Answer:
Natural selection
Explanation:
According to Darwin's theory, natural selection is the process by which individuals better adapted to their environments have more chances to survive and reproduce, and thereby their descendants will be better represented in the next generation. This mechanism exploits the existence of natural variation among members in the population which is used to select those individuals that are better adapted (i.e., with a higher adaptive fitness) for their environments. Natural selection is a key mechanism of evolution by which species change across time.
• How the knowledge of classification be applied to assess the characteristics of different organisms when visit to zoo, herbaria or gardens.(Students may do research on internet to answer this question )
plz correct answer
be quick
Answer:
Compare two organism on the physical features and mode of nutrition.
Explanation:
Organisms are classified in groups and sub-groups on the basis of similarities and differences. so in order to compare two organisms, start with the similarities that are present between them. If similarities are more so they belong to the same group or if differences are more than both are placed in different groups. for classification, see the physical appearance of organism, mode of nutrition and habitat etc. If organisms are identical, they belong to the same species, if one or two characters are different so their genus will be same but specie is different. In zoo animals are different from the animals which is present in garden so compare the physical features of zoo and garden animals.
Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don't they explode? They don'Ât drink any water because they get so much from osmosis. They have adapted to live with high osmotic pressure. They urinate a lot, so the water does not build up. Their cells have adapted to absorb salt. All of the above
Answer:
They urinate a lot, so the water does not build up.
Explanation:
Freshwater fishes are fishes that live in freshwater habitat i.e. little or no salt. This means that the fishes are hypertonic (have more salt) to their external environment. Due to their hypertonicity, freshwater fishes tend to take in more water via osmosis.
Freshwater fishes, however, do not explode despite this phenomenon because they pass out the excess water via urine waste. Freshwater fishes urinate a lot, hence, the absorbed water does not build up in their bodies.
Which of these is NOT an example of biting and chewing insect?
(A)
Locust
(B) Grasshopper
(C)
Aphid
(D) Termite
(E)
Answer:
C aphid is the answer for that question
Answer:
yes
Explanation:
Which effects are factors in long-term climate change? Check all that apply.
Answer:
Earth's orbit around the Sun . Right
ice forming on a lake . Wrong
solar energy . Right
volcanic eruptions. Right
thunderstorms. Wrong
Explanation:
Here is a easy question summary the Interphase, prophase metaphase, anaphase and telophase step by step for each of the phase
Answer:
Interphase:
The DNA is present as uncondensed chromatin, which is not visible under a microscope. The DNA is contained within a clearly defined nucleus . Centrosomes and other organelles have been duplicated , and the cell is enlarged in preparation for division .
Prophase:
The DNA supercoils and chromosomes condense, becoming visible under a microscope). The chromosomes are comprised of genetically identical sister chromatids, which are joined at a centromere). Paired centrosomes then move to the opposite poles of the cell and form microtubule spindle fibers , the nuclear membrane breaks down, and the nucleus dissolves .
Metaphase:
The microtubule spindle fibers from both centrosomes connect to the centromere of each chromosome , microtubule depolymerisation causes spindle fibers to shorten in length and contract , causing chromosomes to align along the center of the cell.
Anaphase:
The continued contraction of the spindle fibers cause genetically identical sister chromatids to separate . Once the chromatids separate, they are individual chromosomes. The genetically identical chromosomes move to the opposite poles of the cell .
Telophase:
Once the two chromosome sets arrive at the poles, spindle fibers dissolve and chromosomes decondense, becoming invisible under light microscopes. Nuclear membranes reform around each chromosome set , and cytokinesis occurs concurrently, splitting the cell into two separate cells.
do foxes hunt alone yes or no.
yes. but occasionally they meet up with their packs during the night
Answer:
yes they hardley ever travel in packs
what type of cash crops have been genetically modified..... please help!!!!!
Answer:
Most food modifications have primarily focused on cash crops in high demand by farmers such as soybean, corn, canola, and cotton. Genetically modified crops have been engineered for resistance to pathogens and herbicides and for better nutrient profiles.
