Describe the function of three areas of the brain (you choose which areas).

Answers

Answer 1
Answer:

Answer:

Brain is the main coordination center of the body and regulates the proper functioning of the body. Brain is divided into three parts- forebrain, midbrain and hindbrain.

Cerebrum: Crerebrum is the largest part of brain and controls the language, communication ability, and the process of learning and memory of an organism.

Hypothalamus: Hypothalamus is located at the base of a brain. Hypothalamus releases various hormones, regulates the body temperature and manages the sexual behavior of an organism.

Thalamus: Thalamus is located above the brain stem and relay the neurons into the cerebral cortex. Thalamus regulates alertness, wakefulness and sleep of an organism.


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1.In your own words, describe chromosomes, genes, and DNA.2.Recall that traits are observable characteristics of an individual. Some examples given in this lesson were tongue rolling, earlobe shape, and the presence or absence of a widow’s peak. 3.Explain why individuals in a population have different observable traits. Use your observation skills to find two examples of traits that you have inherited. These traits must be different from the ones that are discussed in the lesson.
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An experiment is designed to study the mechanism of sucrose uptake by plant cells. Cells are immersed in a sucrose solution, and the pH of the solution is monitored. Samples of the cells are taken at intervals and their sucrose concentration measured. The pH is observed to decrease until it reaches a steady, slightly acidic level, and then sucrose uptake begins. (a) Evaluate these results and propose a hypothesis to explain them. (b) Predict what would happen if an inhibitor of ATP regeneration by the cell were added to the beaker once the pH was at a steady level? Explain your thinking.

A researcher is studying gene expression in different types of cells. For a gene of interest, he notes its expression no longer appears to be regulated—it occurs in all cells, rather than in just a few cell types. The gene’s corresponding transcript and protein, however, appear normal. This may be the result of a mutation in which of the following regions associated with the gene? (5 POINTS)Silencer

Intron

Exon

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9What role does the MutL protein play in DNA repair? (5 POINTS)

It performs a proofreading function, similar to DNA polymerase, and removes incorrect bases from the template DNA strand.

It recognizes and binds to a pair of "mismatched" nucleotides, preventing their translation.

It recognizes the newly-synthesized DNA strand (e.g., by detecting nicks), ensuring only it—and not the template strand—is repaired.

It helps to link together regions of DNA, after an error has been removed via exonuclease.

10If a mutation occurs that affects the large subunit of a ribosome, rendering it inactive, how would this affect translation? (5 POINTS)

The small subunit of the ribosome would fail to associate with a mRNA.

Methionine tRNA would not recognize the start codon of a mRNA.

New amino acids would not be added after the initial methionine, so translation would be effectively inhibited.

Arginine tRNA, rather than methionine tRNA, would associate with a mRNA’s stop codon.

Answers

8) The region associated with the gene is : ( A ) Silencer

9) The role played by Mutl protein in DNA repair is : ( C ) It recognizes the newly-synthesized DNA strand (e.g., by detecting nicks), ensuring only it—and not the template strand—is repaired.

10) The effect on translation is : ( C ) New amino acids would not be added after the initial methionine, so translation would be effectively inhibited.

Function of the silencer

The silencer is the region of the DNA that regulates the expression of DNA in RNA and protein, since the mutation cannot regulate the expression of genes the region associated with this is the silencer.

Mutl proteins helps in identifying template DNA strand and newly synthesized DNA strand. they are also used in the treatment of methyl mismatch. also

Translation is inhibited when a large unit of ribosomes is affected by a mutation.

Hence we can conclude that The region associated with the gene is :  Silencer. The role played by Mutl protein in DNA repair is :It recognizes the newly-synthesized DNA strand (e.g., by detecting nicks), ensuring only it—and not the template strand—is repaired.The effect on translation is New amino acids would not be added after the initial methionine, so translation would be effectively inhibited.

Learn more about mutation  : brainly.com/question/17031191

Answer:

8- silencer

9- It recognizes the newly-synthesized DNA strand (e.g., by detecting nicks), ensuring only it—and not the template strand—is repaired

10- New amino acids would not be added after the initial methionine, so translation would be effectively inhibited.

Explanation:

Question 8

As the question is, mutation is unable to regulate gene expression and occurs in all cells. Thus, silencer are the DNA control region and regulate the expression of DNA into RNA and protein. Hence, option a is correct.

Question 9

This protein is used to differentiate between tempelate DNA strand and newerly synthesized DNA strand to rectify the foundation incorporated during DNA replication; it helps to identify new synthesizes of DNA. MutL Proteines are a proteins used to treat a methyl mismatch repair system. Hence, option c is correct.

Question 10

If the large unit of ribosome is affected by a mutation, new amino acid is not introduced after inhibition of the original methionine and translation. Hence, option c is correct.

Chemicals known as ____ and ____ guide neuron migration

Answers

Answer:

immunoglobulins; chemokines

Explanation:

Chemicals known as ____ and ____ guide neuron.

Answer In contrast, neurons in many regions, including the cerebral cortex, cerebellum, hippocampus, and spinal cord, are guided to their final destinations by crawling along a particular type of glial cell, called radial glia, which acts as a cellular guide

What determines the physical and chemical properties of a mineral?

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Answer: Determines the properties of a mineral by the composition and structure .In such as: : colour, taste, tenacity, magnetism, fracture, streak, specific gravity, [ amount of transparency and crystalline structure.

Why does water move through a membrane?

Answers

Answer:

The cells need water to maintain their metabolic functions, the way water enters through cells membranes is by osmosis.

Explanation:

The cell membrane is a lipidic bilayer composed of phospholipids and embedded proteins. Phospholipids have the characteristic of being amphiphilic which means that possess hydrophilic and lipophilic characteristics. The most common way is by osmosis, that is a mechanism that moves water from high concentration to less concentration of water.  In the cell membrane, there are is channels of proteins called aquaporins that facilitate the pass of water through the membrane. Also, as water is a very small molecule without charge, this characteristic allows passing a limit amount of water molecules through the hydrophilic characteristic of membranes.

. In a replicating DNA molecule, the region in which parental strands are separating and new strands are being synthesized is called a(n)

Answers

Answer:

replication fork

Explanation:

The deoxyribonucleic acid (DNA) is a double-stranded helix composed of two long chains of nucleotides. The replication fork is a Y-shaped structure by which both DNA strands are separated in order to be replicated during cell division. In a cell, DNA replication starts at specific sites in the genome referred to as 'origins of replication'. A replication fork is generated by helicase enzymes that unwind and separate the DNA double helix strands by interrupting hydrogen bonds that hold the two DNA strands together. These DNA strands act as templates for the leading and lagging DNA strands. During DNA replication, the leading strand is synthesized continuously in the same direction as the replication fork, while the lagging DNA strand is synthesized in a direction away from the replication fork, in small pieces of DNA called Okazaki fragments.

Which systems does your skeletal system coordinate with to allow you to move? respiratory and nervous respiratory and circulatory muscular and circulatory muscular and nervous?

Answers

Muscular and circulatory

Muscles connect to your skeleton and they contract and move the skeleton along. The calcified bones of your skeleton also work with the circulatory system.