1. Reduces the chromosome number from diploid to haploid
2. Ensures that each of the 4 gametes has a complete set of chromosomes
Answer:
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against stress
Explanation:
Answer:
Blood Brain Barrier(BBB)
Explanation:
This is a biological interface of special endothelial cells of astrocytes, pericytes , capillaries, neurons and other structures, acting as a physical barrier or gate separating the Central Nervous system from the peripheral blood circulations. Thus it formed a tight junction serving as a physical barrier to selectively regulate the entrance of substances from the cerebral blood flow into the brain, therefore maintaining homeostasis of the brain.
From above any substances absorbed into the blood stream irrespective of the mode of entry are transported through the BBB, and are selectively regulated to enter the brain cells by the BBB's interactions with the blood vessels, hormones etc.
Basically it allows the passage of nutrients, a few drug, hormones and resists certain toxins and pathogens for the brain homeostasis.
Answer: Negative symptoms
Explanation:
Negative symptoms involves an act of reflecting noticeable decrease(s) and absence(s) in emotions, behaviors or drives. Its symptoms include motivational problem, social interactions, bad experience and responsiveness, prosody and clarity of speech, and slowed movement.
Types of negative symptoms
1 - communicative deficits
2- Affective deficits
3 - Relational deficits
4- Avolition deficits
Answer: greenhouse effect, it is used to grow plants. One example of the greenhouse effect is the atmosphere.