what is an accessory organ of the plant used in sexual reproduction
Fossil evidence indicates that the first organisms on Earth were single-called prokaryotes. The first eukaryotes are believed to have formed from these prokaryotes. How does the endosymbiotic theory explain the development of the first eukaryotic organisms?.
The study of fossils shows that the eukaryotic cells have been evolved from the prokaryotic cells. The endosymbiotic theory has been used to study the evolution of eukaryotic cells.
The endosymbiotic theory states that:
Endosymbiotic theory is also referred to as the theory of symbiogenesis. The theory explains the evolution of eukaryotic cells from prokaryotic cells. The theory explains the presence of chloroplasts and mitochondria, and how these organelles form the eukaryotic cells. The theory explains the origin of mitochondria in animal cells and chloroplasts in plant cells.
Thus, the endosymbiotic theory defines the development of eukaryotic cells from the prokaryotic cells.
To know more about endosymbiotic theory, refer to the following link:
https://brainly.com/question/2957447
pls help this is due in monday this is a lot.....
Answer:
0 to around 35 shows that as the temperature increases the rate of enzyme activity also increases until a peak enzyme activity that occurs after 40 degrees this is enzymes optimum temperature. after this temperature enzyme activity decreases as the enzyme becomes denatured.
Mitosis maintains chromosomes in each {blank} while meiosis maintains chromosome number in the {blank}.
Answer:
Mitosis maintains chromosomes in each cell division constant, while meiosis maintains chromosome number in half
Explanation:
Mitosis maintains chromosomes in each daughter cell while meiosis maintains chromosome number in the gametes.
What is mitosis and meiosis?Mitosis is the process by which a cell divides into two identical daughter cells, each with the same number and type of chromosomes as the parent cell. During mitosis, the cell's DNA is replicated, and the replicated chromosomes are evenly distributed into the two daughter cells. This ensures that each daughter cell receives a complete set of chromosomes, maintaining chromosome number in the daughter cells.
Meiosis, on the other hand, is the process by which a cell divides into four non-identical daughter cells, known as gametes. During meiosis, the cell's DNA is replicated, and the replicated chromosomes are shuffled through a process called crossing over. This shuffling results in gametes with unique combinations of chromosomes, which helps to maintain chromosome number in the gametes. Gametes, also known as sex cells, are the cells involved in sexual reproduction, and they are important for maintaining chromosome number in offspring.
Learn more about cell division, here:
https://brainly.com/question/29773280
#SPJ2
What are the reactants in the equation for cellular respiration?
Group of answer choices
glucose and oxygen
water and glucose
oxygen and lactic acid
carbon dioxide and water
what conditions prompt hemoglobin to release oxygen? select the three answers that are correct.
The conditions that prompt hemoglobin to release oxygen are:
Decrease in pH (high acidity)ExerciseUnloading of oxygen from haemoglobinHaemoglobin is the blood protein that is used to carry oxygen in our body and gives blood its red colour. The ability of this protein to carry oxygen depends on some factor. These factors include:
Decreased pH: Upon the production of carbondioxide in the tissue cells, carbonic acid is produced which leads to decrease in pH of the blood. Exercise: During exercise, the temperature of muscle increases secondary to its utilisation. This will cause the release of unloading of oxygen from haemoglobin.Therefore, conditions that prompt hemoglobin to release oxygen are decrease in pH (high acidity) and exercise.
Learn more about haemoglobin here:
https://brainly.com/question/4326151
Where would you most likely find terrestrial communities with temperate deciduous forests?
Answer:
The correct answer is - C) Europe.
Explanation:
What is the effect of the biogeochemical cycles?
Answer:
The effect is to promote a cycling of the elements, ensuring that they are used and later available again. This is an extremely important factor, as some elements are essential for living beings, and their constant use, without replacement, could lead to the extinction of species.
Explanation:Biogeochemical cycles are processes that occur in nature to ensure the recycling of chemical elements in the environment. It is these cycles that enable the elements to interact with the environment and living beings, that is, they ensure that the element flows through the:
atmosphere hydrospherelithosphere biosphereThe main biogeochemical cycles found in nature are the:
watercarbonoxygen nitrogen cyclesthe answer is the effect of the biogeochemical cycle is it makes chemical elements reusable in nature.
Which of the following cognitive skills have not been displayed by animals? A. Using tools B. Forming concepts C. Transmitting culture D. Using syntax.
A cognitive skill which have not been displayed by animals is: D. Using syntax.
A cognitive skill is also referred to as cognitive ability and it can be defined as a brain-based skill that is required by a living organism for the manipulation of information, acquisition of knowledge, reasoning and performance of various tasks from the simplest to the most complex.
Some examples of the cognitive skills that have been displayed by animals include the following:
The use of tools.The transmission of culture.The formation of concepts.However, animals do not speak words or have a spoken language and as such they do not have the cognitive skill to use syntax.
