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Paladinen [302]
3 years ago
7

The structure of hemoglobin consists of ____________ chains. two of the chains are ____________ and two are beta proteins. each

of the protein chains are conjugated to a nonprotein ____________ group. this group contains a(n) ____________ ion in the center. there are four of these groups that will bind ____________ for delivery to body tissues.
Biology
1 answer:
svlad2 [7]3 years ago
4 0
In most mammals, hemoglobin consists of 4 distinct subunits. These subunits consist of an aminoacid chain (aminoacids are the building blocks of proteins) and a heme group. 2 of the subunits have a protein chain with a-structure and 2  have a protein chain with beta structure. The heme groups give hemoglobin and thus blood its red color. Each of these groups has a positively charged iron ion in its core. Iron is necessary so that hemoglobin can bind oxygen and transfer it through the blood flow to the tissues. Given the above exposition, the correct answers are: 4, alpha proteins, heme, iron, oxygen.
Bonus: Hemoglobin is an important example of protein structure since it shows that not only aminoacid order (secondary structure) and configuration of protein chains (tertiary structure) are crucial to the function of a protein; how the multiple chains bind to each other is equally critical (quaternary structure).
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The "photo-" part of the word photosynthesis refers to the _____, whereas "-synthesis" refers to ____
Debora [2.8K]

Answer:

1. Light

2. production of large component from smaller components

Explanation:

In the given question, the meaning of the word Photo is light and the synthesis refers to the production and combining these words form photosynthesis. The literal meaning of photosynthesis will be the production of some compounds in the presence of light.

The word photosynthesis is used by the biologists to refer to a process taking place in the green plants which involve the light for the synthesis of energy-providing molecule glucose.

Thus, 1. The light and production of the large components are correct.

5 0
3 years ago
What is the mRNA sequence for the DNA sequence a-c-c
allsm [11]

Answer:

Hi, there it's U-G-G

Hope this helps and correct :)

Explanation:

5 0
2 years ago
Indicate whether each statement is true or false: 1. Compliance is the tendency for blood vessel volume to increase as blood pre
Evgesh-ka [11]

Answer:

1. False

2. False

3. True

Explanation:

1. Compliance is the capacity of a container to increase in size to allow it hold more content. Blood vessel, arteries and veins expand (increase in volume) to be able to accommodate a surge in blood flow, which is as a result of an increase in pressure of the blood from the heart pumping of the blood

Therefore, compliance in the tendency for blood vessel volume to increase as the blood pressure <em>increases</em> not decrease

The statement is false

2. A large compliance is indicative of being highly sensitive to changes in pressure

Compliance, C = ΔV/ΔP

From the above equation, a blood vessel with a large compliance, exhibit a large increase in volume when the increase in pressure is small

Therefore, the statement 'Blood vessels with a large compliance exhibit a small increase in volume when pressure increases a small amount; is false

3. The compliance of the vein ranges from 10 to 20 times (30 times in some literature) greater than arteries. A factor which can be affected by the vascular smooth muscle contraction or relaxation

Therefore, the statement, 'venous compliance is approximately 24 times larger than arterial compliance, so as venous pressure increases the volume of veins greatly increases' is true

4 0
3 years ago
1. How can studying compounds in plants and animals benefit people? Give an example of how a compound found in a plant has been
BabaBlast [244]

Answer:

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Explanation:

Before 1928, humanity had conquered most of its enemies and people were only limited in lifespan by internal mechanisms being disrupted or failing, such as cancer, genetic errors,viruses, and BACTERIA. But in 1928 by accident a scientist discovered penicillin and finally deaths by bacteria were dropping to the point where in the past a mere cut could mean death by bacterial infection when compared to the present, humanity now doesn’t even consider bacterial infection, and that is all due to the power of penicillin and other antibiotics.

Water is a polar compound because there is a positive hydrogen end and a negative oxygen end, this is caused by an uneven electron distribution

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3 years ago
A student measured the amount of oxygen and carbon dioxide dissolved in an aquarium containing aquatic plants and snails. Why di
andriy [413]
The nail breathes oxygen to live. The nail breathes the oxygen dissolved in the water.


Given that the aquarium is a small bioma there is not enoguh source of oxygen to replace the oxygen consumed by the snail, except for the oxygen produced by the aquatinc plants inside the aquarium.


Plants produce oxygen through the process named photosynthesis. Photosynthesis requires light.


Given that the aquarium is kept dark, the aquatic plants cannot carry out the process of photosyntthesis and so there will not be generation new oxygen and the snails will die after they do not have oxygen to breath.


I
4 0
3 years ago
Read 2 more answers
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