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4 years ago

What is a common magnet made of?

Biology

2 answers:

JulijaS [17]4 years ago

8 0

Iron mostly, but nickel and cobalt can do

sweet-ann [11.9K]4 years ago

5 0

Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic(or ferrimagnetic). These include iron, nickel, cobalt, some alloys of rare-earth metals, and some naturally occurring minerals such as lodestone.

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What body mass index is required to be classified as "obese"?

kupik [55]

•if your BMI is between 25 to 29.9 you are considered overweight.
•if it is 30 and over then you are considered obese.

5 0

3 years ago

Predict the effects of the following types of gene mutations on the protein encoded by that gene (your answer can be just a few

o-na [289]

Answer:

Nonsense mutation: it causes a premature stop codon, so the protein cannot be fully synthesized.

Missense mutation: it causes change on the aminoacid encoded, so it can cause a change in the protein structure if the new aminoacid doesn't have the same chemichal properties as the original.

Synonymous (silent) mutation: it causes no change, the same aminoacid is encoded.

Single nucleotide insertion or deletion: changes the entire structure of the protein because it shifts the reading frame.

Three nucleotide deletion: one aminoacid will no longer be part of the protein, if this aminoacid was located, for example, on the active site of an enzyme, the protein could lose its function.

Chromosomal translocation: it can break a gene in two, causing the protein to no longer be able to be synthesized, or it can change the transcription regulation because it is now under the effect of other regulating sites that result in a different transcription pattern.

4 0

3 years ago

What body systems remove toxins from the body? What are "toxins," and where do they come from? Are all "toxins" alike? Do toxins

Luda [366]

Answer:

Basically, detoxification means cleansing the blood. This is done by removing impurities from the blood in the liver, where toxins are processed for elimination. The body also eliminates toxins through the kidneys, intestines, lungs, lymphatic system, and skin.

Toxins created by the body and even your emotions. These toxins come from industry, car exhausts, air and water pollution, pesticides, herbicides and radiation. They also are found in your hair care products, soaps, make-up, perfumes and cleaning products.

Obesity is a continually growing trend in countries that follow more Western diets and lifestyles, but what if this spike in weight gain can’t be entirely blamed on sugary or fatty foods and a lack of exercise? Turns out toxins contribute to fat storage and make it more difficult to lose those extra pounds too.

Hope it helps!!!!!!!!!!

Brainiest?

6 0

3 years ago

g This final question synthesizes your findings from many of the questions above. For each of the following scenarios… a. direct

hodyreva [135]

Answer:

See explanations

Explanation:

success (how many offspring an organism leaves in the next generation, relative to others in the group).

Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes).

Natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection, or disruptive selection.

Introduction

We've already met a few different mechanisms of evolution. Genetic drift, migration, mutation...the list goes on. All of these mechanisms can make a population evolve, or change in its genetic makeup over generations.

But there's one mechanism of evolution that's a bit more famous than the others, and that's natural selection. What makes natural selection so special? Out of all the mechanisms of evolution, it's the only one that can consistently make populations adapted, or better-suited for their environment, over time.

You may have already seen natural selection as part of Darwin’s theory of evolution. In this article, we will dive deeper – in fact, deeper than Darwin himself could go. We will examine natural selection at the level of population genetics, in terms of allele, genotype, and phenotype frequencies.

Quick review of natural selection

Here is a quick reminder of how a population evolves by natural selection:

Organisms with heritable (genetically determined) features that help them survive and reproduce in a particular environment tend to leave more offspring than their peers.

If this continues over generations, the heritable features that aid survival and reproduction will become more and more common in the population.

The population will not only evolve (change in its genetic makeup and inherited traits), but will evolve in such a way that it becomes adapted, or better-suited, to its environment.

Natural selection can cause microevolution

Natural selection acts on an organism’s phenotype, or observable features. Phenotype is often largely a product of genotype (the alleles, or gene versions, the organism carries). When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution.

7 0

4 years ago

Read 2 more answers

What forms the backbone of the

Fed [463]

It has an alternating chemical phosphate and sugar backbone, making the ‘sides’ of the ladder.

4 0

3 years ago