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Ostrovityanka [42]
3 years ago
5

Chemical digestion in the small intestine involves ________. a. a significant amount of enzyme secretion by the intestinal mucos

a b. cholecystokinin (CCK), an intestinal hormone responsible for gallbladder contraction c. secretions from the spleen that contain all enzymes necessary for complete digestion d. bile salts that help emulsify carbohydrates so that they can be easily digested by enzymatic action
Biology
1 answer:
balu736 [363]3 years ago
4 0

Answer:

b. cholecystokinin (CCK), an intestinal hormone responsible for gallbladder contraction

Explanation:

Chemical digestion is the process that involves the breakdown of chemical bond that holds food particles together into small parts to nourish the cells in the body. Thus, almost all chemical digestion takes place in the small intestine and enzymes used for the purpose of digestion are usually secreted by the pancreas which enters the small intestine through pancreatic duct. Furthermore, the entrance of digestive enzymes into the small intestine can only occur only when cholecystokinin hormone is secreted which is responsible for digestion of fats and protein.

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inessss [21]

Answer:

b.nuclear energy to heat energy to electrical energy

4 0
2 years ago
Which of the following is single-stranded, found throughout the cell, and has the bases A, C, U, and G?
g100num [7]

Answer:

RNA

Explanation:

DNA has the bases of A,T,C, and G.

RNA has the bases of A,U,C, and G.

the T base in DNA is 'Changed' into the base U

4 0
3 years ago
A population of wolves predates a population of moose on Isle Royale, Michigan, where there are fewer wolves than moose to start
andrew11 [14]

Complete question:

A population of wolves predates a population of moose on Isle Royale, Michigan, where there are fewer wolves than moose to start. The wolves prey on the moose and eat well, allowing them to have abundant offspring. However, as the wolf population rises, the moose population drops, and over time, the wolf population begins to drop also because of the reduced availability of resources. As the wolf population drops, moose are able to better survive and reproduce, causing the moose population to rise. With this abundance of moose, the wolf population is able to rebound until their population exceeds the moose population’s ability to support the number of wolves. Which population dynamic does this series of oscillations represent?

  1. Delayed density dependence
  2. Delayed density independence
  3. Extinction vortex
  4. Carrying capacity

Answer:

  1. Delayed density dependence

Explanation:

The Delayed density dependence occurs when two species are in interaction (prey-predator or parasite-host), and the dynamic of each population follows the dynamic of the other population. The natality and mortality rates of one species follow the rates of the other species.

<em>Delayed density dependence dynamics regulate populations and allow the occurrence of equilibrium or balance in nature.</em>

<u>Predator-prey scenarios</u>

Assuming that the prey lives in the ideal environment with no predators, it shows an exponential growth rate. Prey can grow, develop, and reproduce, increasing its population size. The more available items, the more predator there will be. The predator population increase in size, and its presence affects the prey populations, leading it to decrease. So there are fewer available items to prey on.    

The prey population also affects the predator population. After the increase in the predator population size, the number of available prey decreases. The predator lives in an ideal environment but depends on the prey density. The more predators there are, the fewer prey there will be left. The predator population decreases exponentially due to the item's lack. The predation rate depends on density as well as natality and mortality rates.

So, to sum up,

  1. prey population increases in size
  2. predator population increases in size
  3. prey population decreases in size
  4. predator population decreases in size

In this particular example, the wolves population follows the moose population and vice-versa. It is not simultaneous. It happens with a delay.

<em>Moose influences the wolf population because they are their source of food. The more moose, the more wolves there are. The fewer moose, the fewer wolves there are. </em>

This is a density-dependent dynamic because both populations are affected when they reach a high value.

6 0
3 years ago
Thanks to the development of transgenic plants, much of the food we eat has been altered so that it tastes better, looks better,
gregori [183]

Answer:

i believe the answer would be genetics since you are altering the DNA of the plants

7 0
2 years ago
A muscle's ability to perform contractions for a length of time is muscle
nata0808 [166]
Muscle spasms is the answer i belive because you dont have the control
3 0
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