Answer and Explanation:
Chemotaxis occurs when an organism moves toward a certain direction in response to a chemical.
Pollen is essential for the reproduction of plants because it produces a pollen tube that moves the sperm cells to the ovules that are located in the interior part of the flower. The pollen grains, produced in the anthers of a plant, <u>contain the male sex cells that will be transferred</u>. Chemotaxis plays a central role as it is a process in which chemical extracellular signals enable the movement of the pollen grains that will eventually enable plant reproduction.
Answer:
1.heterotrophs or consumers
2. An organism reacts to a stimulus with a response- an action or change in behavior. ... Another characteristic of organisms is the ability to reproduce, or produce offspring that are similar to the parents.
The active site is complementary to its substrate due to its specific 3D structure. The substrate fits in to one specific active site so an enzyme will only bind to one substrate. They are SPECIFIC. Lock and key theory.
Answer:
I hope that this helps you.
Explanation:
•ALLISON BOYER, 18, CHICO CALIFORNIA
What started as a 7-year-old’s desire to do something about the palm oil crisis plaguing orangutan habitats has turned into a fully scalable nonprofit called Purses for Primates that has raised over $27,000, to protect orangutans and their shrinking habitat. Allison is also a Barron Prize winner, and collects gently-used handbags from across the U.S., resells them at fundraising events, and donates 100% of the proceeds to Orangutan Outreach, a New York City-based conservation group.
She is a founding member of the group’s extensive children’s program, Forest School 101, and serves as the program’s current ambassador. “Orangutans have such an intelligent mind. They teach each other and grow together,” she tells Teen Vogue. “I have and always will feel personally responsible to try my best to rally as many people as I can to help save these creatures.” She attributes much of her success, though, to her BFF, Natalie Katsikas, who stuck by her side over the past 11 years while other friends faded away or called her efforts “dorky.”
Answer:
After 3 half lives 12.5 g of C-14 left
Explanation:
Given data:
Mass of C-14 = 100 g
After 3 half lives mass left = ?
Solution:
At time zero = 100 g
At first half life = 100 g/2 = 50 g
At second half life = 50 g/ 2 = 25 g
At third half life = 25 g/2 = 12.5 g
Thus, after 3 half lives 12.5 g of C-14 left.