Explanation:
Select all that apply.
Which conditions relate to the research of van Helmont?
plant mass related only to soil
conclusions partly correct
demonstrated plant food from soil
conducted around 1400 AD.
plant mass related to H 20
Answer:
I'd say the best Answer is A & C
Explanation:
4. What happens when an enzyme is denatured? I
Answer:
in the air
Explanation:
poop
An ecologist samples the abundance of various species along an environmental gradient and fails to find clusters of species. Instead, peaks of abundance of dominant species are merely randomly spaced segments along a continuum. This distribution of species supports the
Answer:
This distribution of species supports Gleason´s Individualistic concept of a community.
Explanation:
This theory was proposed by Gleason and it states that plant species respond individually to environmental factors that continuously change at spatial and temporal levels. This means that the combination and distribution of plants in a certain point or area are unique because each vegetable species has a different distribution pattern and a different tolerance and abundance rate. Hence each species´ response curve to a certain gradient has its own shape and size and it different from other species curves.
Plants assembly growing in an area is the result of environmental conditions and migration rate of species. As every area is continuously getting propagules of different species, the survival success of each plant depends not only in environmental factors, but also depends on the tolerance to other new species and their interactions. This combination along a gradient always results in different composition and abundance of species. This is why a sample can not be confined to a clearly defined vegetable community.
This point of view is known as individualistic or continuum concept of vegetable community. Gleason believed that vegetable species were distributed as a continuum and that communities can not be identified as combinations of associated species that repeat in space.
Which of the traits below are completely influenced by the expression of genes? (Choose all that apply)
weight
attached or unattached earlobes
hair texture
eye color
Answer:
attached or unattached ear lobes
Which statement explains how a DNA mutation causes sickle-cell anemia?(1 point)
Answer:
DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape
Explanation:
Sickle cell mutation is a mutation that affect the production of red blood cell that is needed for the transport of oxygen in the bloods stream.
sickle cell mutation is a result of change in the amino acid which are building blocks of the protein hemoglobin.
The protein is what gives red cells their color, it has two subunits. The alpha
and beta subunit. There is a change in the arrangements of amino acid sequence and that is the basis for the sickle cell shape, beta subunit has valine an amino acid at position 6 instead of the glutamic acid. This alteration results in sickle cell problems that occur in people.
Answer:
Explanation:
From the options:
The DNA mutation increases the number of amino acids in hemoglobin, which causes a change in the shape of red blood cells.
The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells.
The DNA mutation decreases the number of amino acids in hemoglobin, which causes a change in the shape of red blood cells.
O The DNA mutation prevents formation of hemoglobin, the absence of wirich causes a change in the shape of red blood cells.
The correct answer would be that "The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells. "
The sickle-cell anemia is caused by a change in the amino acid sequence of the hemoglobin - specifically, as a result of the substitution of the sixth amino acid, glutamic acid, by valine in the beta subunit of the proteins that make up the hemoglobin. A single base substitution causes glutamic acid to be changed to valine.
The normal hemoglobin is disc-shaped and is able to effectively carry oxygen in the blood, unlike the sickle-cell hemoglobin which has the sickle shape and is not able to effectively carry oxygen in the blood.
Eye color is an example of 1. Transcriptional control 2. gene expression 3. translational control 4. gene regulation
Eye color is an example of Gene expression
What is most similar about the alkaline earth metals?
Answer:
They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure
how does quartz watch give time?
quartz gives time by, oscillator in which vibrates quickly and precise frequency In around 32,768 times-second in response to the electronic charge.
Plz help me ASAP TwT
Answer:
Response
Explanation:
It is response because your pupils are responding to the light flashing in your eyes and therefore they get smaller.
Hope this helps :)
Answer:
Response
Explanation:
We can use process of elimination. Reproduction does not fit in this context--nothing is reproducing. Nothing is growing, either. Development usually refers to when an organism develops, which doesn't fit this context either. Response is the only one that fits--your pupils are responding to the sudden light.
where are genes located in a prokaryotes cell?
