Answer:
C. The Archaea have no nucleus.
Explanation:
Archaea have no organelles while Eukaryas do, in other words Archaea have DNA that is not in a nucleus.
The organisms in the domain archaea different from those in the domain eukarya is Archaea have no nucleus.
What are the characteristics of Archaea?Archaea is a space of single-celled living beings. Prokaryotes are these microorganisms because they do not have cell nuclei. Initially referred to as archaebacteria, archaea were categorized as bacteria.
By interacting with both bacteria and their hosts, Archaea contribute to the ecosystem's and vegetation's functioning in the harsh bog ecosystem by carrying out functions related to nutrient cycling, stress response, and phytohormone biosynthesis.
The following characteristics of Archaebacteria have been identified as common: the presence of ribosomal and tRNA characteristics; 2) the absence of peptidoglycan cell walls, which are frequently replaced by a coat that is mostly proteinaceous.
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What does the hydrosphere include? fish dust plants rivers
Answer:
La hidrosfera incluye océanos, mares, ríos, lagos, agua subterránea, el hielo y la nieve. ... El agua dulce representa 3 % del total y de esta cantidad aproximadamente 98,2 % está congelada, de ahí que solo se tenga acceso al 0,08 % de toda el agua del planeta
Explanation:
Answer:
the answer is rivers
Explanation:
The hydrosphere is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite. Although Earth's hydrosphere has been around for about 4 billion years, it continues to change in shape. And i got this answer right on the test, hope this helps!
Activation of the parasympathetic branch of the autonomic nervous system:______
a. enhances digestion.
b. causes conversion of glycogen to glucose.
c. triggers release of epinephrine.
d. increases heart rate.
Answer:
A - enhances digestion
The maps below represent the same area of the Amazon rainforest over an 8-year period as humans moved into the rainforest. Forested areas are shown in deep green, and cleared areas are tan (bare ground) or light green (pasture land). Which of the following statements is best supported by evidence from the maps? A. This area became more densely populated with trees between 2000 and 2008. B. Humans living in this area began an extensive forest restoration program between 2000 and 2008. C. Humans began leaving this area to find jobs in nearby cities between 2000 and 2008. D. This area changed appearance between 2000 and 2008 because trees were cleared.
Answer:
D.)
Explanation:
am smart
Answer:
D. This area changed appearance between 2000 and 2008 because trees were cleared
Explanation:
I got it right on study island
what is the key to the recognition of a trait whose expression is determined by the effects of two or more genes
Answer:
Explanation:
Polygenic inheritance occurs when many loci of a gene contributes to it genetic make up.
No particular allele can be selected for contributing to a particular traits all the allele are equally expressed.
Over expressitivity example is pleiotrophy effect have more than 5 fingers or toes
The offspring express more dominant traits that the normal mendelian principle
This signs indicate polygenic inheritance.
Bile is produced by which organ?
Select one:
a. Small intestine
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b. Liver
c. Stomach
d. Gall bladder
Characteristics of Living Things
7. The basic unit of organization of living things is a(n)
A. atom B. organism
C. cell
D. organ
8. Storing energy obtained from food is an example of
A. evolution B. homeostasis
C. response
D. growth
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9. The passing of genes from one generation to another is
A homeostasis
B. response
C. growth D. heredity
10. The main function of reproduction is to
A. have enough male and female to reproduce
B. overpopulate
D. to be able to replace themselves.
C. grow
11. The milkweed plant feeding the caterpillar is an example of
A. interdependency.
C. preparing to die after a long life.
B. reproduction
D. heredity
12. Adaptation is very important to species because it allows them to
A. grow and become successful
C. Die
B. produce offspring better equipped to survive.
D. produce many offspring.
Answer:
bbbc
Explanation:
all of these were to long so
A paleontologist finds a relatively complete skeleton but isn’t sure if it is an ape fossil or a hominid fossil. Which of the following features would NOT help distinguish between the two choices?
a. position of the opening in the skull for the spinal cord
b. design of the pelvis
c. relative length of the hind limbs
d. position of the eyes
Which of the following best describes how crossing over occurs during meiosis?
Answer:
first give the following options bro..
In which of the following ways is DNA replication different from DNA transcription?
Answer:
Thymine is used in replication while uracil is used in transcription.
Explanation:
New cells can only be created after transcription has taken place. Replication results in mRNA strands while transcription creates new DNA. Transcription happens outside the nucleus and replication happens inside the nucleus. Thymine is used in replication while uracil is used in transcription.
