BIOLOGY HIGH SCHOOL

The heart valves act like doors.


TrueFalse

Answers

Answer 1
Answer: its true as you breath your heart and lungs go in and out as if you were swinging a door open and shut letting oxgen in and out hope i could help :)

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Name classification of matter used in 1800

Answers

In the 1800s the matter was divided into two categories which are:

1) Organic matter

2) Inorganic matter

The difference between them was that organic referred to living matter which have life in them as opposed to inorganic matters which are lifeless or are of geological nature such as rocks, mountains, minerals etc.

The pointer is indicating a diploid cell that develops into the _____.

Answers

Answer:

Embryo

Explanation:

An embryo refers to the early stage of development of a multi-cellular organism and it occurs just immediately after fertilization. This development often continues through the formation of cell, tissues, organs.

An embryo is formed from the fertilization of a female ova by a male sperm.

Answer:

The correct answer is Embryo.

Explanation:

This question is incomplete due to missing of the picture however the picture is attached with the answer.

Seed embryo formation occurs when there is fertilization of pollen and ovule which are haploid and transform into diploid (2n) structure.

The pointer in the picture is showing the diploid (2n) cell which develops into the embryo of the plant.

Which of the following statements about the first scuba diving suit is true?a.
It weighed about 100 pounds.
b.
It was made in the 1950s.
c.
It weighed about 50 pounds.
d.
It was made in the 1870s.

Answers

Scuba diving suit weighs about 50 pounds, that's why the correct answer is letter c. Scuba diving suit is usually wore when someone wanted to dive underwater. Scuba diving suit protects the diver underwater since it is fitted and covers the divers skin, it also has a breathing supplies to help the diver breath under water.

Answer:

D. It was made in the 1870s.

Explanation:

I just took the quiz on ed and got it right.

Which of the following is caused by the modification of density-independent factors?

Answers

The one that is caused by the modification of density-independent factors is : parasitic wasp invade cocoons, killing caterpillars
Density independent factors refer to occurrences that limit the number of a specific population

hope this helps

What would happen if a mutation created a new allele that decreased fitness?

Answers

Fitness describes a reproductive success of an individual. For example, there are green and yellow beetles in a population. If a color affects the reproductive success, for example, green beetles will have more offspring that the brown ones because of their color. So, green beetles have higher fitness. And the beetles with decreased fitness will have less offspring.

So, if a mutation creates a new allele which decreases the fitness, the altered allele will not be inherited in such a ratio as the unaltered allele will.

ASAP HELP ME PLSSS HERE ARE THE ANSWER KEYS LISTEN EM IN ORDER WITH THE QUESTIONS answer keys :
reproductive
immune
skeletal
lymphatic
digestive
muscular
nervous
Endocrine
excretory
respiratory
circulatory
integumentary

Answers

Answer:

1. Circulatory

2. Digestive

3. Lymphatic

4. Muscular

5. Integumentary

6. Skeletal

7. Respiratory

8. Immune

9. Reproductive

10. Excretory
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