Answer:
Since the cell is dividing it needs two copies of it's DNA. One is kept by the parent cell and the other is passed to the daughter cell..... So this process of duplicating DNA is very important, because the daugher DNA cell will likley die.
Explanation:
Which of the following scenarios can be classified as a negative feedback loop?
a increase in blood pressure to reduce heart rate
b increase in testosterone to help increase a fight-or-flight response
c increase in oxytocin caused by increased contractions
d increase in platelet production to help increase blood clotting
Answer:
The scenario that can be considered an example of a negative feedback loop is increase in platelet production to help increase blood clotting (option d).
Explanation:
Negative feedback loop is what occurs when a change occurs in the body, producing a response that decreases or stops that change, with the intention of maintaining homeostasis.
When there is a wound that produces bleeding, a series of mechanisms are activated, the coagulation cascade, which promotes the release of factors that allow the formation of clots. The increased release of platelets implies negative feedback because it helps to stop the change that occurs in the body, the loss of blood, through the formation of clots.
One thing that can cause confusion is the fact that this response also involves positive, though limited, feedback that promotes the production of clotting factors and platelets to increase clot formation. What really happens is that the positive feedback promotes the general feedback, which is the negative feedback: clot formation to stop the bleeding, restoring homeostasis.
The other options are not correct because:
a. Increase in blood pressure to reduce heart rate is not possible.
b. In the fight and flight response the hormones involved are cortisol and adrenaline, not testosterone.
c. Increased oxytocin in response to uterine contractions is positive feedback.
Brian is a detective who arrives at the crime scene before anyone else. What is TRUE about Brian
Answer:
He is prepared to get on the case early that way the evidence is still fresh
And no one has touched it
Explanation:
Answer:
He is Known as the First Responder to the Scene
Explanation:
he is the first person to arrive
what are things Animal Cells have Only
Answer:
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation:
hope this helps :D pls mark brainliest :D
What is pushing apart North America and Eurasia?
Answer:
The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.
rip for my bio grade :(
Answer:
mRNA
Explanation:
mRNA
Answer:
Awwww sorry I don’t know the answer
Explanation:
helppppp!!!! :) please it’s due at 3
Answer:
q no 19 : option A
Explanation:
please mark me brainliest
how do scientist use index fossils
Answer: Fossils are used to determine the ages of rock layers. Index fossils are of organisms that lived over a wide area.
Answer:
Fossils are used to determine the ages of rock layers. ... Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in. I really hope this helps.
please . help. thank you .
Answer:
The oldest rock layer is letter E and the youngest is letter A
Explanation:
Soil piles on top of each other as time goes on via weather
During photosynthesis, plants produce ___ and oxygen from the ___ of solar energy, water, and carbon dioxide.
Answer:
1. Glucose
2. Conversion
Explanation:
During photosynthesis, plants produce glucose and oxygen from the light of solar energy, water, and carbon dioxide. This process is called photosynthesis.
What is photosynthesis?Photosynthesis is a process that takes place in green plants because they have chlorophyll pigment. Chloroplast is the organelle that is present in green plants. This organelle has chlorophyll pigment that carries out the photosynthesis process.
In photosynthesis, water is taken from the soil, carbon dioxide is taken from the atmosphere, and with the help of sunlight, glucose and oxygen are formed in the chloroplast. Due to this, plants are called producers.
Photosynthesis releases oxygen into the atmosphere, which is required by all living organisms. Organisms take in oxygen and release carbon dioxide into the environment. This is called the respiration process.
In the grassland ecosystem, the plants do photosynthesis. In the ocean's ecosystem, phytoplankton do photosynthesis. Different consumers depend on these producers for food.
Hence, plants produce glucose and oxygen from solar light energy, water, and carbon dioxide.
To learn more about photosynthesis, refer to the following link:
https://brainly.com/question/1388366
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Which Sentence is true about cells?
(A) All cells do the same job
(B) All cells are the same inside.
(C) All Living things are made of cells.
(D) All living things have the same number of cells.
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory.
In a food chain the flow of energy is Always___.
one-way
reversible
two-way or
uncontrolled
A few bacteria are placed in a nutrient solution. After several hours, thousands of bacteria are present. Which life activities are primarily responsible for this? (1) digestion and movement (2) digestion and reproduction (3) circulation and respiration (4) excretion and coordination
Answer:
2
Explanation:
Suppose you lean against a wall. You are pushing on the wall, but is the wall pushing back? How do
you know?
Answer:
yes the wall is pushing back.
Explanation:
This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted.
Answer:
Explanation:
Third law of motion because there's an equal and opposite reaction from you to the wall.
For the following DNA strand,GTACGATATCGG, select the correct m-RNA sequence. need help ASAP pls!.
