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Aleks04 [339]
4 years ago
11

Which of the following best describes the process of diffusion?

Biology
2 answers:
gtnhenbr [62]4 years ago
8 0

Answer:

Option (4).

Explanation:

Diffusion is the important process by which solute particles move along the concentration gradient. The diffusion process is useful in exchange of ions and other particles in the cell.

The solute particles move from region of higher concentration of solute  to the region of lower concentration of solute. No input of energy is required in this process.

Thus, the correct answer is option (4).

sveta [45]4 years ago
6 0
"Diffusion is the movement of molecules from an area of higher concentration to one of lower" is the one among the following choices given in the question that <span>best describes the process of diffusion. The correct option among all the options that are given in the question is the fourth option or the last option.</span>
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The Energetics of Coupled Transport
andrezito [222]

Answer:

Explanation:

A. False - A symporter system requires that one of the molecules to be transported using passive transport.

B. True - The Na+ will move down the established concentration gradient releasing energy to facilitate movement of sucrose against its concentration gradient. This is known as secondary active transport.

C.  False -  sucrose moves through ion channels not by diffusion to better control its movement across the membrane.

D. True - Movement of molecules against their concentration gradient thus requiring energy input is known as active transport.

E. False - One of the molecules needs to be moving against its concentration gradient.

F. False - A Uniporter system allows the binding and transport of a single molecule at a time. A symporter allows simultaneous binding and transport of Na+ and sucrose molecules.

6 0
3 years ago
How does Twain indicates his intention to satirize Darwin’s idea about human nature?
Marizza181 [45]
According to Twain man could not have ascended from lower animals (Darwin theory of evolution) because man makes cruel and horrible decisions, rather man descends from Higher animals. He proved his conclusions about man by using specific scientific method, he subjected every postulate itself to the crucial test of actual experiment and have adopted it or rejected it according to the results.
4 0
3 years ago
Calculate the volume change for respiration in the dark. As you already saw from earlier questions, oxygen production is fairly
Tatiana [17]

Answer:

-1.9mL/min

Explanation:

The rate of O₂ production can be calculated by the formula

= ( Final volume - initial volume)/time(min).

From the graph provided and attached below, the rate of O₂ production or rate of photosynthesis at light intensity of 8 is about 3.75 mL/min.  

The rate of O₂ production is taken as the rate of photosynthesis. It is expected to progressively increase from light intensity 0 as light intensity increases. However, at very high light intensity, the rate slows down as water becomes limiting and the stomata closes in order to conserve water.

Question in order

Experiment 2: Respiration in the Dark

Calculate the volume change for respiration in the dark. As you already saw from earlier questions,

oxygen production is fairly constant. You will not need to calculate the individual volume changes.

Just subtract the original volume at 00:00:00 from the final reading at 00:02:00. Record your answer

for use in a later question.

<em>Note: depending on when you started the timer there is a range of possible answers. Pick the answer that is closest to this</em>

What was the volume change for respiration in the dark?

Correct answer:

-1.9 mL/min

7 0
3 years ago
??????????????????!????
makvit [3.9K]

Dominant: the more common trait (brown hair)

Recessive: a trait that doesn't show up unless both parents carry it (blue eyes)

Co- dominant: both traits show up and co- exist (AB blood)

Incomplete dominance: when a dominant gene does not completely mask a recessive gene so they blend (pink flower)

Phenotype: physical trait- able to be seen (stripes on a zebra)

Genotype: genetic makeup of an organism - genetic trait

Hetrozygous: different (Bb)

Homzygous dominant: same and dominant (bb) and (BB)

Purebred: same as homzygous- has same alleles (bb) and (BB)

Hybrid: also known as heterozygous traits

1.

75%

25%

orange (AA) blue (aa)

2 orange Aa

2.

0%

100%

Hetrozygous

7 0
3 years ago
Developmental psychologists study physical, cognitive, and ________ change throughout the human life span.
stiks02 [169]

Answer:

Social.

Explanation:

Psychology is the field of science that mainly deals with the study of the mental, social and human behavior of an individual. Different fields of psychology are development psychology, social psychology and cultural psychology.

Developmental psychology mainly deals with the study of the mental, social and physical changes of the organisms through its lifespan. The development psychology includes the interaction between the environmental experience of the individual and the genetic factors.

Thus, the answer is social.

3 0
3 years ago
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