There are 46 chromosomes in each cell at metaphase II in meiosis in humans. Normal human body cells each have 46 chromosomes. Prior to meiosis, the DNA replicates and each cell gets 92 chromosomes.
A germ cell in the testis in Metaphase II of Meiosis has 23 chromosomes.
In Metaphase II of Meiosis, the chromosomes line up at the equator of the cell and are ready to be separated into two daughter cells. Each daughter cell will receive half the number of chromosomes as the parent cell. In humans, the diploid number of chromosomes in a somatic cell is 46, while the haploid number of chromosomes in a germ cell is 23.
Therefore, in Metaphase II of Meiosis, a germ cell in the testis would have 23 chromosomes.
Learn more about total chromosomes in a germ cell in metaphase of meiosis ii here:
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b. infectious cycle
c. lysogenic cycle
d. temperate cycle
B: Fossil fuels lead to global climate change.
C: The US imports much of its petroleum from foreign countries which set the prices.
D: All of the above.
The fossil fuel use in the United States makes the U.S. vulnerable to the political wishes of foreign countries because the US imports much of its petroleum from foreign countries which set the prices, i.e., option C.
Fossil fuels are came from the decomposition of plants and animals.
These fuels can be found in the Earth's crust and encompasses carbon and hydrogen which can be burned for energy. Fossil fuels entail coal, oil, and natural gas.
The fossil fuel use in the United States makes the U.S. vulnerable to the political wishes of foreigncountries because the US imports much of its petroleum from foreign countries which set the prices.
Thus, the correct option is C.
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b. grass growth increases
c. soil quality decreases
d. invertebrate variety decreases
The correct answer is grass growth increase.
The wildfire in the grassland can help to improve the soil quality there. There are many positive sides of the wildfires. One of them is that it helps to improve the soil quality and favors the growth of plants there.
As the area is grassland, there will be growth of the grasses.
In case of wildfires, the contaminated soil gets burned and the harmful microorganisms die due to the fire and this improves the quality of the soil which ultimately grows the grass.
Belinda is a 10-year-old elementary school student who has come in for a physical examination. She is 55 inches tall and weighs 120 pounds. Her doctor calculates her BMI at 27.9 (98th percentile for her age). Concerned about her obesity, Belinda's doctor asks about her diet and her physical activity. Her mother reports that Belinda has become "lazy" and does not like to play outside with her friends after school. She says she is more irritable than usual and complains about helping with household chores. Her mother worries that she may be depressed, although she can think of no family issues that may be responsible for this behavior. Belinda sometimes skips breakfast or has cereal and toast in the morning; she takes chips, a juice drink, and a cheese sandwich made with white bread for lunch; and has a toaster pastry or cookies with milk for a snack after school. She doesn't particularly like meat and frequently asks for buttered pasta with cheese for dinner. Belinda says she eats vegetables "when my mom buys them." A blood test reveals a normal hemoglobin level, low serum iron, moderately elevated transferrin, and low transferrin saturation.
(B) all have an internal skeleton
(C) all have an exoskeleton
(D) only some have jointed appendages
Answer:
C. All have an exoskeleton
Explanation:
Crustaceans is a subphylum
of Arthropoda. The study of crustaceans is knows as carcinology or crustaceology.
They are important sources of food and they consist of crabs, crayfish, prawns etc. They are closely related to insects in terms of morphological(structural) features.
Crustaceans have varying numbers and structure of appendages. However they lack endoskeletons and possess exoskeletons.