Answer:
Thymine and uracil or adenine have two hydrogen bonds between them, whereas guanine and cytosine have three.
Answer:
A. Most plats in the ditch will be plants with long roots.
Explanation:
Because the plants with shallower roots systems are easily uprooted by the rain, and there is lots of rain that year, natural selection will choose the long rooted plats. They are the "strongest" in evolution's eyes because they are less likely to die by being uprooted.
Answer:
When cycling of matter in the ecosystems is disrupted, the whole ecosystem will be adversely affected. Matter includes living organisms such as plants, animals and microorganisms while non living things such water, air and nutrients etc. If plants are removed from the ecosystem system, then the whole ecosystem is destroyed because plants are the producer which make food for herbivores. These herbivores are eaten by carnivores and so on.
Answer:
1. C
2. B
Explanation:
1. When a plant cell looses some water due to dehydration or being placed in a hypertonic solution, the term used to describe the cell's intial, not severe shrinkage is 'flaccid'.
Here, it's clear that the cell shrank so much that the cell membrane pulled away from the cell wall. The correct term for this severe shrinkage is 'plasmolysed'.
We don't use 'wilted' as a term to describe a cell. We use it to describe the plant as a whole.
2. This is the function of each. Water and ions in xylem and sugars like sucrose in phloem.
Answer: Cushing Syndrome
Explanation:
Cushing Syndrome occurs when the body is exposed to high level of cortisol for a long time either externally (taken into the body from outside ) or internally (secretion in excess of the hormone called cortisol by the body) . It can also be called hypercortisolism .
The symptoms of Cushin Syndrome may vary depending on the severity of the excess cortisol secretion. Females may have irregular menstrual period due to this condition.
Asthma and arthritis patients who take corticosteroids and experiences the mentioned symptoms should seek medical attention for diagnosis.
