Answer:
Lysosomes
Explanation:
Lysosomes also break down old cell parts and release the substances so they can be used again.
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Darwin used the term 'Natural Selection' to be
him explain his theory of evolution What did
Darwin mean by the term Natural Selection?
!!pleas help!! :((
Answer:
Resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Darwin meant this my term 'Natural Selection'
Answer:
He defined natural selection as the "principle by which each slight variation, if useful, is preserved".
Explanation:
Darwin's Theory of Evolution by Natural Selection
More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.
A fox population used to have white fur. In recent years, tan and light
brown colors started to appear in the population.
Which option would cause such a change?
Answer:
Natural Selection or Adaptation
Explanation:
Because they change their fur color so predators cant find them as good
Scientists took some cells and grew them in a Petri dish with nutrients. After a while, the cells grew to form a thin layer and stopped when they came in contact with other cells. What does this tell you about cells and the cell cycle?
Answer:
Contact inhibition.
Explanation:
Contact inhibition is a response of a cell in which cell growth stopped when it touches or comes in contact with another cell. When the normal and healthy cells grows and touching other cells, the cell receives a red light signal to stop its growth so the cell stop its growth while on the other hand, if there is no contact with other cell the cell continues its growth.
The three states of matter are modeled in the heating curve seen here. Identify ALL of the changes that must take place for a substance to change state, from a solid to a gas
A) Pressure increases
B) Temperature increases.
C) Particles spread apart.
D)Kinetic energy increases.
E) Particle motion increases.
Answer: B, C, D, E
Explanation:
In a generalised manner B, C, D and E takes place for a substance to change state, from a solid to a gas.
What is phase transition?The physical process of changing a medium's state from one to another is known as a phase transition. The phrase is frequently used to describe transitions between the three fundamental states of matter—solid, liquid, and gas—and, in rare instances, plasma.
Heat must be used to provide energy for molecules to go through phase change. The intermolecular connections that keep the substance in its current state are broken using this energy. When the element receives enough energy, the phase change will occur.
Without going through the liquid state, sublimation is the process by which a substance moves straight from the solid to the gas state.
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Question 1 of 10
What is a major drawback of using fossil fuels?
A. They release carbon dioxide.
B. They destroy greenhouse gases.
O c. They generate electricity.
O D. They cool the planet.
Answer:
A.) They release carbon dioxide!! Why? Carbon dioxide is a greenhouse gas, and a lot of it is released by burning fossil fuels. This warms the planet and triggers climate change. I just did this a p e x biology quiz, so I would know. I got it correct :D.
As DNA is unzipping this enzyme comes in and begins synthesizing mRNA
A. RNA primase
B. RNA polymerase
C. DNA primase
D. DNA polymerase
WILL MARK BRAINLIST!!! only for correct answer
NEED CORRECT ANSWER ASAPPP
Answer:
D. 4
Explanation:
Reflection can be defined as a phenomenon which typically involves a change in the direction of a ray of light or waves as it falls on a smooth surface.
Simply stated, reflection occurs when a ray of light or wavefronts bounces off a smooth surface.
From the diagram provided above, the thin beam of light which illustrates reflection is the fourth because as it hit the surface, it bounced back to the medium from which it was originally propagated with.
The model of DNA is known as a ___________ because it is composed of two _______ chains wrapped around each other.
Compare and contrast the elevated temperature of someone who is exercising vigorously and someone who has an infection
Answer:
Due to muscle contraction and fighting of white blood cells.
Explanation:
Exercise increases the temperature of body because about 20% of the energy produced in contracting muscles is used for muscle contraction while the remaining 80% is converted into heat energy, as a result body's temperature increases whereas a person who has infection also experience high body temperature because the body work faster to fight against the infection that leads to high temperature.
Would the control group not receive the treatment, or receive the same treatment that has been used before?
Answer:
The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment).
How many reactants are in the fermentation chemical equation?
Rapid reproduction is an advantage of which process?
A. gamete formation
B. sexual reproduction
C. asexual reproduction
D. chromosome duplication
Answer:
I believe the correct answer is asexual reproduction because they can reproduce fast, and with multiple offspring. Hope this helped you!
6. A pink snapdragon is crossed to a white snapdragon. What is the probability of getting a red snap dragon
Which set of atoms can be found in ALL carbon-based molecule?
Answer:
All organisms are made of four types of carbon-based molecules: carbohydrates, lipids, proteins, and nucleic acids. These molecules have different structures and functions, but all are formed around carbon chains and rings.
Carbon-based molecules have three fundamental structures—straight chains, branched chains, and rings.
What is the role of oxygen in photosynthesis
Answer:
as fare as I can remember oxygen is actually a waste product that is produced at the end of a plant's photosynthesis cycle
Explanation:
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50 points!!!!
Which of the following are true of enzymes?
Choose all that are correct
Specific enzymes can only facilitate one or two reactions.
Enzymes are not changed by facilitating a reaction.
Enzymes lower the activation energy of a reaction.
Each specific enzyme can facilitate many different reactions.
Enzymes are specialized proteins.
Enzymes raise the activation energy of a reaction.
