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KIM [24]
3 years ago
14

Use sperm and egg in the same sentence.

Biology
2 answers:
BabaBlast [244]3 years ago
3 0
When the sperm reaches the egg a baby is made. 
BartSMP [9]3 years ago
3 0
When a sperm fertilizes an egg, a baby is starting to begin its journey developing as a child
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What is the correct order of events in the sliding filament theory of muscle contraction? 1. Myosin head binds to actin 2. Calci
valkas [14]

Answer:

The correct order is: 6) Sarcoplasmic reticulum releases calcium ions, 2) Calcium ions bind to troponin, 5) Tropomyosin moves to expose active sites of actin, 4) ATP is split into ADP and P, 1) Myosin head binds to actin, 7) ADP and P released from myosin, 3) Myosin cross-bridges bend, pulling actin toward center of sarcomere.

Explanation:

The ability to contract is an important property of the muscle cells and is fundamental to animals because muscles not only make locomotion possible but are also responsible for the correct functioning of organs (including the heart).

The mechanism behind muscle contraction is the sliding of filaments in a structure called sarcomere, which mostly involves the presence of actin and myosin filaments.

For muscle contraction to happen, there needs to be a <u>stimulus coming from the nerve that innervates said muscle</u>. This stimulus generates the release of <u>calcium ions</u> that will bind to a protein called troponin and will lead to the exposure of the active site of actin so it can bind to the myosin head. <u>This process requires ATP</u>.

7 0
3 years ago
2)
Savatey [412]

C - Eukaryotes and heterotrophic.

Good luck!

5 0
3 years ago
A person has a condition that makes her bones weak and easily broken. What part of the bone is most likely the cause of this con
Fantom [35]

Answer:

A. compact tissue

3 0
3 years ago
The largest amount of carbon dioxide is transported in the bloodstream in the form of carbonic anhydrase. True False
motikmotik

Answer: False, it is transported as bicarbonate

Explanation: Carbonic anhydrase is an enzyme belonging to the family of metalloenzymes that catalyzes the conversion of carbon dioxide and water to ions and carbonic acid. This enzyme is found in red blood cells where carbon dioxide enters by diffusion. Once it diffuses through it is then converted by carbonic anhydrase to bicarbonate and hydrogen ions.

That is how its transported in bloodstream, passes through the heart via the venous system, to the lungs. Therefore the answer is False.

5 0
3 years ago
The process by which modern organisms have descended from ancient organisms is called.
NikAS [45]

Answer:

Evolution

Explanation:

Evolution – change over time. It is the process by which modern organisms have descended from ancient organisms. Current scientific facts, observations and hypotheses all combine to create current evolutionary theory – which is a well-supported, testable explanation of the biological diversity on Earth.

6 0
2 years ago
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