Answer:
b hypothalamus
Explanation:
The hypothalamus controls hunger and satiety. Therefore, option (B) is correct.
What is the role of hypothalamus?
The hypothalamus regulates circadian rhythms, appetite, thirst, and body temperature. The study of illnesses and diseases associated to the neuroendocrine system may benefit from using rat hypothalamic neurons.
The arcuate nucleus, or infundibular nucleus in humans, is a region of the hypothalamus that permits peripheral peptides and proteins to cross the blood-brain barrier and interact with its neurons.
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CAN SOMEONE PLEASE HELP ME??
Answer:
D
Explanation:
I don't have time to explain but trust me lol
what does gradiant mean in biology
Answer:
The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse.
Explanation:
Hope it helps! Correct me if I am wrong :>
Im sure about my answer :>
If you dont mind can you please mark me as brainlest?
The red shift of light from most galaxies is evidence that
Answer: This means that the further away the galaxies are, the faster they are moving. ... Red-shift data provides evidence that the Universe, including space itself, is expanding. Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. ... When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.
Explanation: Mark me as brainliest please please please!!!
Photosynthesis takes in the __________ specifically in a green pigment called _________.
Answer:
chloroplast, chlorophyll
Answer:
chloroplast, chlorophyll
Explanation:
Have a great day
Persian cats often have certain diseases and disorders, especially of the eye and nose since their heads have an unusual shape. Persian cats were developed by artificial selection by humans.
Which of the following traits is deliberately selected for when breeding Persian cats?
A.
flat faces
B.
inherited diseases
C.
genetic diversity
D.
all of these
Answer:
the answer is A
Explanation:
It couldn't be D or C because you don't want to give your cat a diseases and so that means it couldn't be D which is all of the above.
do all animals go through metamorphosis during their life cycle
Answer:
These metamorphosis examples are of both insects and amphibians -- the only creatures that go through this process. Amphibians are the only animals with a backbone that can do it.
Answer:
the frog and the ladybug go through a metamorphosis. The ladybug larva looks like a completely different insect from its final adult form. The frog goes through a tadpole stage in which it lives underwater, and then develops into a frog that can live on land.
Explanation:
For the following template
DNA sequence:
3 TÁC AGA - GGT -
TCG - ATC 5'
a) provide the amino acid
sequence
b) provide the anticodons in
order
c) Mutate the above DNA
sequence to introduce a
silent substitution. Write the
mutated DNA sequence
down.
Make sure to clearly
indicate if your answer for
each part by labeling it a) or
b) or c)
Answer:
a) Methionine- Serine- Proline- Serine- STOP.
b) UAC- AGA - GGU -
UCG - AUC
c) AUG- UCG- CCA- AGC- UAG
Explanation:
A) The DNA sequence in this question is given as follows: 3 TÁC -AGA - GGT -
TCG - ATC 5'. This sequence undergoes transcription and translation (gene expression) in order to give rise to an amino acid sequence.
The mRNA sequence that will result following transcription is: AUG- UCU- CCA- AGC- UAG
Following translation, each codon in the above mRNA sequence will result in the following amino acid sequence: Methionine- Serine- Proline- Serine- STOP.
B) Anticodons are a group of three nucleotides that are complementary to a codon found on the tRNA molecule. The anticodons for each codon on the mRNA sequence is: UAC- AGA - GGU -
UCG - AUC
C) Silent mutation is a type of substitution mutation in which one or more nucleotide base is replaced by another in such a way that it does not change or alter the amino acid sequence. Using the mRNA sequence: AUG- UCU- CCA- AGC- UAG
A mutated sequence is as follows: AUG- UCG- CCA- AGC- UAG. Note that, G has replaced U in the second nucleotide. However, there is no change in amino acid that results because the same UCU that codes for SERINE is also encoded by UCG.
PLEASE ANSWER ILL GIVE YOU A COOKIE
how does survival of the fittest (natural selection) lead to evolution? I need to explain it for 11 pts
What evidence supports the claims that the climate is
changing? I
In the cycle shown in the figure above, which processes are shown by letters A and B?
Imagine you are a forensic investigator giving a presentation to a school assembly. A student asks you, “If people have such a similar genetic makeup, then why do you use DNA to understand whether suspects are innocent or guilty of a crime?” Describe how you might answer the students question.
Answer:
While at first, it might look like everyone had similar genetic makeup the human genome is actually incredibly complex we each have an individual set of our own genetic makeup even identical twins have different sets. Another factor is other evidence we have, you can not solely decide if someone is innocent or guilty on a single piece of evidence.
Explanation:
explain the difference between mechanical weathering and chemical weathering.
Answer:
below
Explanation:
Mechanical weathering breaks rocks into smaller pieces without changing their composition. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.
The stain used for staining the muscle slide is
(a) safranin. (b) acetocarmine. (c) iodine. (d) methylene blue.
Answer:
a is used in rare cases mostly for cartilage detection b is used for acid and c is used for starches blue is used to see life and if you're doing like a cotton swab of muscle then this is the answer
Explanation:
How is protein synthesis related to mutations?
PLEASE HELP ME I am so confused. I put a picture of what the question is asking for!
Answer:
D, A, G, C, E, B, F
Hope it helps ❤️
A predator/prey relationship exists between –
F.
A caterpillar and an ant, when the caterpillar feeds on the ant’s eggs.
G.
A cuckoo and a warbler, when the cuckoo lays its eggs in the nest of the warbler.
H.
A honeysuckle flower and a hummingbird, when the honeysuckle attracts the hummingbird with nectar.
J.
A hyena and a vulture, when the hyena eats elephant remains alongside the vulture.
All of the major components of the light reactions, including the pigment molecules
clustered in photosystems I and II, are located in the thylakoid membrane. What is the advantage of
having these components confined to the same membrane rather than dissolved in the stroma or the
cytosol/cytoplasm? Explain your argument. (up to 5 points)
Answer:
Having the light reaction components in close proximity speeds up the process. Electrons move from one protein to the next in sequence. If the proteins had to 'swim' around to find the next part of the electron transport chain, then the ATP would form at a much slower, inefficient rate.
Can someone help please ?
Answer:
I am sorry I don't know sorry
Explanation:
Help ASAP pls
Put the following events of eukaryotic translation in chronological order:
1. Binding of mRNA and ribosome at the mRNA start codon
2. Stop codon releases the ribosome and translation stops
3. Complementary base pairing between initiator codon and anticodon of initiator tRNA
4. Peptide bond formation between amino acids
5. Release of Finished protein product
Answer:
1, 3, 4, 2, 5
Hope it helps!
Proteins translation occurs in the cytosol. It involves the association of mRNA to the ribosome and to tRNA. The codons determine the amino acids sequence. The order is 1, 3, 4, 2, 5.
------------------------------
Protein synthesis involves transcription -which occurs in the nucleus-, and translation -which occurs in the cytosol-.
Once in the cytoplasm mRNA meets a free ribosome, the primary structure for protein synthesis. Ribosomes might be floating freely in the cytoplasm or attached to the rough endoplasmic reticulum.mRNA and ribosomes also associate with different tRNA that carries amino acids.The ribosome recognizes the start codon in the mRNA and starts reading the strain in a 5´ to 3´ direction. According to the codons being readen, tRNA transfers the correct amino acids to build the polypeptide chain.
Each tRNA has two important sites. One of them is the antidocon that couples with the codon of the mRNA molecule. The other site couples with the coded amino acid.
The new amino acid joins the growing chain through peptidic bonds between the carboxyl and amino groups. The tRNA leaves the ribosome and sets free to join another amino acid and repeat the cycle.
The protein is synthesized from the amino terminus to the carboxy terminus, while the added amino acids to the chain are coded by a codon formed by three bases in the mRNA.
When the ribosome meets the stop codon, protein synthesis finishes. The polypeptide is released.
