Biology High School

a b c d ? please help me :)

Answers

Answer 1

Answer:

Explanation:

its a semi permeable membrane. it chooses what can go in and out so nothing bad happens.

Answer 2

A would be the correct answer

Related Questions

Which substance is harmful in drinking water at any amount?

A) Nitrates
B) Pesticides
C) Charcoal
D) Coliform Bacteria

Answers

Answer:

Explanation:

Its a poison stay away from it no matter how much it is

The answer should be a or b .

Which of the following
perform cellular respiration?
(2A)
All living things
Only animals
Only humans and plants
Only plants

Answers

The answer to this question would be ONLY PLANTS because it take place in the cells of organisms

Which researcher proposed that dreams are a chance for problem solving? A. Sigmund Freud B. Matthew Wilson C. Rosalind Cartwright D. J. Allan Hobson

Answers

Answer:

The answer is Rosalind Cartwright.

Explanation:

A researcher who proposed dreams which are a chance for problem-solving is Rosalind Cartwright. Thus, the correct option for this question is C.

What is Problem-solving?

Problem-solving may be defined as an instance of illustrating a problem that significantly determines the consequences of the problem along with identification, prioritization, and selection of alternatives for a solution; and implementing a solution.

Rosalind Cartwright was a neuroscientist who proposed the theory of dreams with respect to the chance for problem-solving. She hypothesized the complete mechanisms of dreaming which is particularly based on REM sleep. It is a way to process emotions, experienced during the day.

Therefore, a researcher who proposed dreams which are a chance for problem-solving is Rosalind Cartwright. Thus, the correct option for this question is C.

To learn more about Rosalind Cartwright, refer to the link:

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In a healthy ecosystem, which trophic level should
have the most energy? Why? *WILL MARK BRAINLIEST*

Answers

Answer:

Producer(plants)

Explanation:

They can produce there own energy and they help all of the other animals stay alive.

in a healthy ecosystem, the trophic level that should have the most energy is the producer.

WHAT IS TROPHIC LEVEL:Trophic level of an organism refers to the position of the organism in the flow of energy in an ecosystem.

Organisms feed on one another in an ecosystem to obtain energy needed for their metabolic activities.

More energy is contained in lower trophic levels than that of higher trophic levels. This means that, according to this question, more energy will be in the producers as the lowest trophic level.

Therefore, in an healthy ecosystem, the trophic level that should have the most energy is the producer.

Learn more about trophic level at: https://brainly.com/question/13267087

why consumers would want GMO?

Answers

Answer:

Probably the taste,looks and/or freshness of the food/drink

Which molecule can freely diffuse through the cell membrane?

Oxygen

Nitrogen

Hydrogen

Glucose

Answers

nitrogen

explanation:

It would be nitrogen

Help please!!!!!!!!!!!!!!!!!!

Answers

Answer: A

Explanation:

What is Cellular Respiration and what is the formula for it?

Answers

Answer:

Summary. Aerobic respiration is the aerobic catabolism of nutrients to carbon dioxide, water, and energy, and involves an electron transport system in which molecular oxygen is the final electron acceptor. The overall reaction is: C6H12O6 + 6O2 yields 6CO2 + 6H2O + energy (as ATP).

Explanation:

i said it first

Cellular respiration is the process in which the cells convert sugars into energy. The formula for cellular respiration is: C6H12O6+6O2>6CO2+6H2O

what are the 3 major purposes for the cell cycle

Answers

Cell division has three main functions which are reproduction of unicellular organisms and the production of gametes and growth in eukaryotes.

In the box provided explain why living organisms
contain more hydrogen atoms than any other
atoms, yet 65% of a typical organism's mass is
oxygen
І

Answers

Answer:

Explanation:

Living organisms are mostly made of water. Water is a molecule made from 2 hydrogen atoms and 1 oxygen atom, H2O. Now even though there are 2 hydrogen atoms for every oxygen atom in a living organism oxygen atoms are much heavier than hydrogen atoms. Hydrogen atoms are more than 15 times lighter than oxygen atoms and this is why they can be fewer atoms of oxygen in the body but they will still represent a lot of its weight.

Answer:

The living species comprise more number of hydrogen atoms in comparison to any other atoms, still 65 percent of the usual organism's mass is oxygen. The prime reason for this is that an atom of oxygen comprises sixteen times more mass in comparison to a hydrogen atom.

Explanation:

It is possible for organisms to reproduce both sexually and asexually?
Your answer:
True or false

Answers

Answer:

true

Explanation:

Answer:

The answer to that question is:

True

Which statement explains a difference between a cell wall and a cell membrane?

Answers

Cell membrane protects a wall, and cell wall doesn’t

Ten fish have lived in a 10-gallon fish tank for 6 months. However, within 2 weeks of adding 6 new fish, the population of fish drops to 7
fish. Which most likely accounts for this drop in the fish population?
A. The additional fish increased the water level.
B. The additional fish reduced the space per fish.
C. The additional fish increased the water temperature.
D. The additional fish reduced the carbon dioxide levels.

Answers

Answer:

I think it's D

Explanation:

Although space per fish is important, and may even be correct, I found D to be the most logical answer as each fish would need the same amount of carbon dioxide or the unbalance would cause a decrease in population.

Hope this helps

In your own words, define or describe what you
already know about photosynthesis?

Answers

Answer: Okay so Photosythesis is the process used in most plants (except carnivorus plants) when the plant uses its chroloplasts (cells only plants have) to convert sunlight into sugar which makes food for the plant so it can live without having to hunt for food.

Explanation:

I hope this helps sorry if it doesn't :(

Have a good day :)

Stay motivated :)

Answer:

Photosynthesis is the process used by plants, algae, and certain bacteria to convert the energy from sunlight (or other usable light sources) into chemical energy. Chemical energy is the energy these organisms use for different metabolic processes. During this process, they take in the carbon dioxide produced by all breathing organisms and release oxygen, which we breathe in once again, into the atmosphere.

Don came up with the hypotheses that butterflies prefer to eat nectar from white flowers Don conduct an experiment and learn that his hypotheses with not correct what should Don do next

Answers

Answer:

Explanation:

A. Don should change the data he collected to make it look like the hypothesis was correct.

B. Don should test a new hypothesis.

C. Don should communicate the results of his experiment.

D. Don should hide his results so that nobody can see that he was wrong.

The correct thing for Don to do would be to test another hypothesis.

Hypotheses are generalized statements without any experimental tests. Once they are tested and are found not to be true, the next thing is to discard them.

A hypothesis that has been proven not to be true no longer serves any purpose. The next thing would be for Don to make and test a new one.

The correct option is B.

Answer:

Don should communicate the results of his experiment.

Explanation:

PLZZZ HELP!!! I NEED HELP DESPERATELY!!
What is the gain of FADH₂ per pyruvic acid in the citric acid cycle?

Answers

Three NADH I believe and one FADH2 molecules if this is wrong let me know

Metals have properties that we use when we walk into safe buildings, use electricity, or cook food .
TRUE OR FALSE?

Answers

True if not I’m sorry (it should not be wrong

which of the following blood types is considered a "universal reciever" A B AB O

Answers

Answer:

Explanation:

Which organs are part of the excretory system?
A. gizzard, beak B. stomach, esophagus C. large intestine, small intestine D. kidney, bladder

Answers

Answer:

I would go with D

Explanation:

The kidney excretes bile and the bladder excretes urine.

I hope this helps in any way.

Answer: D. Kidney and bladder

Explanation: The kidneys filter your blood and form urine. Urine is then stored in the bladder and leaves/ is excreted from your body.

Nemo, a marine fish (adapted for life in the sea salt water ) is placed inside a freshwater aquarium. The next day, the owner finds that he has perished(died) in the tank! Why?

Answers

Answer:

The freshwater is hypotonic to the fish

Explanation:

A marine fish is adapted to living in water that is salty.

The fish will not survive because the freshwater would be hypotonic to the body of the fish and as such, excess water would enter its body which will lead to its death. The cells that make up the body of the fish will take-in excess water and lyse, leading to the death of the fish itself.

Which of these Earth spheres interacts with coral reefs to cause coral bleaching?

Atmosphere
Cryosphere
Geosphere
Hydrosphere

Answers

I think it’s atmosphere but don’t hold me to it I know for sure it’s no Hydrosphere

Answer: Atmosphere

Took the test

Where are new viruses assembled?

Answers

Answer:

The government lol, but seriously, the government are the ones who assemble the virus and us as regular citizens, we are the guinea pigs. It’s a sad world we are living in. Now as far as virus related to science, they are created in labs by scientists as an conducted experiment.

Most DNA viruses assemble within the nucleus but some viruses that are RNA developed solely within the cytoplasm.

Question 1 (2 points)
How did we define homeostasis?

Question 1 options:

Actively changing due to an environmental stimulus

Taking “raw” materials and turning it into a usable energy

The ability to increase in size and complexity

Regulation of bodily functions to stay within a certain range

Question 2 (2 points)
Saved
A hypothesis can be described as

Question 2 options:

a testable explanation.

a theory.

a law.

a wild guess.

Question 3 (2 points)
You notice you begin to sweat whenever the door to your bedroom is closed. This is most closely related to which step in the scientific method?

Question 3 options:

making an observation

forming a hypothesis

forming a conclusion

recording data

Question 4 (2 points)
In an experiment, the variable being tested or changed is the

Question 4 options:

control variable

dependent variable

responding variable

independent variable

Question 5 (1 point)
Match each of the following terms with the correct definition?

dependent variable

controls or constants

independent variable

hypothesis

1.
An testable explanation to explain a natural phenomenon

2.
the variables that are held constant in an experiment

3.
the variable that is measured as data in an experiment

4.
the variable that is controlled by the experimenter

Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study?

Question 6 options:

If the cage for the chickens is larger, they will produce more eggs.

If more eggs are produced by the chickens, they will lose more weight.

If there is more protein in the feed, then more eggs are produced.

If chickens receive more hours of light, then they will produce more eggs.

Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study
If the cage for the chickens is larger, they will produce more eggs.

If more eggs are produced by the chickens, they will lose more weight.

If there is more protein in the feed, then more eggs are produced.

If chickens receive more hours of light, then they will produce more eggs.

Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.

Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.

What is the independent variable in this experiment?

Answers

Answer:

question 1 is 4. question 2 is 2. question 3 is 1. question 4 is 2. question 5 is 1=3 2=2 3=4 4=1. question 6 is 2

what is the unit for mass

Answers

The answer is kilogram (kg)

which statement accurately describes bioaccumulation:
1) a substance, such as a pesticide, collects in the body of an organism over time.
2) the concentration of a substance increases as it moves up the food chain
3) a method to get rid of an invasive species in an ecosystem
4) pesticides in the soil, air and water become sources of pollution.

Answers

Answer: 1

Explanation:

I think its the first one because I learned this before and the first one seems reasonable

PLEASE ANSWER 15 POINTS

determine the CHARACTER of the bond that will form between phosphorus and bromine

Answers

bonds between two nonmetals are covalent

9. Iron (Fe) is an element found on the Periodic Table. Iron's atomic number is 26.
Which of the following properties would iron not be expected to have based on its
placement on the Periodic Table?
A Good electrical insulator
B Highly malleable and ductile
C Shiny, metallic luster
D Conducts heat well
HELP!

Answers

maybe D but at the same time it could be A

how do 2 siblings from the same parents look different to each other

Answers

Answer:

After all, kids get their genes from the same parents. But brothers and sisters don't look exactly alike because everyone (including parents) actually has two copies of most of their genes. And these copies can be different. Parents pass one of their two copies of each of their genes to their kids.

Explanation:

Please mark this as brainliest

Whitch part of the cells help keep all its pieces together

Answers

Answer:

Cytoplasm

Explanation:

which two products are bromelain likely to produce when breaking down proteins
amino acids
fatty acid
monosaccharides
nucleic acid
polypeptides
disaccharides

Answers

The two specific products that bromelain produces when breaking down proteins are polypeptides and amino acids.

What are proteins?

Proteins are a major group of biological macromolecules composed of a linear chain of aminoacids that are linked by means of peptide bonds.

Proteins are fundamental macromolecules present in all biological systems and they can be made by one or more polypeptides in order to form molecules that exhibit primary, secondary, tertiary, and quaternary structures.

These macromolecular structures can be evidenced by the tridimensional shapes that adopt different proteins, which can be globular or fibrous.

In conclusion, the two specific products that bromelain produces when breaking down proteins are polypeptides and amino acids.

Learn more about proteins here:

https://brainly.com/question/17089864

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Write the slope-intercept form of the equation for a line with slope 1/3 and y l-intercept at (0,-2/5 If g(x) = {(4, 5), (3, 2), (6, 1), (1, 0)}, which set of ordered pairs represents the inverse of g(x)?A.{(5, 4), (2, 3), (1, 6), (0, 1)}B.{(4, 5), (3, 2), (6, 1), (1, 0)}C.{(4, 5), (3, 2), (6, 1), (1, 0)}D.{(5, 4), (2, 3), (1, 6), (0, 1)}it d Wendy made her career planning timeline in 2010. In what year shouldWendy's timeline start?A. 2010B. 2013C. 2012D. 2011 A man has 14 of a kilogram of couscous.He shares at equally amongst 2 people. How many kilograms does each person get? Input your answer as a fraction of a kilogram. pls help? i dont understand this. 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