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Lelechka [254]
2 years ago
5

What mineral is most likely used to make an MP3 player? A) talc B) zinc C) quartz D) calcium I'm pretty sure it's either zinc or

quartz but I don't know which
Biology
2 answers:
aliya0001 [1]2 years ago
8 0
MP3 player is a storage device for musics and it can hold as many music as the storage would allow it. Varieties of these device could be made of many different materials such as durable plastics and metals. the most common metal used for this device is zinc. Thus, the answer is B. 
saw5 [17]2 years ago
4 0

The mineral used to make mp3 players is zinc.

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Consider a cross of beetles with exoskeleton alleles B and b and leg size alleles N and n. The maleparent is heterozygous in bot
vichka [17]

Answer:

a. Genotype of male parent= BbNn

Genotype of female parent: bbnn

b: Progeny ratio= 1: 1: 1: 1

c: 1/4

Explanation:

a. Genotype of male parent= BbNn

Genotype of female parent: bbnn

b. Gamete formed by the male parent: BN: Bn: bN: bn in 1:1:1:1 ratio.

Gametes formed by female parent: All gametes with "bn" alleles.

c.  The probability that the offspring will have a genotype of Bbnn=

Bb x bb= 1/2 Bb: 1/2 bb

Nn x nn= 1/2 Nn: 1/2 nn

Therefore, probability that the offspring will have a genotype of Bbnn= 1/2 Bb x 1/2 nn= 1/2.

5 0
2 years ago
The Citric acid cycle occurs in the mitochondria. There are nine biochemical reactions involved in the Citric acid cycle, and th
Sauron [17]

Answer:

. 2C- acetyl Co-A from the link reaction  enters the kreb Cycle to combine with 4 Carbon Oxaloacetate to form 6-  Citrate

The Citrate forms intermediate Isocitrate, which eventually formed  6-C alpha ketoglutarate.

The alpha-ketoglutarate forms the intermediate succinyl-Co A, which later formed  5C-succinate.

5C -Succinate  forms 4C-fumarate, the latter formed 4C-malate- which eventually formed 4C-oxaloacetate.

The 4C of these compounds is fixed, to ensure constant availability of 4C of oxaloacatate for 2C Acetyl -CoA to bind it for the cycle to continuously occur for production of first product Citric Acid  from which other products are  formed from.

Explanation:

5 0
2 years ago
If natural selection has no foresight, how can it explain features that seem to prepare organisms for future events? for example
Nezavi [6.7K]

The genes in a population give forth the genetic variability across a population (genotypes). In addition, occasional mutations of these genes in a population increase this genetic variability. Hovever, natural selection only favours reproduction of individuals with genes that are favourable in the environment/habitat. Therefore, natural selection has no foresight but is rather pegged on being an ‘opportunistic’ process.


4 0
2 years ago
Judy gives a monkey a choice between a sphere and various other three-dimensional shapes. Each time the animal selects the spher
MakcuM [25]

Answer:

concept training

Explanation:

Based on the scenario being described within the question it can be said that Judy is engaging in concept training. In the concept of Psychology, this term refers to when a researcher provides the subject certain objects in order for the subject to learn how to classify each object, by being shown examples and rewarded for making the correct distinction.

8 0
2 years ago
When the _______5___ reaches the end of an axon, the neurotransmitter is released, and it diffuses to the muscle cell membrane t
postnew [5]

Answer:

5- action potential 6- receptors 7- calcium ions 8- sarcolemma

Explanation:

This description illustrates the pathway of a action potential traveling along a neuro-muscular junction. this functions as a chemical synapse between a motor neuron and a muscle fibre. It allow the motor neuron to transmit a signal/action potential to the muscle fiber, causing muscle contraction.

4 0
2 years ago
Read 2 more answers
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