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givi [52]
3 years ago
14

Tay-sachs is a recessive genetic disease in humans. both parents are carriers (heterozygous), what are the chances that their ch

ild will have this disease?
Biology
1 answer:
wariber [46]3 years ago
5 0
There is 50% chance of disease in childrens
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Fluid filled sacs in the knee are specifically called
antoniya [11.8K]
Fluid filled sacs in the knee are specifically called Bursa or Bursae. Bursae is plural for Bursa.
A bursa is a closed fluid filled sac that function as a gliding surface to reduce friction between tissues of the body. Knee bursitis occurs when there is irritation or inflammation in one one of the knee bursa. The procedure of removing fluid-filled sac is called bursectomy. When the bursa become infected with bacteria, this condition is called septic bursitis.
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3 years ago
What are the different structures and functions of roots?
seraphim [82]

Different structures and functions of roots

Explanation:

Roots are the underground descending non-green part of the plant.

Root functions: Anchorages the plant to the soil, absorbs water and nutrients from the soil.

Characteristics: Positively geotropic and hydrotropic, negatively phototropic; does not have nodes, internodes or stems.

Types:  

  • Tap root
  • Adventitious root – fibrous, foliar and true adventitious roots

Structure and functions:  

  • Root cap or Calyptra: Cap-like structure covering the root tip .
  1. Function: protects the meristematic tissues of the root, secretes mucilage which enhances the root tips to grow into the hard soil.
  • Meristematic zone or growing point  sub-terminal behind root cap. These cells are inverted and looks like a dome.
  1. Function – helps in the root growth by adding new cells to the root tip and other basal regions
  • Zone of elongation behind the meristematic zone.
  1. Function – helps in elongation of the root
  • Root hair zone: This is the zone of differentiation where cells differentiate into vascular tissues like phloem, xylem, endodermis, cortex etc.
  1. The main function of root hair is to increase the total surface area of root to facilitate more absorption of water and other nutrients from the soil
  • Zone of maturation: the major and mature portion of a root.
  1. Function  - lateral roots originates from this zone and radial differentiation leads to secondary growth.  
4 0
3 years ago
In the visual analogy of a cell as a factory, what two functions of the nucleus are represented? How are these functions illustr
ludmilkaskok [199]

The control center of the factory.


5 0
3 years ago
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Whst is the correct term for an area of rotating current in a ocean​
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Answer:

A gyre is a large system of rotating ocean currents.

Together, these larger and more permanent currents make up the systems of currents known as gyres.

Explanation:

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3 years ago
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answer my question in complete sentences and make sure it is correct. do not copy off the internet, thank you very much
ehidna [41]

Answer:

ok

Explanation:

8 0
2 years ago
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