Answer: C.
Explanation:
The amounts of nickel 59 and cobalt 59 remain the same over a half life period. So, the correct option is (D).
What is Half-life?The half-life of an isotope is described as the period in which half of the amount of the isotope has decayed and half of its original amount is present. Half-life is defined as the time required for a quantity to reduce to half of its initial value.
It is used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms live. This is usually the case to characterize any type of exponential decay.
[tex]t_1_/_2= 0.693/k[/tex]
Where, [tex]t_1_/_2[/tex]= half life of the isotope
k = Decay constant
Nickel-59 has a half-life of 76,000 years, meaning that the time it takes for the isotope's original mass to decrease to half of its original volume is 76,000 years which means that amount of nickel-59 left to be decayed is equal to the amount of nickel-59 decayed into cobalt-59.
Thus, the amounts of nickel 59 and cobalt 59 remain the same over a half life period. So, the correct option is (D).
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HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!plEaSeASaP
Answer:
A.? i'm not 100% sure tho
Explanation:
Which one of the following statements provides the best evidence that prokaryotic cells are less complex than eukaryotic cells?
A. Prokaryotic cells are smaller than eukaryotic cells.
B. Eukaryotic cells carry out unique functions.
C. Prokaryotic cells lack membrane-bound organelles.
D. Eukaryotic cells are found only in complex organisms.
Answer:
The answer is C
Explanation:
The statement that provides the best evidence that prokaryotic cells are less complex than eukaryotic cells is -Prokaryotic cells lack membrane-bound organelles.Therefore, the correct option is C.
What are organelles?The organelles are specialized structures that compartmentalize cellular processes and allow for greater specialization and complexity of cellular function. Prokaryotic cells have a simpler internal structure and rely on the diffusion of substances across their cell membrane to carry out essential processes, such as respiration and protein synthesis.
While the other statements (A, B, and D) are also true to some extent, they do not provide as direct evidence of the difference in complexity between prokaryotic and eukaryotic cells. Therefore, the correct option is C.
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10. Hunger controls are located within the brain's
A) hypothalamus.
B) medulla.
C)temporal lobe.
D)amygdala.
E) hippocampus.
Answer:
a) hypothalamus
Explanation:
Within the hypothalamus are nerve cells that, when activated, produce the sensation of hunger.
The hunger controls are located within the brain's hypothalamus, which plays a crucial role in regulating various bodily functions, including hunger and satiety.
What is the hypothalamusThe hypothalamus is a small region located at the base of the brain. It acts as a link between the nervous system and the endocrine system, helping to regulate various physiological processes and behaviors necessary for maintaining balance in the body.
It controls functions such as temperature regulation, hunger and thirst, sleep and wakefulness, hormone production and release, sexual behavior, emotions, and the autonomic nervous system.
The hypothalamus consists of specialized nuclei that perform specific functions and communicate with other brain regions. By coordinating these functions and releasing hormones, the hypothalamus helps maintain overall homeostasis and ensure the body's proper functioning and survival.
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Are the examples AA, Ab, BB, CC, Cc genotypes or phenotypes?
Genotypes are effectively codes to help sort out the various possible allele pairs of genes. In contrast, a phenotype is a physical trait that can be observed.
What is the locomotary organ of paramecium?
In which type of natural selection is the average trait the least "fit" for the
environment? (Both extremes are more fit than the average)
Answer:
Survival of the fittest
Explanation:
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Please help couldn’t find the answer
Answer:
can you please zoom in a little it's to blurry to read it
GroundWater is nearly impossible to find because... (support with evidence)
Answer:Because groundwater is a very plentiful source of fresh water, it must be a protected resource. In many areas, however, groundwater is not protected. Once an aquifer is contaminated with chemicals or petroleum, it is difficult, if not impossible, to clean up. Therefore, prevention of contamination is paramount.
Explanation:Plz mark me brainlest
Under what conditions will cells most likely stop dividing?
Answer:
Normal cells stop dividing when there is genetic damage or conditions are not favorable. Cancer cells continue to divide even when conditions are not appropriate.
Someone please helppppp
what gender is this duck?
Answer:
Female
Explanation:
Females typically don't have the curly tail at the end and this photo shows there are not any so I'm pretty sure it's a female.
Which of the following factors can limit photosynthesis by being either too high or too low?
a.
Light
c.
Oxygen
b.
Carbon dioxide
d.
Temperature
Please select the best answer from the choices provided
A
B
C
D
please help this is on edge2020
describe the interactions between organisms and the environment.
Answer:
they help it thrive and live because it just goes in a circle sun grows plants plants feed herbivores, herbivores feed omnivores then it eventually gets to the top of the food chain and when the top of the food chain dies it decomposes and gives the ground fertilizer and starts all over again
Explanation:
because it is the circle of life
Define anomaly (don't just copy down what's on the website; define. Google if you have to) I need help, it’s for apes
Answer: something that deviates normal
Explanation: I know because I study anomaly
An anomaly is something different, something that is not normal
Fermentation is a chemical reaction that occurs in the
Choose...
. Because it is
Choose...
, fermentation
Choose...
oxygen. Compared to cellular respiration, lactic acid fermentation generates
Choose...
ATP and is less efficient.
Answer:
Fermentation is a chemical reaction that occurs in the
cytoplasm .
Because it is
aerobic
, fermentation
does not require
oxygen. Compared to cellular respiration, lactic acid fermentation generates
much less
ATP and is less efficient.
Explanation:
Fermentation can be defined as a chemical reaction that typically occurs or takes place in the cytoplasm of both prokaryotic and eukaryotic living cells.
An anaerobic reaction refers to a biological and chemical reaction that doesn't require oxygen such as glycolysis and fermentation.
Hence, because fermentation is anaerobic; it does not require the use of oxygen.Compared to cellular respiration, lactic acid fermentation generates much less adenosine triphosphate (ATP) and is less efficient.During cellular respiration, more high-energy intermediates are generated that can be oxidized to make adenosine triphosphate (ATP) than are generated through lactic acid fermentation.
Generally, lactic acid fermentation is less efficient and it produces much less adenosine triphosphate (ATP) when compared with cellular respiration.
In conclusion, the most appropriate and correct word/phrase to fill in the blanks are:
1. Cytoplasm.
2. Anaerobic.
3. Does not require.
4. Much less.
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3. Has the global human population always increased at the same rate? Explain.
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. Once
a virus gains entry to the body, it invades a host cell in order to -
F deactivate the host cell's defenses
G synthesize antibodies for defense
H metabolize host proteins and grow
J
access cellular processes for replication
Answer:
The answer would be J.
Answer: Access cellular process for replication
Explanation:
Viruses cannot reproduce without a host. They utilize the host's enzymes and other products from cells to replicate rather than grow.
PLEASE HELP!!! Question down belowwwwwww
Answer:
ATP
Explanation:
During aerobic respiration, both consumers and producers synthesize ATP which is the energy rich compound that is further broken down to produce energy.
At aerobic respiration, glucose combines with oxygen gas to produce carbon dioxide, water and an energy rich compound called ATPATP is short for Adenosine Triphosphate. This molecule is the energy bank of body. 38 ATP molecules are produced by aerobic respiration.1. Motivation is defined by psychologists as
an impulse to accomplish something of significance.
B) rigidly patterned behavior characteristic of all people.
C) a need or desire that energizes and directs behavior toward a goal.
D) the cause of behavior.
E) an external reward or goal that pushes a person toward accomplishments.
Answer:
C) a need or desire that energizes and directs behavior toward a goal.
Explanation:
Which of the following pairs are inaccurate?
O chromosomes
nucleic acids
O amino acids — proteins
O lipids – enzymes
O carbohydrate — energy
Answer:
The pairs that are inaccurate are lipids - enzymes (third option)
Explanation:
Enzymes are biological catalysts whose structure is formed by proteins, and for this reason there is no relationship between lipids and enzymes.
The biological function of enzymes is to accelerate biochemical reactions, reducing activation energy. As for the lipids, they are more related to other biological substances, the hormones.
As for the other options:
The chromosomes are formed by nucleic acids, specifically DNA. Amino acids form proteins. Carbohydrates are the main source of energy for living organisms.Which of the following is not a function of the integumentary system? *
A(It forms a barrier to protect your body.
B(Regulates body temperature.
C(Eliminates waste.
D(Movement
Answer:
D(Movement
Explanation:
The integumentary system, which includes the skin, protects the body and regulates temperature/homeostasis. It also eliminates small amounts of waste, but it does not aid in movement directly.
Dog gametes contain 33 chromosomes. What is the genetic content of a dog body cell?
Answer:
If a dog's gametes have 33 chromosomes, the somatic or body cells have a genetic content of 66 chromosomes.
Explanation:
Gametes are the sex cells of sexually-reproducing organisms, with the characteristic of being haploid, that is, their genetic content is reduced by half. Unlike gametes, somatic or body cells contain the complete charge of chromosomes, so they are called diploids.
If the genetic content of a dog's gamete is 33 chromosomes, its body cells must have twice as many, which means 66 chromosomes.
An additional note: a dog really has 78 chromosomes, so its gametes have 39 chromosomes.
CAN SOMONE CHECK IF MY ANSWER IS CORRECT THANKYOU! ILL ALSO MARK U AS BRAINLIEST
Explanation:
The answer is B.
That's : Red blood cells are flat and indented so they can carry the greatest possible amount of oxygen.
The answer you chose is incorrect, because it is the white blood cells which destroys infection.
The clusters of chlorophyll and proteins that absorb sunlight and generate high energy electrons in the chloroplast are called
Answer:
Thylakoids
Explanation:
Thylakoids contain clusters of chlorophyll and proteins known as photosystems. Surrounded by accessory pigments, are essential to the light-dependent reactions. Absorbs sunlight and generate high-energy electrons that are then passes to a series of electron carriers embedded in the thylakoid membrane.
The clusters of chlorophyll and proteins that absorb sunlight and generate high energy electrons in the chloroplast are called photosystem. The correct option is D.
Chloroplasts' thylakoid membrane contains clusters of proteins and chlorophyll known as photosystems. These protein-pigment complexes are essential parts of the photosynthesis' light-dependent processes.
The photosystems' chlorophyll molecules absorb sunlight and use its energy to start a number of electron transfer reactions. The photosystem uses this energy to excite electrons, which are subsequently transported along a chain of electron carriers.
The synthesis of ATP is fueled by these high-energy electrons, which also convert molecules like [tex]NADP^+[/tex] to NADPH, which is necessary for the generation of sugars in the light-independent processes.
The photosystems play a crucial role in converting light energy into chemical energy during photosynthesis. In particular, photosystem II and photosystem I cooperate to efficiently capture and transport solar energy.
Thus, the correct option is D.
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Your question is incomplete, the probable complete question is:
The clusters of chlorophyll and proteins that absorb sunlight and generate high energy electrons in the chloroplast are called
A) Stomata
B) Thylakoids
C) Stroma
D) Photosystems
What would happen in a cell if cellular respiration stopped?
A.) Glucose breakdown would stop
B.) ATP production would increase
C.) Oxygen consumption would increase
D.) Glucose breakdown would increase
Answer:
I think that glucose breakdown would stop or A.)
100 points!!!!!!!!!
To reproduce, female elephants produce eggs and male elephants produce sperm. Offspring are produced by the fusion of an egg with a sperm cell. Which statement is true about the offspring? A. The offspring are genetically distinct from the parents because the egg and sperm are both diploid. B. The offspring are genetically identical to the parents because they are produced by sexual reproduction. C. The offspring are genetically distinct from the parents because they are produced by sexual reproduction. D. The offspring are genetically identical to the parents because the egg and sperm are both diploid.
Answer:
B
Explanation:
C, The offspring are genetically distinct from the parents because they are produced by sexual reproduction.
Sexual reproduction is the fusion between an egg and a sperm cell, and each of these cells has a single set of chromosomes, a haploid. Because of this, their offspring will be a diploid organism with half of its genetic information from their mother and half from their father. The offspring's genetics will be thus unique compared to their parents', because it is a combination of both of their genetic info. If they were to be identical, we would be looking at asexual reproduction, not sexual.
plz help me with these
The controlis the plant with just water. The independent variable is the plants. The dependaent is the amout of salt in the water.
The indepedent is the trees. The dependent is the greenhouse or no greenhouse.
What subject do you think is going to be or is the most important subject to learn in school? What makes this subject so important
Answer:
biology
Explanation:better to understand the cell structure before you test anything
Help me ASAP thank now
Answer:
B is your answer
Explanation:
Answer:
B
Explanation:
Cells from structure E and cells from structure Gare similar in that they
A)
have the same structure and function
B)
contain the same genetic material
C)
are identical in structure, but different in function
D)
contain only the genetic information needed for their specific job
Answer:
C: are identical in structure,but different in function
Cells from structure E and cells from structure G are similar in that they contain only the genetic information needed for their specific job, as in option D, where the genetic information expresses the traits of the cell.
What is the significance of the genetic information?It is very significant, and it is present in most all the living organisms, from the bacteria to the human, and it is crucial for the development, growth, and functioning of an organism and determines the characteristics and traits of the organism. It is inheritable, passed from the parents to the offspring, and allows for evolution and adaptation in the living organism.
Hence, cells from structure E and cells from structure G are similar in that they contain only the genetic information needed for their specific job, as in option D, where the genetic information expresses the traits of the cell.
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