while in telophase I, the chromosomes arrive at opposite poles of the cell.
how do the reactant molecules become the molecules found in the products... what happens to them
Explanation:
Molecules of reactants and products undergoes chemical changes when they combine.
The combination leads to the breaking of bonds and rearrangement and this brings about the formation of new products.
Atoms in molecules tends towards stabilityThey often want to mimic the noble gases and would keep rearranging until stability is attained. This leads to the formation of new compounds in the product end of the reaction.In order for protein synthesis to occur, both transcription and translation must occur. Which of the following statements describes the difference between transcription and translation?
In transcription, the genetic code of a DNA molecule is encoded. Translation is the process of converting the DNA code into a code that RNA can use.
In transcription, an amino acid chain is encoded in a DNA molecule. Translation is the process of turning the amino acids into nucleic acids in an RNA molecule.
In transcription, a double helix DNA molecule is split into two separate single strands. Translation is the process of joining each single DNA strand with a single strand of matching RNA.
In transcription, the genetic code of a DNA molecule is transferred to a messenger RNA molecule. Translation is the process of creating an amino acid chain using the encoded messenger RNA.
Answer:
1
Explanation:
In transcription, the genetic code of a DNA molecule is transferred to a messenger RNA molecule. The translation is the process of creating an amino acid chain by using the encoded messenger RNA. So the correct option is D.
What are transcription and translation?The first step in the process of gene expression is called transcription. In this process, the DNA sequence of a gene is copied for the formation of an RNA molecule.
RNA polymerase enzymes link the nucleotides of DNA to form an RNA strand. The DNA strand is the template. For every gene in the genome, transcription is separately controlled.
The translation is the process by which an mRNA molecule encodes for a protein. The process of translation happens with the help of tRNA in the ribosomes.
Translation requires ATP which is produced by the tRNA. The tRNA in the ribosomes supplies energy to RNA for the transcription of proteins The entry of mRNA occurs by the smaller subunit of RNA and the amino acid chain extends from the larger subunit.
Therefore the correct option is D.
Read more about translation and transcription, here
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Plants grow leaves in order to...
a) help them grow taller.
b) protect the plant from insects.
c) get energy from photosynthesis.
d) help with reproduction.
Answer:
c) get energy from photosynthesisexplanation:Leaves play an important role in the life of the plant, providing the means to collect and store sunlight for photosynthesis.
8.4 waves go by in 6.875 seconds. Calculate the frequency (per 1 second)
Answer:
Hi
Explanation:
Ok
Be Alert to Impersonators. ...
Safely Dispose of Personal Information. ...
Encrypt Your Data. ...
Keep Passwords Private. ...
Don't Overshare on Social Networking Sites. ...
Use Security Software. ...
Avoid Phishing Emails. ...
Be Wise About Wi-Fi.
Answer: Thanks for the tips.
Explanation:
Which equation would be used to calculate height for a African American
female radius?
3.79(radius) + 79.42
4.74(radius) + 54.93
3.67 (radius) + 71.79
3.78 (radius) +74.70
3.32 (radius) + 85,43
Answer:
3.78
Explanation:
because in that the height was changed so that it has a radius number 3.78(radius)74.70
All of the following make up the three major categories of environmental problems except *
loss of biodiversity.
resource depletion.
overpopulation.
pollution.
loss of biodiversity is not among the three major categories of environmental problems.
What are environmental problems?Environmental problems are the results of human activities on the biophysical environment, most frequently negative consequences that lead to the degradation of the ecosystem.
They are negative impacts of human activities on the environment. These include environmental issues including pollution, population growth, waste management, and the greenhouse effect, among others.
To achieve a balance between man and the environment, many environmental protection measures are being implemented at the individual, organizational, and governmental levels. Making use of reusable items instead of disposal ones is one of the solutions to environmental issues.
Learn about environmental issues here https://brainly.com/question/7161493
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If the world’s population keeps on growing, what might some consequences be for planet Earth? Name at least 3.
Answer:
Effect on climate change.
Resource deplition.
Global warming.
Air polution.
Water contamination.
Explanation:
Humans are known for being too lazy to throw their trash in an actual trash can, thus leading to water contamination from people throwing trash in the water. Air polution tends to come from nuclear factories and gas powered cars. Resource deplition, like mass tree cutting for building buildings.
what variables does this graph display? Be specific about each variable
pls I am on a timer tysm
Answer:
from insidee to outside.
