Answer:
False, they cannot
which statement regarding normal microbiota of the human respiratory system is false?
Given what we know about the respiratory system, we can confirm that the statement regarding normal microbiota of the human respiratory system that is false is option B " The upper respiratory tract is mostly sterile".
As far as the human respiratory tract and system, it was previously believed that the upper tract contained bacteria while the lower respiratory tract was sterile. Recently, however, this has been proven to be false. Bacteria are in fact present in the entire respiratory tract even in healthy individuals. For this reason, options a, c, and d are true, and the only false option present is b.
This question was answered based on the complete question found online that states:
Which statement regarding normal microbiota of the human respiratory system is FALSE?
a) The trachea normally may contain a few bacteria.
b) The upper respiratory tract is mostly sterile.
c) The ciliary escalator in the bronchial tubes keeps the lower respiratory tract nearly sterile.
d) Potentially pathogenic microorganisms are present in non-sterile portions of the respiratory tract but usually do not cause disease.
To learn more visit:
https://brainly.com/question/8401861?referrer=searchResults
which animal is one of only two mammals that lay eggs?
Explanation:
the echidna is the answer
Answer:
Platypus
Explanation:
help please it's biology
Answer:
look
Explanation:
1a. Dendrite
b. cell body
c. nucleus
d. axon
e. soma
2. c, b
3. Vacoule and chloroplast
4. nerve impulse travels from left to right.
5. Sensory neuron sends electrical impulses to a relay neuron.
6. Respiration. Due to respiration in the mitochondria glucose molecules are broken down to release energy.
please help me!!!
Oral groove in paramecium is situated on
a.Dorsal side
b.Lateral side
c.ventral side
d.none
Edexcel GCSE combined science biology paper 2 2020
If you know any questions please tell me just one will do TOT
Does surface area increase permeability of membrane
Answer:
The magnitude of the concentration gradient depends on the membrane permeability. The concentration gradient changes the available surface area. It is suggested that a high-permeability compound is absorbed mainly from the top of the villi, while a low-permeability
Explanation:
Along one side of a DNA molecule, the nucleotides are connected to each other by ________ bounds between _______
Answer:
Nucleotides are joined together by covalent bonds between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar in the next nucleotide.
Explanation:
Along one side of a DNA molecule, the nucleotides are connected to each other by covalent bonds between the phosphate group pf one nucleotide and the third carbon atom of the pentose sugar (deoxyribose sugar) in the next nucleotide.
How nucleotides are arranged in DNA?Two nucleotides are attached via a phosphodiester bond to form dinucleotide. Another nucleotides are added in same manner to form polynucleotide chain.
In this polynucleotide chain, the nucleotides are connected to each other by covalent bonds between phosphate group of one nucleotide and third carbon atom of deoxyribose sugar and forms a phosphate backbone of DNA.
To know more about DNA :
https://brainly.com/question/35140
#SPJ2
Explain the relationship between the food we eat and the energy we have. What other reasons do we need to consume food?
BRAINLIEST AND 50 POINTS!!
Based on information from the cladogram and the data table shown below, which of the following best describes the evolutionary history of rabbits?
Claws/Nails Feathers Jaws Lungs Mammary glands
Bird X X X X
Hagfish
Lizard X X X
Rabbit X X X X
Salamander X X
Tiger X X X X
Trout X
Image depicts a cladogram with hagfish, trout, salamander, lizard, bird, rabbit, and tiger represented. Trout diverge from hagfish with the introduction of jaws. Salamander diverges from trout with the introduction of lungs. Lizard diverges from salamander with the introduction of claws and nails. Bird diverges from lizard with the introduction of feathers. Rabbit and tiger diverge from lizard with the introduction of mammary glands.
They are more closely related to tigers than they are to birds.
They became able to produce mammary glands as a result of lacking feathers.
They evolved into a separate species due to the presence of mammary glands.
They share a more recent common evolutionary ancestor with salamanders than they do with lizards.
Answer:
A. They are more closely related to tigers than they are to birds.
Explanation:
Short answer: I took the test
Actual explanation:
-If you look at the first graphic that you have, you will notice that rabbits and tigers have all the same boxes checked off. AND birds and rabbits only have 3 checked off.
-salamanders actually have less in common with rabbits than they do with lizards, salamanders have 3 things in common, and lizards only have 2, proving option D. wrong. (if you are wondering where I got that evidence, look at the chart) AND if you look at the cladogram, lizards are closer to the rabbits than salamanders meaning that lizards have a more common ancestor (I think?) But nevertheless, it it still wrong, because of the above evidence.
