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scoundrel [369]
3 years ago
11

The three main constituent minerals of granite stones are feldspar, mica, and quartz. The textures of different types of

Biology
1 answer:
OleMash [197]3 years ago
7 0

Answer:

Option C

Explanation:

Granite is composed of coarse-grained quartz and feldspars in varying proportions and due to the varying proportions of these two constituent materials, the texture of granite varies as shown in the image.

Thus, option C is correct

Options A and B  and D are incorrect because the constituent material of granite is not fixed. It  varies from from place to the  other.

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Assume that the body has been sectioned along three planes: (1) a median plane, (2) a frontal plane, and (3) a transverse plane
Anit [1.1K]

Answer:

lungs and kidneys

Explanation:

The median plane divides the body into two halves through a mid line.

The transverse plain is also known as the axial plane and it divided the body into the upper part and a lower part.

The frontal plane is also known as the coronal plane. It divided the body into the dorsal and ventral sections. The dorsal and ventral sections are the front and back sections ( belly and back).

Lungs and kidneys are the only parts which cannot be seen through all the three plains.

6 0
4 years ago
Because it is difficult to excrete iron once it is in the body, iron balance is maintained primarily through absorption. The iro
Rzqust [24]
<h2>The given statement is true</h2>

Explanation:

Iron absorption occurs in the duodenum and upper jejunum of small intestine

  • At physiological pH ferrous iron is rapidly oxidized to the insoluble ferric form
  • Gastric acid lowers the pH in the duodenum which enhances the solubility and uptake of ferric iron
  • Once iron gets inside the enterocyte it can be stored as ferritin;Ferritin is a hollow spherical protein which helps in storage and regulation of iron levels within the body
  • Ferritin molecule have ferroxidase activity which helps in the mobility of Fe2+ out of the enterocyte by ferroportin
  • Transferrin is the major iron transport protein which transports iron through blood
  • Fe3+ binds to transferrin so Fe2+ transported through ferroportin must be oxidized to Fe3+
  • Fe2+ needs to be oxidized first so that it can be transported through ferroportin
  • Once iron gets inside the cell it can be used for various cellular processes
6 0
4 years ago
How is a brain injury classified?
faltersainse [42]

Answer:

As an injury of the central nervous system.

Explanation:

Peripheral nervous system is the nervous system outside the brain and spinal cord. The central nervous system consists of the brain and spinal cord. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, digestion, respiratory rate, and more. The somatic nervous system is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles. Therefore, central nervous system is your answer!

Hope this helps :3

6 0
3 years ago
Read 2 more answers
during the course of successful prenatal development, a human organism begins as a A. embryo and finally develops into a zygote
Zielflug [23.3K]

Answer:

The correct answer is D. zygote and finally develops into a fetus

Explanation:

Zygote is formed by the fusion of male gametes and female gametes. It is considered as the first stage of development of a baby. Zygote is a unicellular structure which develops into an embryo which is a multicellular structure.

Then this embryo develops and is called a fetus at the starting of the 11th week of pregnancy. A developed fetus is the final stage of prenatal development.

Therefore during successful prenatal development, a human baby begins as a zygote and finally develops into a fetus. So the correct answer is D.

8 0
3 years ago
What is the name of the organism in the symbiotic relationship with fungi that produces a lichen?
Black_prince [1.1K]
Answer:  "alga" / "algae" ;  

 (or, in some cases, "cyanobacterium" / "cyanobacteria").
_______________________________________________________
<u>Note</u>:  This applies to marine lichens—as well as lichens on land.
_______________________________________________________
6 0
4 years ago
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