The correct order of steps is
1. Binding of mRNA and ribosome at the mRNA start codon
3. Complementary base pairing between initiator codon and anticodon of initiator tRNA
4. Peptide bond formation between amino acids
2. Stop codon releases the ribosome and translation stops
5. Release of Finished protein product
--------------------------------------
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what is the difference between light microscopes and electron microscopes ?
a point mutations is a change in a single nucleotide in DNA true or false
Answer:
it's true!!!!!!!!!!!! ❤️
it is multiple choice
Answer:
Id say its B or D but dont take my word for it
Explanation:
Answer:
A
Explanation:
I had a 99 in geoscience
I'm giving 15 points plz help
How is Collagen different from Keratin?
Explanation:
keratin is found making up much of the skin, hair and nails if the body. collagen is a protein that is made of fibroblast cells.
What is an example of codominance?
A flower with pink petals that results from the cross
a of a plant with red petals with a plant with white
petals
b Blood type o
c Skin color
A flower with red and white petals that results from
d the cross of a plant with red petals with a plant with
white petals
Answer:
Explanation:
dnanananans
Answer:
It’s D
Explanation:
I jus did it.
1. Which statement is true about renewable natural resources?
Resources that are being used at a rate much faster than the rate at which they are
formed.
Resources exist in a fixed amount and can only be replaced through a process that
takes millions of years.
Resources replaced through natural processes at a rate equal to or faster than they
are being used.
Natural Resources can be depleted or used to the point that they are no longer
available.
Answer: it is b i just did it 5 minutes ago
Explanation: it is b i just did it 5 minutes ago
Which is the BEST example of an organism using behavior to maintain homeostasis?
AO A chameleon's skin becomes green when it sits on a leaf.
B
An alewife turns when other members of its school turn.
C
A snake moves from a sunny area to a shady area to cool down.
D. An elephant uses low-frequency sound waves to find its herd.
C
A snake moves from a sunny area to a shady area to cool down.
Homeostasis is a process to regulate and maintain the temperature and internal body environment. A snake moving from a sunny to a shady region to cool down is behavioral homeostasis. Thus, option C is correct.
What is homeostasis?Homeostasis has been defined as the process that maintains the relative equilibrium temperature of an internal environment so as to regulate physiological processes. They are essential for maintaining optimal functioning.
A snake shows behavioral homeostasis when it moves from a sunny area to a shade region so as to cool its body temperature. The mode of temperature regulation is behavioral homeostasis which regulates the body temperature.
Therefore, option C. the snake moving to a shady area from a sunny area is behavioral homeostasis.
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what happen when blood sugar level is low in human body?
Answer:
it can cause signs of stress, such as nervousness, anxiety, and irritability.
Explanation:
which describes how mRNA is used by a cell?
A it is used to stop toxins from entering the nucleus
B it is used to prevent mutations in DNA
C it is used to transfer info to the ribosome
D it is used to replicate DNA for meiosis
Answer:
C it is used to transfer info to the ribosome
Explanation:
The ribosome is responsible for the production of proteins, so when mRNA enters a cell, the code is sent to the ribosome so that it can begin constructing the proteins.
Explain why an area with extreme temperatures like one in the Arctic would be resistant to invasion by a biotic disturbance.
Answer:
Negative responses protect our body by taking the deviation and making it less harmful to the body. When you cut your finger and lose blood, negative feedback kicks in to slow and stop the flow of blood.
The reason of area having high temperatures should be because of the negative response.
Reason of area with extreme temperatures:Due to the negative response, it protect our body by considering the deviation and it make less harmful to our body.
Also, when you cut the finger and blood comes so there is the negative feedback that kicks for stopping the blood flow.
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In a mangrove swamp, mangrove tree crabs consume the leaves of mangroves and are food for other animals. By eating decaying mangrove leaves, animal wastes, and dead animals, they help create detritus that forms the base of many of the swamp's aquatic food chains. In addition, they burrow in the wet soil, which mixes air containing oxygen with the soil. What is likely to happen to the stability of the community if a disease destroys the population of mangrove tree crabs? (1 point) Think about how a community adjusts when one species is negatively affected.
The stability of the community if a disease destroys the population of mangrove tree crabs will be reduced.
What is a Community?This is referred to as a place where organisms who share certain characteristics live and interact.
The importance of the mangrove tree crabs such as food sources will reduce the stability as other organisms will be affected if its population declines. The community adjusts when one species is negatively affected through exploring different substitutes available.
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