What physicians use antagonistc substances to attach to disease organinsm or illness?

Explain how population sizes in nature are regulated

goblinko [34]

Answer:

Understanding Populations

Section 1 How Populations Change in Size

Objectives

Describe the three main properties of a population.

Describe exponential population growth.

Describe how the reproductive behavior of individuals can affect the growth rate of their population.

Explain how population sizes in nature are regulated.

What Is a Population?

A population is a group of organisms of the same species that live in a specific geographical area and interbreed. A population is a reproductive group because organisms usually breed with members of their own population.

Properties of Populations

Density is the number of individuals of the same species that live in a given unit of area. Dispersion is the pattern of distribution of organisms in a population. A population’s dispersion may be even, clumped, or random. Size, density, dispersion, and other properties can be used to describe populations and to predict changes within them.

How Does a Population Grow?

A population gains individuals with each new offspring or birth and loses them with each death. The resulting population change over time can be represented by the equation below.

Growth rate is an expression of the increase in the size of an organism or population over a given period of time. It is the birth rate minus the death rate. Overtime, the growth rates of populations change because birth rates and death rates increase or decrease. For this reason, growth rates can be positive, negative, or zero.

For the growth rate to be zero, the average number of births must equal the average number of deaths. If the adults in a population are not replaced by new births, the growth rate will be negative and the population will shrink.Explanation:

8 0

3 years ago

This plant structure gives plants their green color

Sav [38]

The part of the plant cell that gives it the green color is an organelle called the chloroplast. Inside the chloroplast there are pigment molecules called chlorophyll, which is the substance that gives the plant the green color.

4 0

4 years ago

Tom was in a coma after an automobile accident which killed his wife. His physical health improved and there is no medical reaso

hjlf

Answer:

If the inability of Tom to move his arms and legs has no apparent physical reason, it is likely that Tom may be suffering from conversion disorder.

Explanation:

Conversion disorders have a psychological basis, and they are dissociative disorders where there is a functional disturbance for no apparent reason. The term conversion means that a psychological problem can become a physical manifestation.

Tom is not able to move his arms and legs, but there is no medical reason why. Because of the trauma of losing his wife in an accident, it is possible that the cause of his paralysis is psychological, due to a conversion disorder secondary to a depressive disorder.

Learn more:

Difference between illness anxiety disorder and conversion disorder brainly.com/question/4413977

8 0

3 years ago

Is a process in which a water body acquires high levels of nutrients

erik [133]

Eutrophication, the process by which a body of water acquires a high concentration of nutrients, has become known to the environmentally aware community as a key human stressor on the world's ecosystems. High concentrations of nutrients, specifically phosphates and nitrates, promote excess growth of primary producers.

3 0

3 years ago

The toxic cyanide anion (CN-) binds to cytochrome c oxidase and prevents electron transfer. Dosing of BP-CML cells with cyanide

astra-53 [7]

Answer: C. Ii & III are correct

II. reduced intracellular ATP.

III. apoptosis or necrosis.

Explanation:

Cytochrome c oxidase controls the last step of food oxidation. Cytochrome c oxidase is an enzyme responsible for electron transfer in the electron transport chain (ETC), it inhibit in slowing down or stopping the ETC.

Consequently, ATP production would be gradually reduced, as the ETC is responsible for the majority of ATP production. This shows option II is correct.

The question starts by stating that cyanide is highly toxic, so this match up with the fact that a large dose would also cause cell death (apoptosis or necrosis). Therefore, option III is also accurate.

Option I: Inhibiting the ETC is consequential as it reduces oxygen demand because electrons would not flow to oxygen, the final electron acceptor.

3 0

3 years ago