The rate at which molecules, such as water and oxygen, enter a cell is determined by the–

Answers

Answer 1

Answer:

Explanation:

Cell membranes act as barriers to most, but not all, molecules. Development of a cell membrane that could allow some materials to pass while constraining the movement of other molecules was a major step in the evolution of the cell. Cell membranes are differentially (or semi-) permeable barriers separating the inner cellular environment from the outer cellular (or external) environment.

Water potential is the tendency of water to move from an area of higher concentration to one of lower concentration. Energy exists in two forms: potential and kinetic. Water molecules move according to differences in potential energy between where they are and where they are going. Gravity and pressure are two enabling forces for this movement. These forces also operate in the hydrologic (water) cycle. Remember in the hydrologic cycle that water runs downhill (likewise it falls from the sky, to get into the sky it must be acted on by the sun and evaporated, thus needing energy input to power the cycle).


Related Questions

8. Which of the following is a polysaccharide?
sucrose
cellulose
fructose
glucose

Answers

Answer:

Cellulose i think?

Explanation:

Answer: Glucose

Explanation: Glycogen is a large, branched polysaccharide that is the main storage form of glucose in animals and humans. Glycogen is as an important energy reservoir; when energy is required by the body, glycogen in broken down to glucose, which then enters the glycolytic or pentose phosphate pathway or is released into the bloodstream. Glycogen is also an important form of glucose storage in fungi and bacteria.

Please help It is making me cry

Answers

Answer:

What are you supossed to be doing

Explanation:

Answer:

Can you give me the answers?

Explanation:

What is the chloroplast?

Answers

where photosynthesis takes place

Five students get sick with a cold after a weekend field trip to the aquarium with their classmates. Which best explains why these students became sick?

A contact with an infected fish

B. contact with an infected person

C. contact with contaminated food

D contact with a contaminated water​

Answers

Answer:

The answers is B

Explanation:

I just took a test that had this question on it.

B. contact with an infected person

Transmission occurs when an infected person interacts or exchanges bodily fluids with another person.  This can happen before the infected individual even realizes they are sick.

After a weekend field trip to the aquarium with their classmates, five pupils catch a cold. Because they may have come into contact with an infectious person, students became ill. Students became sick as a result of B. contact with an infected person

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Which researcher theorized that hypnosis comes about as a form of roleplay between hypnotist and subject?
A. Ernest Hilgard
B. Theodore Sarbin
C. Theodore Barber
D. Milton Erickson
Please select the best answer from the choices provided
А
B
Ο Ο Ο Ο
С
D
Save and Exit
Next
Submit
Mark this and return

Answers

Answer:

D. Milton Erickson

Explanation:

Just took the test! Please mark me the Brainliest! peace and love

Milton Erickson is the researcher who theorized the hypnosis that comes out form the roleplay of the hypnotist and subject.

He has dedicated his life to the field of hypnotism and is committed to scientific methodology.

He was one to specialize in hypnosis and family therapy.He is noted for his approaches in the uncoinsuous mind.Hence the option D is correct.

Learn more about the that hypnosis comes about as a form.

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3. Autotrophs that convert light energy into chemical energy is called
a. photoautotrophs
b. heterotrophs
c. chemoautotrophs
d. omnivores

Answers

Answer:

A) Photoautotrophs

Explanation:

Tbh Im not entirely sure but photo means light and it seems like the most likely answer

In mice, a certain species displays incomplete dominance in coat coloring. The offspring of a
black (BB) mouse and a white (bb) mouse are gray (Bb) mice. A cross between two gray
mice will most likely produce offspring with which percent of coat colors?
A. 25% black, 75% gray
B. 25% gray. 75% white
C. 25% white, 25% black, 50% gray
D. 25% gray. 25% black, 50% white

Answers

Answer will be C. 25% white, 25% black, and 50% grey.

Explanation:
Draw a pedigree! :)

En un cruce entre peces naranjas y peces grises se obtiene una generación (f1) de 50% peces grises . Realice el cruce y explique lo ocurrido dato: el color naranja es dominante sobre el color gris

Answers

Answer:

Uno de los progenitores es heterocigoto para color naranja (Nn) y el otro parental es homocigoto recesivo para gris (nn). Al haber una cruza entre un homocigoto recesivo y un heterocigoto, la 50% de la progenie expresa color naranja (Nn), mientras que el otro 50% expresa color gris (nn).

Explanation:

Datos disponibles:

Cruce entre peces naranjas y peces grises50% de la F1 son peces grisesNaranja dominante sobre gris

Podemos nombrar el alelo dominante para color naranja N, y al alelo recesivo  para color gris n.

