Answer:
Speciation is the process of formation of a new genetically independent group of organisms, called species, through the course of evolution. The process of splitting of genetically homogenous population into two or more populations that undergo genetic differentiation and eventual reproductive isolation is called speciation.
Answer:
Explanation:
Evolution is a natural phenomenon by which inheritable characteristics of a species change over generations. It mainly relies on processes such as natural selection, genetic drift, migration, and mutation. ... Isolation (geographical or reproductive) prevent the flow of genetic material between the populations.
Which option best defines half-life?
Answer:
Where are the answer choice
which is not an example of capillary actions ?
A. a paper towel absorbing a spill .
B. plant absorbing CO2 through Stomata .
C. a mop absorbing water from a puddle from the ground.
Help Asap!
Answer:
B
Explanation:
capillary actions are related with water movement. co2 is a gas absorbed.
Which statement describes only biotic factors in a forest ecosystem?
Answer:
A bird and a squirrel are living in a tree.
Explanation:
Competition for food is an example of a biotic factor in an ecosystem. A red squirrel and a grey squirrel living in the same habitat will compete for the same food source. 2. Predator-prey relationships are examples of biotic factors.
Mitochondrial DNA is passed directly from father to child
true or false
Niko was hiking in the mountains when he found a spring or a place where water naturally flows out of the ground. Where did the water in the spring come from?
A. It is water that was squeezed out of an igneous rock when the rock changed.
B. It is water that was produced by organisms living underground.
C. It is precipitation that fell on the ground and seeped down to a layer of rock.
D. It is water that condensed underground when the soil became colder during the winter.
C. It is precipitation that fell on the ground and seeped down to a layer of rock.
how do sandy beaches from????
Explanation:
waves pounding pebbles into smaller and smaller pieces
Answer:
The answer is D :)
Explanation: have a great day and be safe
Please help <3 Will give brainliest
Answer:
blood group
Explanation:
Tadpoles must undergo a major metamorphosis to become frogs. This change includes reabsorption of the tail, growth of limbs, calcification of the skeleton, increase in rhodopsin in the eye, development of lungs, change in hemoglobin structure, and reformation of the gut from the long gut of an herbivore to the short gut of a carnivore. Amazingly, all of these changes are induced by triiodothyronine. What is the most likely explanation for such a wide array of effects of triiodothyronine
Answer:
The most likely explanation is that different body parts have different tissues which in turn have different thyroxine receptors. This leads to different signal transduction pathways.
Explanation:
The triiodothyronine absorption through different tissues lead to different signal transduction pathways.
3.2 State whether each of the phrases applies to A only, B only,
both A and B or none. Write down A only, B only, both A and B
or 'none' next to the question number.
For example, 3.2.6 None
3.2.1 Mitosis
A cloning
B chromosomes
3.2.2 Chromosome
A chromatid
B spindle fibre
3.2.3 Phases in the cell cycle
A interphase
B mitosis
3.2.4 Tumour
A benign
B malignant
3.2.5 Bone cancer
A carcinoma
B leukaemia
Answer:
3.2.1. A only
3.2.2. A only
3.2.3. A and B
3.2.4. A and B
3.2.5. None
Explanation:
- 3.2.1
Mitosis is a kind of cellular division that produces two genetically identical daughter cells. Whereas, cloning is a technique used to create identical cells. This means that mitosis applies to cloning.
- 3.2.2
A chromatid is a half of a replicated chromosome. Together, a replicated chromosome is called SISTER CHROMATIDS. One of them is called a Chromatid. Spindle fibre is a structure involved with the division of the genetic material during cell division.
- 3.2.3
The cell cycle consists of two stages interphase and mitotic phase. Hence, interphase and mitosis are part of the cell cycle.
- 3.2.4
A tumour is a cancerous mass of cells. Tumour can either be BENIGN i.e. not capable of spreading to other parts or MALIGNANT i.e. capable of spreading to other parts.
- 3.2.5
Cancer is an uncontrolled division of cells and can occur in virtually all organs of the body. Bone cancer is a type of cancer that affects the bone cells. However, carcinoma (starts in the skin) and leukaemia (blood cancer) are unrelated to bone cancer.
A chromosomal mutation is best described as-
A. Mutations that involve changes in the number or structure of chromosomes in a cell or organism.
B. Changes in the “reading section” of a protein code frame that affect the subsequent amino acids.
C. An amino acid substitution that changes all of the subsequent protein codes on the chromosome.
D.a change in the genetic make-up of an organism that causes speciation to occur in a population.
Answer:
A
Explanation:
chromosomal mutation definition. A mutation involving a long segment of DNA. These mutations can involve deletions, insertions, or inversions of sections of DNA. In some cases, deleted sections may attach to other chromosomes, disrupting both the chromosomes that loses the DNA and the one that gains it.
The category of organisms in a water ecosystem that includes the larger,
active swimmers is called _____.
Answer:
The category of organisms in a water ecosystem that includes the larger,
active swimmers is called Nekton
What cycle is used to make fats and oils
Answer:
citric acid cycle
Explanation:
To give just one example, acetyl CoA (mentioned above) that's produced in cellular respiration can be diverted from the citric acid cycle and used to build the lipid cholesterol. Cholesterol forms the backbone of the steroid hormones in our bodies, such as testosterone and estrogens.
Are humans an example of a placental mammal? Justify
Answer: Humans, of course, are also placental mammals
Explanation: Placental mammals include such diverse forms. They are also some of the most familiar organisms to us, including pets such as dogs and cats, as well as many farm and work animals, such as sheep, cattle, and horses. Sense they are most familiar to us human beings are also placental mammals.
What colour does bicarbonate indicator change to in presence of oxygen and carbondioxide
Answer:yellow
Explanation:
Hydrogen bicarbonate is an indicator that is use to test the amount of carbondioxide and oxygen in the aquatic body. It's main color is red.
It normally turn to yellow when there is more carbondioxide present in the atmosphere of the water body. It turn yellow when respiration is much because carbondioxide is exhaled out.
Infer why base substitutions in the third position are least likely to cause a change in the amino acid for which it coded.
Answer:
Because of the codon oscillation.
Explanation:
The formation of codons is susceptible to the occurrence of oscillation, which is the term that corresponds to the fact that many codons have synonyms in the third position, that is, in the third letter. For example, the codon CUA, which represents leucine, will also represent leucine if it is presented in CUU, CUC and CUG forms, due to the oscillation in the third position. This allows the tRNA to recognize any of these codons and pair with the anticodon smoothly and without errors.
*10 POINTS* biologyyyy please helppp
Answer:
A, C, D
Explanation:
It is easier to look for which is wrong rather than checking all if they are right.
B is wrong because population A is growing exponentially and it can be inferred from the graph that it is nowhere near slowing down.
Organism A has blunt teeth, while organism B has sharp ones. Identify the organisms on basis of their feed habit and give another point of difference between these two organisms
Answer:
- Organism A is most likely a herbivore
- Organism B is most likey a carnivore
Explanation:
Based on feeding habit, organisms, usually animals, can be classified into three categories namely: herbivores, carnivores and omnivores.
- Herbivores are those organisms that feed on vegetative matter i.e. plants while carnivores are those organisms that feed on flesh of other animals or organisms. Based on what they feed on, herbivores are adapted to possess blunt teeth (for chewing) like Organism A in this question while carnivores are adapted to possess sharp teeth (for tearing flesh) like Organism B.
Based on the above explanation, organism A is most likely a HERBIVORE while organisms B is most likely a CARNIVORE.
- Another notable point of difference between herbivores and carnivores, which is likely to differentiate organism A and B as well, is that herbivores possess digestive enzyme- amylase in their saliva while carnivores do not. Herbivores need AMYLASE to break down complex carbohydrate (starch) in the plants they feed on.
B
Name the part of the the brain labeled "C".