DNA replication is a process whereby DNA makes a copy of itself while DNA transcription is a process whereby a messenger RNA is synthesized from a DNA strand.
Both processes involve the building-up of nucleotides or purine.pyrimidine bases. Replication involves building up of cytosine, guanines, adenine, and thymine bases while in transcription, the thymine base is replaced by uracil base.
Hence, the correct answer is that Thymine is used in replication while uracil is used in transcription.
In which of these stages is mitosis most important? A tiger cub is born. A tiger cub learns to walk. A tiger cub begins to grow. A tiger cub play-fights.
Answer:
A tiger cub begins to grow
Explanation:
because that's when they change the most
Answer:
A tiger club play fights
Explanation:
One main part of mitosis is the replacement of cells, so when the tiger gets hurt fighting, mitosis kicks in to replace the cells.
Which of the following pairs of organisms
would have the MOST SIMILAR niche in
their environments.
Zebra and Lion
Squirrel and Chipmunk
Robin and Bald Eagle
Oak Tree and Mushroom
Answer:
Squirrel and Chipmunk
Answer:
C. a lion hunting for a zebra in the grassland
Explanation:
E2023
Which of the following statements is true of soluble fibers? a. They are not viscous. b. They retain their tough texture after being cooked. c. They impart gel-like characteristics to foods. d. They always resist fermentation. e. They are tough and stringy.
Answer:
The answer is "Option C".
Explanation:
The soluble fiber was fiber and in the diet which is prescribed to increase metabolism, reduce cardiovascular problems, cure constipation, and is ideal for patient diabetes.
This consumes food water and provides support with gel-like characteristics, which are rich in fiber in foods like rice, fruits, and bovines. They all are essential for fitness, digestion, and preventive medicine. It draws in liquid(water) while absorption and transforms into a gel. It slows it down the digestive cycle.A purebred tall pea plant is cross-pollinated with a tall, can you please help
heterozygous pea plant. Use a Punnett square to determine the probability the offspring inherita
recessive short allele. (I point)
75%
25%
0%
50%
Answer:
50%
Explanation:
because if you use the box method you see that half receive a short alele
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What energy yield (in molecules of ATPATP per molecule of monosaccharide) would you predict for the bacterial catabolism of raffinose, a trisaccharide
Answer:
The correct answer is 2.67 ATP per molecule.
Explanation:
With the help of sucrose, it comes to known that the dissociation of a sugar-sugar bond generates one phosphorylated monosaccharide. Therefore, raffinose, which is a trisaccharide exhibits bonds of two sugar-sugar molecules. Post dissociation, they will generate one regular monosaccharide and two phosphorylated monosaccharides.
There will be the generation of net ATPs by each phosphorylated monosaccharide as they are already phosphorylated. While the regular monosaccharide, which is first needed to get phosphorylated will only produce two ATPs. Thus, a total of 8 ATPs will be produced by one molecule of raffinose. After dividing by three monosaccharides, the molecule will produce 8/3 = 2.67 ATPs per monosaccharide.
What term matches the following definition: " ...a fundamental evolutionary process that results in both the adaptation of species to their environments and the generation of biodiversity (new species)"?
Answer:
a.Natural selection
b.Evolution
c.Artificial selection
d.Co-evolution
The correct option is A.
Natural selection.
Explanation:
The correct answer is natural selection because Natural selection is an evolutionary process which was discussed by Charles Darwin in 1859, In one of his theory that it is the ability of organisms to develop traits or characteristics that will help them to adapt and ensure their survival in their environment and then passing or transferring these new traits to new species or offsprings over generations through reproduction.
a) There are three nucleotide in each codon, and each of these nucleotides can have one of four different bases. How many possible unique codons are there?
b) If DNA had only two types of bases instead of four, how long would codons need to be to specify all 20 amino acids?
Answer:
Explanation:
There are 64 possible codons to be specified for, If we have three nucleotides with 4 bases the set of all combinations can encode
4x4x4 = 64 amino acids
This will give 64 different combinations of four nucleotides
If we have 2 bases with 4 nucleotide we have a possibility of having 16 codons specifying for 20 amino acid.
If we have 2 nucleotides with 4 bases the set of combination is
4×4 = 16 amino acids of four nucleotides
What type of transmission occurs when a pathogen is spread though sneezing or coughing
Answer:
air transmission
Espero que te sirva
what is a radical a group of ions
Answer:
A radical is a group of atoms of elements carrying a charge. radicals or ions are formed by gaining or loosing ions. positive radical ions are called radical cations whereas negative radical ions are called radical anions.
hope this helps you u :)
cytoplasm and nucleus together constitute which part
Answer:
Cytoplasm and nucleus together constitute Protoplasm .
