What additional evidence
do we have today that
supports Darwin's theory?
A. Cell theory
B. DNA and molecular evidence
C. Process of photosynthesis
D. Method of protein synthesis
Answer: The answer is A cell theory.
Explanation: For our cells to be as developed and complex as they are today a huge evolutional process was necessary. This process is explained in the cell theory
DNA and molecular evidences are the additional evidences to support Darwin's theory. The correct option is B.
What is Darwin's theory?According to Darwin's theory, all species of organisms emerge and develop through natural selection of slight, inherited variations that significantly raise the individual's capacity to compete, stay alive, and reproduce.
It is backed up by research from a wide range of scientific disciplines, as well as genetics, which shows that DNA from different species is similar.
Fossils, embryological studies, anatomical and morphological characteristics, and molecular biology are examples of evidence that support the theory of evolution by comparing DNA sequences.
Thus, the correct option is B.
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What is the function of the mitochondria in a cell? (revision task)
Answer:
Mitochondrion functions as the "power house of the cell". It provides to the cell with most of the cell's energy. It converts food to "useful" energy so that it can be utilized by the cell.
Answer:
Mitochondria are filamentous, granular, cytoplasmic structures which are the site of cellular respiration and generation of ATP. It is also called powerhuose of a cell.
Functions of Mitochondria:They help in the synthesis of fatty acid and amino acid.They regulate calcium ion concentration inside the cell.They are the site of thermogenesis ( heat generation)Learn more on:
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11. Which of the following is not a cause of cell necrosis?
Infection
Blood clot
Injury
Perfusion
Infection, blood clot, and injury all are the causes of cell necrosis except perfusion. Thus, the correct option is D.
Cell Necrosis is the death of the cells which are present in the body tissues. While the dead body tissue can be removed, it cannot be brought back to the good health.
The necrotic tissue appears as white and friable cells, like the clumped cheese. Dead cells in the body disintegrate however are not completely digested by lysosomes, thus leaving granular particles. Microscopic examination of the dead cells show amorphous granular debris that is enclosed within a distinctive inflammatory border.
Cell Necrosis can occur due to different causes such as injury, infections or diseases. Lack of blood flow to body tissues and extreme environmental conditions.
Therefore, the correct option is D.
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The sun's mass
is very small compared to other stars
is very small compared to Earth
creates a very powerful gravitational force
o pulls the planets in orbit around Earth
Answer:
his answer is wrong it is "creates a very powerful gravitational force"
Explanation:
if anyone needs it in the future <3
What are villi and what makes them suited for their function?
Answer:
Villi are finger-like projections.They increase the surface area of inner walls and helps alot in absorption of digested food.
Explanation:
Do you know the answers, even just one?
Answer:
1.answer is B
Explanation:
it is help for you
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What is your hypothesis for the numbers of each phenotype after 32 fertilizations (HINT: Use a Punnett square to come up with the ratio and then determine how much of each if you have 32 individuals.)
Answer:
I need more clarification on what to use in the punnet square
Explanation:
Which endocrine gland is indicated by the arrow?
pineal gland
adrenal gland
hypothalamus
ovary
A human body with endocrine glands are shown. The glands on the kidneys are indicated by the arrow.
Answer:
its the adrenal gland B on ENG 2022
Explanation:
The glands on the kidneys are indicated by the arrow, and the gland is called the adrenal gland which is present in the second option, and there are two adrenal glands on the two kidneys of the human body.
What is the importance of the adrenal glands in humans?The adrenal glands are two small glands located on top of the two kidneys that play an important role in the endocrine system because they produce hormones that help regulate a variety of important functions, such as metabolism, immune system function, and the stress response by releasing hormones like adrenaline, cortisol, and epinephrine, etc, while adrenaline, is released in response to stress or danger, it increases heart rate, blood pressure, and glucose levels, preparing the body for stress.
