Answer:
Velocity of rolling ball = 1.97 m/s (Approx.)
Explanation:
Given:
Distance travel by rolling ball = 7.3 meter
Time taken by rolling ball = 3.7 seconds
Find:
Velocity of rolling ball
Computation:
Velocity = Distance / Time
Velocity of rolling ball = Distance travel by rolling ball / Time taken by rolling ball
Velocity of rolling ball = 7.3 / .37
Velocity of rolling ball = 1.9729
Velocity of rolling ball = 1.97 m/s (Approx.)
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Answer:
Yes; When the cell grows larger,, it needs more cell membraine to prepair for mitosis. Without this process, the cell would rupture.
Yes; The cell would not be able to grow if the surface area stayed the same.
Hope this helps ^v^
What makes a species successful in an ecosystem?
Answer:
Beside the intensive loss of forest cover [2], fragmentation of the pristine remnants further affects species [3] and limits their ability to move into adequate areas. Thus the ability to cope with altered landscapes is crucial for the persistence of a species, especially in the face of climate change.
What are the seven taxon characteristics of a human again?
K
ד ר ת
Answer:
I believe they are Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Explanation:
in VDJ recombination occurs in the Group of answer choices variable region of the heavy chain. constant region of the light chain. variable region of the light chain. Both the light and heavy chain.
Answer:
constant region of the light chain.
Explanation:
The VDJ recombination is defined as the process where the T cells as well as the B cells are randomly assembled from the different gene segments. These are mainly known as the variables (V), the diversity (D) and the gene (G). This is done in order to generate the unique receptors which is also called as the antigen receptors so that they can collectively recognize the different types of the molecules. It mainly occurs in the constant region of the light chain.
please help!!!!!!!!!!!
Answer:
Typically, the nucleus of a cancer cell is larger and darker than that of a normal cell and its size can vary greatly. Another feature of the nucleus of a cancer cell is that after being stained with certain dyes, it looks darker when seen under a microscope
Explanation:
In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it.
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Answer:
4.166
Explanation:
Hey guys! can someone write a summary on the topic of cloning?
Answer: Cloning describes the processes used to create an exact genetic replica of another cell, tissue or organism. The copied material, which has the same genetic makeup as the original, is referred to as a clone. The most famous clone was a Scottish sheep named Dolly
Explanation:
Answer:
Write your own work. I mean I know you did just had my answer deleted because I called you out the first time. So take the advice
Explanation:
PLZ help me I’m too slow
Black panthers are found in both africa and america. what observation would most likely cause scientists to classify these panthers as different species?
A. the american black panther does not eat the same food as the african black panther
B. the american black panther population is smaller than the african black panther population
C. the american black panther is not able to produce fertile offspring with the african black panther
d. the american black panther lives in a different habitat
Water is carried though the trunk in the sapwood.
True
False
Answer:
true
Explanation:
what are the functions of the following? (Make it simple)
Vacuole
Cell Membrane
Answer:
Vacuole- Function of vacuole is they help to maintain water and minerals balance in cell.
Cell Membrance- The functions of cell membrane are:
They keep toxic substances out of the cell.It only allows sensitive material to enter and exist in cell.13. Which of these statements about particulate matter less than 2.5 microns in diameter is true?
A. They can cause heart and lung disease.
B. They're produced from nitrogen gas (N.).
C. They're less of a threat than particulate matter that's 10 microns in diameter
D. They're the size of a human hair.
Answer:
Nitrogen Gas
Explanation:
penn foster
lesson 2
page 13
Use the table to answer the following question.
Gravity and inertia are the two forces that keep Earth in its orbit as it travels around the Sun. What would happen if the force of inertia disappeared?
A.
Earth would break apart.
B.
Earth would be pulled into the sun.
C.
Earth would leave the solar system.
D.
There would be no changes in Earth's orbital path
Answer:
D.
