Answer:
The first cells were most likely primitive prokaryotic-like cells, even more simplistic than these E. coli bacteria. The first cells were probably no more than organic compounds, such as a simplistic RNA, surrounded by a membrane.
Answer:
I agree with xXMaryaXx. I'm pretty sure she has the answer you are looking for :)
Explanation:
Two ramps of equal height are placed 1 m apart, and balls of equal mass are released from the top of each ramp. What happens to the motion of the balls when they meet in the middle?
The balls will move in a random direction.
The balls will stop.
The balls will continue moving forward.
Answer:
The ball will stop
Explanation:
I don't know much about it.
Answer:
the balls will continue moving forward
Why do the noble gases NOT form compounds readily?
Group of answer choices
They have an empty outer shell
They have a full valence shell
They have 7 valence electrons
They have no electrons
it's bc they have a full valence shell
Teniendo en cuenta problemáticas de la biología o de su aprendizaje ,pensar un tema investigar desde el enfoque cualita tivo y otro desde el enfoque cuantitativo
Answer:
Caso de estudio: El efecto de estresores ambientales sobre el comportamiento animal
- Ejemplo de un tipo de estudio cualitativo: la influencia de estresores ambientales (por ej. niveles anormales de dióxido de carbono atmosférico) sobre el comportamiento en ratones de laboratorio
- Ejemplo de un tipo de estudio cuantitativo: la influencia de estresores ambientales sobre los niveles de producción de hormonas asociadas a cambios comportamentales en ratones de laboratorio
Explanation:
Un enfoque cualitativo se caracteriza por el hecho de que la información obtenida durante dicho estudio se agrupa en categorías mutuamente excluyentes. En biología, los estudios de tipo cualitativo generalmente se caen dentro de la dicotomía observacional (es decir, presencia o ausencia del factor en estudio). En el ejemplo arriba citado, es posible obtener datos relacionados a uno o más determinado aspectos comportamentales en los individuos bajo estudio (por ejemplo, presencia o ausencia de signos de irritabilidad) en ratones sometidos a algún estresor ambiental (por ejemplo, niveles anormales de CO2 atmosférico). Por otra parte, en un enfoque cuantitativo, la información se recopila en intervalos obtenidos a partir de operaciones aritméticas (estadística paramétrica). En el ejemplo, los datos obtenidos pueden ser clasificados en intervalos referidos a los niveles hormonales. Esta información resulta útil para determinar si las diferencias en los niveles hormonales entre individuos que se encuentran en presencia del estresor ambiental son estadísticamente significativas respecto al grupo control (individuos desarrollados en un ambiente con niveles normales de CO2 atmosférico), y de este modo concluir si el estresor ambiental puede o no modificar variables comportamentales. Los estudios cualitativos permiten el uso de variables independientes las cuales son clasificadas como cualitativas (discretas).
Why does the sun appear brighter than the other stars in the universe
Answer:
because its closer and bigger
Explanation:
its just closer and bigger than all of the other stars
Which statement about how geologists study the ages of rock layers is true?
The law of superposition means that older rocks are on top.
Geologists can find the exact age of a rock by looking at its relative position.
The principle of original horizontality provides the basis for the law of superposition.
Relative age can be determined by using the concept of unconformity.
Answer: The principle of original horizontality provides the basis for the law of superposition.
Explanation:
The law of superposition in geology suggests that the rocks or sediments which are newly formed due to erosion and sedimentation of the original rocks lie above the old material. This law is supported by the principle of original horizontality according to which the newly formed sediments suspend horizontally in the layers of rocks and sediments under the effect of gravity. Thus an horizontal strata distinguishes the old and the new material.
Answer:
c
Explanation:
I took the quiz and got it right
What are the characteristics of sodium?
Answer:
it is a soft metal
it react In a low melting point with a relative density
it is luster
it is of silver and white colour
it have ductility
Which of the following best describes a process by which metamorphic rock becomes igneous rock
A.weathering into sediments, then eroding
B.compacting under pressure and cementing
C.changing shape under heat and pressure
D.melting completely, then cooling
Can someone please correct me or tell me if I’m correct please that will be lovely
Answer:
A
Explanation:
Destruction of habitat is not going to preserve the habitat.
