4. What is the name of the membrane in blood cells that allows for certain
substances to pass through it, but not others? *
Cell wall.
Semipermeable membrane.
Cell membrane.
plasma membrane

Answers

Answer 1

Answer:

It is Plasma Membranes.

Answer 2

Answer: Plasma membrane

Explanation:

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Related Questions

PLEASE HELP

If guinea pigs, black fur is dominant over white fur. Which of the following alleles could represent the gene for white fur? Hint we use the letter of the dominant trait
B b W or w?

I strongly belive its W Please let me know

Answers

Answer:

...

Explanation:

describe what happens to the chromosomes in the anaphase telophase. Enter your answer in the space provided.

Answers

During anaphase the chromosomes are separated on the metaphase plate, and pulled apart to opposite poles. After the chromosomes reach the pole that is intended the telophase will began.

3. What does the heading
represent?

Answers

Do you have a photo of the problem? :)

Which of the following statements is true of both binary fission and mitosis?

a.) They both produce four daughter cells with one set of chromosomes.
b.) They both produce two daughter cells with complete DNA.
c.) They both are used primarily for asexual reproduction.
d.) They both involve the division of a single nucleus.

Answers

Answer:

i think c is the right answer

Answer: B

Explanation:

When a warmer stream flows into a cooler lake, what happens? please answer will mark brainelist​

Answers

Answer:

it steams cuz of the hot mixing with the cold

Carbon, nitrogen, and phosphorus are examples of what?

Answers

Answer:

A natural process in which elements are continuously cycled in various forms between different compartments of the environment (e.g., air, water, soil, organisms).

Hope this helps!

Answer:

Carbon Cycle. Nitrogen cycle. Photsphorus cycle. Water cycle. The carbon cycle includes the uptake of carbon dioxide by plants through, its ingestion by animals and its release to the atmosphere through respiration and decay of organic materials.

Explanation:

A natural process in which elements are continuously cycled in various forms between different compartments of the environment (e.g., air, water, soil, organisms). Examples include the carbon, nitrogen and phosphorus cycles (nutrient cycles) and the water cycle.

Describe the phases of the moon.

Answers

Answer:

Here

Explanation:

Answer:

Waxing Cresent ( when the moon is growing in size to reach it's maximum fullness), FIrst Quarter (When the moon is one quarter full), Waxing Gibbous (When the moon is over half full), Full Moon (When the moon is completley full), Waning Gibbous (When the moon is almost half dark), Last Quarter (When the moon is half dark), Waxing Cresent (When the moon is a small cresent shape in the sky), New Moon (When the moon is completley dark)

Explanation:

Hope this helps!! :)

Please help me with #6 please

Answers

Answer:

The sodium-potassium pump system moves sodium and potassium ions against large concentration gradients. It moves two potassium ions into the cell where potassium levels are high, and pumps three sodium ions out of the cell and into the extracellular fluid.

Explanation:

What is the role of adenosine triphosphate (ATP) within a cell?

A) Release carbon dioxide
B) Biological molecule that stores energy
C) Use glucose
D) Controls chemical reactions ​

Answers

Answer:

Its B. Biological molecule that stores energy

The answer is B.
Reason: ATP is essentially energy. It is a molecule that stores said energy from the cell.

During an experiment to determine if people with more symmetrical body features have a lower incidence of disease, a researcher first measures the length of several bones in the subject's hands and arms. The device used to measure length does not display a readout of the measurement taken. Instead, a wire connects the measuring device to a computer that records the data. The computer monitor is kept out of sight of the subject and the researcher. Why is such an elaborate device used?a. So that the subject will not know if he or she is part of the control group.b. So that the experiment will be repeatable.c. So that the subject will not be injured by the experiment.d. So that the identity of the subject will remain anonymous.e. So that the measurements are not biased by the researcher.

Answers

Answer:

e

Explanation:

The main reason such an elaborate device was used would be to eliminate any element of bias by the researcher.

It is important to eliminate biases when taking measurements so as to ensure the accuracy of the data and the overall outcome of the experiment. If a simpler device had been used in which the researcher manually records the length of the bones, it is possible to knowingly or unknowingly introduce biases or random error into the experiment which will impact the integrity of the data and the outcome of the experiment.

The correct option is e.

When we breathe, we inhale oxygen and release carbon dioxide. What cell process does our body use the oxygen for?

A. Photosynthesis

B. Cellular respiration

C. Osmosis

Answers

Answer:

Cellular respiration

Explanation:

This is because if you see Photosynthesis is used for plants to get a food source from the Sun. Osmosis is the movement of chemicals from a less converted membrane to a more. I think i said that wrong but. I am sure it is cellular respiration which is the despirsion of waste products. So yeah Answer is Cellular respiration

Write the common food chain of a pond ecosystem.​

Answers

Explanation:

In a freshwater aquatic ecosystem like a pond, the organisms in the food chain include algae, small animals, insects and their larvae, small fish, big fish and a fish-eating bird or animal

pls mark brainliest

Answer:

Thanks for the points <3!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Explanation:

tkhthy

Identify the structure labeled X in the diagram

Polypeptide (protein) made up of amino acids

DNA make up of nucleotides

DNA made up of amino acids

Messenger RNA made up of nucleotides

Answers

Answer:

first one

Explanation:

DNA is what is in the nucleus not outside and mRNA is the bottom

When you mix salt with water in a beaker, the salt is no longer visible. What
happens to the salt?
A. The salt changes state from a liquid to a gas.
B. The salt reacts with the water to make a new substance.
C. The salt dissolves in the water.
D. The salt is destroyed by the water.

please help, i’ll mark brainliest if you get it right! please please only answer if you know the answer though, don’t guess i’m taking a test and i can’t fail as it’s the last one before the quarter ends ( tomorrow ) id appreciate it!! thank youuu

Answers

Answer:

C. The salt is dissolved by the water

Explanation:

When ionic compounds dissolve in water, the individual ions separate and get surrounded by water molecules—a process called solvation. Because the salt ions are charged, they dissolve much better in a polar solvent, which is also slightly more charged than a nonpolar solvent

Hope this helped, Have a Great Day!!

Which of these organisms would most likely be found at the top of an energy pyramid?
a clams - a primary consumer
b. sardines - a primary consumer
c. sharks - a secondary consumer
d. kelp - a primary producer

Answers

i think it would be C because they are carnivores

The energy pyramid is a diagram that shows the flow of energy between trophic levels in an ecosystem. In an energy pyramid, the energy flows from producers to consumers.

The organisms that would most likely be found at top of the energy pyramid are sharks (secondary consumers).

In an energy pyramid, the energy flows from producers (e.g., plants) to primary consumers (eg., herbivores).

Subsequently, the energy then flows from primary consumers to secondary consumers (e.g., carnivores) and so successively.

In an energy pyramid, the amount of available energy decreases as it moves through subsequent trophic levels.

In conclusion, the organisms that would most likely be found at top of the energy pyramid are sharks (secondary consumers).

Learn more in:

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Which is the best hypothesis for the scientific question “How does light intensity affect the rate of photosynthesis?”

Answers

Answer:

A hypothesis for this question could be: If there is more light intensity on a plant then, there would be higher rates of photosynthesis.

Explanation:

Answer:

The answer to this question would be C.) If the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease.

Explanation:

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what are nutrients and water absorbed by?

Answers

Answer

Your lower intestine of your body

*
How many copies of DNA are made when replication is complete?
14 points
O A4
B3
C2
D 1

Answers

C.2
.........................

If Iron (+3 lon) were to bond with Oxygen, what would be the Chemical Formula:
Fe2O3
Fe20
FeO
Fe302

Answers

The answer is Fe2O3

What is the theory of spontaneous generation? Please give an example. Thanks!!!

Answers

Answer:

cell theroy Explanation:

they used to think cells just until the discoverd  cells come from pre existing cells

The diagram shows a reflex arc. Name parts P and Q shown on the diagram above.
Please help.

Answers

Answer:

P - synapse

Q - Relay neuron

Explanation:

A synapse, easy to remember as a neural junction, is the site where the transmission of electric impulses occurs. This occurs between two neurons or between a neuron and a gland or muscle cell. So in this scenario when we poke the finger it fires an electric nerve impulse that gets to the P spot that is a synapse and gets transmitted to the relay neuron. A relay neuron is there to receive the signal from one neuron and then transfer it to another interneuron resulting in the signal being received by a motor neuron so that we can react to the stimulus.