The essential difference between the knowledge level and the comprehension level of Bloom’s Taxonomy is that at the knowledge level one is asked to
Answer:
Explanation:
Knowledge it expected that an individual have the ability to recall some specific terms,facts,methods, processes, pattern, structure, or setting of a thing without necessarily understanding the concept.
Comprehension is the understanding an individual knows or get from what is being communicated and the ability to make use of the idea that is been communicated without seeing the full expression if it.
Comprehension is the explanation and understanding of knowledge i.e what is known and can be recalled.
characteristics of euglena
Answer:
Euglena is a large genus of unicellular protists: they have both plant and animal characteristics. All live in water, and move by means of a flagellum. This is an animal characteristic. Most have chloroplasts, which are characteristic of algae and plants.
Describe at least 2 benefits and 2 drawbacks there might be for animal cells (including humans) to make their own food through photosynthesis.
Answer:
here.
Explanation:
Benefits would be that we'd be autotrophs, meaning that we'd be independent of an external source of organic compounds for energy. All we'd need is the sun and carbon dioxide. It's a simpler and less energy-consuming process than having to undergo digestion, absorption and then assimilation.
Cons would include the fact that it provides a very limited amount of energy only for the day. Which means humans will be inactive at the night time because the energy won't be able to support our activities. Since we don't have a surface area as big as leaves, our deep cells (like those of our organs and bones) will suffer most from the lack of energy since sunlight cannot penetrate our fat, muscles and bones. This can cause organ failure if our cells solely depended on diffusion.
Our high metabolic rate and our need for energy makes photosynthesis very very ineffective.
7.Which of the following factors does not cause weathering of rocks.
A. light
B. temperature
C. water
D. wind
Answer:
Light I believe.
Explanation:
Which best defines the term matter?
Anything that can be seen
Anything that takes up space and has mass
All the living things on earth
O Anything in the atmosphere
Answer:
Anything that takes up space and has mass
Explanation:
The authors constructed a phylogenetic tree using nucleotide substitutions as well as a tree built using indel information. What relationships did each support; do they agree completely with each other
Answer:
Both types of genetic data can be used to generate evolutionary trees, but indels increase phylogenetic resolution
Explanation:
Nucleotide substitutions, also known as single nucleotide polymorphisms (SNPs), are genetic changes at specific positions in the genome that can be used to compare two or more sequences through a local alignment. SNPs enable to estimate the evolutionary distances among sequences and they are the most common type of genetic variation used to draw phylogenetic trees. On the there hand, sequence insertions and deletions, collectively referred to as indels, can increase the resolution of an evolutionary tree because this type of variation is less frequent in the population (i..e., indels generally have higher deleterious effects than SNPs). However, it is important to note that, in the case of indels, it is imperative to include more complex alignment algorithms in order to analyze data derived from this type of genetic variation.
Flowers may be solitary, as in a zinnia or dahlia, or appear in clusters or a/an _______________, as in a/an _______________. g
Answer:
The answer is "inflorescence, oak"
Explanation:
An inflorescence is a flower group, which are clustered nearby in a stalk, which is also known as the peduncle. In lily, the individual flower was found, not quite as groups. However, the flowers are set as an inflorescence in the oak tree. It refers to a group or community of a flower cluster borne on a flower, which is traditional flowers of oak are called catkins, that's why 'inflorescence, oak' is the reaction.Explain to your lab mate the health risk associated with consuming a diet low in vitamin K along with the ingestion of antibiotics over multiple days. How would the termination of antibiotic treatment help to remove this health risk?
Answer:
Vitamin K, a fat soluble vitamin is rich in green leafy vegetables,and also produced by bacterial in the intestine.
Its major function is blood clotting or arrest of bleeding to prevent blood loss.
Antibiotics especially with Cephalosporins,reduces Vit. K absorption in the intestine. Intake of these antibiotic kill the targeted bacterial together with the the bacteria which produces Vit. K in the intestine.
Hence when antibiotic is taken with low level of Vit, K the individual is prone to excessive bleeding or haemorrhage,because the concentration of the vitamins is further depleted.
If the medication is stopped,the condition will improve because the bacteria which produces Vt K can resumes the secretions,and its absorption will resume
Explanation:
¿Qué características crees que deben tener los métodos anticonceptivos para ser eficaces en el control de la natalidad?
