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mezya [45]
3 years ago
14

Select the correct statement about the heart valves. a. The tricuspid valve divides the left atrium from the left ventricle. b.

The mitral valve separates the right atrium from the right ventricle. c. The AV valves are supported by chordae tendineae so that they do not blow back up into the atria during ventricular contraction. d. Aortic and pulmonary valves control the flow of blood into the heart.
Biology
1 answer:
sleet_krkn [62]3 years ago
3 0
D) The AV valves are supported by chordae tendineae so that they do not blow back up into the atria during ventricular contraction.
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Which of the following is a good predictor of biodiversity in terrestrial ecosystems?
finlep [7]

The correct answer is - predator species in a community.

In the terrestrial ecosystems, a very good and usually sure predictor of the biodiversity is the existence of a predator species. The more predator species there are, the higher the biodiversity, and vice versa, the less predator species, the lesser the biodiversity.

The reason why the predators are such a good predictor of the biodiversity is that they are the species that are on the top of the food chain. That means that the predators are dependent for their survival on all the other species bellow them in the food chain, which is pretty much all species apart from themselves.

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4 0
4 years ago
This is the process where an organism produces more of its own kind
aliina [53]

Answer: Reproduction

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What are some characteristics of flowers that could attract the animals<br> that pollinate them?
DochEvi [55]

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Many flowers use visual cues to attract pollinators: showy petals and sepals, nectar guides, shape, size, and colour. I personally think it is very cool how they know what to do to attract pollinators.

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2 years ago
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Large organic molecules that are composed of many subunits are known as polymers<span>. Examples of polymers that occur in the human body are proteins, which have amino acids as subunits and polysaccharides (like starch) which have monosaccharides (such as glucose) as repeat units.</span>
6 0
3 years ago
Read 2 more answers
If the wild-type codon is ggu, how many single-base substitutions will result in an amino acid substitution? include any changes
SashulF [63]

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The codon GGU

Single base substitution that will change this codon that codes for glycine to another amino acid includes: a single base substitution in the GGU codon such as GGU- AGU can occur. thus, approximately six single base substitution can take place to change this codon to code for another amino acid. A single base substitution cannot change the codon to a stop codon unless it happens twice or there is more than a single base substitution.

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