What sea creature is this?

Answers

Answer:

i wanna say a stingray but im not 100% sure

Explanation:

That is a stingray.

Which of the following characteristics apply mainly to invertebrates? (Choose all that
apply.)
A.) many different body plans that display all types of symmetry
b.) backbone and inner skeletal structure
c.)lack of skeletal structure in their bodies
d.)limited to no development of organ systems

Answers

Answer:

c and d

Explanation:

because they are cold blooded n have no back bone

The characteristics that mainly apply to invertebrates are as follows:

Lack of skeletal structure in their bodies.Limited to no development of organ systems.Many different body plans display all types of symmetry.

Thus, the correct options are A, C, and D.

What are Invertebrates?

Invertebrates may be defined as those forms of living organisms that lack a backbone, spinal cord, and central nervous system.

Invertebrates generally have bilateral or radial symmetry. They can be asymmetrical as well. They only have either incomplete or complete digestive systems. Invertebrates completely lack a skeletal system.

Therefore, the correct options for this question are A, C, and D.

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Chemically speaking, enzymes are composed of chains of _________________, and they are considered to be a type of__________________.

Answers

Answer:

chains of amino acid;

type of protein

What water cycle process moves water from land to streams

Answers

The answer should be runoff.

Answer:

The answer would be runoffs

Explanation:

Although water coming from land to streams isn't directly tied to the water cycle, runoffs are due to gravity.

May I have brainliest please? :)

What happened when Earth's first atmosphere collapsed? Will mark you as brainliest!

- it created oxygen

-it formed the oceans

-it triggered an ice age

-it fell as rain, watering the earliest plants

Answers

Explanation:

solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe. The lack of atmosphere would chill the Earth's surface.Plants and land animals would die

How does affluence impact the environment?

Answers

Answer:

Such a lifestyle leads to unnecessary depletion of resources. Such affluence has terrible consequences for the environment. Affluent societies have the financial means to invest in technological research that can reduce pollution and other forms of consumer waste. Wealthier nations tend to have cleaner air and water.

Hope I helped! :)

Besides helping to discover the structure of DNA, describe two other contributions Rosalind Franklin made to the world of science.​

Answers

Answer: Rosalind Franklin discovered the density of DNA and, more importantly, established that the molecule existed in a helical conformation. Her work to make clearer X-ray patterns of DNA molecules laid the foundation for James Watson and Francis Crick's suggestion that DNA is a double-helix polymer in 1953.

Explanation:

Rosalind Franklin made numerous contributions to science in addition to helping to discover the structure of DNA, and in the field of virology, in coal-based materials, by using X-ray crystallography, in agriculture, etc.

What is the contribution of Rosalind Franklin?

She was one of the greatest scientists who made significant contributions to the field of DNA by using X-ray crystallography, and apart from that, she also made contributions to the field of virology. As X-ray diffraction facilitates the study of the structure of viruses such as the tobacco mosaic virus and the polio virus and helps in understanding the replication of viruses, it is also helpful in the study of the structure of coal and other carbon-based materials.

Hence, Rosalind Franklin made numerous contributions to science in addition to helping to discover the structure of DNA, and in the field of virology, in coal-based materials, by using X-ray crystallography, in agriculture, etc.

Learn more about Rosalind Franklin here.

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In this project, you will be designing three graphs based on the information given to you in tables. You must organize the information into graphs and make them clear and understandable. For help on the graphs, go back and read the section in your text on graphing. If you are creating a digital graph your teacher may provide resources or tools to guide you through the digital application. When submitting your graphs make sure to answer the following question for each graph.

Did you finish your line or bar graph?
Did you draw your graph or create a digital graph?
Describe your results.

Did you finish your pictograph?
Did you draw your graph or create a digital graph?
Describe your results.

Did you finish your pie chart?
Did you draw your chart or create a digital chart?
Describe your results.

Answers

Answer:

I tried but I could not get if

Explanation:

try Google or any other app

Brainliest to the correct answer...plz anser if you know and not just for points

Answers

Answer:

i would say false because tree slow down erosion not speed it up

Explanation:

hope this helps :)

Correct answer?
False
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