Answer
At week 5-6 of gestation, the baby’s heart starts beating.
Explanation
Fertilization occurs in week 3 followed by implantation in week 4.In week 5 the levels of hormones increases with formation of the baby’s heart and circulation system. In week 6, the neutral tube closes followed by development of structures necessary to form eyes and ears. The head of the baby develops at week 7 followed by nose in week 8 and toes in week 9.
Answer:
The purpose of mitosis is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction
Explanation:
The fluorescence marker tags to the enzyme when see with a powerful microscope the fluorescence will be observed in the mitochondrial matrix of the cell.
Explanation:
The enzyme responsible for the transfer of acetyl CoA group to oxaloacetate is ATP citrate lyase. It is produced in the matrix of the mitochondria in the cell during aerobic respiration.
The transfer of acetyl CoA group to oxaloacetate group marks start of the Kreb's cycle which also occurs in the matrix of mitochondria.
Hence the enzyme ATP citrate lyase when tagged with fluorescence will be seen in mitochondria of the cell.
"The organisms found in the shady area beneath a tree will be different from those found in the rain puddle" statement is most likely true regarding the organisms found in these two microhabitats.
<u>Option: B</u>
<u>Explanation:</u>
The narrow-scale environmental conditions of a specific entity or an organism population is understood as microhabitat. With relation to given statement, birds who protect themselves from getting wet because it become barrier for them to fly high and search food, at the same time the worms and snakes kind organisms enjoy rainy season by coming out from their holes, because they find difficulties in surviving outside their shady area during humid or summer season. Each habitat contains numerous microhabitats with subtle differences in exposure to light, humidity, temperature, circulation of air, and many other considerations.