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Alex777 [14]
3 years ago
6

A) a piece of wood B) sunglass lenses C) a piece of paper D) a clear glass vase Which of these is an opaque object?

Biology
1 answer:
julsineya [31]3 years ago
7 0

An opaque object is any object that is not transparent (allowing all light to pass through it), or translucent (allowing some light to pass through it.) Knowing this we can auto-matically dismiss option D),B), and C) because these all let some form of light through them  so our answer would then be A) because light does not pass through wood like it would the others.

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Which of the following statements about cardiac muscle is true? a. Cardiac muscle is like smooth muscle, because smooth muscle h
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Answer:

c. Cardiac muscle contains bands like skeletal muscle, but its contractions are involuntary like smooth muscle.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Cardiac muscle is also referred to as myocardium and it's one of the three (3) muscles found only in the heart of vertebrates, the other two (2) being smooth muscle tissue and skeletal muscle tissue.

Cardiac muscle contains bands like skeletal muscle referred to as sarcomeres (contractile units), but its contractions are involuntary like smooth muscle and it's typically being regulated by the sinoatrial node of the heart.

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2 years ago
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Answer:

The cognitive abilities of an individual to learn from experience, to reason well, and to cope effectively with the demands of daily living

Explanation:

Intelligence is something that can actually be measured, even though it is not a physical, but a psychological trait. The humans had wanted to be able to measure their intelligence for quite some time, but that only became possible with the development of the modern psychology and the test specially created for this purpose. The intelligence represents the cognitive abilities of an individual to learn from experiences, how well can it reason, as well as to cope effectively with the demands of the daily living. To put it more simple, it is the ability of an individual to acquire and apply skills and knowledge in its life.

7 0
3 years ago
Which three statements correctly describe the endoplasmic reticulum?
Sunny_sXe [5.5K]

I have searched everywhere, but I have not found the proposals of the question, but I will explain to you what is the endoplasmic reticulum so that you can answer it.

The endoplasmic reticulum is a eukaryotic organelle located in the cytoplasm.

The endoplasmic reticulum is a network of membrane tubules (often interconnected) scattered throughout the cytoplasm of eukaryotic cells. Its membrane, which alone represents more than half of the cellular membrane system, is in contact with the nuclear envelope.

The endoplasmic reticulum can be:

Granular (or rough) (RER) that is to say associated with ribosomes.

Smooth (SER).

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The smooth endoplasmic reticulum participates in cellular metabolism, synthesizing lipids and storing calcium.

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3 years ago
A male who has a normal Y chromosome and an X chromosome for a sex-linked disorder _____ have the disorder.
aev [14]

Answer:

it does not have disorder

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3 years ago
What characteristic of are found in veins but not arteries?
Paul [167]

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Arteries don't have valves because the pressure originating from the heart is capable of causing the blood to flow in one direction.

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