Answer:
chemical evolution
Explanation:
This type of evolution is what we believe started the origin of life. Chemical evolution is when something changes to have different abilities (which in this case would be true).
Have a great day everybody!
Which statement best describe a chromosome?
A. It is a single piece of DNA that contains genes.
O B. It forms the hereditary material of all life on Earth.
OʻC. It is the passing of characteristics from one generation to the next.
O D. It is the part of a chromosome that ties together two chromatids.
Answer: A
Explanation: It most definetly not B, becuase not every form of life has DNA. A chromosome is a single chain of DNA that is coiled and super coiled to form dense thread-like pieces. The term chromosome is derived from the Greek words "chroma" or color and "some" or body and is so named because chromosomes have the ability to be stained with dyes.
1. Ultimately, is Hydraulic Fracturing socially responsible? Does Marginal Social Benefit (MSB) =
Marginal Social Cost (MSC)? Explain your answer with details from your reading.
Answer: Yes as the damage is minimal, I don't have your reading but the research is out there.
Explanation:
Negative feedback: If the body temperature is high, the rate of perspiration (sweat) should
A. increase
B. decrease
Answer:
I believe it would decrease
Explanation:
The high temperature will be detected by sensors—primarily nerve cells with endings in your skin and brain—and relayed to a temperature-regulatory control center in your brain. The control center will process the information and activate effectors—such as the sweat glands—whose job is to oppose the stimulus by bringing body temperature down.
what is needed for dna replication
Answer:
enzymes
ATP energy
nucleotides
Explanation:
All of the above are needed. Nucleotides are the basic building blocks of new DNA, ATP energy is needed because replication is an active process, and enzymes catalyze the reactions needed to carry it out (e.g. helicase to separate the strands to be replicated, DNA polymerase to build the new strands, and ligase to "glue" the fragments together).
Eukaryotic cells grow and divide through a series of events called the
cell cycle as shown in the diagram below. Based on the information
provided, what are the three main phases of the cell cycle?
Answer:
Please, you stated : "Eukaryotic cells grow and divide through a series of events called the cell cycle as shown in the diagram below." what diagram???
Is mitosis essential to life?
Answer:
Yes
Explanation:
in order for you to fully function and stay alive the cells need to be replaced. mitosis is the reason we can grow, heal wounds, replace damaged body parts and cells. It also helps with organisms that reproduce.
Which of the following is produced by the immune system to identify foreign cells?
antibodies
antigens
bacteria
colored dye
Answer:
im pretty sure its antibodies
Explanation:
Answer:
1sy option
Explanation:
edge 2021 :p
Help me describe how these protists feed, move, and reproduce.
A plant-like protist
A fungus-like protist
Ciliophoran
Zooflagellate
Sarcodinian
Sporozoan
Explanation:
Protists are mostly one-celled organisms. Some make
their own food, but most take in or absorb food. Most
protists move with the help of flagella, pseudopods, or
cilia. Some protists, like the one-celled amoeba and paramecium, feed on other
organisms.
Fungus-like protists share many features with fungi. Like fungi, they are heterotrophs, meaning they must obtain food outside themselves. They also have cell walls and reproduce by forming spores.
Ciliates reproduce asexually by division: the micronucleus undergoes mitosis, while in most ciliates the macronucleus simply pinches apart into two. This process is shown in the drawing above. However, ciliates also reproduce sexually, through a process known as conjugation. Conjugation is often induced by lack of food. Two ciliates of opposite mating types come close together and form a cytoplasmic bridge between the two cells; the micromuclei divide by meiosis, the macronuclei disintegrate, and the conjugating cells exchange haploid micronuclei over the cytoplasmic connection. They then separate, reform new macronuclei from their micronuclei, and divide, but remember that the essence of sexual reproduction is forming a new organism from the combined genetic material of parents. After conjugation, each ciliate partner has acquired new genetic material, and divides to give rise to progeny with a new combination of genes. This is essential to the survival of ciliate lineages; most ciliates cannot reproduce indefinitely by asexual fission, and eventually die out if prohibited from conjugating.
One convenient way to categorize protozoans is by how they move. Some move rapidly, while others creep slowly. Still others are not capable of active movement at all, but instead rely on a host organism to supply their food.
Protozoans With Flagella
Zooflagellates (zoh oh FLAJ uh lits) move by means of one or more flagella. (Recall from Chapter 6 that flagella are long, thin, whip-like cellular projections.) Zooflagellates generally reproduce asexually by binary fission. Recall that asexual reproduction results in genetically identical offspring.
Sarcodines reproduce sexually by syngamy (fusion of two gametes) and asexually by division or budding. In multinucleate forms, cytoplasmic division with distribution of the nuclei occurs.Members of the phylum Sarcodina are ameboid. They move about by using pseudopods and usually eat by phagocytosing food particles, usually bacteria. Some amoeba form calcium carbonate or silica skeletons called tests to protect themselves.
The sporozoans are able to form spore-like cells, from which they get their name. Sporozoans do not have flagella, cilia, or pseudopodia. They are capable of gliding movements. ... The apical complex secretes enzymes which allow the sporozoan to enter a host cell.Apicomplexan, also called sporozoan, any protozoan of the (typically) spore-producing phylum Apicomplexa, which is called by some authorities Sporozoa. ... Apicomplexans feed by absorbing either dissolved food ingested by the host (saprozoic nutrition) or the host's cytoplasm and body fluids.Protozoa reproduce asexually by fission, schizogony, or budding. Some protozoa can also reproduce sexually. Relatively few protozoa cause disease
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How is homeostasis maintained in an ecosystem?
Answer:
Homeostasis is maintained through negative feedbacks. As changes in the environment push a system property from its equilibrium, negative feedbacks counteract the. Change in environment. Change in environment.
Homeostasis is maintained through negative feedbacks.
Hope it is useful
The prefix exo- means “out of” and the prefix endo- means “taking in”. How do these meanings relate to the meaning of exocytosis and endocytosis?
Answer:
Cytosis is is the transportion of large quantities of molecules into and out of cells. If exo means out of, that means the molecules are moving out of the cell. Endocytosis is when molecules move into the cell.
Explanation:
Answer:
The prefix “endo” means
✔ in
.
The prefix “exo” means
✔ out
.
✔ Homeostasis
is the state of maintaining a stable internal environment despite changing external conditions.
for yall on egde.
Explanation:
Rock layers showing ripple marks cross-bedding and fossil shells indicate that these layers were formed
a.) From solidification of molten material.
b.) From deposits left by a continental ice sheet.
c.) By high temperature and pressure
d.) By deposition of sediments in a shallow area
Answer:
d) By deposition of sediments in a shallow area
Explanation:
Deposition is the deposition of wind, water or ice sediments. The sediment may be shipped in the form of steaks, sand & mud or water-dissolved salts.
Sediment accumulation can be seen everywhere in the water chain, from ponds, reservoirs, deltas and floodplains to high mountain rivers.
called CF is a condition that causes excess mucus production in the lungs and if untreated causes early death. CF is caused by a deletion of 3 letters in the gene sequence. How might this deletion cause excessive mucus production?
Answer:
The correct answer is - by absorbing too much sodium and water into the cells in the respiratory system.
Explanation:
Cystic fibrosis or CF is a genetic disorder that is caused by the presence of two defective genes that leads to the production of thick and sticky mucus in an individual that affects the respiratory and digestive system by clogging mucus in it.
Due to defective genes, there is an abnormal electrolyte transport system develops in which cells of the respiratory system including the lungs absorb an excessive amount of salt (sodium) and water. It all caused by deletion of the three letters which means an amino acid from a gene that leads to the disruption of the protein that controls the production of the mucus and abnormal electrolyte transport.
PLEASE HELP
Velocity is _________________ Question 3 options: The rate an object moves in a certain direction, in relation to the reference point. The amount of time it takes an object to move from point A to point B. The measuring scale used when describing the thrust need to lift a rocket The displacement an object displays between it’s starting point and end point.
Answer:
The amount of time it takes an object to move from point A to point B.
Explanation:
Can I get Brainliest
Velocity is The amount of time it takes an object to move from point A to point B. Therefore, option B is correct.
What is velocity?When an item is moving, its velocity is the rate at which it is changing position as seen from a particular point of view and as measured by a certain unit of time. The meter per second (m/s) is the accepted unit of velocity magnitude (also known as speed). The various forms of velocities include uniform, variable, average, and instantaneous velocities.
There are countless practical uses for velocity, but one of the more frequent ones is figuring out how quickly you (or anything in motion) will get somewhere from somewhere.
Velocity is The amount of time it takes an object to move from point A to point B. Therefore, option B is correct.
Learn more about velocity, here:
https://brainly.com/question/28738284
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Which of the following is NOT consistent with the concept of natural
selection?
A. Individual organisms are able to change their genetic adaptations in
order to better survive in changing environments.
B. More offspring are produced than can survive in an environment
(overproduction of offspring).
C. There is genetic variation within populations.
D. Organisms with beneficial variations are more likely to survive and
reproduce, passing on their genes to subsequent generations.
Click to choose your answer helow:
Answer:
A. Individual organisms are able to change their genetic adaptations in
order to better survive in changing environments.
Explanation:
Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.
Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.
The statements which are consistent with the concept of natural selection includes;
I. More offspring are produced than can survive in an environment (overproduction of offspring). This ultimately implies that, the more offsprings that are reproduced by the parent organism, the more likely are they to survive.
II. There is genetic variation within populations. This simply means that tere is a better chance of having good or beneficial traits being passed from the parent organism to her offsprings.
III. Organisms with beneficial variations are more likely to survive and reproduce, as well as passing on their genes to subsequent generations.
Natural selection explains how _________________ change as their environments change.
why was their more islands in cape cod in 2014 than in 1984
Answer:
The lowering water is causing the underwater lands to be exposed to the surface of the sea level.
Explanation:
Hope this helps! :)
Science - SC3206 - TAL
Which statements describe vascular tissue? Check all that apply.
The primary purpose of vascular tissue is to support the plant and help it stand upright,
Phloem carries food made during photosynthesis to other parts of the plant,
Phloem contains the chloroplasts,
Xylem moves water and nutrients throughout the plant,
Xylem is the protective, waxy layer on a plant that prevents water loss,
Answer:
B
Explanation:
As I think second statement describes vascular tissue.
Answer: b and d
Explanation:
Which climate is a subcategory of temperate marine climates? O arid
O humid subtropical O humid continental O tundra
Answer: Humid subtropical
Explanation: There are three kinds of temperate marine climates: marine west coast, humid subtropical, and mediterranean. Marine west coast climates are the coolest temperate marine climates. Humid ocean air brings cool, rainy summers and mild, rainy winters. Mediterranean climates are drier and warmer.
Answer:
B is your answer
Explanation:
Which of the following best describes the process of protein synthesis?
Group of answer choices
Amino acids are translated from mRNA, then mRNA is transcribed back into DNA
DNA is transcribed into mRNA, then mRNA leaves the nucleus to go to the ribosomes for translation
mRNA stays in the nucleus, which is where DNA is transcribed into amino acids. The amino acid then go to the ribosome to build proteins.
DNA leaves the nucleus through transcription and goes to the ribosome, where it is translated into amino acids
Hello please answer this really fast all of the screen shots will be in the comments I will give 90 points to who ever answers it really fast
Answer:
Where? Where are your questions? Attach the questions.
Answer: bro where is the question ???
