1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoray [572]
2 years ago
8

What is the ratio of surface area to volume for a sphere with the following

Biology
2 answers:
Juli2301 [7.4K]2 years ago
7 0
It’s D 0.5!!!!!!!!!!!!!!!
Masja [62]2 years ago
5 0

Answer:

Answer in d 0.5

You might be interested in
What is the source of all energy in the pyramid in model 1?
Wittaler [7]
The source of all energy in the pyramid in model one is the hawk
8 0
2 years ago
Human activities have altered many natural environments ________. Many lands are now fields where only one farm crop is grown, a
marysya [2.9K]

Human activities have altered various natural environments around the planet. Various lands are now fields where only one farm crop is cultivated, is an example of monoculture farming.  

An agricultural method of growing or producing a single plant, crop, or a livestock species, breed, or a variety in a field of the farming system at a time is known as a monoculture. Hence, the correct answer is option D, that is, monoculture.  


7 0
2 years ago
Contrast the electron transport chain in photosynthesis with the one in cellular respiration by identifying sources of the high-
nlexa [21]

Respiration:

The respiratory chain detailed here is that of mammalian mitochondria:

NADH → NADH dehydrogenase → ubiquinone (coenzyme Q10) → coenzyme Q-cytochrome c reductase → cytochrome c → cytochrome c oxidase → O2;

succinate → succinate dehydrogenase → ubiquinone (coenzyme Q10) → coenzyme Q-cytochrome c reductase → cytochrome c → cytochrome c oxidase → O2.

It consists of the following elements:

The high transfer potential electrons of NADH are transmitted to coenzyme Q10 (ubiquinone) by NADH dehydrogenase, or complex I. Reduced coenzyme Q10 is ubiquinol Q10H2.

The electrons with a high succinate transfer potential are transferred to coenzyme Q10 by succinate dehydrogenase, or coenzyme II, also giving ubiquinol Q10H2.

Ubiquinol Q10H2 transfers its electrons to two cytochromes c under the action of coenzyme Q-cytochrome c reductase, or complex III.

Four cytochromes c each transfer their electron to an oxygen molecule under the action of cytochrome c oxidase, or complex IV. Two molecules of water are formed.

Each of these four respiratory complexes has an extremely complex structure partially included in the internal mitochondrial membrane. Apart from the complex II, they are proton pumps. The electrons circulate between these structures on liposoluble or hydrophilic electron transporters depending on the case.

Photosynthesis:

Photophosphorylation is the equivalent, for photosynthesis, of oxidative phosphorylation for cellular respiration. It constitutes the "light phase" of photosynthesis, that is, it groups together light-dependent reactions.

In plants, photophosphorylation occurs in the membrane of thylakoids, within chloroplasts:

H2O → photosystem II (P680) → plastoquinone → cytochrome b6f complex → plastocyanine → photosystem I (P700) → ferredoxin → ferredoxin-NADP + reductase → NADP +;

cyclic photophosphorylation: (ferredoxin →) plastoquinone → cytochrome b6f complex → plastocyanine → photosystem I (P700) → ferredoxin (→ plastoquinone).

Contrast:

<u>What he has in common is:</u>

*The sequence of several complex membrane proteins transporting electrons.

*The conversion of DNA into ATP.

<u>The differences</u> are in the transport proteins themselves, as well as the direction of H + flux (to the cytoplasm for photosynthesis, and to the mitochondrial matrix in respiration).

8 0
3 years ago
How does the cell regulate the substrate specificity of ribonucleotide reductase to maintain equal amounts of all four deoxynucl
Kruka [31]

Answer:

The correct answer is A When dTTP is bound to the specificity site, more dCDP is produced

Explanation:

Ribonucleotide reductase catalyzes the conversion of ribonucleotide to deoxyribonucleotide.

                  When dTTP is bound to the specificity site at that time dCDP is produced.The So formed dCDP is converted to dUDP by the help of dCDP deaminase.The dUDP is then converted to dUTP by phosphorylation.

               Finally the dUTP is converted to dTTP by the catalytic activity of thymidylate synthase with the presence of N5 N10 methylene tetrahydrofolate.

        Thus equal amount of deoxyribonucleoside triphosphates  are maitained by the cell.

8 0
3 years ago
. Which statement best describes what Earth’s outer layer is like underneath the surface in the image? a Underneath both the soi
Inessa05 [86]

Answer:

I believe the answer is B.

Explanation:

5 0
2 years ago
Other questions:
  • One of the characteristics of retrotransposons is that
    14·1 answer
  • Plant cell do not have contractile vacuoles. What happens when a plant is watered?
    5·1 answer
  • In the blood, about 99% of the oxygen is:
    7·1 answer
  • Which statement is an example of cell division at work?
    5·2 answers
  • Beatrice and Allen Gardner taught the chimpanzee Washoe to communicate by means of:A) pictures.B) Morse code.C) sign language.D)
    14·1 answer
  • Can fossil tell us which animals lived at a certian time?
    9·2 answers
  • Which of the following consists of group of species living together without considering abiotic factors
    13·1 answer
  • Practice 5: What major feature in DNA makes the organisms look and act differently? Choose the
    9·1 answer
  • Someone help pleaseee
    13·1 answer
  • . You may be taking a trip this summer. Imagine that you are on the airplane, about to fly to an exotic location. How do acceler
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!