Question

In plants, ____________ is an essential macronutrient, whereas humans and animals require _________ as a macronutrient.

	a.	Nitrogen; phosphorus
	b.	Protein; potassuim
	c.	NItrogen; carbohydrates
	d.	Carbohydrates; nitrogen
	e.	All of these nutrients are required in equal amounts by plants, humans, and animals

Consider the activity of the heart relative to other organs, as well as the function of mitochondria. Which of the following statements could you assume to be true?

	a.	cardiac cells have a greater number of mitochondria relative to other cell types
	b.	Cardiac cells have fewer mitochondria relative to other cell types
	c.	All cells have the same number of mitochondria
	d.	Cardiac cells perform fermentation, so mitochondria are not necessary
	e.	Cardiac cells exclusively perform anaerobic metabolism

Which of the following cellular components/organelles would you expect to find in a neuron?

	a.	Myelin
	b.	Chloroplast
	c.	Mitochondria
	d.	Photosystem II
	e.	Both A and C are correct

Which of the following statements is INCORRECT regarding reproduction in plants and animals?

	a.	Sexual reproduction increases species diversity in both plants and animals
	b.	Both plants and animals generate sperm
	c.	Both plants and animals generate eggs
	d.	Fertlilzation results in the formation of a diploid zygote in plants and animals
	e.	Double fertilization occurs in both plants and animals

Which of the following statements regarding glucose is true in plants, humans, AND animals ?

	a.	It is always stored as cellulose for energy.
	b.	It is always stored as amylose or amylopectin.
	c.	It is transported in hydrophilic/polar solutions throughout vascular tissues
	d.	Oxygen is required to produce the maximum amount of ATP from glucose.
	e.	Both C and D are correct.

Answer 1

Answer 1. Correct option is c) Nitrogen in plants and Carbohydrates in animals. In plants nitrogen, phosphorus, potassium, hydrogen etc are macronutrient in plants . Carbohydrates, proteins and fibre are macronutrient in animals.

Answer 2. Correct answer is a) cardiac cells have more number of mitochondria compared to other cell types because they have to perform more aerobic metabolism. Since they are present in heart that continues to pump for lifetime, thus more amount of mitochondria is required for energy supply.

Answer 3. Correct answer is e) both A and C. The neuron cells have a special cell cover called the myelin sheath and they have mitochondria present in their neuroplasm.

Answer 4. Correct option is e) double fertilization occur in both plants and animals. Double fertilization occur only in plants, in animals fertilization occurs once only. Rest all options are correct.

Answer 5. Correct option is e) both C and D. Glucose is transported in the form of hydrophilic solutions by the process of facilitated diffusion method because it is water soluble. Oxygen is required for ATP production from glucose in aerobic reactions. It is stored in many forms as cellulose, amylopectin, amylose, galactose etc.

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