Answer:
enzymes are biological moleucles that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
Explanation:
When skeletal remains of microscopic organisms make up more than 30% of the sediment, it is called "ooze." ... Calcareous ooze, the most abundant of all biogenous sediments, comes from organisms whose shells (also called tests) are calcium-based, such as those of foraminifera, a type of zooplankton
Answer:
If an organism has a total diploid number of 60 chromosomes, same number of chromosomes i. e. 60 are present in each daughter cell after mitosis while half number of chromosome i. e. 30 are present in each daughter cell after meiosis.
Explanation: Mitosis is a type of cell division in which a single cell is divided into two daughter cells having double number of chromosomes, while meiosis is a type of cell division in which a single cell is divided into four daughter cells having half number of chromosome.
<h2><u>Full Question:</u></h2>
Which of the following would result in fraternal twins, who don't have identical DNA? A. Two sperm fertilizing a single egg B. One sperm fertilizing a single egg C. Two sperm fertilizing two different eggs that were released in the same cycle D. One sperm fertilizing a single egg that splits into two embryos
<h2><u>Answer</u>: </h2>
Fraternal twins do develop when two sperms do fertilize two different ova that are released at the same time of a menstrual cycle.
Option C
<h3><u>Explanation:</u></h3>
Twins are of two types - Monozygotic twins or identical twins, and Dizygotic twins or fraternal twins.
Fraternal twins develop rarely, when during the menstrual cycle of the would be mother, two ova are released by two ovaries. So, two sperms fertilize the two ova separately. These zygotes develop into two separate embryo in their own separate amniotic sac. Being developed from separate sperm and separate ovum, the twins have not much similar characteristics unlike identical twins.
Only the fraternal twins can have different genders, like one can be male and other female. Monozygotic twins are always of same gender.
The answer that would best complete the given statement above would be this: Cropland and rangeland. <span>The vast grasslands that once covered the middle of North America have mainly been replaced by cropland and rangeland. Hope this answers your question. Have a great day ahead!</span>