Read more: https://brainly.com/question/18428487
Answer:
It’s D
Explanation:
On edge 2022
I need a paragraph explaining what dna and rna is
plssshelp fast
Answer:
DNA is the 33 chromosomes. RNA is the protein that exists in viruses... that's All what I know.
Answer:
don't cheat
Explanation:
do it yourself
which one of the following items would never appear on a cash budget? group of answer choices office salaries expense interest expense depreciation expense travel expense
Answer:
depreciation expense
Explanation:
A elephant cell has 20 chromosomes. how many chromosomes will the cell have just before mitosis begins in the elephant cell?
The elephant cell will have 20 chromosomes.
Cells undergo interphase before getting to the mitotic phase. At the S phase of the interphase, the amount of DNA in the cell is double by replication. However, the number of chromosomes remains intact.
Thus, the cell gets to the mitotic phase with the same number of chromosomes that is usually present in normal vegetative cells of the animal.
More about mitosis can be found here: https://brainly.com/question/13536882?referrer=searchResults
PLZZZZZZ HELLPPP
Bacteria commonly change ______ to a form that can then be easily assimilated by plant
Answer:
Bacteria commonly change nitrogen to a form that can then be easily assimilated by plant.
The amount of available ______ limits the number of trophic levels in a community. please help!!!
HELP!! what is the main reason that we continue to use fossil fuels for our electricty and transportation?
A)There are not enough dams in the US
B) Wind is to complicated to set up
C) Solar energy is limited
D) It is cheaper to use to fossil fuels then to invest in renewable energy technology
Answer:
D - It is cheaper to use fossil fuels than to invest in renewable energy technology.
Hope that helped. x
Which part of a cell is used by a virus to produce its protective protein coat?
A ribosome is the part of a cell is used by a virus to produce its protective
protein coat.
Virus produces a protective protein coat known as capsids which serves as
a means of protection for the organism. The capsids are produced through
the organelle known as ribosome.,
The ribosome acts as a site for protein synthesis in organisms and the
capsids being made up of protein means the ribosome was used to
produce its protective protein coat.
Read more about Virus on https://brainly.com/question/8773679
What is the function of tRNA?
A.catalyze the assembly of amino acids into a protein
B.carry genetic instructions for building a protein
C.bring an amino acid to the ribosome
Answer:
decode a messenger RNA (mRNA) sequence into a protein
Explanation:
tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule.
During fertilization, each haploid ____________ contains the entire genetic contribution from one of the two parents.
What are cells made of?
Answer:
All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.
Explanation:
In scientific inquiry, when competing hypotheses have been eliminated, a hypothesis may be elevated to the status of a scientific
Answer:
Scientific Theory
Explanation:
When ___________ pass through ATP synthase, ATP molecules are produced from ADP molecules.
The properties of water are the result of multiple factors including; polarity and hydrogen bonding. Which property of water is not a result of polarity?
A.Water dissolves salts and sugars.
B.Water will become less dense when frozen.
C.Water is transparent and lets sunlight pass through.
D.Water will from a spherical bead due to surface tension
Water is transparent and lets sunlight pass through. Therefore, the correct option is C.
Water's transparency and ability to pass through sunlight is not just a product of its polarity. This is mainly because water absorbs only specific wavelengths of light, particularly those in the visible spectrum, while allowing other wavelengths to pass through. Rather than being a direct result of polarity, this property is related to the electrical structure of water molecules and their interactions with light. On the other hand, the interplay of water polarity and hydrogen bonding is the reason for the A, B and D properties, respectively.
Therefore, the correct option is C.
Learn more about water, here:
https://brainly.com/question/28465561
#SPJ3
Fossil fuels are part of the c______ cycle.
Pls hurry with answer
On a weather map what does this symbol mean.
////
A. Cloud Cover
B. Cold Front
C. Showers
D. Warm front
Answer:
Showers
Explanation:
I watch the news and weather
The scientist was the first identify cells and name them
Answer: Robert Hokke.
Explanation: Robert Hokke in 1665, the cell has a rich and interesting history that has ultimately given way to many of today's scientific advancements.
Hope this answer will help you.
What kind of cell is this? *
Plant Cell
Animal Cell
Bacilli
or Cocci
Answer:
animal cell!
Explanation:
I will give 50 points PLEASE HURRY
Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network folder. Upload each file separately.
Answer:
thats only 5.
Explanation:
agnatha are what because they live off the blood of other fish
Answer:
They live off of the blood of another fish, they must have a host, so that makes these fish parasitic.
Explanation:
Which part of bone marrow is
fatty and acts as a place for
storage?
A. Red
B. Yellow
C. Pink
D. White
Answer: the answer is B
Explanation: Yellow bone marrow is involved in the storage of fats. The fats in yellow bone marrow are stored in cells called adipocytes.
True or false.plant cells will shrink when placed in concentrated salt solution
Answer:
True
Explanation:
Plasmolyd is the process that causes it to shrink