Response: B. Shrubland
The thornscrub ecosystem exists between the Sonoran and Chihuahuan Deserts. It characterizes a typical shrubland comprising smaller trees like velvet mesquite and shrubs such as Catlaw acacia and cactus commonly found in the Sonoran Desert. The thornscrub shrubland showcases distinct wet and dry seasons, allowing for the growth of both annual and perennial herbs. Consequently, the vegetation is influenced by alternating wet and dry periods.
c. PP
Jake exhibits a dominant trait for polydactyly, thus he must be PP or Pp. Lucy, having a normal toe count, has a recessive genotype, confirming she is pp.
If Jake were Pp, a breeding scenario of Pp X pp would result in half Pp and half pp kittens, indicating some kittens could be born with the recessive trait of 18 toes. However, none of the kittens possess 18 toes, all displaying a range of 21 to 25 toes. Therefore, Jake cannot be Pp .
Jake must be PP, as a cross of PP X pp guarantees that all kittens will have the Pp genotype, demonstrating the dominant pheno-type of polydactyly. Each kitten exhibits more than the recessive count of 18 toes, hence they are Pp. The variability in toe count arises from the trait's variable expressivity.
Some organisms have adapted in such a way that they stay inactive during the active hours of their predators. The adaptive theory of sleep posits that prey tend to rest at night when their predators are most active, using this time to rejuvenate and gather energy for various tasks. By remaining inactive and sheltered, prey decrease their chances of being hunted.
Thus, the answer is the adaptive theory of sleep.
Answer:
A total of 5.5 liters of blood is present
Therefore, to achieve a blood alcohol content (BAC) that surpasses 0.1 gram per 100 ml, a total of 0.1/100 × 5500 = 5.5 grams of alcohol is required.
1 oz equals 28.3 grams
28.3 grams of water equal 28.3 ml
It has an alcohol content of 20 percent by volume,
So, the amount of alcohol in one drink would be:
20/100 × 28.3
= 5.66 ml
= 5.66 × 0.79 (density of ethanol)
= 4.47 grams
Thus, the total number of drinks required will be 5.5 g / 4.47 g = 1.2
Hence, 1.2 drinks would elevate the BAC to over 0.1 g / 100 ml in the bloodstream.
Answer:
1.) Mitochondria produce energy via a sequence of chemical reactions where electrons are transferred along a membrane. "Maintaining some genes within mitochondria allows the cell to manage mitochondria independently," explains Johnston, as key proteins are synthesized there.
2.) The transition from DNA to protein happens through mRNA, involving transcription followed by translation, processes collectively referred to as gene expression.
Explanation:
