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4 years ago

Ridges of tissue on the surface of the cerebral hemispheres are called ________.

1 answer:

4 0

The undulations on the cerebral cortex (the outer layer of the brain) are called gyri (ridges) and sulci (gorges). Also called the grey matter, the cerebral cortex is the core of brain functioning region with approximately 20 billion neurons.
It is believed that the cerebral cortex is highly folded to accommodate many neurons.

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Ribosomes are the site where translation or transcription takes place in

Ymorist [56]

Answer:

the cytoplasm

Explanation:

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3 years ago

4) Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures

Pani-rosa [81]

Answer:

The answer is A) Homologous structures

Explanation:

Homologous Structures:

Homologous structures are anatomical features in an organism that are structurally and functionally diverse but they originate from a single common ancestor.
Homologous structures possess a similar basic internal structure but can have entirely different morphology and function.
For example, the wings of a bat and a human's arm have the same internal structure but they have different functions.

Vestigial structures are evolutionary remnants that no longer serve a purpose in modern forms or descendants of the original organism.
Inherited and developmental are out of context in terms of evolutionary relationships.

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3 years ago

The pruning goals for fruit trees are to develop strong scaffolds to support the weight of fruits and properly space branches to

anastassius [24]

Do you want to know why I was so trouble some

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4 years ago

There are 3 possible genotypes: NN, MN, or MM. In a group of 500 people, the frequency of genotype NN is 40%. How many individua

Readme [11.4K]

235 are the Individual numbers that would expect to have the MN type of genotype.

There are two equations necessary according to Hardy-Weinberg Equilibrium:-

p + q = 1

p² + 2pq + q² = 1

Let,

NN= p

NM=2pq

MM=q

So, according to the question, the frequency of genotype NN is 40%

40% of 500 = $\frac{500*40}{100} = 200$ Numbers of individuals

Frequency of individuals p = $\frac{Numbers of individuals}{Total populations}$ = $\frac{200}{400} = 0.4$

Find p² by taking the square root of p.

√(p) = √(0.4)

= 0.632

So, pp + qq = 1

qq = 1 - pp = 1 - 0.63

q = 0.37

The allele frequencies in the population are known, now finding the frequency of heterozygous genotype.

By Multiplying 2 × p ×q to get heterozygous genotype

2pq = 2 × 0.63 × 0.37` = 0.47

2pq = 0.47

So, 2pq × total population = 0.47 × 500 = 235, NM genotype.

Learn more about Hardy-Weinberg Equilibrium here,

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4 0

2 years ago

Proper folding of proteins is essential for their biological activity. In general, the functional conformation of a protein is t

romanna [79]

<h2>Protein folding </h2>

Explanation:

Molecular chaperones bind to nascent and folding or misfolded proteins (through improperly exposed hydrophobic regions) and stabilize the polypeptide so it can fold into its native state
They have the ability to prevent non-specific aggregation by binding to non-native proteins
They play an important role in protecting cells from being damaged under environmental stress, such as extreme heat, poisoning, or mental stress
Most common chaperones are heat shock proteins which are also called stress proteins
The intracellular folding environment for proteins is chaotic because of the presence of other biomolecules, folding proteins, improper or fluctuating pH, heat, and other denaturants
Chaperonins provide actual chambers for misfolded proteins to properly refold, segregating the protein from the chaotic cellular environment.
The main key function of chaperonins is to assist in the folding of large protein molecules

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4 years ago