Answer:
True
Explanation:
Cell membranes are selectively permeable because of the structure of the phospholipid bilayer.
This bilayer only lets certain things in because it depends on the polarity, size, and type of molecule.
For example, glucose molecules are too large to enter. But, carbon dioxide molecules can go in and out easily because of their small size.
Answer:
c. neutrophils
Explanation:
The main characteristics of neutrophils that made them different from other white blood cells is the multi-loped structure of nucleus in neutrophils.
Also neutrophils are different from other white blood cells as they are professional phagocytes and they respond by phagocytosis of microbes during the immune response.
.......................IIok
Mucus traps foreign particles and germs, protecting the body (especially the trachea)
<u>Answer:</u> The increase in temperature is 10°C
<u>Explanation:</u>
To calculate the change in temperature, we use the equation:
where,
q = heat absorbed = 200 kCal = 200,000 Cal (Conversion factor: 1 kCal = 1000 Cal)
m = mass of water = 20 kg = 20000 g (Conversion factor: 1 kg = 1000 g)
c = specific heat capacity of water = 1 Cal/g.°C
= change in temperature = ?
Putting values in above equation, we get:
Hence, the increase in temperature is 10°C