Need help write some for me to put in my book
Answer:
Users encounter the error message ‘The Third-party INF doesn’t contain Digital Signature Information’ when they are trying to install third-party drivers on their computer. There are usually two types of drivers present i.e. third-party (these are not developed by manufacturers) and official drivers
please give the correct answer to this question
Answer: Lymphatic system
Explanation:
Not respiratory and excretory for sure.
Not nervous because the diagram doesn't show spinal nerves clearly. So its lymphatic system.
:-)
Before working at the hospital, Beth was given a Mantoux skin test to detect tuberculosis. If it were positive, the site of the test would become hardened and red. What type of response is this?
The options are missing from the question,the missing options are;
a. Anaphylactic
b. Histamine
c. Immediate allergic
d. Delayed allergic
e. B-cell mediated.
The correct answer to the question is option D
DELAYED ALLERGIC.
Delayed allergic response is a type of late response to antigen that occurs 48-72hours after exposure to an antigen.
This type of allergic response is mediated by T-cells and macrophages.
They are otherwise known as delayed hypersensitivity response/reaction.
The response is delayed because there is sensitization upon first exposure to the antigen, therefore if there is a re-exposure,a secondary cellular response is initiated triggering the actions of the already sensitized T-cells and macrophages.
Based on your knowledge of our solar
system, how do you think it originally
formed?
Answer:
Our sun oriented framework shaped almost 4.5 billion a long time back from a thick cloud of interstellar gas and tidy. The cloud collapsed, conceivably due to the shockwave of a adjacent detonating star, called a supernova. When this tidy cloud collapsed, it shaped a sun oriented nebula—a turning, twirling disk of fabric.
What is the role of Langerhans cells? prevent pathogens from entering the body using antibacterial agents destroy pathogens that enter the body using white blood cells identify pathogens that enter the body and carry them to lymph nodes for destruction
The role of Langerhans cells is that they prevent pathogens from entering the body using antibacterial agents.
What are Langerhans cells?Langerhans cell is a dendritic cell of the skin and mucosa, containing Birbeck granules, and present in all layers of the epidermis but most prominent in the stratum spinosum.
Langerhans cells play important roles in the immune system by acting as the outermost guard of the cutaneous immune system where they induce the first reactions against pathogens encountered via the skin.
Therefore, the role of Langerhans cells is that they prevent pathogens from entering the body using antibacterial agents.
Learn more about Langerhans cells at: https://brainly.com/question/15660598
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Answer: 3.identify pathogens that enter the body and carry them to lymph nodes for destruction
Explanation:
Superficial similarities in structures that have the same function can seem like they are evidence of a common ancestor, but they are not. An example of this is the convergent evolution of wings in insects as well as in birds. What are these types of structures called
Answer:
Distinguishing between Similar Traits
Similar traits can be either homologous structures that share an embryonic origin or analogous structures that share a function.
LEARNING OBJECTIVES
Explain the difference between homologous and analogous structures
KEY TAKEAWAYSKey PointsOrganisms may be very closely related, even though they look quite different, due to a minor genetic change that caused a major morphological difference.Unrelated organisms may appear very similar because both organisms developed common adaptations that evolved within similar environmental conditions.To determine the phylogeny of an organism, scientists must determine whether a similarity is homologous or analogous.The advancement of DNA technology, the area of molecular systematics, describes the use of information on the molecular level, including DNA analysis.Key Termsanalogous: when similar similar physical features occur in organisms because of environmental constraints and not due to a close evolutionary relationshiphomologous: when similar physical features and genomes stem from developmental similarities that are based on evolutionphylogeny: the evolutionary history of an organismmolecular systematics: molecular phylogenetics is the analysis of hereditary molecular differences, mainly in DNA sequences, to gain information on an organism’s evolutionary relationships
who discovered micro organisms
Robert Hooke is the person that discovered Micro organism
Answer:
An English architect, "Robert Hooke" discovered micro organisms in 1665.
Hope this helped!