Answer:
Los métodos anticonceptivos para ser eficaces en el control de la natalidad deben ser seguros para las personas que los utilizan, es decir, no tener efectos adversos, o al menos, la menor cantidad posible. Ser reversibles, es decir, que no generen infertilidad de por vida. Deben ser además fáciles de usar, cómodos y fáciles de conseguir, esto es, económicos. Además deben ser eficientes en su objetivo de evitar la concepción, que es para lo que fueron creados.
Explanation:
La tasa de eficacia de un método anticonceptivo se mide por la cantidad de embarazos que se producen cada 100. Esta parece ser la característica más importante, y si bien es una de las más importantes, hay que tener en cuenta todos los otros factores mencionados, es decir que la gente pueda acceder a ellos, sean cómodos, seguros y a un precio coherente.
DIHYBRID CROSSES
In all of the examples we have only been concerned with one trait. It is possible, however, to track the inheritance of more than one trait at a time. When one is investigating the inheritance of two traits at once the cross is called a dihybrid cross. Strictly speaking, a dihybrid cross is one between two individuals that are heterozygous for two traits, meaning that they are hybrids in two senses. For example, in humans eye color is determined by multiple factors, but if we compare only blue eyes to brown eyes, brown is dominant (R) and blue acts as a recessive allele (r). If a man heterozygous for both eye color and bent little finger has a child with a woman who also heterozygous for both traits, this would be a dihybrid cross. Which is/are possible genotypes for a person with bent little finger and blue eyes?
1. bbrr
2. BBRR
3. BBrr
4. Bbrr
Referring to the previous question, which is/are possible genotypes for a person with straight little finger and blue eyes?
1. bbrr
2. BbRr
3. Bbrr
4. bbRr
Answer:
Question 1: bbrr
Question 2: bbRr
Explanation:
To address the first question, the possible genotype for someone with bent little finger and blue eyes would be bbrr.
Since brown eye (B) is dominant over blue eyes (b), in order for the blue eye color to be expressed, it has to be in bb condition. The only option with bb genotype is option 1.
For the second question, the possible genotype for a person with a straight little finger and blue eyes would be bbRr.
Blue eye genotype is bb as explained in the first question while straight little finger would be Rr since the bent little finger has been represented by the genotype rr in the first question.
You will be the expert: Imagine you are teaching a class on controlling microbial growth in the environment. To test your students, you will present them with a scenario including a site and some probably microbes present. They must design a strategy to eliminate harmful microbes from the area.
1A. Come up with a scenario/situation including a site and some probable microbes present.
1B. Come up with possible solution/analysis to that scenario/situation in order to eleminate harmful microbes.
Answer:
A possible scenario would be many rusty pipes with abundant soil in an abandoned area or house.
The probable microorganism would be clostritium tetani, which causes tetanus disease.
This clostridium is eliminated once the oxidized surfaces are exterilized, eliminated and cleaned with disinfectants.
In addition, it could be sprayed with disinfectant on the ground to kill the presence of possible spores of this bacterium.
Explanation:
Clostridium tetani is a bacterium that affects the central and peripheral nervous systems of humans.
Today there is a vaccine for this bacterium, which is called tetanus and is administered against a possible accident, surgical act or risk of having been inoculated with the bacteria.
The current tetanus vaccine has a longevity of 10 years in the human organism, once this period has passed, the booster should be given.
This bacterium coexists with other microorganisms in this environment with accumulations of soil and rust, which the most dangerous would be fungi (they trigger deep mycosis). An example of these fungi is: histoplasma capsulatum, responsible for generating histoplasmosis.
The scenario or situation including a site and some probable microbes present would be a controlled Laboratory.
The possible solution or analysis to that scenario in order to eliminate harmful microbes is fumigation.
Identification of microbes is critical in determining which microbial removal strategies will be used in a site.
The scenario or situation including a site and some probable microbes present would be a controlled Laboratory where microbes are isolated from the site via cultured methods. When carrying out microbial culture, the culture plates usually support the growth of a wide range of microorganisms. As a result, biochemical approaches may be used to distinguish one microbial population species from another. They may exist in various species of fungi, viruses, bacteria, protozoa, etc.
The elimination of microbes is dependant on the size of the area being analyzed. This is done by the application of formaldehyde to the area. Other methods include alcohol sterilization and heat sterilization for cleaning and sanitizing surfaces of the laboratory and equipment respectively.
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