The movement by diffusion of charged ions such as Na+ and Cl- across the plasma membrane is blocked by the lipid bilayer in the middle of the plasma membrane. true of false?
Answer:
True.
Explanation:
As we know, the plasma membrane of the cells is semi-impermeable, that is, it only allows the passage of some molecules in sizes and specific burning nature. Although the Na + and Cl- molecules are very small, they are polar, electrically charged molecules. These molecules are not well seen by the membrane, which does not allow them to pass into the intracellular medium.
Which correctly identifies characteristics that protists share with animals?
A. Motile, Prokaryotic, Multicellular
B.Motile, Reproduce sexually, Photosynthetic
C.Motile, Multicellular, Photosynthetic
D. Eukaryotic, Motile, Reproduce sexually
Answer:
The answer is C
Explanation:
This state of matter has NO definite shape and NO definite volume
Group of answer choices
gas
solid
liquid
Answer:
Gas is the state of matter has NO definite shape and NO definite volume.
HELP PLEASE!!!
Why is it important to preserve fossils?
Fossils are used to determine how many meteors hit Earth.
Fossils are used to determine future climate.
Fossils provide evidence of the conditions of Earth a long time ago.
Fossils are used to help determine the age of the Sun.
Answer:
Fossils provide evidence of the conditions of Earth a long time ago.
Explanation:
A fossil is defined as "the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock." The remains of a prehistoric organism can provide evidence of conditions on Earth from a long time ago.
How does the parasite control the host?
I did research on these things when I was researching the "Dad" series on YT
I will use the Ophiocordyceps Unilateralis parasite as an example. The Ophiocordyceps Unilateralis (Or as I call it, the zombie virus) is a fungus that infects an ant near it. While the fungus is in the ant, it will slowly control it's bodies so it has no will over it, and hijack it's mind. Once completed, it basically has full control of it's host after a certain period of time, and making the ant die later. Before death, however, it will produce another fungus from the ant, infecting the next insect.
The diagram represents part of a process that occurs in cells.
Which cellular process must occur before the one illustrated above?
Select one:
a. meiosis
b. replication
c. transcription
d. translation
Answer:
C. Transcription
Explanation:
The diagram shows translation, where mRNA is translated by a ribosome to create a specific amino acid sequence.
Transcription must occur before translation, because it is the process where mRNA is made.
In transcription, mRNA is transcribed from DNA, then it is sent out of the nucleus and into the cytoplasm.
Then, the mRNA goes to a ribosome in the cytoplasm, allowing for translation to occur.
So, the correct answer is C. Transcription
Traits that are determined by more than one gene are called what?
What is an important factor that could make a renewable energy source a realistic alternative to nonrenewable energy sources?
A. Stop the use of low-carbon, low-energy yield brown coal in power plants, and switch over to more efficient high-carbon, high-energy yield hard coal.
B. Continue to mine coal at current rates, but use the coal to create new types of photovoltaic cells for use in solar panels on large solar farms.
C. Decrease the cost of building wind turbines to decrease the initial cost of wind energy so that it is closer to the cost of energy currently produced from burning coal.
D. Increase the volume of natural gas extracted from wells through hydraulic fracturing to decrease the amount of coal that has to be mined for combustion.
Answer:
C.
Explanation:
Renewable energy sources (e.g., solar energy, wind energy, hydrothermal energy) represent the most important alternative to reduce global warming effects due to the use of fossil fuels. However, the use of renewable energy sources is nowadays more expensive than those derived from fossil fuels. For example, it has been calculated that solar energy costs around 20 cents more per KWH than coal or gas. Wind energy is even more expensive than solar energy. In consequence, it is expected that in the near future renewable energy production costs decrease in order to make this type of energy source cheaper than fossil fuels.
What is the purpose of a dichotomous key? (Select all that apply.)
to find a common ancestor
to identify organisms
to show the evolution of organisms
to show evolutionary relationships between organisms
MORE THAN ONE COULD BE THE ANSWER!!
The gene to make what vitamin did scientists put into rice to make it
more healthy?*
Vitamin A
Vitamin C
O Vitamin D
List 3 characteristics that all living things share.
Answer:
they all excretethey all grow and developthey all reproduceDNA is coiled into chromosomes in a cell’s ???
.
Yes, It indeed is inside a cell's nuculeus. You are correct
Answer:
nucleus
Explanation:
Is the following statement TRUE or FALSE?
Abiotic factors do NOT affect which organisms can live in a particular
biome.
True
False
Answer:
False
Explanation:
Abiotic factors non-living things that shapes the environment and is needed for organisms to survive. For example, water is an abiotic factor, and is needed in an organism's home.
How are ATP molecules used to power cell processes and what happens to ATP when it is used?
Answer:
Explanation:
ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation). This transfer is carried out by special enzymes that couple the release of energy from ATP to cellular activities that require energy
HOPE IT HELPED YOUAinhoa belonged to the rock club. She was learning about different types of rocks. Which of the following rocks is formed through squeezing and heating? *
A.Crystal Rock
B.Igneous Rock
C.Metamorphic Rock
D.Sedimentary Rock
Answer: Metamorphic rock.
