Answer:
Darwin proposed the theory of natural selection to explain the process of evolution. According to Darwin’s theory of natural selection, all organisms have the potential to reproduce limitlessly irrespective of the fact that each species maintain a constant density over time. However, the struggle for existence, i.e. the competition among individuals for available resources to survive and reproduce, put a check on species density (D) and maintains it at a constant level (B). Survival of fittest is unequal ability of individuals to survive and reproduce based on suitability of their inherited characters to prevailing environmental conditions (A). It imparts the reproductive advantage to certain organisms which account for major part of the gene pool of the species. Thus, natural selection favors the individual with survival and/or reproductive advantage over others under existing environmental condition (E). Thus, the correct answer is option C.
Enzymes tend to not work in extremely hot temperature because?
A) they evaporate into the air
B) the substrates become denatured
C) the enzyme becomes denatured
D) both b and c
Answer:
C
Explanation:
what is one way that energy is transferred within an Earth system.
three different ways are convection, conduction, and radiation
Where do plants get the nitrogen they need to create amino acids and DNA?
Answer:Assimilation - This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll.
Explanation:
What is Kingdom Monera?
Answer:
Monerais a kingdom that contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria.They are single-celled organisms with no true nuclear membrane (prokaryotic organisms).
Explanation:
Don’t mind the answer I put. Pls help
Answer:
Hemoglobin, or red blood cells, are primarily transporters of oxygen. These cells receive oxygen as air is breathed in through the lungs. Oxygen binds itself to these cells, which then carry it to the heart. The heart circulates the oxygenated blood to cells throughout the body in the process of cellular respiration.
Explanation:
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how the structures of the different chambers and vessels of the heart relate to their functions.
Answer:
Explanation:
The heart can be found at the center of the chest, underneath the sternum in a thoracic compartment. It is made up of four chambers and several valves that regulate the normal flow of blood within the body.
Two chambers called atria are located in the upper portion of the heart and receive oxygen-free blood. The valves that separate these chambers are called atrioventricular valves which is composed of the tricuspid valve on the left and the mitral valve on the right.
On the other hand, ventricles are chambers found on the lower portion of the heart; they pump oxygen-enriched blood into all organs of the body, reaching even the smallest cells. Similar to the atria, the ventricular chambers are also separated by valves. Collectively-termed as semilunar valves, these are comprised of the pulmonary and aortic valve.
The heart also has a wall that is composed of three layers: the outer layer epicardium (thin layer), the middle layer myocardium (thick layer), and the innermost layer endocardium (thin layer). The myocardium is think because it is made up of cardiac muscle fibers.
The structure of the heart is made more complex because of the mechanisms that allow blood to be distributed throughout the body and to return into the heart. Facilitating this continuous process are two types of blood vessels: veins and arteries (16jacktwinwritters). The vessels that bring oxygen-free blood back into the heart are called veins; those that bring oxygen-rich blood away from the heart and to other body parts are called arteries. Functioning in the left ventricle, the largest artery is called aorta. The aorta is considered a main artery in the body. It further splits into two smaller arteries called common iliac arteries.
With regular functioning, the heart is continuously able to supply sufficient amount of oxygen to all parts of the body.
Dry matters is made up of organic matter and?
The offspring of a particular cross are 100 percent heterozygous for the trait of plant height. What were the most likely genotypes of the parents? Tt ´ tt Tt ´ Tt tt ´ tt TT ´ tt
Answer:
TT x tt
Explanation:
If the offspring of a particular cross are 100 percent heterozygous for the trait of plant height. the most likely genotypes of the parents is TT and tt.
HETEROZYGOUS:Heterozygosity is a condition in which the genotype of an individual consists of two different alleles of a gene.
According to this question, a gene coding for plant height is involved. The tall allele (T) is dominant over the short allele (t).
This means a heterozygous offspring will have the following genotype: Tt. This genotype will only arise totally i.e. 100% in the offsprings if the parents are both homzygous for the trait i.e. TT and tt.
Learn more about heterozygosity at: https://brainly.com/question/10261919
In a paramecium, the nucleus divides first and then the cytoplasm divides, forming two identical daughter cells. Which type of reproduction takes place in paramecia?
Answer:
This type of reproduction is called binary fission.
Explanation:
Binary fission is a type of reproduction in paramecium that involves producing two identical daughter cells from one mother cell. These daughter cells are called clones, and are not genetically distinct from their progenitor. No genetic exchange is involved and they are genetically indequingishable.