How has genetics changed overtime
Answer:
Mutations involve changes in the arrangement of the bases that make up a gene. Even a change in just one base among the thousands of bases that make up a gene can have a major effect. A gene mutation can affect the cell in many ways. Some mutations stop a protein from being made at all.
Explanation:
Hope this helps!
Explain the role of aquaporins in the rapid movement of water through some cells
Answer:
In the early 1990s, aquaporins were discovered, and it was found that they can selectively control water movement into and out of cells. One of the critical functions of aquaporins is that while they allow the passage of water they prevent the passage of ions.
Where in the plant does photosynthesis occur? *
A. Leaves
B. Flower
C. Roots
D. Stem
Answer:
It occurs in the leaves
A. Leaves
Explanation:
Select the statement that describes the major site where antiviral action is blocked by the protease inhibitors. Select one: a. The protease inhibitors block the ability of the human immunodeficiency virus from attaching and entering the cell membrane. b. The protease inhibitors block the uncoating process of the human immunodeficiency virus by binding to protease. c. The protease inhibitors block the nucleic acid synthesis of the human immunodeficiency virus. d. The protease inhibitors inhibit the late protein synthesis and processing of the human immunodeficiency virus.
Answer:
d. The protease inhibitors inhibit the late protein synthesis and processing of the human immunodeficiency virus.
Explanation:
Protease inhibitors are antiviral agents used to fight against pathogenic viruses such as retroviruses (e.g., human immunodeficiency virus, HIV) and RNA viruses (e.g., hepatitis C virus). Protease inhibitors can drastically reduce the viral load. Protease inhibitors may target 1-virus-encoded proteases which are responsible to produce functional proteins from polyprotein precursors and 2-processing structural proteins that are required for virus assembly. Some examples of protease inhibitors include, among others, ritonavir and indinavir, which are used in patients with HIV infection.
what is an example of simple sugar
Answer:
fructoseglucosegalactoseExplanation:
Simple sugars are carbs with one (monosaccharide) or two (disaccharide) sugar molecules.
They are commonly found in nutritious whole fruits, syrups, and honey.
What is the most likely reason the bones of the reptiles were found on more than one continent
Answer: Plate Tectonics
Explanation:
If the individuals at Level IV - 1 and 2 had offspring, what do we know
could happen?
Answer:
all their kids might have the disease
Explanation:
if you do a Punnett square for the gene Xx X for female and X Y for male, then there is a 50 percent chance their kids would have the disease
What is the water table?
Answer:
C: The top of a saturated aquifer
Explanation:
The water table is the upper surface of the zone of saturation. This zone of saturation is where pores and fractures of the ground get saturated with water. It can also be simply explained as, the upper level, below which the ground is saturated.
which of the following is a matter
Answer:
gas, liquid and solid
Explanation:
hi
How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence
Answer:
scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.
so I think scientific conclusions are reliable
What do decomposers leave behind after getting their energy?
А
chlorophyll and vitamins
B
carbon dioxide and water molecules
с
elements like carbon, nitrogen and phosphorus
D
energy-rich carbohydrates
Answer:
C: elements like carbon, nitrogen, and phosphorus
Explanation:
Choice C is the correct answer.
Decomposers leave elements like carbon, nitrogen, and phosphorus behind after getting their energy. Therefore, option C is correct.
What are decomposers?Decomposers are creatures that transform dead plants and animals into humus, a material with a deep brown color. Any ecosystem needs decomposers to function properly. Plants won't obtain vital nutrients if they aren't present in the ecosystem, and they will accumulate decaying objects.
Each contributes to the food recycling process in a different way. To transform dead plants or animals into simple substances, fungi release compounds. Some of these elements are absorbed by them for growth, while others go into the soil. As they ingest dirt, earthworms break down decaying plant and animal debris.