Para que en un cruce entre dos fenotipos distintos, el 50% de la primer camada exprese uno de estos fenotipos, entonces uno de los parentales debe ser heterocigoto, mientras que el otro parental debe ser homocigoto recesivo. De esta forma 50% de la primera generación expresara uno de los fenotipos, mientras que el otro 50% expresará el otro fenotipo.

Supongamos que uno de los parentales lleva el genotipo Nn, y el otro parental es nn.

Cruce:

Parental)      Nn    x     nn

Gametas)   N    n       n    n

Fenotipos) Naranja     Gris

Cuadro de Punnett)      N           n

                            n       Nn         nn

                            n       Nn         nn

F1)  2/4 = 1/2 = 50% de la progenie tendrá genotipo heterocigoto, Nn

     2/4 = 1/2 = 50% de la progenie tendrá genotipo homocigota recesivo,    

     nn

     50% de la progenie será color naranja (Nn)

     50% de la progenie será color gris (nn)

               

Scientists are studying the bacteria living in termites because they want to
genetically engineer......

Bacteria that can resist pests on crops.

Bacteria that can create ethanol from left over plant material.

Bacteria that create a vaccine.

Bacteria that create antibiotics.

Answers

Answer:

B. this is why Those bacteria may contain genes that will help convert plant material to ethanol. so B. and if it's wrong then sorry but if it's right u welcome ;)

Bacteria that can resist pests on crops.

The following information should be considered:

In the case when the scientist should studying the bacteria that lived the termites so it should resisted the pest on the crops. These kind of bacterias should comprise of genes that would helps transform plant material to ethanol.

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Why are some genetic traits very common in certain parts of the world (ex:
brown eyes in California, blue
eyes
in Britain, etc.)?

Answers

Answer:

you are going to have less diversity in specific areas. they will typically have kids with someone they met where they live, and a person will live where they were born. same how mexican people have the same skin color in Mexico.

what animals eat leafy sea dragons? also want to do leafy sea dragons eat?

Answers

Answer:

(1) In the wild, young sea dragons are preyed upon by other fish, crustaceans and even sea anemones.

(2) Leafy seadragons eat small, plankton crustaceans.

PLS HELP ME IM STRESSING RIGHT NOW I JUST NEED HELP ON THIS

Which statement accurately describes a mountain ecosystem?
They usually host three or more ecosystems where animals can’t live.
They usually host one ecosystem with a variety of wildlife.
They usually host one ecosystem with a variety of plants.
They host three or more distinct ecosystems.

Answers

Mountain life has many life and plants, so it’s not A, it could be b or c but D makes most sense I don’t know what 3 or more distinct ecosystems mean though

Cell specialization is important during the growth and development of a multicellular organism. This process is most directly regulated by _____________.

Answers

Answer:

atp

Explanation:

Important vocabulary continued: label and illustrate an autotroph and a heterotroph organism. Underline the one that produces its own food. If you can answer 3 also that would be nice

Answers

2. autotrophs make their own food/nutritional organic substances, an example would be plants because they undergo photosynthesis! heterotrophs have to seek out their food, they can’t produce it themselves. so this would be a lion, a human, a dog, etc.

3. unicellular has one cell, and multicellular has more than one.

List the cell organelles involved in energy generation for the cell.

Answers

Answer:

Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.

Can you list some facts about Food webs.

Answers

Answer:

A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.

Explanation: A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.

A food web is where is constants all food chains that are in a single echosystem

HELP ME PLEASE I HAVE TO TURN IT IN NOWW !!! Pleaseee

Answers

Answer:

I think, (Not 100% sure, but i think its H

Explanation:

All of the images below were taken using a microscope. Which of these photos shows cells?
Image by Umberto Salvagnin
COMPLETE

Answers

Answer:

It is all of them

Explanation:

just did it on edge!

Answer:

A,B,C

Explanation:

I got it right.

Crossing over occurs during meiosis and leads to changes in the chromosomes. What type of chromosomes does crossing over produce?
1. Chromosomes containing DNA from two different parental chromosomes
2. Chromosomes identical in genetic makeup to the parental chromosomes
3. Chromosomes containing more genes with non recombinant chromosomes
4. Chromosomes carrying genes from one parent

Answers

Answer:

1.

Explanation:

because the DNA is being mixed up while crossing over

Crossing over occurs during meiosis and leads to chromosomes containing DNA from two different parental chromosomes, hence option 1 is correct.

What is meiosis?

New allelic combinations are created in the daughter cells as a result of the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis.

Homologous chromosomes couple along their lengths during meiosis, one from each parent. At locations known as chiasma, the chromosomes overlap.

The chromosomes split and reunite at each chiasma, exchanging part of their genes in the process. Genetic diversity comes from this recombination.

Therefore, the genetic complement in each daughter cell at the end of meiosis is best described as a haploid set of chromosomes resulting from chromosomal recombination between the parents.

Learn more about meiosis, here:

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I need help on question ​

Answers

Answer:

what question??

Explanation:

According to the base-pairing rules for DNA, which of the following statements
NOT true?
A always pairs with T
C always pairs with G
T always pairs with G
T always pairs with A

Answers

Answer:

T always pairs with A

Explanation:

I think so I'm super sorry if its wrong :)

According to the base pairing rule, guanine always forms a bond with cytosine, while adenine always pairs with thymine, T is not paired with G, hence option C is correct.

What is base-pairing in DNA?

Because it is RNA, there is no complementary base pairing between the bases adenine and thymine in DNA. Uracil, which has a structure remarkably similar to that of thymine, is present in place of thymine.

Base pairing rule, guanine always forms a bond with cytosine, while adenine always pairs with thymine structure of DNA is created by the binding of these base pairs

Although they keep the two strands of DNA together, they are not strong enough to withstand replication.

Therefore, the base pairing rule, guanine always forms a bond with cytosine, while adenine always pairs with thymine, hence option C is correct.

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( PLEASE HELP NEED A REAL ANSWER! )
Individuals with advantageous traits for their environment have a better chance of surviving
than those with less helpful traits. Explain how this is demonstrated in the moth information
above. Use specific information and examples.

Answers

Answer:

The moths with darker coloring lived long enough to reproduce and passed the trait on. The light peppered moths were easier for predators to spot on the dark soot covered trees so they died first.

Explanation:

HELPPPP pls I need answer fast like flash

Answers

Answer:

and im here hi

Explanation:

was i fast enough?

As DNA is unzipping this enzyme comes in and begins synthesizing mRNA

A. RNA primase
B. RNA polymerase
C. DNA primase
D. DNA polymerase

Answers

Correct answer - B, RBA polymerase.

Why? - RNA polymerase, an enzyme in the cell, is responsible for creating mRNA from the correct gene. RNA polymerase is similar to DNA polymerase, but it makes an RNA strand rather than a DNA strand. RNA polymerase attaches to the promoter region of a DNA helix.

what are infectious agents?

A. agent that investigates different types of infection
B. attackers that can cause a response by the immune system
C. attackers that cannot cause a response by the immune system
D. infectious agents are always good for the human immune system.

Answers

The right answer is A I took the test

What do you call a process in which cells and organisms produce other cells and organisms of the same kind

A. reproduction
B. oxidation
C. respiration
D. perspiration​

Answers

Answer:

A. reproduction

Explanation:

X- it's not oxidation because oxidation is just a reaction in which atoms of an element lose electrons

X- it's not respiration because it's literally just taking a breath; breathing

X- it's not perspiration because perspiration is just sweating

✔- reproduction is making copies of the same kind.

¹ex.

fish + fish = another fish with both genetics from mom and dad, looking like a copy of them

ILL GIVE BRAINLY PLS IM BEING TIMED
How are mountains formed?
by plateaus caving in
by land masses being eroded
by Earth’s crust being uplifted
by rain carving out an area of land

Answers

Answer:

Earth’s crust is pushed up in big folds or forced up or down in blocks. So your answer is "By earth's crust being uplifted." Please mark as brainliest, hope this helps!

Condensation: the ______ off of ______ in the air in the ______

Answers

Airplane,helicopter,titanic That’s the correct answer

which principle did you apply in step 2 in the Investigation

Answers

Answer:

Do not pre-judge

Investigation must be trained and experience will be applied in  step 2 in the Investigation.

What are the steps of  investigation ?

Scientific investigation is a continuous process of investigation which involve different steps to get the answer of a question by using scientific method.

The basic steps includes Investigators must be as independent, must be trained and experienced, all relevant issues must be identified, sufficiently resourced.

All relevant physical and digital evidence must be identified, collected , stored and examined during experiment, documentation must be secured and reviewed, witnesses must be identified.

The analysis of all the results must be gathered during the investigation must be objective oriented and based solely on the facts.

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What kind of organisms are rotifers?
multicellular
vertebrates
photosynthetic
unicellular

Answers

Answer:

Multicellular

Explanation:

they live in fresh water ponds and feeds off of some single cellular bacteria and organism.

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