Explanation:
if the force of inertia disappeared there would be no changes in earth's orbital path.
the reasons is that earth would stop moving as soon as there was no longer any force being applied
Fill in the blank with the appropriate term.
1. Cartilage is a type of dense ___________________ tissue.
2. The skeleton provides attachment surfaces for __________________.
3. The skeleton maintains ________________ homeostasis.
4. When mineral levels in the blood are too high, bones absorb some of the minerals
and store them as mineral ___________________.
5. Bone matrix is crisscrossed by blood vessels and ___________________.
6. Osteoclasts dissolve minerals in bone ___________________.
7. Bone marrow is found inside the pores of ________________ bone.
8. Early in the development of a human fetus, the skeleton is made entirely of
______________________.
9. By birth, several areas of cartilage remain in the skeleton, including the ends of the
___________________ bones.
10. With the help of muscles, joints work like mechanical ___________________.
11. The surfaces of bones at joints are covered with a smooth layer of cartilage that
reduces ___________________ at the points of contact between the bones.
12. Immovable joints allow no movement because the bones at these joints are held
securely together by dense ___________________.
what are the names of the three domains
A.bacteria,archaea,eukaryotic
B.bacteria,archaea,animalia
C.archaea,plantista,animalia
D. Life,animals,plants
Answer:
A. bacteria, archaea, and eukaryotic.
Explanation:
Bacteria, archaea, and eukaryotic are the three domains of life.
The three domains system was globally implied. The three domains were Archae, Bacteria and Eukarya. The correct answer is option A.
The three domains of Carl Woese's categorization system are archaea, bacteria, and eukaryotes. The six kingdoms are archaebacteria (ancient bacteria), eubacteria (actual bacteria), protozoa, fungi, plants, and animals.
This classification system divides life into several groups based on differences in the 16S ribosomal RNA (rRNA) structure, the lipid composition of the cell membrane, and antibiotic sensitivity. The main distinction from earlier classification schemes is the division of Kingdom Monera into Archaea and Bacteria.
Therefore, the names of three domains given by Carl Woese were Archae, Bacteria and Eukarya i.e. option A.
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Discuss 3 different types of mutations that can happen
Answer:
Explanation:
Un cambio en la secuencia de bases en el ADN o ARN se conoce como mutación . ¿La palabra mutación te hace pensar en ciencia ficción y monstruos con ojos de insecto? Piensa de nuevo. Todos tienen mutaciones. De hecho, la mayoría de las personas tienen decenas o hasta cientos de mutaciones en su ADN. Las mutaciones son esenciales para que ocurra la evolución. Son la fuente principal de todo el material genético nuevo -nuevos alelos - en una especie. Aunque la mayoría de las mutaciones no tienen efectos en los organismos en que ocurren, algunas mutaciones son beneficiosas. Incluso las mutaciones dañinas rara vez causan cambios drásticos en los organismos.
Which of the following defines scion?
a. the trunk portion of a plant onto which a cutting is grafted
b. the portion of a plant remaining after extensive pruning
c. the hybrid offspring of two differing varieties of a species
d. the cutting that is grafted onto the trunk portion of a plant
Answer:
A
Explanation:
It is a plant part, not the cutting.
There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with
stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection
seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of striped frogs and unstriped frogs have the genotype ss.
OB. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
OD. Most of striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
Hi
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Should ever come back...Should ever come back....
How has genetic engineering been used by humans in the past?
Explain Newton’s First Law and give an example of it
Answer:
When a person jumps out of a moving vehicle, he falls forward due to inertia of motion. One example of Newton's first law in real life is, when you are walking with a glass filled with water, you will notice that the water spills at certain locations when you walk at faster pace. The water inside the glass will remain at rest until you move.
Explanation:
Answer:Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
An object at rest stays at rest.
Explanation:
The range of waves that includes radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays and gamma rays is called-
Answer:
The range of waves that includes radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays and gamma rays is called
electromagnetic energy/spectrum.
