Answer:
A tan might indicate sun damage to the skin.
Explanation:
Tanning is the process by which the skin is exposed to the ultraviolet rays that comes from the sun with the purpose of producing a dark-brown coloration called a TAN.
A tan achieved by exposure to the sun can actually indicate that a person's skin is undergoing damage from the UV rays of the sun, hence, the skin responds by producing a protein called melanin, which protects the skin and later forms the dark coloration- tan. From this explanation, tan is got in response to a damaging signal received by the cell, hence, a tan might indicate sun damage to the skin.
Valves help blood flow in one direction. True or false?
Answer:
True
Explanation:
Functions from Valves are:
Stopping and starting flow.
Reduce or increase a flow.
Controlling the direction of flow.
Regulating a flow or process pressure.
Relieve a pipe system of a certain pressure
Answer:
T
Explanation:
Explain the presence of starch in the parts of a plant that do NOT contain chlorophyll.
Answer:
In the leaf, excess glucose is rapidly converted to starch, so we test leaves for starch to show that photosynthesis has happened, rather than testing for glucose. We often indicate that light and chlorophyll are required for the process by adding them to the equation near the arrow.
Interphase happens before MITOSIS and MEIOSIS
A. True
B. False
Answer:
A. True
Explanation:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Please HELP!!!
Which of the following best describes an organ system?
A. One or more cell types that perform specific functions
B. Various cells that perform different functions
C. Two or more tissues organized and capable of carrying out a specific task
D. Two or more organs that interact to perform a common task
Answer:
D
Explanation:
solute concentration
is higher outside the
cell causes the cell
shrink.
If these are your answer choices -
A. Hypertonic solution
B. Isotonic solution
C. Hypotonic solution
D. Both A and C
then your answer is:
Correct option is - A
Hypertonic solution
A hypertonic solution is a particular type of solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell. Water crosses the cell membrane in both directions, but more water leaves the cell than enters it. Therefore, the cell will shrink due to exosmosis.
In Guinea pigs black fur(B) is
dominant over white (b). What is the
phenotype of the offspring if one
parent is BB and the other is bb?
E. BB
F. Bb
G. Black
H. White
Answer:
Explanation:
F
in your own words, what is the definition for Diffusion?
Answer:
Diffusion basically means the spreading of something that's wide or the action of spreading the light from a light source that reduce glare and harsh shadows.
What type of power plant uses plant organic material and soil of plants as well as their waste products to generate electricity? Help fast ill put you brainlest
Answer:
Biomass power plant
Explanation:
it tells u from tittle too BIO
Help me with this question
Answer:
im sorry im not sure but i think its C
Explanation:
What makes climate change research valid?
A. Computer models have been fairly useless so far.
B. Computer models have been making fairly accurate predictions.
C. Predictions based on computer models are inflated.
e
D. Predictions based on computer models are highly variable.
Answer:
B
Explanation:
B is the only answer which brings up a positive argument towards climate change being valid, while all of the other answers talk about things that would make climate change seem not valid.
factoring web analysis
Answer:
Factor analysis is a collection of techniques employed to explore underlying latent variables or factors which influence the outcomes on a number of measured variables.
hope it helps
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In the predator-prey relationship between lions and zebras, when the population of zebras is great, the population of lions will
A. decrease
B. increase
C. stay the same
D. die off
Answer:
B. Increase
Explanation:
Since lions rely on zebras as a food source, if there are more zebras (more food sources for the lions), there will also be more lions. Therefore, the lion population would increase initally.
If a cell has a diploid number of 8 (2n = 8) before meiosis, how many chromosomes will be in each of the four daughter cells after meiosis II if one pair of homologous chromosomes experiences nondisjunction in meiosis I? Show how you got the answer by drawing out the process, starting with the diploid cell undergoing meiosis I (where nondisjunction occurs) and then meiosis II to get the four daughter cells.
Answer:
The final product is four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.
Explanation:
If nondisjunction occurs during meiosis 1, a pair of homologous chromosomes fail to separate, and one of the daughter cells will have the two chromosomes while the other cell will not get any chromosome from the pair.
If meiosis 1 occurs normally, but nondisjunction occurs in meiosis 2, sister chromatids fail to separate.
The usual process of meiosis produces four daughter haploid cells (n) from a diploid germ cell (2n). Each daughter cell is haploid because they have half the number of chromosomes of the original one.
If the diploid number of the original cell is 8 (2n=8), then under normal conditions, each haploid daughter cell should have 4 chromosomes (n = 4).
But in the exposed example, one pair of homologous chromosomes experiences nondisjunction during meiosis I (in the attached file, you will recognize this pair as the red one). The other chromosomes separate as usual. So one of the daughter cells will have one extra chromosome than expected (five instead of four), and the other daughter cell will lack one chromosome (three instead of four). Meiosis II occurs normally. The final result is the formation of four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.
PLEASE HELP!!! Giving 20 points! Explain the MAJOR differences between single-celled and multi-cellular organisms and give examples of each.
Answer:
Unicellular Organism (Single Celled Organism):
- They contain a single cell in their body.
- They are only visible under the microscope.
- Their life spam is comparatively short.
For example: Amoeba, Paramecium, etc.
Multicellular Organism:
- They contain numerous cells in their body.
- They can be seen with our naked eyes
- Their life spam is comparatively long.
For example: Human, Birds, etc.
What is the mass of the green cone?
Answer:
500 g
Explanation: trust
Answer:
500 g
Explanation:
i guessed:)
¿como realizaban el proceso de fotosíntesis los primeros organismos unicelulares?
Why do you think species need to adapt and change?
Answer:
All organisms need to adapt to their habitat to be able to survive. This means adapting to be able to survive the climatic conditions of the ecosystem, predators, and other species that compete for the same food and space.
Explanation:
Answer:
All organisms need to adapt to their habitat to be able to survive. This means adapting to be able to survive the climatic conditions of the ecosystem, predators, and other species that compete for the same food and space.
Explanation:
Which population of organisms would be in greatest danger of becoming extinct? *
A. A population of organisms having few variations living in a stable environment.
B. A population of organisms having many variations living in a stable environment.
C. A population of organisms having few variations living in an unstable environment.
D. A population of organisms having many variations living in an unstable environment.
Which BEST describes how the removal of the trees and plants will affect the level
of carbon in the atmosphere?
A. The level of carbon in the atmosphere will decrease because there are
fewer sinks in the ecosystem.
B. The level of carbon in the atmosphere will increase because there are
fewer sinks in the ecosystem.
C. The level of carbon in the atmosphere will decrease because there are
fewer sources in the ecosystem.
D. The level of carbon in the atmosphere will increase because there are
fewer sources in the ecosystem.
Answer:B. The level of carbon in the atmosphere will increase because there are fewer sinks in the ecosystem.
Explanation:
The best description to remove the trees and plants will affect the level of carbon in the atmosphere is the level of carbon in the atmosphere will increase because there are fewer sinks in the ecosystem.
What is carbon dioxide?Carbon dioxide is a gas present in the air. The plants reduce carbon dioxide by consuming it in the process of photosynthesis. Carbon dioxide increase the warmth of the earth, so reducing the carbon dioxide is necessary for the environment.
Thus, the correct option is B.
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Which of the following statements is MOST accurate: Group of answer choices Animals evolved during the Cambrian Explosion because the Earth was organized into a supercontinent called Pangea Animals evolved during the Cambrian Explosion because oxygen on Earth had become abundant Animals evolved during the Cambrian Explosion because the Earth had just recovered from an asteroid impact Animals evolved during the Cambrian Explosion because carbon dioxide on Earth had become abundant
Answer:
Animals evolved during the Cambrian Explosion because oxygen on Earth had become abundant.
Explanation:
Photosynthesis could be responsible for the rise in the amount of oxygen in the seas and atmosphere near the beginning of the Cambrian. This rise of oxygen concentration allowing the evolution of larger animals having complex respiratory and circulatory systems. So we can conclude that evolution in the physical and genetical characteristics of animals occur during the Cambrian Explosion.
The dichotomous key below provides a way to classify some animals into groups according to their physical characteristics. The key can be used to classify each of the four animals represented below. Which answer choice shows the correct classification group for each animal? 1. Wasp = group D; Ant = group D; Tiger = group A; Bird = group B 2. Wasp = group B; Ant = group A; Tiger = group D; Bird = group C 3. Wasp = group B; Ant = group D; Tiger = group A; Bird = group C 4. Wasp = group D; Ant = group A; Tiger = group A; Bird = group B
Complete question:
The dichotomous key below provides a way to classify some animals into groups according to their physical characteristics.
Dichotomous Key
I wings------------------go to II
no wings------------- group A
II feathers---------------group B
no feathers----------go to III
III two legs------------- group C
six legs---------------group D
The key can be used to classify each of the four animals represented below ⇒ wasp, ant, tiger, bird
Which row in the chart shows the correct classification group for each animal?
Row Wasp Ant Tiger Bird
(1) group D group D group A group B
(2) group B group A group D group C
(3) group B group D group A group C
(4) group D group A group A group B
Answer:
Row Wasp Ant Tiger Bird
(4) group D group A group A group B
Group A: Tiger and Ant → They do not have wingsGroup B: Bird → It has wings and feathersGroup D: Wasp → It has wings, does not have feathers, and has six legsExplanation:
When analyzing a dichotomous key, you just need to pay attention to the given descriptions and carefully observe the organisms you have.
The key describes specific morphological traits of each organism that are useful to differentiate it from other organisms. So all you need to do is to follow the instructions given in each step, and the key will guide you directly to the answer.
In the exposed example you have four organisms: wasp, ant, tiger, bird
The provided key gives you three steps: I, II, III.
Step I:
wings------------------go to II
no wings------------- group A
Here the key tells you to separate, from your group of organisms, the ones that have wings from the ones that do not have wings.
wasp and bird have wings → So you need to go to step IItiger and ant do not have wings → So they belong to Group AStep II:
feathers---------------group B
no feathers----------go to III
Now you only need to consider the bird and the wasp, which are the two organisms that have wings.