Hence, the glands on the kidneys are indicated by the arrow, and the gland is called the adrenal gland, which is present in the second option, and there are two adrenal glands on the two kidneys of the human body.
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EASY QUESTION. WILL MARK BRAINLIEST.
What role does differential reproduction play in natural selection?
Some organisms have different reproductive success due to nongenetic traits.
Some organisms have traits that help them reach reproductive age.
Different methods of reproduction result in some organisms being genetically altered.
Reproduction varies among organisms due to pathogenic factors.
Answer:
Some organisms have traits that help them reach reproductive age.
Explanation:
Differential reproduction is the concept that during reproduction, organisms will vary and of those organisms, only those who have the proper adaptations will survive and reproduce. Natural selection is the concept that organisms will adapt to their environment and only those who make the proper adaptations will survive and reproduce. Differential reproduction is part of natural selection because only those organisms born with the right adaptations will survive long enough to reach reproductive age.
Answer:
Some organisms have traits that help them reach reproductive age.
Explanation:
I just took the test and it said this was right
Does crop rotation add nitrogen to the soil??
Answer:
Yes, during a process called nodulation.
Explanation:
Wildlife experts may attempt to restore the population of an individual species ?
by changing the food web of the ecosystem.
by moving the species to a rain forest.
through captive breeding.
by introducing an exotic species into the population.
Answer:
C
Explanation:
through captive breeding. Once they are breed, they should be released
What does Saccharomyces cerevisiae (Baker’s yeast) need to survive?
Answer:
Food (Sugars)
Explanation:
S. cerevisiae feeds on sugars for energy, in the process producing carbon dioxide and alcohol (this is fermentation in a nutshell). The carbon dioxide bubbles get trapped in the dough, creating the lift that makes the dough rise. The alcohol, meanwhile, evaporates when baking, transforming into gas that also contributes to the rise of the bread. The alcohol, along with acids produced during the fermentation process, impart that wonderful flavor and aroma associated with yeast-leavened breads.
What factor determines how much linoleic acid can twist and bend its shape?
A. The weight of the molecule
B. The number of carbon-hydrogen bonds
C. The length of the molecule
D. The number of carbon-carbon double bonds
9. Earth's crust and uppermost mantle form the
O lithosphere
O asthenosphere
O hydrosphere
O atmosphere
Answer:
lithosphere
Explanation:
The lithosphere is the outer part of the earth, consisting of the crust and uppermost mantle.
Answer:
Lithosphere
Explanation:
Earth's lithosphere. Earth's lithosphere includes the crust and the uppermost mantle, which constitutes the hard and rigid outer layer of the Earth. The uppermost part of the lithosphere that chemically reacts to the atmosphere, hydrosphere, and biosphere through the soil-forming process is called the pedosphere.
Have a good day and stay safe!
Sort the units based on the measurement system they're use in
Answer:
is there a picture of it?
What is the benefit of using a shortcut in a reaction between two chemicals? A shortcut would ensure a safer reaction. A shortcut may provide a faster reaction. A reaction with a shortcut would yield more chemical output. A reaction with a shortcut would require less chemical input.
Answer:
A shortcut may provide a faster reaction
Explanation:
Chemical reactions occur in a particular manner and speed if allowed to occur normally. However, shortcuts can be used for the essence of making the reaction proceed much faster than it naturally would. Catalysts are the substances used to provide these shortcuts.
A catalyst is a substance that increases the rate at which a chemical reaction occurs without being chemically used up in the reaction. A catalyst speedens up the chemical reaction by decreasing the activation energy. The activation energy is that energy needed for a chemical reaction to kick start. The higher the activation energy, the slower the reaction proceeds.
A catalyst, thus, creates a shortcut by lowering the activation energy of the chemical reaction, allowing it to proceed faster than when a catalyst is not used.
Answer:
B
Explanation:
Edge 2020
During the transmission of signals across a neuromuscular junction, which of the following happens first?