Parasitism, mutualism, and commensalism are all forms of symbiotic relationships. How does parasitism differ from mutualism and commensalism? A. Neither organism is harmed in parasitism. B. Three or more species must be involved in a parasitic relationship. C. Both organisms are harmed in parasitism. D. One organism is harmed in parasitism.
Answer:
The answer is D, the host is only negatively affected in a parasitic relationship.
New forms of drug-resistant bacteria can evolve quickly because
A
when a drug kills most of the bacteria, the ones left to breed are those that have a natural resistance to the drug.
B
when scientists genetically engineer bacteria they use natural selection.
C
scientists use extinction to selectively breed bacteria.
D
a drug causes mutations in the bacteria, leaving only mutated bacteria left to breed.
Answer:
A
Explanation:
is the statement true or false? plant cells have chloroplast, but no mitochondria?
Answer:
False
Explanation:
Plant cells have both but animal cells have only the mitochondria minus the chloroplast.
Bird species on secluded islands are highly vulnerable to extinction. The large,
flightless dodo birds native to the island of Mauritius were easy prey for predators.
Which of the following most likely contributed to the extinction of the dodo bird?
. ,
A The dodo bird species produced too many offspring.
B) The dodo bird species produced too few off pring.
The dodo bird species produced offspring with no unique traits.
The dodo bird species produced offspring with very unique traits.
Answer: im going to say C
If a base is deleted, a _____ mutation occurs.
A. substitution
B. insertion
C. point
D. frameshift
Answer:
Option D. A frameshift mutation occurs.
Answer:
D. frameshift
Explanation:
If a base is deleted, a frameshift mutation occurs. Hope it helps you !!
When an evolutionary biologist designs an experiment to test a hypothesis, which term is used to describe the variable that the scientist changes among his/her groups of study organisms.
Explanation:
Controlled experiment =An experiment in which only one variable is changed
Independent variable= The variable that is deliberately changed in an experiment
Dependent variable =The variable this is observed and changes in response to the independent variable
12. Which has NOT been linked to acid precipitation?
a. Toxic metal poisoning
b. Lower blood pH
c. Respiratory problems
d. Damaged monuments
Answer:
D
Explanation:
Lower blood pH has not been linked to acid precipitation. So, the correct option is (B).
What is Acid Precipitation?Acid rain is defined as rain or any other form of precipitation that is abnormally acidic, meaning that it contains high levels of hydrogen ions. Most water which include drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and averages between 4–5.
Acid rain can be caused by natural causes, such as volcanic eruptions, while acid rain can also caused by human activities such as the burning of fossil fuels, manufacturing, oil refineries, electricity generation, and vehicles, all of which release sulfur and nitrogen oxides into the atmosphere.
Thus, lower blood pH has not been linked to acid precipitation. So, the correct option is (B).
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17.
Why is it important to conserve the biodiversity of Earth?
A. to decrease the amount of global predator populations
B. to decrease the stability of major global ocean currents
C. to increase the stability of ecosystems during environmental
changes
D. to increase the amount of nonrenewable resources located in the
lithosphere
What does every living thing have to have? *
Chloroplast
Nucleus
DNA
Answer:
DNA
Explanation:
Answer:
Explanation:
Los cloroplastos son los orgánulos celulares que en los organismos eucariotas fotosintetizadores se van ocupando de la fotosíntesis. Están limitados por una envoltura formada por las dos membranas concéntricas y contienen muchas vesículas, los tilacoides, donde se encuentran organizados los pigmentos y demás moléculas que convierten la energía lumínica en energía química, como la clorofila.
El término cloroplastos sirve alternativamente para designar a cualquier plasto dedicado a la fotosíntesis, o específicamente a los plastos verdes propios de las algas verdes y las plantas. Aunque el reciente descubrimiento adiciona a más individuos en la lista, como lo es en el caso de Elysia chlorotica, que al digerir al alga Vaucheria litorea, adquiere los cloroplastos a sus tejidos, y gracias a esto, puede realizar la fotosíntesis.