A)
frontal lobe
B)
temporal lobe
C
parietal lobe
D)
medulla oblongata
Answer:
B- Temporal lobe
Explanation:
The temporal lobe is one of the four significant flaps of the cerebral cortex. It is the lower flap of the cortex, sitting near ear level inside the skull. The fleeting flap is generally liable for making and protecting both cognizant and long haul memory.
brainliest?
what is the function of the seed producing in mosses plants?
Explanation:
Ecologically, mosses break down exposed substrata, releasing nutrients for the use of more complex plants that succeed them. They also aid in soil erosion control by providing surface cover and absorbing water, and they are important in the nutrient and water economy of some vegetation types.
Chemicals that stay in the environment
for a long time are known as
A. unstable
B. reactive
C. persistent
D. corrosive
Answer:
Persistent item c
Which of the following is/are parts of the Cell Theory? explantion
Answer:
All organisms are composed of one or more cells. Cells come from other cells by division. Cells are the smallest living things. Eukaryotic cells have evolved from prokaryotic cells.
Explanation:
what is respiration and the different types
Answer:
It involves inhalation and exhalation of gases. Internal respiration involves gas exchange between the blood and body cells. Cellular respiration involves the conversion of food to energy. Aerobic respiration is a cellular respiration that requires oxygen while anaerobic respiration does not.
What’s the answer please??!!!
Answer:
A
Explanation:
Almost all embryos of vertabrites look the same at early embryo stages, even humans to other organisms. This is because they all have a common ancestory, adn orginated from a organism with an embryo that looked like this.
It is clear it cannot be the other answers for the folowing reasons:
The organisms will definatly not look the same, considering they are birds and reptiles. The 2nd answer speaking of geography isnt very accurate, and cannot be determined because as I said above, any vertibrate embro looks very similar, and close geopgraphy isnt what made them look similar.
Again, all vertabrites have the same embryos, and that is a phylum. Not a genus. There are many genus in a phylum, and the ecaxt one cannot be determines.
As I said above, HUMANS look simiar to BIRDS and REPTILES, but clearly grow to be much different.
Answer:
A: the organisms share a common ancestory
These thoughs and facts hopefully answer you question, hope it helps!
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Answer:
Reduction of fossil fuels.
Explanation:
A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion. Source: Wikipedia
Answer:
the answer would be a)
Explanation:
Please fill out the Punnett Square with the correct Alleles, then answer the questions.
Bb | bb
Bb | bb
The chance of having recessive traits is 50%
The chance of having dominant traits is 50%
Hope this helps ! :)
what is the function of the periwinkle leaf?
Answer:
periwinkle is used for “brain health” (increasing blood circulation in the brain, supporting brain metabolism, increasing mental productivity of leef
Galaxies that are moving away from earth are?
Answer:
The galaxies are moving away from Earth because the fabric of space itself is expanding. While galaxies themselves are on the move — the Andromeda Galaxy and the Milky Way, for example, are on a collision course — there is an overall phenomenon of redshift happening as the universe gets bigger.
Sorry someone flagged this
First to answer 15points plus brainliest!!!!
Nuclear Energy is produced by
Answer:
Fission or the act of splitting uranium atoms
Answer:
Nucler fission
Explanation:
Clearly C and D arent correct.
In nuclear fission(A), a uranium atom(mildly radioactive) is split by a nutreon, which realeases nucler energy.
In nucler fussion(B), which only occurs in the sun and stars, two nulcei are combined to make a even bigger nuclei, this does not produce nuclear energy.
Hope this helps :)
I think it’s tree am I right?
Answer:
mm yes tre.........
Explanation:
write the general characteristics of bryophytes?
Explanation:
Vascular tissues are absent.
-Sex organs are multicellular and jacketed.
-Archegonium is flask shaped with tubular neck and a swollen venter. ...
-Sexual reproduction is of oogamous type. .
-The sporophyte of sporogonium is parasitic over the gametopphyte.
Answer:
Plants occur in damp and shaded areas.
The plant body is thallus like, i.e. prostrate or erect. It is attached to the substratum by rhizoids, which are unicellular or multicellular. They have a root-like, stem-like and leaf-like structure and lack true vegetative structure.