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Bess [88]
3 years ago
8

When a sample of halite is struck with a hammer, it tends to break apart in one of three directions. This tendency is called the

_____ of halite. Student Selected Incorrect A. fracture Disabled B. hardness Disabled C. cleavage Disabled D. density
Biology
2 answers:
sergiy2304 [10]3 years ago
8 0

The answer is cleavage

blagie [28]3 years ago
4 0

<em>Which statement about the Gran Chaco region is not true? </em>

<u>Student Selected Correct </u>

         D.

It has violent winter thunderstorms called pamperos.

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Which of the following differentiates viruses from bacteria? a. viruses need cells in order to replicate, bacteria do not b. vir
pogonyaev

Answer:

the answer would be a

Explanation:

7 0
4 years ago
Plasma membrane of a skeletal muscle fiber - _________Extension of the sarcolemma that dives into the muscle fiber and surrounds
Tpy6a [65]

Answer:

1. Sarcolemma

2. T-Tubule

3. Sarcoplasmic reticulum

4. Terminal Cisternae

5. Myofibrils

6. Myofilament

7.Thick filament

8. Thin filament

Explanation:

These are all parts of the skeletal muscle and they are all involved in the contraction of your muslces.

The sacrolemma is also known as the myolemma. It is a specialized plasma membrane of the skeletal muscle cell. It is an excitable membrane that shares similarities to the cell membrane of a neuron cell.

The T-tubule extends from the sarcolemma to the sarcoplasmic reticulum (SR). This is the smooth endoplasmic reticulum of the muscle cell. When the sarcolemma gets excited, it triggers the SR to release the calcium ions stored in it. The release of Calcium ions triggers the contraction of myofilaments.

There are two types of myofilaments, the thick myofilament and the thin myofilament. These myofilaments contain contractile proteins, actin and myosin. Thick myofilaments contain myosin where one thick myofilament contains 300 myosin molecules. Thin myofilaments contain contractile and regulatory proteins. These myofilamens make up myofibrils.  

6 0
3 years ago
The porphyrin ring of chlorophyll contains the element ___ and the role of the ring is to
neonofarm [45]
Your answer is Magnesium
6 0
4 years ago
Living organisms are classified into six kingdoms. Which of the following are eukaryotes? (The number of answer are 4 in total)
matrenka [14]

Answer:

These are eukaryotes-

  • Protista
  • Fungi
  • Plantae
  • Animalia

These are prokaryotes-

  • Archaebacteria
  • Eubacteria
8 0
3 years ago
In an experiment, a group of scientists want to test the effects of humidity on plant growth. The scientists expose the plants i
elena55 [62]

Answer:

The correct answer is - option B) humidity.

Explanation:

Independent variable is the variable in a scientific experiment that can be modify or change in order to find out the response and analyse the response of dependent variable.

In this experiment the independent variable is humidity as it is changed in order to find out and study plant growth response by the effect of humidity.

Thus, the correct answer is - option B) humidity.

5 0
3 years ago
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