BIOLOGY HIGH SCHOOL

What factors contribute to the effect an environmental toxin has on the human body?

Answers

Answer 1
Answer:

Answer:

There are several factors that can contribute to the effect an environmental toxin has on the human body. They are:

- Form and innate chemical activity

- Dosage, especially dose-time relationship

- Exposure route

- Species

- Life stage, such as infant, young adult, or elderly adult

- Gender

- Ability to be absorbed

- Metabolism

- Distribution within the body

- Excretion

- Health of the individual, including organ function and pregnancy, which involves physiological changes that could influence toxicity

- Nutritional status

- Presence of other chemicals

- Circadian rhythms (the time of day a drug or other substance is administered)

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Which members of an ecosystem are part of the energy flow? A. ONLY the living things in the ecosystem B. ONLY the nonliving things in the ecosystem C. Living and nonliving things in the ecosystem D. The energy flow is not dependent on any members of the ecosystem
If one amino acid in a sequence of several hundred is changed, a mutation can result. a. True b. False
According to the biological species concept, for speciation to occur, _____. according to the biological species concept, for speciation to occur, _____. the number of chromosomes in the gene pool must change large numbers of genes that affect numerous phenotypic traits must change at least one gene, affecting at least one phenotypic trait, must change changes to centromere location or chromosome size must occur within the gene pool
Oi! Bakugo here. I need some help again.Which would least likely result from a chromosomal change?death of the cell or organism no effect on the cell or organismdecrease in reproductive function of the organismchange to the phenotype of the organism
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George is running a 5-km race and his cells need more oxygen. Which change will help his body meet the increased demand for oxygen? A. His heart beating more quickly. B. His pancreas releasing more insulin. C. His breathing becoming more shallow. D. His sweat glands becoming more active.

Answers

Answer: A. His heart beating more quickly.

Explanation:

The physical activity like running increase the rate of heart beat and blood circulation in the body due to muscular activity. During running the body experiences the depletion of oxygen. Oxygen becomes the main requirement for cellular respiration during running. To meet the requirement of oxygen the heart pumps the blood faster so that the requirement in each cell get fulfilled through rapid blood circulation.

On the basis of the above explanation, A. His heart beating more quickly. is the correct option.

A. because the heart will pump more blood filled with oxygen to the muscles that need it most

Which kind of tumor grows slowly

Answers

That answer is Benign

During the germinal period of prenatal development, some cells become part of the brain, some become part of the leg, and some become part of the stomach, etc. the term for this process is: select one:a. duplication.
b. division.
c. differentiation.
d. specialization.

Answers

The correct answer is c.

Differentiation in prenatal development is the process of growthand development in which embryonic cells become specialized and differenttissue structures rise. Differentiation of the cells during this stage is crucialto the cell, tissue, organ, identity of the organism.

The study of animals' structures, behaviors, functions, and evolution is called _____. ethology zoology biology physiology

Answers

Answer:

The correct answer is option B, Zoology

Explanation:

Let’s look at the definition of each term one by one –

a) Ethology – Ethology deals with the study of animal behaviour and the evolutionary factor that led to the development of such behaviour in any organism.  

b) Zoology – It is the study of animals and their nature, physiology, genetic history, evolutionary pattern and behaviour.  

c) Biology – It deals with the study of all sorts of living organisms.  

d) Physiology – It deals with the physical functioning of the organism and their parts.  

It is the zoology that includes study of every thing about animals i.e anatomy, behavior, physiology, evolutionary pattern etc. Thus option B is correct.

the answer is zoology because zoology is the study of animals and thier behaviors, envrionments, and etc.

How many and what type of chromosomes would be expected in a karyotype of a human male? (1 point) 22 pairs of autosomal chromosomes and 2 Y chromosomes 23 pairs of autosomal chromosomes and 2 Y chromosomes 22 pairs of autosomal chromosomes, 1 X chromosome, and 1 Y chromosome 23 pairs of autosomal chromosomes, 1 X chromosome, and 1 Y chromosome

Answers

Remember there are 46 chromosomes in a (normal) human nucleus, which consists of 23 pairs of chromosomes.

Of these, one pair are the sex chromosomes.

In females, the sex chromosomes are XX

In males, the sex chromosomes are XY

So the karyotype of a human male would consist of 22 pairs of autosomal chromosomes, an X chromosome, and a Y chromosome.

The correct answer is

C. 22 pairs of autosomal chromosomes, 1 X chromosomes, and 1 Y chromosomes

I hope this helps.

What must happen for a solar eclipse to occur? A) The moon must be full.
B) The moon must pass behind Earth.
C) The moon’s orbit must cross the plane of the ecliptic.
D) The moon’s orbit must not cross Earth’s penumbra.

Answers

c) the moons orbit must cross the plane of the ecliptic.
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