What is a sensory system?
In your own words how would you define a prokaryotic cell versus a eukaryotic cell?
Answer:
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
Explanation:
The main difference between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus,while prokaryotic cell do not. On the other hand, prokaryotic have no membrane-bound organelles. Another important difference is the structure of DNA
Help Help Help giving it’s a semester test Based on the pedigree diagram who must be heterozygous for the trait A the child with the trait B both parent C the child without the trait D only one parent
Answer:
Pretty sure its B
Explanation:
Answer:
the child with the trait i just did it on the exam
Help me PLEASE! Choose one answer! First one to answer get Brainliest!
16.)Small, gradual changes in the color or size of a population.
A.) Macroevolution
B.) Embryology
C.) Phylogeny
D.) Microevolution
Answer:
Microevolution
Explanation:
Micro means small so the word microevolution means small evolution
Which are the main categories of the physical science?
A) Medicine, biotechnology, genetics and pharmacology
B) Chemistry, physics, astronomy, and earth science
C) Mathematics, statistics, logic and computer science
D) Biology, paleontology, biochemistry, and zoology
Answer:
b
Explanation:
physical science has to do with inorganic things(non living) or un-biological things
:-) :-) :-) :-) :-) :-) :-) :-) :-)
Answer: irregular,inconsistent, unsteady, uneven, shaky, fitful, patchy, variable, varying, changeable, changing, ever-changing, on-and-off, off-and-on, inconstant, erratic, haphazard, unstable, unsettled, spasmodic, sporadic, episodic, intermittent, occasional, unpunctual, wavering, fluctuating, aperiodic, unsystematic, unmethodical, ...
PLEASE HURRYY
9. Mendel’s research led to several conclusions about how traits are passed through generations. Choose TWO of the conclusions from the bullet list below and provide evidence from THIS activity that supports this conclusion. (6 points)
Different forms of a gene account for variations in the inherited traits
An organism inherits two genes for each trait, one from each parent.
Some alleles are dominant over others for a given trait.
The two genes of a given trait segregate during gamete production.
#1)
Which conclusion from the list above did you pick? _________________________________________________
How does it apply to the monsters activity?
#2)
Which conclusion from the list above did you pick? _________________________________________________
Answer:
NOT:for an organism inherits two genes one from each parent
the reason is because each parent give 23 genes meaning that The second choice is out of the ring basically what I am saying is the answers are:
• Some alleles are dominant over others for a given trait.
The two genes of a given trait segregate during gamete production.
Cells have lots of membranes, which gives them a high amount of?
Answer:The plasma membrane
Both prokaryotic and eukaryotic cells have a plasma membrane, a double layer of lipids that separates the cell interior from the outside environment. This double layer consists largely of specialized lipids called phospholipids.
A phospholipid is made up of a hydrophilic, water-loving, phosphate head, along with two hydrophobic, water-fearing, fatty acid tails. Phospholipids spontaneously arrange themselves in a double-layered structure with their hydrophobic tails pointing inward and their hydrophilic heads facing outward. This energetically favorable two-layer structure, called a phospholipid bilayer, is found in many biological membranes. [Close-up of a phospholipid]
As shown below, proteins are also an important component of the plasma membrane. Some of them pass all the way through the membrane, serving as channels or signal receptors, while others are just attached at the edge. Different types of lipids, such as cholesterol, may also be found in the cell membrane and affect its fluidity.
An image of plasma membrane shows the phospholipid bilayer, embedded proteins, and cholesterol molecules. The membrane separates the extracellular space, outside of the cell, from the cytosol inside the cell.
An image of plasma membrane shows the phospholipid bilayer, embedded proteins, and cholesterol molecules. The membrane separates the extracellular space, outside of the cell, from the cytosol inside the cell.
Image credit: modified from OpenStax Biology
The plasma membrane is the border between the interior and exterior of a cell. As such, it controls passage of various molecules—including sugars, amino acids, ions, and water—into and out of the cell. How easily these molecules can cross the membrane depends on their size and polarity. Some small, nonpolar molecules, such as oxygen, can pass directly through the phospholipid portion of the membrane. Larger and more polar, hydrophilic, molecules, such as amino acids, must instead cross the membrane by way of protein channels, a process that is often regulated by the cell. You can learn more about cellular transport in the membranes and transport section.
