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3 years ago

What is the difference between plants and animal cells

1 answer:

3 0

Plant cells have chloroplasts. They also have cell walls. They are also rectangular. Animal cells are more round and they do not have chloroplasts or cell walls.Animal cells also have small vacuoles.While plant cells have a one large vacuole.

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What is the pathway of information through a neuron?

garik1379 [7]

Answer:

The pathway of information through the neuron is based in the connection of axons with other neurons, favoring the conduction of information from one place to another of the nervous system. The way in which a neuron communicates with another, with a receptor or an effector is called synapse.

Explanation:

Neurons are the specialized cells that allow the function of the nervous system, given by the transmission of information in the form of nerve impulses. The way in which information is transmitted by neurons depends on the connection that exists between neurons, by their axons and dendrites, or between enurons and specialized structures such as receptors and effectors.

When a stimulus reaches a receptor, it connects with the neuron that carries the information by afferent pathway to the central nervous system. Once the information is processed, a response is elaborated that travels through the neurons by efferent pathway to an effector cell.

Synapses are simply the connection that exists between neurons, through their axons, or from these cells to the receptor or effector structures. Synapses are located between one neuronal axon and another, or between axons and receptors or effectors, and occur through electrical signals or chemical mediators called neurotransmitters.

8 0

3 years ago

What two organelles are included in the endosymbiosis theory?

timofeeve [1]

Chloroplast and mitochondria. Because both organelles are roughly the same size and shape as bacteria, have their own double layer membrane, and mitochondria have dna, that they were engulfed by early cells and are now organelles.

5 0

2 years ago

In guinea pigs hair straightness or curliness is thought to be governed by a single pair of alleles showing incomplete dominance

Nimfa-mama [501]

Answer:

Frequency of allele S is p $= 0.4939$

Frequency of allele C is q $= 0.666$

The population is not in Hardy-Weinberg equilibrium

Explanation:

Given -

Number of individuals with straight hair $= 244$

Number of individuals with curly hair $= 444$

Number of individuals with Wavy hair $= 312$

Let "p" represents the frequency for allele for straight hair and "q" represents the frequency for allele for curly hair

$p^2$ represents the frequency of genotype "SS"

$p^{2} = \frac{244}{1000} \\= 0.244$

$q^2$ represents the frequency of genotype "CC"

$p^{2} = \frac{444}{1000} \\= 0.444$

$2pq$ represents the frequency of genotype "SC"

$2pq = \frac{312}{1000} \\= 0.312$

Frequency of allele S is p

$= \sqrt{0.244} \\= 0.4939$

Frequency of allele C is q

tex]= \sqrt{0.444} \\= 0.666[/tex]

For being in Hardy Weinberg's equation-

$p+q=1\\$

Substituting the values in above equation, we get -

$0.4939+0.666\neq 1$

hence, the population is not in Hardy-Weinberg equilibrium

4 0

3 years ago

pinworms have smooth bodies bilateral symmetry and complete digestive tracts. what type of animal are they

Dvinal [7]

Pinworms are also known as threadworm or seat worm in some countries. Its Scientific Classification:
Kingdom: Animalia
Phylum: Nematoda
Class: Secernentea
Subclass:
There are different types of pinworms in humans and animals. They spread by touching contaminated object they are also parasitic worms.

7 0

3 years ago

Define fitness as it relates to adaptation

irinina [24]

Answer:

Hi there!

Fitness in evolution means the ability to survive to reproductive age, find a mate, and produce offspring.

6 0

3 years ago