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inessss [21]
3 years ago
6

Which of the following is true about a sea stars DNA? A. All of the cells of the sea star have different DNA that allows it to g

row into a complex organism. B As the sea star cells divide, the DNA changes to help create the sea star. C. All of the cells of the sea star have the same exact DNA. D. All types of sea animals have the same DNA, but the animals are different from each other because different parts of the DNA are expressed. ​
Biology
1 answer:
Doss [256]3 years ago
8 0
A resposta é a letra c
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Which of the following statements is true? Choose one: A. Bacterial species use a limited number of nutrient sources. B. All bac
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Answer:

A. Bacterial species use a limited number of nutrient sources.

Explanation:

    There are two classes of nutrients that are indispensable to bacteria: macronutrients (carbon, oxygen, nitrogen, sulfur, phosphorus and hydrogen) and micronutrients (iron, zinc, manganese, calcium, potassium, sodium, copper, chlorine, cobalt, molybdenum, selenium, magnesium, among many others). But it takes more than the nutrients for them to feed, it takes the metabolism, because it is through it that they transform what they have into food.

    The absorption of nutrients to carry out the metabolism only occurs because there are growth factors (environmental) that influence the development of the bacteria. Some examples of these factors are: light, temperature, pH, oxygen and osmotic pressure. Each organism has an optimal growth temperature, or a favorable pH to successfully carry out its metabolism. This will vary from species to species.

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3 years ago
Which best describes this behavior? It is beneficial only to the males that do not fertilize eggs. It is beneficial only to the
sammy [17]

Answer:

d) It is beneficial to the whole species, but not to all of the individual members.

Explanation:

This form of behavior raises the fitness of all the species at the expenses of each member.

Each member of the species performs altruistic behavior towards the queen and her progenies as it assist in creating of her nest to increase their generation numbers. Take for example, The workers do more of nurturing of the queen offspring instead of laying their own eggs. This altruistic behavior of workers promotes the further population of their species at the expense of them producing their own offsprings.

___________________________

Here is the complete question:

Some species of wasps are social. The queen starts a colony from scratch each spring. She builds a small nest, and lays and raises a group of female workers. The workers enlarge the nest while the queen continues to lay eggs. Unfertilized eggs become males that mate with newly hatched females. All of the wasps except the newly fertilized females die by the summer.

Which best describes this behavior?

a)It is beneficial only to the males that do not fertilize eggs.

b)It is beneficial only to the female workers that are not fertilized.

c)It is beneficial to each one of the individual colony members.

d)It is beneficial to the whole species, but not to all of the individual members.

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3 years ago
What are 6 hevy metals that can be taken up by plants
spayn [35]

Answer:

Cd, Cr, Cu, Hg, Pb, and Zn

4 0
2 years ago
What are the mRNA triplets coded for from this gene? A) GGG UUC ACC B) CCC AAG TGG C) GGG TTC ACC D) UUU CCC AGA
vfiekz [6]

Complete question:

A gene on strand of DNA has the following nucleotide sequence: CCCAAGTGG

A) GGG UUC ACC

B) CCC AAG TGG

C) GGG TTC ACC

D) UUU CCC AGA

Explanation:

What are the mRNA triplets coded for from this gene?

A) GGG UUC ACC

RNA codons determine certain amino acids, so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Guanine, Cysteine and Uracil). Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is condensed and tightly wound around histones as chromosomes. Chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand. These are then translated into proteins in ribosomes.

Nucleic acids like DNA stores all of an organism’s genetic information. Nucleic acid molecules comprise the nitrogenous bases Guanine, Adenine, Cytosine and Thymine. Conversely, RNA nucleotides are Adenine, Guanine, Cysteine and Uracil. These pair up as base pairs due to their varied structure- largely influenced by the location of N molecule.

In certain combinations, these bases form codons which act as instructions for protein synthesis. Codons are three nucleotide bases encoding an amino acid or signal at the beginning or end of protein synthesis. Thus, these contribute to the broad diversity of living organisms, as varied combinations of these 64 codons can produce many proteins which can be organized into cells, tissues and organisms.

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

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A hypothesis is based on observations and must be _____.
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3 years ago
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