Explanation:
c a u g c u a u a GCC Carbon credits are used to a, rehabilitate tropical rainforests b. reduce the emission of volatile organic compounds (VOC's) C, regulate how much carbon dioxide a country can emit d. coordinate carbon sequestration activities Please select the best answer from the choices provided
Answer:
C - Regulate how much carbon dioxide a country can emit
Answer:
C
Explanation:
If a DNA strand is composed of 30% adenine (A), how much thymine (T) would be present out of 100%?
Group of answer choices
30%
70%
20%
40%
Answer:
70%
Explanation:
When a cause of death is density _____________________, a certain proportion of a population dies regardless of the population’s density.
Answer:
Independent
Explanation:
A density dependent factor would cause a downfall to the population based on its numbers, like a disease. A density independent factor would affect it regardless of the population size, such as a storm or cold winter.
In these experiments, researchers are taking brain cells from patients with disorders like autism and schizophrenia and using them to grow tissue which produce organoids miniature versions of the body's organs. How might studying these brain organoids help patients with these disorders?
Answer:
It could help in knowing in detail the etiology of the pathology, in order to evaluate the prognosis and its most appropriate treatment.
Explanation:
When cultivating the cells, it is possible to observe if they worsen the pathology before certain means or stimuli, or even the consumption of drugs and derivatives.
Not only with that, the beginning of this pathology is called etiology, when the etiology is studied in detail, the ideal treatment is the one that is determined, since the focus to attack is known so that these pathologies do not advance or even revert .
In what way are the planets mars mercury and earth similar ?
Answer:
Together with Venus, they make up the inner, rocky planets of the Solar System.
Explanation:
What determines the rate of nutrients and waste are exchanged from the cell and the environment?
A. Surface Ratio
B. Milliliters
C. Surface Area to Volume Ratio
D. Volume
Answer:
C.
Explanation:
Volume, no
Milliliters , no
Surface Ratio, come on
The rate of nutrients and waste are exchanged from the cell and the environment depends on surface area to volume ratio.
What is a surface area to volume ratio?The amount of square meters of surface area per unit volume is known as surface area to volume ratio.
What is the relationship between surface area to volume ratio and size of the cell?The surface area to volume ratio becomes smaller as the size of a cell increases.
What is the relationship between surface area to volume ratio and exchange of materials?The exchange takes more time when the surface area to volume ratio is small.
To learn more about cell, surface area to volume ratio and exchange here,
https://brainly.com/question/13530904
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What part of the cell allows the corona vīrus to enter?
Answer:
The cellular membrane
Explanation:
What is a characteristic that helps a living thing survive and
reproduce in a given environment called?
Answer: An adapation
Explanation:
Why are there different sizes of bacterial colonies?
Answer:
colony size reduce means somehow its growth rate was hampered. In your experiment you r use salt but salt has a negative effect on E.coli.It dis regulate the osmotic balance of this bacterial cell after tolerance concentration may be this is the main reason of smaller colony size.
SOMEONE PLEASE HELP T-T
Research and find a current map of the ocean floor. Considering only a small
portion has currently been mapped, what do you think new maps will look
like? What do you think will be found in the future? Explain your answer below.
Answer:
the new maps will have mountain like ridges and ravines. in the future scientists will find new animals and plants as they go deeper into the sea
What's the answer for this? Please answer as soon as possible!!! Thank you❤️❤️❤️
Answer: See explanation
Explanation:
Double circulation is when for every circuit, blood circulates twice through the human heart.
Firstly, deoxygenated blood is sent by the right pump m to the lungs. After it then becomes oxygenated, it will then be taken back to the heart and them the oxygenated blood will then be carried round bmthe body by the left pump.
In the figure, polygon ABCD is transformed to create polygon A'8CD. This transformation is a by a factor of.
sorry ur figure is not opening at all
between the nucleus and the electrons is empty space ?
Answer:
There are protons
Explanation:
What happens during the first two stages of cellular respiration?
Answer:
Cellular respiration uses energy in glucose to make ATP. Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. ... Life first evolved in the absence of oxygen, and glycolysis does not require oxygen.
Explanation:
Got it from Goog|e >.<
what are 3 positive things human do that impact the environment ?
Answer:
Ways in which people positively affect ecosystems around the world include: Recycling. Establishing wildlife preserves and parks. Creating green, open space laws.
Explanation:
:D
PLZ HELP ME!!!!
“The key factor to this process is identifying the trait you want and then only allowing species that have that trait to breed with one another.” Which of the following BEST matches the statement above?
Answer:
Where is the following at?
Explanation:
What are the similarities and differences between the two karyotypes?
Answer:
The typical human karyotypes contain 22 pairs of autosomal chromosomes and one pair of sex chromosomes (allosomes). The most common karyotypes for females contain two X chromosomes and are denoted 46,XX; males usually have both an X and a Y chromosome denoted 46,XY.
Explanation: