Answer:
DNA damage suffered by a cellA lymphocyte responding to an active infectionRemoval of certain tissues during embryonic developmentExplanation:
Apoptosis is an ordered and programmed process of cellular death. It responds to the organism´s needs during development and the whole life. It is a normal and necessary process.
There are different reasons and moments in life where apoptosis takes place.
Embryogenesis: During embryo development, some tissues need to be removed to continue to the next development stage. A typical example is the hand´s tissues. During the early stages, the hand looks like a la plate. With the pass of days, tissues between the fingers are removed by apoptosis. Adulthood: Adults also go through the process of apoptosis. In cases where the person develops abnormal cells with damaged genetic material, they are subjected to apoptosis.Another scenario is a cell with an infectious agent, such as a virus, affecting the cell´s and the organisms´ proper functioning. When the active infection is affecting the cell or the tissues, these cells also suffer apoptosis.
True or False:
Meiosis make 4 unique gametes (reproductive cells)
Answer:
true
Explanation:
don't quote me on it but I'm pretty sure it's true
A new highly nutritious crop is going to be planted in an area where it has never been planted before. Which is the most likely outcome of such an event?
positive as it malnourishes the local population
positive as it changes local biodiversity
negative as it threatens local biodiversity
negative as it malnourishes the local population
Answer:
C
Explanation:
The most likely outcome of such an event is negative as it threatens local biodiversity. Therefore, option (C) is correct.
What do you mean by biodiversity?The variety and variety of life on Earth is called biodiversity or biological diversity. Biodiversity is a proportion of variety at the hereditary, species, and biological system level.
The diversity of the various kinds of organisms—the plants, animals, insects, and microorganisms that inhabit our planet—that can be found in the natural world around us is called biodiversity.
The majority of people recognize biodiversity by species, which is a group of distinct, interbreeding living organisms. Blue whales, white-tailed deer, white pine trees, sunflowers, and even microscopic bacteria.
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What is NOT a solid waste ? A.Methane B.Grass clipping and leaves C.old cell phones
Answer:
A. Methane
Explanation:
Methane is a gas not a solid. Every other answer choice is a solid.
Which brand contains the smallest DNA fragments?
What term describes the technique that was used to generate the results shown in the figure
Answer: hello im am very smart but i dont know this one
Explanation:
Help me please with both of them
Answer:
Routine
neglegted
Explanation:
that is my answer
Which of the following is a property of water? (4 points)
It can dissolve only acids.
It expands when it melts.
It exists naturally in only in two states.
It has a low surface tension.
It stores heat energy well.
Answer:
QUESTION NUMBER THREE DONEE YA BOIIIIIIIIII
Explanation:
What was the problem is Redi's experiment
a. How do maggots appear in meats?
b. How do worms appear in wood?
c. Is spontaneous generation a valid explanation for maggots in meats?
O d. All of the above are examples of problems.
HURRY PLEASE
Answer: c. Is spontaneous generation a valid explanation for maggots in meats?
Explanation:
Why is the first hill of a roller coaster always the tallest? Explain.
Answer:
The first hill of a roller coaster is always the highest point of the roller coaster because friction and drag immediately begin robbing the car of energy. At the top of the first hill, a car's energy is almost entirely gravitational potential energy (because its velocity is zero or almost zero
Explanation:
Because friction and drag start depriving the car of energy right away, the first hill of a roller coaster is always the steepest part of the ride.
What is friction?The resistance to motion created when two objects rub against one another is called friction. Friction occurs whenever two items come into contact with one another. Friction acts in the opposite direction from the motion and works against it. The two surfaces' respective materials have an impact on how much friction exists.
Static friction, sliding friction, rolling friction, and fluid friction are the four main categories of friction.
Friction and drag start depriving the car of energy right away. Therefore, the first hill of a roller coaster is always the tallest.
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i just need these three labeled and i’m good lol
Tsunami waves are caused by earthquakes in the ocean floor. As the waves approach the shore, they usually grow in height. When this occurs, which aspect of the wave is changing?
A.
amplitude
B.
direction
C.
frequency
D.
speed
E.
wavelength
Answer:
LETTER A. AMPLITUDE
Explanation:
Got it right on the test
Which of the following invertebrates is most closely related to the vertebrates? Select all that apply.
1. echinoderms
2. cnidarians
3. arthropods
4. chordates
Answer:
I would say chordates. (Not absolutely sure so double check)
Explanation:
Chordates have a dorsal nerve cord, which is super close to a spinal cord. (Which vertebrates have.)
Answer: Echinoderms
Explanation:
The Echinoderms deuterosomes mouth development and bilateral symmetry in the larval stage lead some scientists to believe that they are the closest to vertebrates.
BRAINLIEST!! 5 STARS AND A THANKS!!
Answer: Its a convergent boundary and they move inwards, They create mountains.
The other is a transform boundary and they slide each other like friction, they create earthquakes.
The last one is a divergent boundary and they move outwards, they can create seafloor spreading.
Products that we get from our ecosystems that we can use, buy, or sell; are which type of ecosystem service? Group of answer choices, Provisioning services, Supporting services, Cultural services, or Regulating services.
Answer:
Provision Services
Explanation:
A provisioning service is any type of benefit to people that can be extracted from nature. Along with food, other types of provisioning services include drinking water, timber, wood fuel, natural gas, oils, plants that can be made into clothes and other materials, and medicinal benefits.
What is the MAIN difference between prokaryotic (bacteria) cells and eukaryotic cells?
A. Presence of Cell membrane
B. Presence of Nucleus
C. Presence of Cell Wall
D. Single-Cell vs Multicellular organisms
Answer:
Single cell vs Multicellular organisms
Explanation:
A prokaryote is a single celled organism such as bacteria, whereas eukaryotes are multicellular beings, such as humans and other forms of life made up of multiple cells.
Why do we not see the colors of the other pigments, such as yellow?
Answer:
there is so much chlorophyll in the leaves we simply cannot see the other pigments. But as the daylight shortens, the tree does not make as much chlorophyll. As the chlorophyll starts to fade away, we are able to see the other colors (pigments) in the leaf, mostly yellow ones.
Explanation:
Answer:
Subtractive color mixing occurs when light is reflected off a surface or is filtered through a translucent object. For example, a red pigment or filter only appears red because it absorbs (subtracts) all of the light that is not red and only reflects or allows the red light. if you mix blue with red light, you get magenta light. When you mix (add) all the colors of light together, you get white light. This is why it is referred to as additive color. With subtractive color, you see color because some wavelengths are being reflected and others are being absorbed ( subtracted ).
Explanation:
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What would happen if the chromosome did not move to the opposite sides of the nucleus before the cell pinched apart?
When running, which muscle tissue is
responsible for keeping your body stable
and controlling your movements?
Answer:
Skeletal musclesExplanation
1. What gene involved in skin pigment varies a great deal across populations?
2. Why doesn’t skin cancer explain this selection?
3. What does strong sunlight do to folate?
ALOT OF POINTS!!!!!
Answer:
Explanation:12werffdew
Answer:
1.A number of genes have been positively associated with the skin pigmentation difference between European and non-European populations. Mutations in SLC24A5 and SLC45A2 are believed to account for the bulk of this variation and show very strong signs of selection.
2.Cancer can circumvent negative selective pressures due to its ability to accumulate mutations that cause genetic diversity in tumor cells as the cells proliferate. Cancer seems to have evolved a propensity for, or at the very least, a selection for fitness.
3.Folate levels decrease depending on sun exposure, study says. 05 Feb 2019 --- Folate levels decrease during the months when solar radiation is higher and ultraviolet radiation proportionately affects folate levels in the blood.
Explanation:
Si tu masa corporal fuera 10 kg, ¿qué peso tendrías aquí en la tierra al
nivel del mar?
Answer: 98.1 N
Explanation:
En física, la masa es una magnitud y una propiedad que se mide en unidades, como kilogramos. Por otro lado, el peso es una magnitud vectorial o fuerza que se mide en netown (N). El cuerpo experimenta una atracción hacia la tierra, llamada gravedad, la cual es un fenómenos en donde dos objetos o cuerpos son atraídos entre sí. En este caso, la masa del cuerpo de 10 kg es muy inferior a la masa de la Tierra. Por lo que la atracción del cuerpo hacia la tierra es despreciable, y solo vamos a tomar en cuenta la atracción de la Tierra hacia el cuerpo.
La fuerza de gravedad a nivel del mar es de 9,81 metros/segundos^2. Reemplazando los datos en la ecuación de fuerza, la cual es:
Fuerza = masa x aceleración
obtenemos que:
Fuerza= 10 kg x 9,81 m/s^2 = 98.1 N
Por lo que el peso a nivel del mar es de 98.1 N.
Researchers used DNA sequencing techniques to find similarities of Hox genes in roundworms, arthropods, mollusks, echinoderms, cephalochordates, and vertebrates. What did they find out about these genes? Select all that apply. A. Hox genes provide information about evolutionary relationships. B. Similarities among Hox genes suggest that they all arose from a single ancestral gene that duplicated many times. C. Hox genes are regulatory genes that determine body plans of animals. D. Only some animals that have been tested have Hox genes, suggesting that Hox genes have no function and only evolved recently.
Answer:
(B) Similarities among Hox genes suggest that they all arose from a single ancestral gene that duplicated many times.
Explanation:
Hox genes are arranged in clusters and their order on the chromosome is the same as the order in which they are expressed along the body during development.
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A zygote (the cell formed when an egg and a sperm cell initially fuse) is:
A) multipotent
B) pluripotent
C) totipotent
D) omnipotent
Answer: https://rb.gy/rb1nlh copy that into search browser
Explanation:
7. How is parasitism different from other types of symbiosis?
i need help with this please
Answer:
legs
Explanation:
All the animals in group one have legs while the ones in group 2 don't
why can the hydrgoen ions not freely pass throufh the membrane without ATP synthase
Answer:
Explanation:
it is made of negativity charged phosphate group
HELP ! can someone please explain to me on how to set it up ?
Answer:
The correct answer is -
4/4
100%
Explanation:
In this question, it is given that allele B (blue) is dominant over allele b (purple) and both Randal and cell have the same genotype of recessive alleles that is bb and bb.
The offspring of these two will be the same as the due to gametes Randall and cella produce are same which is b and b.
b b
b bb bb
b bb bb
here all four out of four have the same purple skin with 100% chances.
What delivers oxygen around your body to different organs and tissues
Answer:
The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.
Explanation:
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Blood types;
A man with type O marries a woman with type AB.
Several children were born.
1. What is the genotype of the man?
2. What is the genotype of the woman?
3. True or false? the mother of the man had type AB blood.
4. Could the mother of the woman have type O blood?
5. what fraction of offspring would have type B blood?
6. what fraction of the children would have type AB blood?
7.Could this couple have a child with type O blood?
Answer:
A genotype is an organism's complete set of genetic material. Often though, genotype is used to ... If she mated with a man with haemophilia (another carrier) there would be a 75% chance of passing on the gene. A punnett square showing a ...
Explanation:
.
What is one reason why plants can grow in the tundra?
the ability to grow tall
a thin layer of active soil
a thick layer of permafrost
a ten-month long summer
Answer:
im not sure but i think it is (a thick layer of permafrost ) sorry if im wrong
Explanation:
Answer:
a thin layer of active soil
Explanation:
The tundra’s ground has a thin layer of active soil that thaws during summer. Because of this, plants can grow.
What ratio of plants in the offspring would you predict from a Yy x Yy cross?
Answer:
The correct answer is -
The genotype of offspring - 1:2:1 (YY:Yy:yy)
The phenotype of offspring - 3:1 (dominant trait: recessive trait)
Explanation:
In this question, it is stated that there is a cross between Yy and Yy. By the genotype of the parents, we can say that Y is dominant for a particular trait and y is recessive and the parents are in the heterozygous condition in this cross. The gametes these parents will produce are - Y and y and Y and y
then the cross of Yy and Yy would be -
Y y
Y YY Yy
y Yy yy
Offspring from this cross are YY, Yy, Yy, and yy which means the genotypic ratio is - 1:2:1 and the phenotypic ratio is - 3:1 as three out of four are dominant.
ASAP Arizona deserts have been transformed by: chemical fertilizers use of pesticides irrigation canals recycling plants
this is all the points i have 88
Answer:
irrigation canals
Explanation:
Answer:
irrigation canals
Explanation: