1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
san4es73 [151]
3 years ago
5

Why would it be expected that a swordfish would exhibit higher methyl mercury levels than a tilapia? (site 2)

Biology
2 answers:
Georgia [21]3 years ago
7 0

Answer:

Mercury is a fluid metal that is delivered into the earth by both characteristic cycles, for example, volcanic movement, enduring of rocks, and so forth and human exercises, for example, squander materials from processing plants. The mercury that arrives at the sea and other water sources is changed over into methylmercury by microscopic organisms. Methylmercury is a neurotoxin that meddles with the sensory system and is effortlessly consumed by the human body. The methylmercury is taken up by microscopic fishes. Little fishes expend enormous amounts of tiny fish.

kirill [66]3 years ago
3 0

Answer:

Answer is explained below;

Explanation:

Mercury is a liquid metal that is released into the environment by both natural processes such as volcanic activity, weathering of rocks, etc and human activities such as waste materials from factories. The mercury that reaches the ocean and other water sources is converted into methylmercury by bacteria. Methylmercury is a neurotoxin that interferes with the nervous system and is easily absorbed by the human body.

The methylmercury is taken up by planktons. Small fishes consume large quantities of plankton. Tilapia is a small, short-lived freshwater fish. The methylmercury level in tilapia is lower than that of other fish. When large, long-living predatory fishes such as tuna, shark, king mackerel, swordfish, etc consume many smaller fish with low mercury levels, this causes accumulation of methylmercury at extremely high levels in their tissues over time i.e., the amount of mercury in such bigger fish biomagnifies.  

So large, long-lived predators like swordfish and shark often have the highest methyl mercury levels than a small, short-lived tilapia.

You might be interested in
Which type of mutation affects the largest number of genes
SashulF [63]

Answer:

Chromosomal Mutation

Explanation:

The development and function of an organism is in large part controlled by genes. Mutations can lead to changes in the structure of an encoded protein or to a decrease or complete loss in its expression. Because a change in the DNA sequence affects all copies of the encoded protein, mutations can be particularly damaging to a cell or organism. In contrast, any alterations in the sequences of RNA or protein molecules that occur during their synthesis are less serious because many copies of each RNA and protein are synthesized.

Geneticists often distinguish between the genotype and phenotype of an organism. Strictly speaking, the entire set of genes carried by an individual is its genotype, whereas the function and physical appearance of an individual is referred to as its phenotype. However, the two terms commonly are used in a more restricted sense: genotype usually denotes whether an individual carries mutations in a single gene (or a small number of genes), and phenotype denotes the physical and functional consequences of that genotype.

5 0
3 years ago
Read 2 more answers
. For the following give the mRNA, tRNA and amino acid (a.a.) sequence that will be created:
alexdok [17]
<span>mRNA: UACAUGGCCUUACGCUAA tRNA: AUG UAC CGG AAU GCG AUU a.a: Tyrosine, Methionine, Alanine, Leucine, and Arginine DNA has 4 different bases, they are Adenine (A), cytosine (C), guanine (G), and Thymine (T). RNA also has 4 bases with three of them being identical to the DNA bases and Thymine being replaced with Uracil (U). These bases are generally represented by the 1st letter of their names. Each of the bases will join with a complementary base, so A always pairs with T or U, and C will pair with G. So to create the mRNA, simply replace every A with a U, every C with a G, every G with a C, and finally, every T with a A. So mRNA: UACAUGGCCUUACGCUAA Now for tRNA, there's a slight twist. It only comes in 3 base codons, You won't find a sequence of tRNA other than in 3 base codons. And each of those codons will be uniquely paired with an amino acid. In the ribosomes, the mRNA will be sequentially scanned 3 bases at a time allowing for a matching tRNA sequence to bind to the exposed 3 bases, this will cause the next amino acid to be bound into the protein being constructed. So split the mRNA into 3 base sequences and calculate the complement to get the tRNA. A simple shortcut is to look at the original DNA sequence and simply replace a T bases with U. So tRNA: AUG UAC CGG AAU GCG AUU Notice the spaces every 3rd base. THIS IS REQUIRED. These is no continuous length of tRNA. You'll only find it in 3 base lengths and each of them will be bound with an amino acid. For the amino acid that's coded to the RNA, you'll need to use a lookup table in your text book, or one you can find online. Then it's a simple matter of matching each 3 base sequence to the amino acid. For the sequence given we have: AUG - Tyrosine UAC - Methionine CGG - Alanine AAU - Leucine GCG - Arginine AUU - STOP Notice the AUU doesn't decode to a specific amino acid. It instead indicates to the ribosome to stop the production of the protein. So the amino acid sequence for the originally given DNA sequence is: Tyrosine, Methionine, Alanine, Leucine, and Arginine.</span>
8 0
3 years ago
Which island did the grants focus on
andriy [413]
The Galapagos islands. the grants studied finches on these islands to learn more about evolution
7 0
3 years ago
Which scenario describes a way that an abiotic factor can impact a marine system? Liquid water turning into solid ice encourages
Sloan [31]

Answer:

Rapid increases in water temperature cause extensive fish kills

Explanation:

Biotic factors are all living organisms that contribute to an ecosystem. On the other hand, abiotic factors are non-living factors, such as climatic factors (temperature, rainfall, wind), edaphic factors (soil type, soil texture, soil aeration etc). Changes of abiotic factors can have a huge influence on living organisms of ecosystem. The effects might be benefical or harmful.

Some of the most common abiotic factors that can impact a marine ecosystem are water temperature, currents, light, alkalinity, oxygent concentration etc.

4 0
3 years ago
Before classifying insects into different orders, review the larger classifications for insects:
sukhopar [10]

For an organism to be classified in the animal kingdom it is necessary for that organism to be eukaryotic and multicellular. In addition, he must not be able to produce his own food (he must be heterotrophic), and must eat by eating food taken from the environment.

To be classified in the dilo arthropoda, the organism must have an external skeleton, a segmented body and articulated legs.

To be classified in the insect class, the organism must have a separate body in the head, chest and abdomen, have two antennae, two pairs of wings and three pairs of legs.

4 0
3 years ago
Other questions:
  • Hi! Can someone tell me how I'm supposed to learn the million definitions in biology? I mean, it's not difficult to understand,
    13·1 answer
  • Which of the following terms means a group of connected or related objects or materials
    6·1 answer
  • Based on each person's statements, identify which of the following you AGREE with, and then explain your reasoning.
    14·1 answer
  • in figure 34-1 structure F produces which of the following hormones when you're feeling stress about a big test
    12·1 answer
  • Because plant cells contain both mitochondria and chloroplasts, but animal cells only contain mitochondria, it is thought that e
    14·1 answer
  • PLEASE HELP! Biology Unit Test!
    7·1 answer
  • The environmental cue that determines the night of gamete release during a particular month is:
    12·1 answer
  • A child has a mass of 30 Kg on earth. If the gravity on the Moon is one sixth that of the earth what is the mass of the child mo
    9·1 answer
  • With respect to the lobes of the brain, the frontal lobe is involved in ________ and the occipital lobe is the final destination
    9·1 answer
  • If you start with one copy of dna and run pcr for 10 cycles, how many copies will you have at the end?.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!