A. Acetylcholine binds to a receptor protein on the motor end plate
B. The sodium and potassium ion gates on the motor end plates open
C. Synaptic vesicies release acetylcholine molecules
D. Synaptic vesicles move toward the axon terminals
Answer:
D. Synaptic vesicles move toward the axon terminals.
This happens at first
Categorize the food items below by selecting which macromolecule they are known to contain.
apple
steak
celery
olive oil
potato
avocado
egg
Answer:
✔ carbohydrate
apple
✔ protein
steak
✔ carbohydrate
celery
✔ fat
olive oil
✔ carbohydrate
potato
✔ fat
avocado
✔ protein
egg
Explanation:
The apple, celery, and potato all contain the majority of the carbohydrates, the steak, egg, contain the majority of the protein; and the olive oil and the avocado both contain the fat.
What is the significance of carbohydrates and fats in the human body?These are the macromolecules, such as carbohydrates, which are the main part of the diet that is easily broken down to give rise to energy, and there are other sources of proteins and fats that perform the same functions. These foods are found in vegetables, fruits, nuts, and other foods and provide nourishment to the human body.
Hence, the apple, celery, and potato all contain the majority of the carbohydrates, the steak, egg, contain the majority of the protein; and the olive oil and the avocado both contain the fat.
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Study the image. Note that the sediment sizes are labeled A, B, and C. Which type of sediment will be deposited first? Which type of sediment will be deposited last?
Answer:
Sediment C and A
Explanation:
took test rn
Answer:
The first answer is C
The second answer is A
Explanation:
I did it on and got it correct
Identify characteristic of alcohol. a. It is a key ingredient in dietary supplements. b. It provides water but not calories. c. It enhances the repair of body tissues. d. It provides calories. e. It is an essential nutrient.
Reflect your understanding on : ‘Corona VIRUS ‘
Focus on:
a. Virus structure
b. Diseases caused with symptoms
c. Preventive measures
d. An account of global disaster caused.
Answer:
a. corona shaped( rounded with projections)
b. Lung failure and clot of blood.
c.- washing your hands after handling stuffs.
- using alcohol based sanitizers.
- taking in more fruits to boost immune system.
- ensuring social distancing.
d. - closedown if schools and institutions.
- general panic.
- fatalities (deaths).
Explanation:
Hope it helps.
All of the following are efforts to save a species close to extinction EXCEPT ? genetic preservation. fragmentation. captive-breeding programs. zoos and aquariums.
Answer:
fragmentation
Explanation:
Note-taking can be an effective study strategy if you:
a record everything verbatim.
b. use a laptop to take notes.
c. take notes by hand.
d. take notes only on your second read-through.
Answer:
c. take notes by hand
Hope this helps.
help with number 55!!!!! i appreciate it so much!!! and can you explain the processes so i actually understand:)))
Please if anyone could answer this question? Will mark brainliest!!
Explain the process of gaseous exchange in the alveoli of the lungs.
Answer: Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Answer:
carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation:
Which of these processes does not require the cell to use energy A cell division b protein synthesis c DNA replication D diffusion across a membrane
Answer:
D diffusion across a membrane
Explanation:
Based on whether or not energy input is required, there are two types of processes viz: passive and active. Passive processes are those that do not require energy input in form of ATP while active processes require energy input to occur.
An example of passive process is DIFFUSION, which is the movement of molecules from a region of high concentration to a region of low concentration across a membrane. Diffusion is passive i.e does not require energy, because movement occurs down a concentration gradient.
Other processes in the options like cell division, DNA replication and protein synthesis all require energy input to occur.