The surface area of the plasma membrane limits the exchange of materials between a cell and its environment. Some cells are specialized in the exchange of wastes or nutrients and have modifications to increase the area of the plasma membrane. For instance, the membranes of some nutrient-absorbing cells are folded into fingerlike projections called microvilli, singular, microvillus. Cells with microvilli cover the inside surface of the small intestine, the organ that absorbs nutrients from digested food. The microvilli help intestinal cells maximize their absorption of nutrients from food by increasing plasma membrane surface area. [Microvilli and celiac disease]
Diagram and micrograph of intestinal cells, showing the protruding "fingers" of plasma membrane—called microvilli—that contact the fluid inside the small intestine.
Diagram and micrograph of intestinal cells, showing the protruding "fingers" of plasma membrane—called microvilli—that contact the fluid inside the small intestine.
Image credit: OpenStax Biology. Micrograph is a modification of work by Louisa Howard.
The cytoplasm
The part of the cell referred to as cytoplasm is slightly different in eukaryotes and prokaryotes. In eukaryotic cells, which have a nucleus, the cytoplasm is everything between the plasma membrane and the nuclear envelope. In prokaryotes, which lack a nucleus, cytoplasm simply means everything found inside the plasma membrane.
One major component of the cytoplasm in both prokaryotes and eukaryotes is the gel-like cytosol, a water-based solution that contains ions, small molecules, and macromolecules. In eukaryotes, the cytoplasm also includes membrane-bound organelles, which are suspended in the cytosol. The cytoskeleton, a network of fibers that supports the cell and gives it shape, is also part of the cytoplasm and helps to organize cellular components.
Even though the cytosol is mostly water, it has a semi-solid, Jello-like consistency because of the many proteins suspended in it. The cytosol contains a rich broth of macromolecules and smaller organic molecules, including glucose and other simple sugars, polysaccharides, amino acids, nucleic acids, and fatty acids. Ions of sodium, potassium, calcium, and other elements are also found in the cytosol. Many metabolic reactions, including protein synthesis, take place in this part of the cell.
Explanation:
carbohydrates
carbon dioxide
usable chemical energy
water
dah
Geocod
drag and drop and her
g and died
OXYGEN
Answer:
what is the question you are asking
Explanation:
Answer:
Carbohydrates-fruits and wheat bread
Water-Rain drop
Carbon dioxide-cloud
ATP-usable chemical energy
Explanation: I take biology class and I’m doing a this for a test now,
Discuss the challenges trying to do work in the field and how unanticipated problems occur in science and methods may need to be changed. For example, how did the crew change their method for getting close to the sharks? Why did they have to change their approach?
plz answer thissss
Also, my real name is Savannah ^w^
Answer: Correct approach is required to be taken for conducting the research.
Explanation:
The scientific methodology involves the observation, experimentation, deduction of the conclusion. Moreover, similar studies in the same field also add up to the literature and change in the methodology for a particular discipline of study to understand the scientific phenomena better. The unanticipated problems may include the physical, psychological, and economic harm to the subjects.
But according to the given situation the crew might have not taken protection while conducting research in the shark surrounding. Shark is a carnivore and can cause massive harm to the navigators so precautions are required to be taken to protect themselves and conduct research.
Name a BEHAVIORAL adaptation.
PLSS I NEED THIS ASAP!! I WILL GIVE YOU BRAINLYEST!!
Answer:
predators become more abundant in a habitat then the prey becomes more aggressive towards the predator and others
Explanation:
Answer:
Birds fly south in the winter.
Explanation:
That need more food and it will
be to cold so therefore the birds need to survive by flying south.
Which is the best description of Earth’s sun?
1. The sun is an average size star in terms of size, temperature, and age.,
2. The sun is the glowing remains of an older, dying star.
3. The sun is a collection of stars held together by gravity.
4. The sun is a red giant that will soon become a black dwarf star.
Answer:
The answer's three
Explanation:
What is the difference between open and closed populations?
Answer:
Open populations occur when the total population is dynamic, with new members leaving and being added over time. ... Closed populations occur when the members of population are fixed and no new members are added or lost from the group (except through birth and death
Explanation:
hope this helps also dont fprget to thank me
Gametes have _________________the # of chromosomes. (n=haploid)
half
the cells resulted from meiosis (gametes) are haploid because they contain half the number of chromosomes found in somatic cells