The resulting DNA is identical to the original copy and newly copied chromosomes separate into two identical daughter cells with the same chromosome number. All offspring remain identical.
Hydrogen + Chlorine Dot Structur
PLEASE HELP
explain how a gis can model the ways that changes in climate can influence human activity
Answer: a Gis helps locate areas where temperatures are high or erratic in comparison to global averages which can help show global warming as well
GIS aids in the identifying the places where temperatures are unusually high or irregular and influences human activity about changes in climate.
What is GIS?"A Geographic Information System (GIS) is a computer program that analyses and displays information that is geographically referenced." It uses data which it gets from the device that have enabled its location.A GIS helps us in gaining a scientific understanding of earth systems on a large scale, allowing us to make more careful and calculated decisions.What is climate?"The long-term weather pattern in a certain location is referred to as climate."Long-term shifts in temperature and weather patterns are referred to as climate change.Hence, GIS tells about the prevailing climatic condition of an area.
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How is genetic variation passed to offspring?
Answer: through somatic cells or inherited through the germaine.
Explanation: My best guess
Please help! ASAP AND THANK YOU!
Answer:
C
Explanation:
it is because the source of the energy is the stove's burner, and it is not from the cooking pot. The cooking pot only absorb the heat from the stove's burner to make sure the vegetables is well-cooked
Cellulose is a type of
A. protein
B. carbohydrate
C. grass
D. lipid
B Because Cellulose is a polysaccharide consisting of linear chain of numerous linked D-glucose units whereas proteins are formed of number of amino acids linked together by peptide linkage.
Cellulose is a polysaccharide and a structural component of the plant cell. It is a carbohydrate made of many monomers linked together. Thus, B is the correct option.
What is cellulose?Cellulose is an organic chemical that is insoluble in water and is a tough structure classified as carbohydrates. Cellulose is a structural component of plant cells.
It is made by monomer units linked by the beta-1,4 glycosidic bonds and is a biodegradable, tasteless organic compound with the chemical formula (C₆H₁₀O₅)ₙ.
It is the main component of the plant cell wall that provides support and shape due to its fibrous structure. It is made of linear chains of D-glucose units that makes the polysaccharide.
Therefore, option B. cellulose is a carbohydrate.
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help(again)! will mark brainliest!
Answer: energy
Explanation:
7. What is pollen? *
The reproductive cells of an animal
The reproductive cells of vertebrates
The reproductive cells of plants
None of the above.
Answer:
The reproductive cells of plants
What is the form of fibronectin produced by liver cells and where is it found in the body ?
Answer: Fibronectin exists as a protein dimer formed of two monomers linked by a pair of disulfide bonds. Soluble and insoluble types of fibronectin exist. The soluble form is found in the blood, participates in wound healing processes, and is produced by hepatocytes.
Explanation: I have an a+ in biology however if this doesn't work I am very sorry
❤
What is the most important topographic feature of the ocean floor? Why?
Answer:
hi
Explanation:
The important features are the extensive continental shelves less than 250 m deep (pink); the vast deep ocean plains between 4,000 and 6,000 m deep (light and dark blue); the mid-Atlantic ridge, in many areas shallower than 3,000 m; and the deep ocean trench north of Puerto Rico (8,600 m).
The organelle responsible for cellular respiration is the:
a) Mitochondrion
b) Chloroplast
c) Lysosome
d) Nucleus
Answer:
A. Mitochondrion
Explanation:
The enzymatic reactions of cellular respiration begin in the cytoplasm, but most of the reactions occur in the mitochondria. Cellular respiration occurs in the double-membrane organelle called the mitochondrion.
Answer: a) mitochondrion
Explanation:
Cellular respiration occurs in the double membrane organelle called mitochondrion
Mitosis is responsible for growth, repair, and maintenance in an organism because
A. it occurs at a faster rate than meiosis
B. The chromosomes number is reduced by half
C. exact duplicates of each mother cell are produced
D. it is the only process involves replication of genetic material
Mitosis is responsible for growth, repair and maintenance of an organism because it produces all the daughter cells that are genetically identical to one other and therefore creates new available cells that are specific to each tissue for growth and repair.
Hope this helps! Please correct me if I'm wrong!
Which of the following statements regarding the moon is correct
Answer:
it in the sky at night and it orbits around earth
Answer: The moon's surface exhibits volcanic activity.