Answer:
the 2nd one the 3rd one the 5th one
Explanation:
Why are predators the smallest group at the top in the energy pyramid
Answer:
Predators eat prey, technically speaking.
Explanation:
The lowest and largest group takes the most energy cause it's first base. Going up the chain, the second group takes that energy from the first. Then the third, takes the energy from the second and so on. It's a cycle, and the the smallest group at the top of the energy pyramid will be given the less energy that travels throughout the pyramid.
I hope this makes sense.
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what does a Cell membrane look like
The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container.
Explanation:
The Rio Grande river flows through the South Texas Plains ecoregion of Texas. The river is a major source of water for cities and farms in the area. Sometimes, so much of the Rio Grande's water is used that the river does not reach the Gulf of Mexico. How does the loss of river water affect ocean plants near the mouth of the river? A. Less sediment is deposited in the soil. B. The ocean plants cause more weathering. C. More algae grows and competes for resources. D. The slow water causes more erosion.
Answer:
A. Less sediment is deposited in the soil.
Explanation:
Less sediment is deposited in the soil if there is less amount of water receives by the ocean plants because river water brings minerals with them from passing through the mountains to the ocean. These sediments brings nutrients which are necessary for the ocean plants for their growth and development so we can say that less sediments are deposited in the soil of ocean plants due to less river water.
which characteristic of living organisms is responsible for the production of oxygen in the leaf of a plant exposed to sunlight.
Answer:
Photosynthesis.
Explanation:
Photosynthesis is a characteristic of living organisms and it is typically responsible for the production of oxygen in the leaf of a plant exposed to sunlight. It is a chemical process used by plants to obtain food from sunlight.
All living organisms such as plants and animals require energy to function properly (life activities). Thus, the cell organelle where energy from nutrients is released is generally referred to as mitochondria. Animals and plants retrieve energy using mitochondria to do cellular respiration because they typically act like a digestive system by taking in nutrients, breaking them down and obtaining energy rich molecules for cell-life activities.
Cellular respiration can be defined as a series of metabolic reactions that typically occur in cells so as to produce energy in the form of adenosine triphosphate (ATP). During cellular respiration, high energy intermediates are created that can then be oxidized to make adenosine triphosphate (ATP). Therefore, the intermediary products are produced at the glycolysis and citric acid cycle stage.
Delia is teaching her sister about important molecules in the body.
She tells her sister that one molecule provides a set of instructions that determines traits, such as eyecolor or hair color. Which molecule is Delia describing?
Pls help !!
Answer:
answer is A
Explanation:
help, please. this is for a friend to help me with.
Explanation:
I hope this helpppppppppppp
Answer:
14. To cause cancer, proto-oncogenes require 2 allele(s) to be mutated and therefore are considered recessive. The mutation results in a gain of function.
15. To cause cancer, tumor suppressor genes require 2 allele(s) to be mutated and therefore are recessive. The mutation results in a loss of function.
A patient named Roberto is grieving because he noticed that the money he has saved all his life is not going to his family but is instead going to his medical bills. He is also worried that he will eventually become a burden on his family. His nursing assistant called a social worker to help him cope with the emotional strain of his situation. Which need did the nursing assistant help with?
physical comforts
spiritual comforts
social needs
financial needs
Answer:
physical and social
Explanation:
physical because the social worker will help with talking to him and making him feel better
social because he might get money help
Describe the contributions of Schlieden and Schwann to the cell theory.
Schwann - In 1839, he cells are the basic unit of animal structure
Schlieden - In 1838, he discovered cells are the basic unit of plant structure
Hope this helps
What is the number one food crop that isn’t harvested by combines?
Answer:
Vanilla
Explanation:
Sometimes that manual labor shows up in the price of the food; sometimes it doesn't ... We thought there would be an easy answer to that, but there isn't. ... This spice is among the most expensive in the world; the biggest producers are Italy, Iran and Spain ... Those forces combine to lead to the labor issues.
Sexual reproduction in animals depends on the production of gametes.
Which of these processes produces gametes in animals? *
Mitosis
Fertilization
O Meiosis
Binary fission
The process that produces gametes in animals is meiosis.
What is MeiosisMeiosis is a specialized type of cell division that occurs in the reproductive cells, or germ cells, of animals. It involves two rounds of cell division, resulting in the production of four haploid daughter cells, each with half the number of chromosomes as the parent cell.
During meiosis, the genetic material is shuffled and recombined through processes such as crossing over and independent assortment. This genetic variation contributes to the diversity of offspring produced through sexual reproduction.
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2. True or false. Trees have to attract bark from other sources. *
O pol
True
False
can a baby that has blood type AB have one parent that is type O?
Answer:Yes they can. An AB parent can indeed sometimes have an O child. But it is by no means common. In fact it would be fair to say that it is exceedingly rare.
A period in history in which human transitioned from human power, animal power and hand made goods to fissile fuel power, hydro/hydroelectric power and machine produced goods.
A. The industrial revolution
B. The agriculture revolution
C. The medical revolution
D. The American revolution
what could happen to an organism when it’s dna mutates