Answer:
(B) It is better for the cell if most molecules are prevented from entering.
I hope this helped at all.
Group of different tissues working together to do a job
Answer:
organ
Explanation:
cell tissue organ organ system organism
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.
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:
Explain the relationship between the food we eat and the energy we have. What other reasons do we need to consume food?
dna is cut at __ sequences by restriction enzymes.
Answer:
the
Explanation:
DNA which is a genetic material is cut at restriction site or Target sequence
What is restriction enzymes?Restriction enzymes refers to protein that is produce by bacteria and recognizes a DNA by cleaving to it and cuts the DNA only at that specific site, which is known as restriction site or target sequence.
DNA is the genetic constituent of a living organism.
Therefore, DNA is cut at restriction site or Target sequence
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Edexcel GCSE combined science biology paper 2 2020
If you know any questions please tell me just one will do TOT
which division of the autonomic nervous system is responsible for conserving energy and replenishing nutrient stores?
Answer:
parasympathetic division
Explanation:
The parasympathetic system functions during rest of the somatic system and is responsible for anabolism and restoration of energy stores.
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
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.
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please help me!!!
Oral groove in paramecium is situated on
a.Dorsal side
b.Lateral side
c.ventral side
d.none
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 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.
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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
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:
Which of the following muscles does NOT flex the wrist?
Answer:
b. Extensor digitorum
Explanation: is correct
What are the characteristics of the mantle?
[tex] \: \: \: [/tex]
It is mostly solid rock, but less viscous at tectonic plate boundaries and mantle plumesMantle rocks there are soft and able to move plastically (over the course of millions of years) at great depth and pressure. The transfer of heat and material in the mantle helps determine the landscape of Earth.hope it helps
[tex] \: \: \: [/tex]
Answer:
Here's something i found to help.
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:
Given that breaking bonds requires energy and forming bonds releases energy, explain how we know that cellular respiration releases energy overall?
because it's overall final fee energy value is less than it's initial, meaning that it has a negative free energy amount. therefore, there is a net release of energy in cellular respiration, so we know it releases more energy than it invests into the bonds of its products.
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:
in the gel electrophoresis lab, you determined the ________ of three different dna samples.
In the gel electrophoresis lab, you determined the genotype of three different DNA samples.
Gel electrophoresis is a process that allows you to separate fragments of DNA based on size. You place different size fragments of DNA into a gel, then apply current to the buffer surrounding the gel, the DNA will travel through the gel but move at different speeds based on the different fragment sizes. Larger fragments of DNA will move slower than smaller fragment sizes.
Let consider two different alleles:
the bigger allele -- Athe smaller allele -- aThe bigger allele happens to contain a restriction site that is allowed to be cleaved by a restriction enzyme while the smaller allele has a mutation in the restriction site that means that it will not be recognized and cleaved by that same restriction enzyme.
Let us remember that the person will have two copies of this gene and can be:
H0m0zygous dominant AAh0m0zygous recessive aaheterozygous AaAn individual with h0m0zyg0us AA only have versions of the gene that will be cut by the restriction enzymes, each allele producing a small fragment of DNA and a medium-size fragment of DNA
An individual with the genotype aa only has the version of the gene that does not have the restriction site and therefore does not get cut by the restriction enzyme. The DNA sample from this individual will have a single larger fragment of DNA.
When you isolate DNA from heterozygous Aa, half of the DNA isolated has the allele with the restriction site that gets cut into two fragments while the other half will have the allele that does not have the restriction site and remains whole when a restriction enzyme is added.
Therefore, we can conclude that in the gel electrophoresis lab, you determined the genotype of three different DNA samples.
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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.
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.
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According to the food chain shown, about how much energy from the grasshopper trophic level is transferred to the frog trophic level?
The amount of energy transferred to frog is 10% of the energy contained in grasshopper.
This is a representation of energy levels and distribution in a food chain in an Ecosystem. When a group of organism represent the same level in a food chain, in an ecosystem ,this is trophic level. Food chain represent a linear representation of nutrients and therefore energy distributions in an ecosystem.
Basically, in an ecosystem, there is always reduction in energy transfer from one trophic level to another by 10%. This is because, as the energy is transferred from the producer (green plants) to the primary consumer, the hopper, only 10% of the available energy will pass through to the hopper because 90% of the energy will be used by the green plants for metabolic and other physiologic activities. As this is transferred to the next trophic level, the Frog, this will be reduced (for the same reasons) so that 10% of the energy received by the grasshopper is transferred to the frog.
Practically, if 100,000Kcal of energy was obtained by hopper from the primary producer,10,000kcal(10%) of 100,000 will be transferred to frog.
This 10% occurs at each trophic levels.
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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:
What did Allan Savory notice about the lands grazed by wild animals at the Africa Centre for Holistic Management
Answer:
Allan Savory noticed that grasslands co-evolved with large numbers of migrating ruminants, and therefore are co-dependent on each other's survival. These animals grouped together and constantly bunched due to the predator-prey connection, eat the grasses following the seasons throughout their migration in arid regions (Brittleness scale, of Non-Brittle to Brittle environments).
As they move, they drop nutrient-rich dung and urine, while trampling organic litter (live or dead grasses, leaves, etc) and seeds into the soil. These actions break down materials into the surface, providing more covered soil and keeping materials from chemically decomposing (oxidation, as opposed to the fast biological decomposition that occurs in areas with consistent rainfall(Non-Brittle)). The true testament to his insights of Holistic Management re: grasslands is known as the 4th Key Insight: That time, rather than numbers governs over-grazing or over-trampling.
The important component here is that the time exposed to these animals plays the significant role in whether you have healthy grasslands, not the number of animals exposed to the area of consideration. The amount of "rest" (time) for grasses between eating or trampling is just as crucial as the time in an exposure.
Explanation:
Explained in his book and courses under "Holistic Management", by Allan Savory and Jody Butterfield, and Sam Bingham
the movement of water into the atmosphere from plants is
Answer:
Transpiration
Explanation:
Process through which plants lose water into the atmosphere
Answer:
Transpiration
Explanation:
The process by which water moves into the atmosphere from plants is transpiration
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.
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hllo baby
good night
Answer:
Okay
Explanation:
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.
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.
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