The picture below demonstrates which type of chromosome mutation?
Answer:
I feel like it's a Translocation Mutation
Explanation:
( :
Which two compounds are made during the light reactions and used to fuel the Calvin cycle?
ATP and NADP+
ATP and NADPH
ADP and NADPH
ADP and NADP+
Answer:
ATP and NADPH
Explanation:
The light dependent reactions harness energy from the sun the creat ATP and NADPH
Incomplete or imperfect flowers indicate varieties of plant that cannot reproduce.
False
True
Answer:
false
Explanation:
Which is a unicellular fungus?
A Slime mold
B Mushroom
C Yeast
D none of these
Explanation:
Unicellular fungi are generally referred to as yeasts. Saccharomyces cerevisiae (baker's yeast) and Candida species (the agents of thrush, a common fungal infection) are examples of unicellular fungi. Example of a unicellular fungus: Candida albicans is a yeast cell and the agent of candidiasis and thrush.
Margaret wants to create a comparison for hormones to help her understand their function better. Which of the
comparisons below is the best?
A hormone is like an e-mail with instructions from someone's boss,
D A hormone is like a key for a lock,
D A hormone is like a lock that needs a particular key
O A hormone is like an employee who follows instructions from the boss.
Answer:
"A hormone is like an e-mail with instructions from someone's boss" is the best description to define a hormone.
Answer:
A
Explanation:
Match the definition to the correct term.
Heredity is the passing of traits from parents to offspring.
What do you mean by heredity?Heredity is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.
Heredity explains why offspring resemble, but are not identical to, their parents and is a unifying biological principle. Heredity refers to specific mechanisms by which characteristics or traits are passed from one generation to the next via genes.
Hereditary theory is the idea that many physical traits can be passed from one generation to the next by DNA, by passing on the set of instructions or genes in your DNA to your offspring.
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What is the direct effect of oxygen to sea otters
Answer:
It would be difficult to recreate the exact conditions of the chemical release elsewhere.
Explanation:
Undifferentiated human cells are called _____.
ASCs - Adult stem cells are the undifferentiated human cells
Explain the importance of mitosis of cells in a skinned knee and during the growth of a plant.
Answer:
The importance for mitosis in a skinned knee is, to develop and produce new cells, healing the skin
It is importance for plant growth, as to produce new cells for the development, increasing the number of cells and increasing the height of the plant.
It helps in the repair of skinned knee and also promotes the growth of the plant by participating in the meristematic activity.
Mitosis is a process in cell division cycle in which the parent cell divides into two daughter cells and the daughter cells receive the same number of chromosomes as that of the parent cell that is why it is called as reductional division. The mitosis occurs in the somatic cells of the plants and animals. In the injured or skinned knee it will help in division of normal healthy cells so as to repair and replace the worn and injured cells hence, it will help in recovery of the injured knee. Active cell division via mitosis and differentiation occurs at the meristematic regions of the plant at the stem and root regions.It helps in increase in number of cells in the growing regions of the plant body hence, support growth of the plant. Hence, mitosis plays an important role in the repair of skinned knee and during growth of a plant.Learn more about mitosis:
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This picture below shows the fossil of three species of mosasuar, large marine reptiles that are now extinct what do similarities in these mosasaur indicate
The similarities in the fossil fuels of the given species of the mosasaur indicates a close relationship between the organisms.
The fossil records of the extinct organisms are used for studying the characteristics of their genome and it also helps to understand the similarities and differences between the different species of the same organism which have become extinct.
Several fossil records of thousands of organisms have been recovered and studied by the paleontologists till date. The study of these fossils have suggested that the organisms that have become extinct were very different from the organisms that are found to be present today.
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A section of our DNA that codes for a specific trait is called a....
environmental factor
genetic factor
gene
chromosome
Answer:
Gene, a part of DNA that determines the trait of individual characteristics
Explanation:
Which of the following is NOT a factor that affects wind?
Answer:
i think its friction or A
Explanation:
Why does the moon have a stronger influence on the Earth, than the sun, causing tides?
a. The moon is much, much closer to the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
b. The moon is larger than the sun, causing a greater gravitational pull on the Earth and Ocean.
c. The moon is further away from the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
Answer:
The Correct Answer Is A:
The moon is much, much closer to the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
Explanation:
sure the sun is wayyy bigger than the moon,
but the fact the the moon is way closer makes a big impact on the earths surface tides.
Do you think a food chain,food web, or energy pyramid is most useful in studying feeding relationships between organisms in an ecosystem? justify your answer.
Energy Pyrenees because it gives you representation to show which organisms form the lowest to the highest and which one contains the most Energy so it would help on how the relationship between organisms depending on the level of the ecosystem.
Which of these is the source of the variation in wing color within the Peppered Moth population or in other words, how do they get their wing color?
A.natural selection
B.genetic variation
C.pollution
Answer: Genetic variation
Explanation: It could lead to natural selection, but natural selection isn't the cause. Many years down the road you could see a particular variation having a higher population, which is the result of natural selection/survival of the fittest via better camouflaging from predators.