Some prokaryotes are able to survive unfavorable conditions by forming?A. flagella
B. capsids
C. cocci
D. endospores

Answers

Answer 1

Answer: I think the correct answer from the choices listed is option D. Some prokaryotes are able to survive unfavorable conditions by forming endospores. The formation of such is promoted by a lack of nutrients and it oftentimes happen to Gram-positive bacteria.

Further Explanation

Proteins

Proteins are one of the major biomolecules that exists in nature.
They are made of amino acids which are the building blocks. Amino acids contain four different elements which include;

Hydrogen
Oxygen
Nitrogen
Carbon
Some amino acid contains sulfur element.

Nucleic acids

Nucleic acids are one of the four major bio-molecules in nature. Nuclei acids is divided into two; RNA and DNA.
The building blocks of nucleic acids are Nucleotide bases which are made by a nitrogenous base, a sugar and a phosphate group.

DNA

DNA is a nuclei acid that is responsible for carrying genetic information in living organisms.
It is through DNA that genetic information is passed from one organism to another through the process of DNA replication.
Additionally, it carries the information that is used to make proteins which performs various functions in living cells.
Each Nucleotide in DNA contains a nitrogenous base, a deoxyribose sugar, and a phosphate group.
DNA molecules are made up of nitrogenous bases; Adenine, Guanine, Cytosine and Thymine.

RNA

Ribonucleic acid (RNA) is a type of nucleic acid, a molecule that plays a major role in the flow of information from the DNA to the proteins. For a gene to be expressed information has to be passed through the RNA.
Each nucleotide in RNA contains a nitrogenous base, a ribose sugar, and a phosphate group.
Nitrogenous bases in RNA includes; Adenine, Guanine, Cytosine and uracil. Thymine in DNA is replaced with Uracil.

Keywords: DNA, RNA, Nitrogenous bases

Learn more about:

Nucleic acid: brainly.com/question/2416343
RNA structure: brainly.com/question/2416343
DNA structure: brainly.com/question/2416343

Level: High school

Subject; Biology

Topic; Nucleic acids

Sub-topic: RNA and DNA structure

The element is found in nucleic acids but not in proteins are the Phosphorous.

Nucleic acids are polynucleotides, which are long chainlike polymers made up of essentially identical nucleotide building components. Each nucleotide is made up of a nitrogen-containing aromatic base that is linked to a pentose (five-carbon) sugar, which is then linked to a phosphate group.

Proteins are composed of hundreds or thousands of smaller units known as amino acids that are linked together in lengthy chains. A protein is made up of 20 different types of amino acids that can be mixed. The sequence of amino acids determines each protein's distinct three-dimensional structure and function.

Thus, Phosphorous is the element which is found in nucleic acid but not in proteins.

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A scientist is using a computer model to predict changes to a population of rabbits in a meadow. Identify the information about the rabbit population that should be included in the computer model.

Answers

Answer:

In the mentioned case, the intrinsic and environmental factors influencing the size of the population should also be included in the computer model. The population size is primarily predicted by environmental and intrinsic factors.

The size of the population of any species is monitored by the factors like birth rate, death rate, limiting factors, and their accessibility, carrying capacity of the system, rate of migration, and others. All these elements should be taken into consideration in order to determine the changes observed in the population of rabbits in a meadow.

Amino acids are coded for by triplet bases in RNA called _____

Answers

Amino acids are coded for by triplet bases in RNA called _Codon_.

These codons are a sequence of three nucleotide that forms a unit genomic information encoding for a particular amino acids.
There are 64 different codons:-

- 61 specify amino acids

- 3 are used as stop signals

What is a codon?

A codon is a DNA or RNA sequence of three nucleotides that forms a unit of genomic information encoding a particular amino acid or signaling the termination of protein synthesis.

The nucleotides base pair that form codon are:

- Adenine

- Guanine

- Uracil

- Cytosine

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1. Three nucleotides encode an amino acid. Proteins are built from a basic set of 20 amino acids, but there are only four bases. Simple calculations show that a minimum of three bases is required to encode at least 20 amino acids. Genetic experiments showed that an amino acid is in fact encoded by a group of three bases, or codon.

2. The code is nonoverlapping. Consider a base sequence ABCDEF. In an overlapping code, ABC specifies the first amino acid, BCD the next, CDE the next, and so on. In a nonoverlapping code, ABC designates the first amino acid, DEF the second, and so forth. Genetics experiments again established the code to be nonoverlapping.

3. The code has no punctuation. In principle, one base (denoted as Q) might serve as a “comma” between groups of three bases.

This is not the case. Rather, the sequence of bases is read sequentially from a fixed starting point, without punctuation.

4. The genetic code is degenerate. Some amino acids are encoded by more than one codon, inasmuch as there are 64 possible base triplets and only 20 amino acids. In fact, 61 of the 64 possible triplets specify particular amino acids and 3 triplets (called stop codons) designate the termination of translation. Thus, for most amino acids, there is more than one code word.

If a scientist wanted to compare the exact number of organisms at each trophic level within a desert ecosystem, which pyramid would he or she use?

Answers

If a scientist wanted to compare the exact number of organisms at each trophic level within a desert ecosystem, the pyramid he or she would use would be the pyramid of numbers. The pyramid of numbers presents the population of organisms (individually) in each trophic level in a certain ecosystem.

What part of the paramecium functions as the food entry?a. oral grove
b. eye spot
c. pseudopods
d. food vacuole

Answers

Food enters through the oral groove.

Peter Rodman proposed that human evolution was linked to ________ while Owen Lovejoy suggested the best explanation was ________. a. the ability to carry food in order to provision family members; increased efficiency in walking as forests transformed to wooded environments b. the increased efficiency in walking as forests transformed to wooded environments; the ability to carry food in order to provision family members c. the ability to make and use stone tools; the loss of the diastema and evolution of thick enamel d. the early emergence of a large brain; the later emergence of a large brain

Answers

Answer:

b. increased efficiency in walking as forests transformed to wooded environments; the ability to carry food in order to provision family members.

Explanation:

Peter Rodman and his colleague proposed a 'patchy forest hypothesis' according to which forests become more patchy and the food in them is in dispersed form so, the hominids their can move efficiently with energy and can carry food now with free hands.

While Owen Lovejoy suggested that monogamous males, provision their females and protect them from predators, females that are provided with foods, could now take care of more than one offspring at a time, and thus reduce the gap between births.

Final answer:

Rodman proposed that human evolution was driven by efficiencies in walking due to environmental changes while Lovejoy suggested it was due to the ability to carry food and provision for family members.

Explanation:

Peter Rodman and Owen Lovejoy were anthropologists who each contributed significant theories about the forces that drove human evolution. According to their theories, Peter Rodman proposed that human evolution was linked to the increased efficiency in walking as forests transformed into wooded environments. This transformation would have required our ancestors to travel further for resources, thus selecting for those who could walk more efficiently. On the other hand, Owen Lovejoy suggested the best explanation was the ability to carry food in order to provide for family members. In his view, the capacity to carry food would have promoted pair bonding and increased survival of offspring, propelling human evolution.