page 18 1.4. how do biological anthropologists know what they know? which of the following are subjects of scientific laws?

Answer:

name of oraganism????.........

Answer:

jhrgthfvdsvfhwegf

Explanation:

jhdstefuysdzvdnfgjewhfghkvdakjad

An allergic reaction develops after the second exposure to an allergen as a result of a chain of events.

Although the first exposure does not result in symptoms, it may render people susceptible to the allergen (a process known as sensitization).

More severe responses could result from repeated exposures. After someone has been exposed to an allergen or experienced an allergic reaction (becomes sensitised), even a very brief exposure to an allergen might result in a severe reaction.

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Cell uses two different means of transport for in and out for transporting molecules known as active and passive transport .

Active transport move molecules and ion from lower concentration to higher concentration with help of energy in form of ATP . Passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.

Active transport involves evolves moving of molecules across cellular membrane by using cellular energy. one of the main example of active transport is transfer of calcium ion out of heart muscle. while process of passive transport plays important role in homeostasis .

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Do Eukaryotic Cells have Mitochondria?

In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus, and lysosomes.

What is a  Eukaryotic cell?

A eukaryotic cell is one of two different types of cells. Organisms that are based on the eukaryotic cell are called “eukaryotes” and include plants, animals, fungi, and protists.

What is Mitochondria?

The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. It is the power house of the cell; it is responsible for cellular respiration and production of (most) ATP in the cell. Each cell can have from one to thousands of mitochondria. Mitochondria also contain extranuclear DNA that encodes a number of rRNAs, tRNAs, and proteins.

More condensation nuclei, more cloud formation and precipitation are the results of spraying aerosols into the atmosphere.

Aerosols greatly influence clouds formation and its growth. Water droplets gather readily around particles which provides a particle-rich atmosphere that promotes cloud formation.

So we can conclude that more condensation nuclei, more cloud formation and precipitation are the results of spraying aerosols into the atmosphere.

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Answer:

Ticks are little critters that eat at human blood, but humans do not actually get harmed by it. Yes, one could get transmitted diseases from the tick, but the tick itself is not harming the human.

A parasite, on the other hand, gets their food and benefits AT THE EXPENSE of their host. This means that the parasite causes harm directly to the host.

The tick does not cause direct harm, so it is more like a commensal, not like a parasite.

The plasma membrane defines the boundary of the cell and determines the nature of contact with the environment.

The plasma membrane is the outermost layer of an animal cell. It is composed of peptidoglycan and has a lipid bilayer with proteins embedded in it.

The plasma membrane is also known as cell membrane and is a selectively permeable membrane. It allows certain molecules and solutes to enter into the cell and go outside of the cell whenever necessary.

Plasma membrane plays a vital role in the communication between two consecutive cells as it is selectively permeable. The plasma membrane also maintains the concentration of the cell, by releasing or allowing certain solutes to enter and go out of the cell.

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At pH 7, this enzyme's maximal initial reaction rate is 350 X 10>6 per minute of product produced with a saturation of 2–4g of substrate.

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Adult unconscious handwriting is unique because unconscious handwriting takes years of practice to intentionally develop, option C.

A person's handwriting is mostly as unique as their personality. The uniqueness of an adult's unconscious handwriting is as a result of development over time meaning it takes years of practice to intentionally develop their unconscious handwriting.

The primary influences on the development of one's own unique handwriting style are the cultural environment and the characteristics of the written form of the first language that one learns to write. Adults have more brain capacity than children and much more active when writing with hand.

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The answer is Karyotype. By definition, the karyotype is a test that looks at the shape, size, and number of a person's chromosomes.

The other options are incorrect because:

Diploid means having two complete sets of chromosomes from each of the parents.

Homologous could be a gene that is inherited by a common ancestor.

Klinefelter refers to a genetic condition where a boy is born with an extra X chromosome.

Answer:

I think answer is liquid vesicles concentration was 0.3 mg/ ml

D. DNA polymerase checks for errors and corrects those it finds.

A. DNA polymerase pairs nitrogenous bases the same way each time.

Enzymes are proteins that act as biological catalysts, speeding up chemical reactions in living organisms.

Enzymes play a crucial role in ensuring that new DNA strands are almost completely error-free during DNA replication. DNA polymerase the main enzyme responsible for DNA replication has the ability to check for errors and correct those it finds as it builds new strands.

The correct option are D and A

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Answer:

answer is A just did it on my acellus

Explanation:

The correct answer is option (A) the running water will sweep the algae downstream and keeps it from growing.

What is algal bloom?

What causes algal bloom?

As the river and streams are always flowing it will sweep the algae which will prevent it from growing further.

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Answer:i cant see the picture

Explanation:

Answer:

The population has decreased because the number of live births has decreased.

The evidence suggests that the population has decreased because of the lack of food availability and resource population due inappropriate management of habitat. The parrots losing their resource population has affected the reproduction cycles of the breeding females causing lower live births in these parrots.  

Climate change also should be taken into account, with the everyday change in the climate it makes for migration to populated breeding grounds unmanageable. If this proves to be the case then an artificial climate controlled sanctuary may be one of the last hopes to saving this breed on parrot.  

Based on the evidence, I conclude that improving or creating an ecosystem where the food resources are plentiful and the climate was sustainable would increase the breeding of the animal.

Explanation: Hope this Helps.

The chromosomes part  that show a correct depiction of genetic information in a replicated chromosome is in the  3rd image from the first picture and it is showing the image that is saying that is being shown in the diagram.

A replicated chromosome contains two identical double strands of DNA , the chromosomes that are joined at the centromere.

Chromosomes are coiled structures made of DNA and proteins. Chromosomes form after DNA replicates; prior to replication, DNA exists as chromatin. Chromosomes contain genes, which code for proteins.

Human cells normally is  46 chromosomes with two sets of chromosomes that is one set inherited from each parent.

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Answer:

the human body consists of some 37.2 trillion cells.

Answer:

The properties of a mineral that describe the way it breaks apart are called cleavage and fracture.

Cleavage refers to the way a mineral breaks along planes of weakness in its crystal structure, resulting in smooth, flat surfaces. The number and orientation of these planes determine the cleavage properties of a mineral.

Fracture, on the other hand, refers to the way a mineral breaks when it does not have well-defined planes of weakness. Fracture can result in irregular or jagged surfaces, and can be described using terms such as conchoidal (shell-like), fibrous, or uneven.

Both cleavage and fracture are important properties of minerals, as they can be used to identify different types of minerals and distinguish them from one another

Answer:4 2

Explanation:

All of the options are chemical approaches to control micro-organism excepts: B Disinfectants

19. The scientific name for modern man is: B. Homo sapiens

20. kingdoms are prokaryotic organisms placed D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm

22.  taxonomic groups contains closely related organisms A. Genus

23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium

24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi

25. Ecology is a biological science that deals with except: D. none

26. The organism that are consumer is D. Scavengers

Disinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.

Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.

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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants

19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens

20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm

22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class

23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium

24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population

25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none​

26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers

Answer:

A

Explanation:

The prokaryotic cells have nucleus in them

It is necessary for cells to have nucleus acids in their nucleus because they carry the genetic blueprint of a cell and carry instructions for the functioning of the cell.

A nucleic acid is a chain of nucleotides that biological systems use to store genetic information. It produces the DNA and RNA molecules, which hold the data necessary for cells to produce proteins.

A "polymer" of "nucleotides," or a long molecule made up of them, is referred to as nucleic acid. All life on Earth needs nucleic acids to store genetic information; in other words, nucleic acids serve as the "source code" or fundamental blueprint for the creation of cells.

Your genetic information, which you acquired from your parents, is stored and transmitted by nucleic acids. Genes are unique pieces of nucleic acids that are in charge of creating every protein in your body. 

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Answer:

61 for Plate 1 ,

59 for Plate 2

Explanation:

Given that the original stock has a concentration of  6 * 10^6 infectious virus particles /mL

and it was diluted by 1:10000

New concentration = ( 6 * 10^6 ) / 10000 = 600 infectious virus particles/ mL

Also given that the virologist plates 100 mL of each sample

therefore; 0.1 mL has a count of 60.

The experimental results that he is most likely to observe in the duplicate plates will be ;

61 for (Plate 1) ,

59 for (Plate 2)

Answer:

The answer is B

Explanation:

just cause lol

The study of a living being is called biology.

The correct answer is B.

The characters in the plant are controlled by the genes which are present on the chromosome. The genes are always present in pairs and a single gene is known as an allele. The alleles are as follows:-

According to the question, most of the offspring are tall in height due to the dominant allele while the number of the dwarf plant is less as this character is shown by the recessive genes.

The dominant plant suppresses the character of a recessive gene and hence the number of the dominant plant is always more.

Hence, the correct answer is B. Dwarf stem length is a recessive trait.

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Answer:

el proceso de recibir o dar instrucción sistemática, especialmente en una escuela o universidad.

Explanation:

espero que esto ayude!

Vanessa has a better absolute threshold and more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.

Carlton and Vanessa were lab partners for a biology class and were asked to run a smell test experiment on each other.

Vanessa was excellent at noticing the difference between various intensities of vanilla and evergreen.

Carlton, on the other hand, couldn't distinguish the difference in the intensities of both vanilla and evergreen, though he could tell the smells of both.

Hence, based on the information provided in the scenario, it can be inferred that Vanessa has a more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.

The two significant aspects that are involved in the scenario are absolute threshold and difference threshold.

The absolute threshold is the smallest quantity of a stimulus that an individual can detect, whereas the difference threshold is the minimum difference in stimuli that an individual can detect.

Carlton could recognize the stimuli's smell but not the difference in the intensity of vanilla and evergreen.

This shows that Carlton has an impaired absolute threshold.

He could not detect the smallest quantity of a stimulus to differentiate between the smells.

Vanessa was quite good at noticing the difference in the intensities of vanilla and evergreen.

This means that Vanessa has a more sensitive difference threshold than Carlton. She could detect the minimum difference in stimuli required to differentiate between smells.

Vanessa also has a better absolute threshold than Carlton as she could detect the smallest quantity of stimulus required to detect the smells.

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Electromagnet A is likely to have a stronger magnetic field in (B) because it has more electric current from two batteries.

This is because the strength of an electromagnet is directly proportional to the current flowing through its wire and inversely proportional to the distance between the wire and the object being magnetized. The strength of an electromagnet depends on the amount of current flowing through its wire.

The more current there is, the stronger the magnetic field. Therefore, if electromagnet A has more electric current from two batteries compared to electromagnet B which has electric current from one battery, then it is more likely to have a stronger magnetic field. Moreover, the magnetic field strength also depends on the distance between the wire and the object being magnetized.

The closer the wire is to the object, the stronger the magnetic field will be. However, in this case, the two electromagnets are using the same size nail, which means the distance between the wire and the nail is the same for both electromagnets. Therefore, the difference in magnetic field strength is likely to be due to the difference in electric current flowing through their wires.

In summary, Electromagnet A is likely to have a stronger magnetic field than Electromagnet B because it has more electric current from two batteries. The correct answer is B.

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