- The options with mammary glands are also incorrect for these reasons, B. makes no sense, literally no sense, why would not be able to produce mammary glands with feathers, so B, is automatically out. With option C, rabbits did not evolve into a whole new species, it is the clade showing that tigers and rabbits both have mammary glands. There is no showing of a new species on the cladogram, and I don't think that it makes sense to evolve into a whole species just because of mammary glands.
- Now, if you look at the cladogram again, you wills see that tigers and rabbits are closest together, meaning that they are closely related. BUT, birds and rabbits are also the closet together, so, refer back to point a, that the chart shows that birds only share 3 out of the 4 that rabbits and tigers share. so that's that.
So after doing the work, option A. Rabbits are more closely related to tigers than they are birds. (and If you read my long explanation THANK YOU I put time and effort into it to make it accurate :))
Hope this helped :)) ~addison
Answer:
A. They are more closely related to tigers than they are to birds.
Option A. Rabbits are more closely related to tigers than they are birds.
Explanation:
I have a shorter answer.
Question 27
A prokaryotic cell has which of the following?
A
Centrioles
B
Lysosomes
C
Plasma membrane
D
Mitochondria
©
Endoplasmic reticulum
Answer:
C) Plasma Membrane
Explanation:
The four main structures are Plasma membrane, ribosome, cytoplasm, and genetic material.
The place where a group of organisms lives is called the ___________. The combination of the community and habitat is called the ___________.
Answer:
the first blank is biodiversity. I think like that
The place where a group of organisms lives is called the habitat. The combination of the community and habitat is called the ecosystem.
What is habitat and ecosystem?An ecosystem is basically the neighborhood where animal lives. The habitat is the animal's address in that neighborhood. Some animals can survive in more than one habitat. Other animals are limited to certain habitats. For example, moose habitat is more specific than gray squirrel habit.
Moreover, ecosystem is defined as the interrelationships between the biotic and abiotic component of the environment. Whereas habitat is defined as the natural environment in which a particular species of plants and animals lives.
Therefore, a habitat is a place where an organism makes its home. A habitat meets all the environmental conditions an organism needs to survive. For an animal, that means everything it needs to find and gather food, select a mate, and successfully reproduce.
Learn more about habitat and ecosystem:
https://brainly.com/question/15125194
#SPJ2
when not engaged in the processes leading to cell division, how many chromosomes from your mother are present in the nucleus of each of your somatic cells?
Answer: the answer is
23
True or false: The size and complexity of organisms is directly related to the number of total chromosomes it has. If false, make it a correct statement
I think the answer to this is true, but I'm not really for sure
Two noncellular agents, smaller than viruses, are infectious RNA strands called ___ and infectious proteins called ___. prions; viroids prions; phages viroids; phages viriods; prions prions; capsomeres
Answer:
A. prions; viroids
Explanation:
WILL GIVE BRAINLIEST AND 20 POINTS!!! What in the plant cell makes photosynthesis work?
Answer:
photosynthesis works in the chloroplasts
Explanation:
Answer:
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
The thin, protective mucous membrane composed of nonkeratinized stratified squamous epithelium with numerous goblet cells that is supported by areolar connective tissue is known
The conjunctiva is a thin transparent mucous epithelial membrane that lines the inner surface of the eyelids made up of goblet cells whose function is to protect the eyeball.
The conjunctiva is an almost transparent membrane that covers the white part of the eye, the sclera, and also the eyelids on the inside.
Its function is to protect the eyeball from external agents, although it also intervenes in the formation of tear components and in the immune defense of the eye.The conjunctival epithelium is a non-keratinized squamous stratified epithelium like the corneal epithelium but contains mucin-secreting goblet cells that maintain the tear layer.Therefore, we can conclude that the conjunctiva is a mucous membrane that is formed by non-keratinized squamous epithelium whose function is protective and lubricant.
Learn more here: brainly.com/question/13948705
Who discovered mercury and what is your source?
Answer: Sumerians
Explanation: www.whodiscoveredit.com/who-discovered-mercury.html
Answer:
Galileo Galilei first discovered mercury my source https://www.nhm.ac.uk/discover/planet-mercury.html#:~:text=Mercury%20is%20one%20of%20the,Galileo%20Galilei%20and%20Thomas%20Harriot. that link
Explanation:
Hope di helps
One antibody type has thousands of antigen receptors on its cell surface. How many types of antigens will typically fit these receptors
Answer:
one
Explanation:
Think back to the activity from the beginning of the lesson. After what you have
learned about substances and mixtures, how have your ideas changed?
Answer:
......what lesson....
Explanation:
would you mind clearing up the question a little
why it is important to base scientific theories and models on empirical evidence as opposed to other ways of knowing such as religion
Answer:
A theory not only explains known facts; it also allows scientists to make predictions of what they should observe if a theory is true. Scientific theories are testable. New evidence should be compatible with a theory.
Explanation:
why do x-linked conditions appear more frequently in males than in females?
Answer:
Because, with females, who have two x-chromosomes, meaning both parents (mother and father) have to pass down alleles for the condition, and males only need one parent (mother) to pass down the condition for the male to have the mutation
X-linked conditions appear more frequently in males than in females because:-
In males there is only one X chromosome.Any X linked condition will appear in males as there will no other X chromosome to dominate it.In female there are two X- chromosome. If any one of the two X chromosome has defect other chromosome will dominant it and will the female will act as a carrier.What are X linked disorder?X-linked disorders are caused by variants in genes on the X chromosome, one of the two sex chromosomes in each cell. In males who have only one X chromosome, an alteration in the only copy of the gene in each cell is sufficient to cause the condition.
To know more about chromosome disorder here
https://brainly.com/question/2753255
#SPJ2
3. The abilities to dissolve in water and to conduct electricity are examples of
A. natural properties.
B. chemical properties.
C. natural laws of matter.
D. physical properties.
Answer:
D
Explanation:
1. Will loves to go fishing in the coastal estuary. He brings home his catch every weekend and bakes the fish for dinner. The next time he goes to his favorite fishing area, a sign is in place, warning residents of high heavy metals in the water. Which statement best explains the impact of eating fish from the estuary?
Heavy metals can biomagnify in large fish, making human consumers ill.
Heavy metals are water soluble; humans can eat them in small amounts.
Large fish will die from the heavy metals, but small fish can be consumed.
Will should avoid small fish but can collect large fish with less heavy metals.
2. fisherman collecting shellfish notices that many are very small and lack the thick hard shell he is accustomed to seeing in the species. Which statement best explains what may be impacting the shellfish population?
Ocean acidification
Ocean warming
Coral bleaching
Climate change
Answer:
Ocean Acidification
Explanation:
The high level of acid in the ocean has caused the shellfishes shell to wear down.
Could you please help me on this I could use some correct assistance! Your help would be great ❣️I believe you just have to put yes or no.
1a. Prokaryotic cells doesn't have a nucleus.
1b. Eukaryotic cells have a nucleus.
Page 2 - Answers2a. Prokaryotic cells doesn't have any membrane-bound organelles since they're single cells.
2b. Eurkaryotic cells have a membrane-bound organelles. If they didn't why would they have a nucleus?
3a. Prokaryotic cells have a plasma membrane.
3b. Eukaryotic cells have a plasma membrane too.
4a. Prokaryotic have circular DNA.
4b. Eukaryotic cells also have DNA.
5a. Prokaryotic cells have cytoplasma.
5b. Eukaryotic cells also have cytoplasma.
6a. Prokaryotic cells have ribosomes.
6b. Eukaryotic cells also have ribosomes.
7a. Most prokaryotic cells have a cell wall. Mostly plant cells have cell walls.
7b. Eukaryotic cells don't have a cell wall. Like I said, plant cells have cell walls.
8a. Prokaryotic are simple cells, since they don't have lots of organelles.
8b. On the other hand, prokaryotic cells are more complex since they have lots of organelles.
9a. Prokaryotic cells are smaller than Eukaryotic cells. They measure in 0.1 to 5.0 micrometers.
9b. Eukaryotic cells are much bigger, measuring in 10-100 micrometers.
10a. Prokaryotic cells are unicellular.
10b. Eukaryotic cells are multicellular.
11a. Prokaryotic cells are in the Monera Kingdom, which consists of bacteria.
11b. Eukaryotic cells are in the animalia, plantae, fungi, and protista kingdom.
Hope this helps! Good luck :D
Which of the following muscles does NOT flex the wrist?
Answer:
b. Extensor digitorum
Explanation: is correct
A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) ____________ neuron
Answer:
! autonomic motor
Explanation:
Group of different tissues working together to do a job
Answer:
organ
Explanation:
cell tissue organ organ system organism
Given that the fossil record provides the key evidence for evolution, what is the importance of the theory of evolution?
Answer:
It represents our understanding of the process by which evolution occurs.
Explanation:
How many rounds of mitosis produce 64 daughter cells?(1 point)
4
2
6
8
The correct answer is 6 rounds.
Hope this helps!
Answer:
6
Explanation:
different types of cells in your body look and function differently. the basis for these differences is:
Different types of cells look and function differently, the basis for these differences is DIFFERENT PATTERNS of gene expression. This process (differential gene expression) leads to cell specialization.
Gene expression refers to the process by which the genetic information flows from a DNA sequence (i.e., a gene) to an mRNA molecule and finally to a protein.
In somatic (body) cells, the differential patterns of gene expression lead to the generation of different proteins and ultimately to different types of cells (cell phenotypes).
In consequence, cells are specialized to perform specific functions because different genes are being expressed.
Learn more in:
https://brainly.com/question/3533860