Have a nice day:)
BRAINLIEST would really help me:)
Please help! Show work please!
Answer:
7. 18m = 1800 cm = 18×10² cm
8. 23 dm = 0.23 hm
9. 5 cm = 50 mm
10. 5.3 hL = 530000 mL
11. 167 mm = 0.167 m
12. 1.589 daL = 158.9 dL
13. 35.45 mg = 0.0003545 hg
14. 43 dam = 4300 dm
15. 500 kg = 500000 g
16. 700mL = 0.0007 KL
17. 130 dag = 1.3 kg
18. 59.932 mm = 59.932 × 10 –⁵ km = 59.932 × 10^–5 km
* Note; 1 m —> 100 cm1 dm —> 0.001 hm1 cm —> 10 mm1 hL —> 100000 mL = 10⁵ mL1mm —> 0.001 m1 dal —> 100 dL1 mg —> 0.00001 hg = 10^–5 hg1 dam—> 100 dm1 kg —> 1000 g1 mL —> 0.000001 kL = 10^–61 dag —> 0.01 kg1 mm —> 0.00001 km = 10^–5 kmI hope I helped you^_^
The following specimens/slides were shown to the students: mushroom, moss, earthworm, volvox, bacteria. The teacher asked them to classify them into the five kingdoms.
Answer:
Mushroom-Kingdom Fungi
Moss-Kingdom Plantae
Earthworm-Kingdom Animalia
Volvox-Kingdom Protista
Bacteria-Kingdom Monera
Explanation:
The classification of the organisms into five kingdoms is as follows:
Mushroom- Kingdom FungiMoss- Kingdom PlantaeEarthworm- Kingdom AnimaliaVolvox- Kingdom ProtistaBacteria- Kingdom MoneraWhat is classification?Classification is distributing the organisms into different groups according to their similar characteristics. The five kingdom classification is the approved form of classification today.
The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia, and the organisms are distributed in these kingdoms.
Thus, the classification is following:
Mushroom- Kingdom FungiMoss- Kingdom PlantaeEarthworm- Kingdom AnimaliaVolvox- Kingdom ProtistaBacteria- Kingdom MoneraLearn more about classification, here:
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Which observation led Mendel to the idea that traits were controlled by more than a single factor? Crossing two purple-flowered pea plants always resulted in a purple-flowered pea plant. Crossing two white-flowered pea plants always resulted in a white-flowered pea plant. A trait that was not seen in the first generation may later reappear in the second generation. A trait that was not seen in the first generation was completely gone and never reappeared.
Answer:
The answer is option C.
Explanation:
Genetic traits are expressed by dominant and recessive genes, which show up in the phenotype according to their presence on the chromosomes.
Observing a trait that was not present in the previous generations suggests that this trait is recessive and did not have the chance to appear in the other generations before. This idea has led Mendel to the idea that traits were not controlled by only a single factor. So the answer is C.
I hope this answer helps.
Answer:
A trait that was not seen in the first generation may later reappear in the second generation.
Explanation:
Glycolysis and gluconeogenesis are opposing pathways in that they begin or end with the same metabolites and share common intermediates and/or enzymes. Yet, for energetic reasons, the two processes cannot be the exact reverse of each other. How is this possible
Answer:
Due to difference in their products.
Explanation:
Glycolysis and gluconeogenesis are not exact reverse to each other because in glycolysis, glucose is converted into pyruvate, adenosine triphosphate (ATP), NADH, protons i.e. hydrogen ions and water whereas in gluconeogenesis, pyruvate is converted into glucose and glycogen. So due to the formation of different products of each process we can say that glycolysis is not exact reverse of gluconeogenesis.
Which of the following is NOT an organ system in the human body?
A. Endocrine system
B. Replicatory system
C. Digestive system
D. Lymphatic system
what is homostatis in biology
Answer:
Homeostasis, from the Greek words for "same" and "steady," refers to any process that living things use to actively maintain fairly stable conditions necessary for survival. The term was coined in 1930 by the physician Walter Cannon.
Explanation: