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
aniked [119]
3 years ago
13

Plzz help me figure out how to do this

Biology
1 answer:
Vika [28.1K]3 years ago
5 0

Answer:

add them up and it will help

You might be interested in
Cite particularly the difference in the synthesis of the two biomolecules in animals and plants.
Sonja [21]

Answer:

The preceding section reviewed the major metabolic reactions by which the cell obtains and stores energy in the form of ATP. This metabolic energy is then used to accomplish various tasks, including the synthesis of macromolecules and other cell constituents. Thus, energy derived from the breakdown of organic molecules (catabolism) is used to drive the synthesis of other required components of the cell. Most catabolic pathways involve the oxidation of organic molecules coupled to the generation of both energy (ATP) and reducing power (NADH). In contrast, biosynthetic (anabolic) pathways generally involve the use of both ATP and reducing power (usually in the form of NADPH) for the production of new organic compounds. One major biosynthetic pathway, the synthesis of carbohydrates from CO2 and H2O during the dark reactions of photosynthesis, was discussed in the preceding section. Additional pathways leading to the biosynthesis of major cellular constituents (carbohydrates, lipids, proteins, and nucleic acids) are reviewed in the sections that follow.

Go to:

Carbohydrates

In addition to being obtained directly from food or generated by photosynthesis, glucose can be synthesized from other organic molecules. In animal cells, glucose synthesis (gluconeogenesis) usually starts with lactate (produced by anaerobic glycolysis), amino acids (derived from the breakdown of proteins), or glycerol (produced by the breakdown of lipids). Plants (but not animals) are also able to synthesize glucose from fatty acids—a process that is particularly important during the germination of seeds, when energy stored as fats must be converted to carbohydrates to support growth of the plant. In both animal and plant cells, simple sugars are polymerized and stored as polysaccharides.

Gluconeogenesis involves the conversion of pyruvate to glucose—essentially the reverse of glycolysis. However, as discussed earlier, the glycolytic conversion of glucose to pyruvate is an energy-yielding pathway, generating two molecules each of ATP and NADH. Although some reactions of glycolysis are readily reversible, others will proceed only in the direction of glucose breakdown, because they are associated with a large decrease in free energy. These energetically favorable reactions of glycolysis are bypassed during gluconeogenesis by other reactions (catalyzed by different enzymes) that are coupled to the expenditure of ATP and NADH in order to drive them in the direction of glucose synthesis. Overall, the generation of glucose from two molecules of pyruvate requires four molecules of ATP, two of GTP, and two of NADH. This process is considerably more costly than the simple reversal of glycolysis (which would require two molecules of ATP and two of NADH), illustrating the additional energy required to drive the pathway in the direction of biosynthesis.

4 0
2 years ago
Which of the following explains why arteries have thicker walls than veins?
Liula [17]

Answer:

c. because arteries carry high pressure blood from the heart

Explanation:

Arteries carry the oxygenated blood that is pumped directly from the left ventricle of the heart. Since they receive blood from the heart, the blood pressure is higher in arteries than veins. To withstand the higher pressure of blood pumped by heart, arteries have thicker walls than the walls of veins.

5 0
3 years ago
ONE FOOD CHAIN that was affected by the introduction of wolves and model it
MAVERICK [17]

Answer:

Carnivorous

Explanation:

The wolf, also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of Canis lupus have been recognized, and gray wolves, as colloquially understood, comprise non-domestic/feral subspecies. Wikipedia

4 0
2 years ago
What is the functional unit of the nervous system
Serga [27]
The neuron, or nerve cell, is the basic functional unit of the nervous system
5 0
3 years ago
Explain the role of enzymes in living cells
xz_007 [3.2K]
First, the basic function of an enzyme is to increase the rate of a reaction. Most cellular reactions occur about a million times faster than they would in the absence of an enzyme. Second, most enzymes act specifically with only one reactant (called a substrate) to produce products.
3 0
3 years ago
Other questions:
  • In some cows, the genes for white and red hair are both dominant. A roan cow has both white and red hair. This is an example of
    14·2 answers
  • Can someone please help me, I am a little stuck.
    9·2 answers
  • When organisms struggle to survive, they usually mutate to increase chances of reproduction true or false
    13·2 answers
  • How do wetlands form?
    15·2 answers
  • Which statement best describes the process of asexual reproduction?
    14·1 answer
  • play many roles in the body and determine many traits. In humans, is responsible for traits. Is the blueprint for proteins. The
    10·2 answers
  • Afferent arteriolar vasoconstriction __________ blood flow into the glomerulus, which causes the glomerular-capillary blood pres
    12·1 answer
  • Plss helppp!!
    6·1 answer
  • 6.The original source of all the energy in the ecosystem is the
    14·2 answers
  • What is pollution?????​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!