They leave elements such as carbon, nitrogen, and phosphorus after the decomposition of matter. Therefore, option C is correct.
Learn more about decomposers, here:
https://brainly.com/question/13526806
#SPJ6
Many paleontologists hypothesize that present-day whales evolved from ancient ancestors that had four legs and walked on land. Evidence for that
hypothesis would be a sequence of whale-like fossils
A. in which the oldest fossils had flipperlike appendages and the most recent fossil had four limbs.
B. in which the oldest fossil had four limbs and the most recent fossil had flipperlike appendages.
C. that indicate that the ancestors of present-day whales were wiped out during a mass extinction.
D. that indicate that whales evolved before animals with four legs.
Answer:
B
Explanation:
If the oldest fossils showed legs and the more recent ones had only flippers, it would show the change over time.
is it wrong for parents to give female hormone pills to there little sons, without there consent?
The image depicts the impact of a mutagen on the phenotype of F1 and F2 offspring in nematodes, a common roundworm. Which
arguments can be made based on the information in the model You may select more than one correct choice.
Answer:
A, D, E
Explanation:
just did it
The arguments that can be made based on the information in the model are as follows:
The mutated DNA is a recessive allele. The mutagen altered the DNA of the worm in the parental generation. The DNA altered by the mutagen occurs in gamete cells and is passed to offspring.Thus, the correct options for this question are A, D, and E.
What is Mutagen?Mutagen may be characterized as a type of agent that possesses the capability to induce mutation within the genetic segment of living organisms. Mutagens are of two types, they are:
Physical mutagens: UV radiations.Chemical mutagens: Chemicals like ethidium bromide.According to the context of this question, mutation can only be inherited from parent to offspring, if it is induced within the gamete cells of parents. While during the course of life, the mutation also induces in the genomic sequence of an individual.
Therefore, the correct options for this question are A, D, and E.
To learn more about Mutation, refer to the link:
https://brainly.com/question/17031191
#SPJ2
Question 9
After 60 days, 100g of a certain element has decayed to only 12.5g.
What is the half-life of this element?
A.) 20 days
B.) 30 days
с.) 8 days
D.)5 days
What are herbaceous an is it a flower?
Answer:
Herbaceous plants are plants that have non-woody stems. (Like annuals and biennials).
Is the adaptation physical or behavioral. Humpback whales migrate north from Antarctica to breed in warmer water.
Answer:
okay so im going with a behavioural adaptation becasue if it was physical wouldnt that mean that they would change their appearance bc of there adaptation?
okie peace
Explanation:
Answer:
This adaptation is behavioral
Explanation:
why are plate movements of convection important in earth science
After an outbreak of an illness, scientists use epidemiology to try to find *
A. the origin of a disease.
B. how the disease spreads.
C. how to prevent the disease from spreading.
D. all of the above
Answer:
D. all of the above
Explanation:
Two dogs pull on a rope. One dog pulls with a force of 5 N to the left, and the other dog pulls with a force of 3 N to the right. What is the result?
A.The rope remains in place.
B.The rope moves to the left.
C.The rope moves to the right.
D.The rope has a balanced force applied to it.
Answer: It's B because there is more force pulling to the left.
Hope it helps. Brainliest?
Color blindness in humans is a sex linked trait. If the father has normal vision (XcY), and the mother is a carrier for the color blindness trait (Xc Xc), which percentage represents the chances of their sons being color blind?
A) 25%
B) 50%
C) 75%
D) 100%
what is the next step in the scientific method, following forming a hypothesis?
A. Analyzing the data
B. stating the question
C. conducting an experiment
Hi there!
The answer to this question, I believe, would be C, conducting an experiment. When you make your hypothesis, you have already stated your question, analyzed the data, and formed a logical assumption that you need to prove is true. Your hypothesis is your logical assumption; therefore, you ought to experiment and see if your assumption - your hypothesis - is correct.
Hope this helps! :)
Answer:
Conducting an experiment
Explanation:
