Answer:
39 double helical DNA molecules.
Explanation:
- Meiosis always produces haploid cells.
- Sperm and Eggs are produced after meiosis.
- So, sperm and egg cells of dog would have 39 chromosomes and one double helix DNA molecule is present in each chromosome comprising 39 double helical DNA molecules.
<em>A chromosome has one DNA molecule before replication and have two DNA molecules after DNA replication.</em>
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Answer:
blood consists of plasma, red blood cells, white blood cells, and platelets
Explanation:
Answer:
The correct sequence of muscle contraction from first to last is given below
Explanation:
step 1 myosin head interacts with actin
step 2 ATP binds to myosin head
step 3 ATP is converted to ADP and Pi
step 4 ADP and pi are released from myosin
step 5 Myosin head pivots in the power stroke
step 6 Myosin head is cocked back.
This is a case of a hypertrophic cardiomyopathy with preserved ejection fraction. A hypertrophied left ventricle is a echocardiographic sign that there is chronic stress put in the left ventricle, most commonly in overcoming high aortic pressures in patients with systemic hypertension. In this case, there is normal chamber volume and normal ejection fraction therefore the heart is functionally normal and ejection fraction is preserved.