Explanation:
This diagram represents the cell cycle. When cells leave the cell cycle, they exit during G1 phase and then enter G0 phase, a resting period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 phase before entering S phase. Cancer cells are different because they cannot enter G0 phase and are likely to do which of the following?
A Fail to complete S phase
B Continuous unregulated cell division
C Mutate during G phase
D Die after completing mitosis
In an experiment the manipulated variable is also called a(n) ________ variable.
Answer:
independent!
I hope this answer helped! please rate 5 stars and mark brainliest! >:)
Explanation:
Answer:
Independent Variable
Explanation:
0. During Calvin cycle, it takes 3 turns to produce 6 molecules of glyceraldehyde-3-phosphate where 5 molecules
proceeds for the regeneration of RuBP and 1 molecule is use for the synthesis of what molecule?
A. RuBP C. 2,3—PGA
B. Oxygen D. Glucose
11. The best explanation of the equation in an aerobic respiration.
A. Glucose is oxidized to produce the energy
B. Oxygen oxidizes glucose to produce CO2, H2O and Energy
C. Glucose plus the presence of oxygen produces the energy needed by the organism
D. The oxidation of glucose produces energy as the product and molecules of CO2 and H2O as a by-product
12. What is the importance of anaerobic respiration?
A. produces lactic acid needed by the organism
B. provides the right energy needed by the organism
C. the failed—play safe of organisms when aerobic respiration takes all the oxygen supply to be used during
strenuous activities
D. all of the above
13. The obvious difference of aerobic and anaerobic respiration is the presence of oxygen in the process and the
products they produce. This means that
A. NADH for aerobic and NADPH for anaerobic respiration
B. ATP is produced during aerobic respiration and ADP for anaerobic respiration
C. ATP is the product of aerobic respiration and NADH is the product of anaerobic respiration
D. ATP is the product of aerobic respiration and Lactic acid for anaerobic respiration to be utilize by the organism
Answer:
10) glucose
11)The oxidation of glucose produces energy as the product and molecules of CO2 and H2O as a by-product
12)the failed—play safe of organisms when aerobic respiration takes all the oxygen supply to be used during
13)ATP is the product of aerobic respiration and Lactic acid for anaerobic respiration to be utilize by the organism
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Why are reproductive technologies important to some infertile couples?
Read the statement.
In a food chain, algae carry out photosynthesis, which produces their food. Some small fish feed on the algae. Seabirds then feed on those small fish.
Which statement correctly describes this food chain?
Select one:
The seabirds are the producers.
The fish are the primary consumers.
The seabirds are the primary consumers.
The fish are the producers.
help!
Answer:
option B ,is correct answer of this question
Answer:
B
Explanation:
What is the function of spindle fibers during cell division?
How many atoms are in this picture?
Na3C6H507
Answer:
Explanation:
Trisodium citrate has the chemical formula of Na3C6H5O7. It is sometimes referred to simply as "sodium citrate", though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor. It is mildly basic and can be used along with citric acid to make biologically compatible buffers
Sodium citrate is chiefly used as a food additive, usually for flavor or as a preservative. Its E number is E331. Sodium citrate is employed as a flavoring agent in certain varieties of club soda. It is common as an ingredient in bratwurst, and is also used in commercial ready-to-drink beverages and drink mixes, contributing a tart flavor. It is found in gelatin mix[clarification needed], ice cream, yogurt, jams, sweets, milk powder, processed cheeses, carbonated beverages, and wine[citation needed], amongst others.
describe how cell structures and organelles interact systemically to maintain or restore homeostasis in the body
Explain in your own words why a dominant trait is not always a common trait.
Answer:
Describing a trait as dominant does not mean it is the most common; it means that it is expressed over the recessive trait. For example, tongue rolling is a dominant trait, controlled by the dominant version of a particular gene (R). Individuals with one or two copies of R will exhibit tongue rolling.