Answer:
a. is marked by limited changes in reproductive hormones
Explanation:
Answer:
C) The amount of A is always equivalent to T, and C to G
Explanation:
Chargaff's rule was given by the Austrian chemist, Erwin Chargaff in late 1940s. It explains the composition of the four bases i.e. Adenine(A), Guanine(G), Thymine(T) and Cytosine(C) in a DNA molecule. According to it, purine and pyrimidine bases are always found in 1:1 ratio in a DNA molecule. A and G are purine and T and C are pyrimidine bases and a purine always forms a pair with pyrimidine base hence the amount of A will always be equal to T and amount of G will always be equal to C. This rule forms the basis for the Watson and Crick pairs in DNA double helix model.
Answer:
The idea of using recycle tires at playgrounds is a concern for some scientists because they contain carcinogenic substances.
Explanation:
Recycle tires are in playgrounds as rubber mulch. This one is on the playground's floor to cushion the impact of any falls that kids may have while playing. The problem with this product is that, as they are old tires cut into little pieces, they still have the tires' toxins such as arsenic, benzene, cadmium, mercury, etc. Exposure to these toxins can cause cancer. This is why some scientists are concerned with this material in areas where kids are exposed to it since they are more vulnerable to carcinogens than adults.
Answer:
Carbohydrates consist of which of the following elements? (CHOOSE ALL THAT APPLY)
Question 1 options:
Carbon
Hydrogen
Oxygen
Calcium
Question 2 (2 points)
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Which of the following statements about carbohydrates are NOT true?
Question 2 options:
Your body uses carbohydrates to give you energy and keep everything going.
Carbohydrates can be referred to as simple or complex sugars.
Starch is an example of a simple carbohydrate.
Starch must be broken down through digestion before your body can use it as an energy source.
Question 3 (2 points)
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Proteins are made up of smaller molecules called
Question 3 options:
starches.
amino acids.
monosaccharides.
protein synthesis.
Question 4 (2 points)
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Choose all of the following statements that correctly explain what essential amino acids are:
Question 4 options:
It is essential that our diet provides these amino acids.
There are 20 essential amino acids.
Peanut butter on wheat bread is an example of a combination of foods that you can mix together to obtain the essential amino acids.
Can be considered as saturated or unsaturated.
Question 5 (1 point)
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Nutritionists measure the amount of energy in food in Calories. According to the article, fats contain the highest number of Calories.
Question 5 options:
True
False
Explanation:
All the bolded ones aqre correct sorry for lateness just finished test.