Genome editing is a group of technologies that enables scientists to edit an organism's DNA. One genetic editing technology is called CRISPR-Cas9, which was developed based on a naturally occurring genome editing system in bacteria. CRISPR-Cas9 uses a cell's own machinery to edit the genetic material; scientists can add or remove genetic sequences from an organism's genome. CRISPR-Cas9 can customize an organism's DNA by replacing an existing segment with a customized sequence of DNA. In 2018, a Chinese scientist announced that he had created the world's first genome-edited babies, twin girls born in November 2018. The scientist wanted to create children who were resistant to Human Immunodeficiency Virus (HIV). The Chinese scientist used CRISPR-Cas9 to disable a gene called CCR5, which encodes a protein that enables HIV to infect cells. This announcement caused outrage in the international scientific community. While genomic editing of bacteria and viruses is commonly used in science, genetic editing of humans remains highly controversial. Why do you think the news of this new use of CRISPR-Cas9 in humans generated so much anger in the research community and in the world at large? What are the dangers of genomic editing in humans?
Answer:
Explanation:
It generated anger because:
1) Human gene editing is highly controversial as humans are considered the "top" organisms and any tests conducted on humans whether it be clinical trials of medicine and such need to be approved and need to be ethical.
2) We are still years behind in terms of knowledge of genomic editing on animals and its side effects, and taking this in account, performing such editing with humans is obviously going to draw controversy as we do not know enough about genomic editing.
Dangers of editing in humans:
1) Although Crispr-Cas9 is highly accurate, it is still capable of making mistakes and we are still unsure about how those mistakes can affect the whole human. After all, the editing needs to be done in embryo for it to make a pronounced effect later in life on the grown human so any mistakes could ruin the new life of this human.
Gene editing is a technique that is used in research areas to modify genes of organisms for improving their function and to treat diseases.
Genome editing generated anger when used on Humans because:
Genome editing or any research based on humans as a subject is considered very controversial and have always created anger even in the case of clinical trials.Genome editing has been conducted on animals for years and the results and side effects are the reasons that the human specimens cannot be used for experimentation.Dangers of genome editing in humans:
The accuracy rate of gene editing is still not 100% and they are chances that unintended changes can occur during editing.These mistakes and errors can affect the human as a whole and will ruin its whole life.The possibility of getting cancers and getting vulnerable to biological attacks makes gene editing in humans a disadvantage.Thus, human gene editing is a controversial issue.
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3. Were you able to restore the land? Why or why not?
Answer:
yes yes I was
Explanation:
I invested with money for crops and bammo bingo land back!!!
What is the correct order of
evolution of the major types
of pants?
A. Non vascular, Gymnosperm,
Vascular seedless, Angiosperm
B. Vascular seedless, Non
vascular, Angiosperm,
Gymnosperm
C. Non vascular, Vascular
seedless, Gymnosperm,
Angiosperm
D. Angiosperm, Gymnosperm,
Vascular seedless, Non vascular
Answer:
The correct order of evolution is C- Non Vascular, Vascular seedless, Gymnosperms, Angiosperms.
Explanation:
The first plants to evolve were the non-vascular bryophytes like fungi and algae.
The next to evolve were vascular plants that supported a vascular tissue system but lacked seeds.
Gymnosperms are vascular plants that have seeds.
The seeds produced in the gymnosperms could undergo fertilization easily as the wind acted as pollen carrier.
The next to evolve were angiosperms or flowering plants.
Flowering plants have highly modified shoots that carry male as well as female gametes.
Mendel’s pea plants had either purple or white flowers. This means that the plants can self-pollinate. have two recessive traits. have two alleles for the gene. have two copies of a gene from one parent.
Answer:
I think it's that they have two alleles for the gene
The statement that Mendel’s pea plants had either purple or white flowers means that the plants have two alleles for the gene.
MENDEL'S LAW:Gregor Mendel is regarded as the Father of genetics due to his immense contribution to knowledge of genetic inheritance.
According to Gregor Mendel, a gene consists of two alleles, which individually encode different phenotypes of a particular trait.
In this question involving flower color gene, two alleles coding for purple (P) and white color (p) are present in the gene.
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