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Alla [95]
3 years ago
12

How does this show that the circulatory and respiratory systems work closely together?

Biology
1 answer:
lara31 [8.8K]3 years ago
6 0
The respiratory and circulatory systems are close together by working and relying with each other. The respiratory system imports oxygen from the air  and that oxygen goes through out the body by the circulatory system pumping the oxygen. That creates carbon dioxide, which the respiratory exports from the body.
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Rough endoplasmic reticulum are
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Rough endoplasmic reticulum is the most essential in the role of producing proteins. Ribosomes are contained on top of them to help produce proteins.

Explanation:

These proteins are necessary for us to go on about daily functions

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2 years ago
The ability of an animal to maintain a stable internal environment is called?
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The ability of an animal to maintain a stable internal environment is called homeostasis.
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PLEASE HELP ME WILL MARK BRAINLIEST!!!!!!!What is the name of one of the lower chambers of the heart that receives blood from th
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PLS HELP A red flower is crossed with a white flower, producing offspring that are all pink. If two
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Answer: b : 25%

Explanation:

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2 years ago
A gene that affects hair length in dogs has two alleles. The allele for short hair (L) is dominant
Lelechka [254]

Answer:

This question lacks options, the options are:

A. Only recessive alleles are inherited from homozygous parents.

B. Dominant alleles grow weaker as they are passed from parents to offspring.

C. Only the parent with a dominant allele can pass that allele to offspring in sexual reproduction.

D. A heterozygous parent has an equal chance of passing either the dominant allele or the recessive allele to offspring.

The answer is D

Explanation:

This question involves a single gene coding for hair length in dogs. The allele for short hair (S) is dominant over the allele for long hair (s). This means that allele 'S' will always mask the phenotypic expression of allele 's' in a heterozygous state.

According to the question, two heterozygous dogs (Ss) were crossed to produce 6 shortt-haired offsprings and 2 long-haired offsprings. An heterozygous organism is that which contains two different alleles for a particular gene i.e. a combination of dominant and recessive alleles.

Based on this, during meiosis or gamete formation, an heterozygous dog (Ss) will produce gametes with the short hair allele (S) and long hair allele (s) in equal proportion i.e. 50-50. When the two gametes containing the recessive alleles (s) produced by each heterozygous parent fuses, an offspring with a recessive phenotype (long hair, ss) is produced.

Hence, a long-hair

phenotype can appear in the offspring of two short-haired dogs because a heterozygous parent has equal chance of passing either the dominant or recessive allele to the offspring.

6 0
3 years ago
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