Explanation:
I need help!!!!!
Explain why the hormone produced by the endocrine gland will not communicate with the non target cell
Which effects would many organisms likely experience if global warming occours check all that apply
Disrupted food webs
Increased competition
Increased number of glaciers
Disrupted life cycle events
Forced relocation
Answer:
A. disrupted food webs B. increased competition D. disrupted life-cycle events E. forced relocation
The products of cellular respiration are of photosynthesis 0 products O unrelated O reactants O depends on the process
Answer:
reactantsExplanation:
Respiration is a catabolic process that releases energy from chemical bonds within carbohydrates. It occurs in mitochondria for aerobic processes, and produces carbon dioxide and water, and uses O2 and glucose as reactants...
C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP
Photosynthesis is a form of biosynthesis in producers such as plants, bacteria and fungi- they convert solar energy into stable chemical energy. The process uses the products of respiration in biosynthesis...
6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
The reactions are cyclic- they feed into each other.
One pesticide, called was popular for killing mosquitoes that
carried the deadly disease malaria. (3 Letters)
Answer:
DDT (dichloro-diphenyl-trichloroethane) was developed as the first of the modern synthetic insecticides in the 1940s. It was initially used with great effect to combat malaria, typhus, and the other insect-borne human diseases among both military and civilian populations.
Explanation:
Brainliest please?
2. (a) Read through the following passage about mitosis and then complete
it by writing the most appropriate word or words in the spaces.
In flowering plants the process of mitosis is restricted to the apical
and to
In growing mammals
mitosis can occur throughout the body.
However, not all regions of the young mammal grow at the same
rate and this is called
growth.
In the cell cycle, replication of DNA occurs in the..
.............phase,
after which there is a lag or gap phase, called the
phase,
before actual mitosis starts. The chromosomes also replicate before the
onset of mitosis, but this replication is not visible until the middle of the
. stage.
At this stage, each chromosome consists of two
..held
together by a
Answer:
This question is incomplete
Explanation:
This question is incomplete but there are some general facts that can be made.
Firstly, mitosis only occurs in meristematic tissue of plants which includes apical and lateral meristems
There are 4 phases in a cell cycle
1) G1 (gap 1) phase: This is the first phase of the cell cycle that has to do with an increase in the size of the cell. Major cellular components duplicate in size here.
2) S-phase: DNA replication occurs here.
3) G2 (gap 2) phase: This is the gap phase that comes after the S-phase. The cell undergoes further growth here and the organelles of the cells are also prepared for cell division.
4) Mitotic phase: There are four stages here
i) prophase: Chromosome condenses and becomes visible at this stage. And there is the emergence of spindle fibre from centrosomes.
ii) metaphase: Spindle fibre develops and sister chromatids are attached to
separate spindle.
iii) anaphase: Cohesin, which holds two sister chromatids (of chromosomes) together, breaks down and are pulled towards opposite poles.
iv) telophase: Chromosomes begins to decondense at opposite poles and actual cell division starts as mitotic spindle breaks down.
NOTE: All possible answers to the question are underlined
where does glycolysis and krebs cycle take place in the cell
Answer:
In most animal cells, glycolysis takes place in the cytoplasm and the krebs cycle takes place in the mitochondria.
Hope this helps
Answer:
glycolysis occurs in the cytoplasm while krebs cycle occurs in the mitochondria
Explanation:
NEED HELP PLEASE ALOT OF POINTS
6. Use the following terms to complete the statement: resilient, resistant If an ecosystem is _____________ was just still working can you check where she is copypasta hi Gigi what asked you i like, it is generally stable unless drastically changed by a disturbance. When a The disturbance causes a change, the ecosystem quickly recovers when it is _____________
Explanation:
Resistant means it can withstand changes, so I suppose the 1st blank
Resilient means it can recover quickly, so the 2nd blank
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Which macromolecule is known to be hydrophobic?
Carbohydrates
Lipids
Proteins
Nucleic Acids
PLEASE HELP ME I WILL MARK BRAINLY IF CORRECT!!!!
A student rests his right ear against his desk while a
teacher taps lightly on the desk. The student can hear the
tapping sound only through his right ear. When he lifts his
head away from the desk, he hears nothing.
What is the medium of the sound waves the student hears?
A. The air
B. The student
C. The desk
D. The teacher
Answer:
The desk
Explanation:
the desk is the answer because the sound wave is propagating through the solid bench.
Hope this is right.,,