I think the best choice is exocytosis : choice C
Hi there!
A prezygotic isolating mechanism is a mechanism that causes something to happen, not allowing the organisms to breed before fertilization. I'll explain each one for you.
A - That is postzygotic because the organisms were not stopped before fertilization. The result is a sterile organism.
B - Again, that is postzygotic because the organism was produced.
C - This is prezygotic! The sperm dying shows that something is in action to prevent fertilization, meaning that it cannot happen.
D - Fertilization was successful, so it is postzygotic.
ANSWER:
C - the sperm dies when it reaches the female tract
If you need help with any more problems, feel free to message me and I'd be more than happy to help you work through them and provide explanations.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
Answer:
Mitochondria is the powerhouse of the cell
Explanation:
Pls mark as brainliest
The colors for the stars are red, white, blue-white, white, and blue, and their temperature are 3,910 K, 3,500 K, 25,200 K, 22,400K, 5,780K, 9,600 K.
<h3>What is a star?</h3>
A star is a type of celestial body that can be set apart from others because it shines due to inner radiation. Moreover, stars are classified by:
- Color
- Size
- Location
- Temperature
- Age
Now, let's identify the color and temperature of the stars:
- Aldebaran: This star has a temperature of 3,910 K and its color is red.
- Betelgeuse: This star has a temperature of 3,500 K and its color is red.
- Sirius B: This star has a temperature of 25,200 K and its color is white.
- Spica: This star has a temperature of 22,400K and it is a blue-white star.
- The Sun: This star has a temperature of 5,780K and its color is white.
- Vega: This star has a temperature of 9,600 K and it is a blue star.
Learn more about stars in: brainly.com/question/2166533
Answer:
2.3 and 4 only
Explanation:
Mutation is an alteration in the gene of an organism, which can cause some physiological and physical changes in the organism.
Mutation can have a favorable positive effect on an individual (e.g increasing microorganisms resistance to antibiotics) increasing its chances of adaptability and survivability, it can have a negative effect on the individual (e.g cancerous cells) which can reduce its survivability, and can have no effect at all on the individual (e.g having eyes with 2 different colors).