Sunlight causes water droplets to evaporate
Answer:
The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
Answer:
The correct option is D) determines normal activity of the urinary tract.
Explanation:
The peripheral nervous system controls involuntary functions and acts. The parasympathetic tone is known as a constant activity that maintains the parasympathetic nervous system, this allows that at any given time, the activity of this system can increase or decrease, that is, the value of the tone has implications in the increase or decrease in the activities of the stimulated organ, in its contraction or relaxation. Parasympathetic stimulation raises the tone of the detrusor muscle (causes it to contract) of the urinary bladder and relaxes the trigone and the urethral sphincters(which muscles help to keep the urethra closed, that is, help the urine staying in the bladder), favoring micturition.
Answer:
25% of the offspring will have red skin
Explanation:
B b
B BB Bb
-----------|-----------
b Bb bb
So basically, if only 1 out of 4 of the punnet squares has both recessive alleles for red skin, then that makes it being 25% of offspring would have red skin.
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Answer:
d. Hemoglobin helps maintain a constant pH in the blood by binding with H⁺ions released from bicarbonate ions.
Explanation:
The presence (CO₂) in in the erythrocytes lowers its pH as a result the affinity of hemoglobin decreases for oxygen. The carbon dioxide (CO₂) reacts with water to form carbonic acid in the presence of the enzyme carbonic anhydrase which is present in the erythrocytes or red blood cells. The carbonic acid then changes into two ions hydrogen ion (H⁺) and bicarbonate ion (HCO₃⁻). As a result of H⁺ ions, the pH of blood drops. Haemoglobin pick up hydrogen ions to balance the decrease in pH. Thus, haemoglobin helps in maintaining constant pH or keep pH of blood in buffer.