Here the key tells you to separate the one that has feathers from the one that does not have feathers.
Bird has feathers → So it belongs to the group BThe Wasp does not have feathers → So you need to go to step IIIStep III:
two legs------------- group C
six legs---------------group D
In this last step, the key takes you to two possible groups. But you only have one left organisms, which is the wasp. So what you need to do is to observe how many legs your wasp has. It is an insect, so it has six legs. The wasp belongs to Group D.
You do not have any organism that belongs to group C.
To sum up, according to the given information you could group the group of organisms as follows:
Group A: Tiger and Ant → They do not have wingsGroup B: Bird → It has wings and feathersGroup D: Wasp → It has wings, does not have feathers, and has six legsWhat molecule brings amino acids to the ribosome during translation?
A. mRNA
B. rRNA
C. tRNA
Answer:
A. mRNA
Explanation:
The mRNA brings amino acids to the ribosome during translation.
in your own words, write the definition for Phagocytosis.
how is Phagocytosis related to endocytosis?
Answer:
Process by which phagocytes ( a type of cell from the immune system) engulf other particles
Explanation:
Endocystosis is the process of bringing particles/substances into a cell (endo-in). Therefore phagocytosis is a form of endocytosis.
what is the location and function of abdominal lymph nodes?
the water in ponds and lakes is...
Answer:
freshwater
Explanation:
Answer:
Lakes and ponds are inland bodies of standing or slowly moving water.
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While washing her hair, Olivia noticed that she was losing a lot of hair. She visited a clinic, and the physician reassured her that her hair would grow back. How do you think Olivia’s hair will grow back?
A.
The hair will grow back by undergoing regeneration.
B.
The hair will grow back by undergoing meiosis.
C.
The hair will grow back by undergoing binary fission.
D.
The hair will grow back by undergoing mitosis.
Answer:
The answer on Plato is D.) The hair will grow back undergoing mitosis.
Explanation:
Why does it make sense that some of the longest and most powerful muscles in the human body are located in your thighs? Pls help...
Answer:
huh? i dont know..
[extra characters]
The gluteus maximus is the largest muscle in the human body. Its role in maintaining the body's trunk in an upright position makes it big and strong.
What are muscles?Muscles are defined as a collection of muscles that contract together to generate force.
Muscle is coordinated systems of contractile tissue for better performance.
It can also be defined as an organ made of muscular tissue that moves in a specific way when it contracts.
A person's muscles enable them to move, speak, and chew.
They manage digestion, respiration, and heartbeat.
Other, seemingly unrelated systems like regulating body temperature and vision also depend on the muscular system.
There are three types of muscles.
Cardiac musclesSmooth musclesSkeletal musclesThus, the largest muscle in the human body is the gluteus maximus. Its role in maintaining the body's trunk in an upright position makes it big and strong.
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how many different processes can be involved in changing the allele frequency?
A. 10
B, 1 only natural selection
C. 4
D. 5
E. Way too many count.
Answer:
5
Explanation:
The Hardy-Weinberg equilibrium principle says that allele frequencies in a population will remain constant in the absence of the four factors that could change them. Those factors are natural selection, mutation, genetic drift, and migration (gene flow). In fact, we know they are probably always affecting populations.
Answer:
D. 5
Explanation:
There are 5 factors can be involved in changing the allele frequency.
Can someone explain to me why I don't understand?
Explanation:
1) Chromosomal Abnormality is an extra chromosome at 18
Gender is Male because chromosome 23 has one X chromosome and one Y chromosome.
Disorder name is Edwards Syndrome
2) Chromosomal Abnormality is an extra chromosome at 21
Gender is Female because chromosome 23 has two X chromosomes
Disorder name is Down Syndrome
NEED HELP ASAP PLEASE
5. What is the difference between radial and ulnar loops?
1. Radial loops point toward the pinky (radius bone) and ulnar loops toward the thumb (ulna bone)
2. Radial loops point toward the thumb (radius bone) and ulnar loops toward the pinky (ulna bone)
3. Radial loops point right and ulnar loops point left
4. Radial loops point toward the head (radial region) and ulnar loops towards the feet (ulnar region)
Answer:
Radial Loop – This pattern is similar to the ulnar loop, but the difference is the turns point toward the thumb instead of the small finger.
The difference between radial and ulnar loops is that the radial loops point toward the thumb (radius bone) and the ulnar loops toward the pinky (ulna bone). Thus, the correct option for this question is B.
What is a Radial loop?A radial loop may be defined as the term that significantly describes the radius of a bone in the forearm that generally adjoins the hand on the same side with respect to the thumb.
While the ulnar loop governs the same arrangement of bones in the forearm but they usually adjoin the hand on the same side with respect to the pinky (small) finger.
Therefore, the radial loops point toward the thumb (radius bone), and the ulnar loops toward the pinky (ulna bone) is the statement that represents the difference between radial and ulnar loops.
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