Answer:
I've done this question before.
D. T-cells are made to identify antigens, while inflammation fights anything in the affected area.
Answer:
B. The amounts of sun, water, and
nutrients affect the growth of a plant
Explanation:
Gene expression is the way by which the genes of an organism instructs the production of proteins, which are responsible for the organism's phenotype. However, the trait or characteristics possessed by organisms are not strictly or 100% dependent on the genotypic factors but also on the environmental factors.
Environmental factors are the biotic (living) and abiotic (non-living) factors that affect organisms development and growth. An example is how the amount of sun, water, and nutrients, which are all environmental factors, affect the growth of a plant. Growth in plant, therefore, affects gene expression.
Add my enzyme, add more substrate and adjust pH to optimal level will all increase the rate of a reaction. Freezing or too low of temperatures will make most enzymes unable to work.
The first three are correct.
Answer: Homologous chromosomes
Explanation:
Homologous chromosomes are the pair of chromosomes that are contained in diploid organisms such as humans. There are 23 pairs of homologous chromosomes, and 46 in total (44 non-sex chromosomes and 2 sex-chromosomes)
During gamete formation, the mother produces an egg cell with 23 chromosomes, and the father produces a sperm cell with 23 chromosomes. Both combines, fertilize and yield a single cell known as Zygote with 46 chromosomes (i.e 23 pairs of homologous chromosomes)
The milk contain sugar in form of lactose. When milk is taken in food, the digestive enzyme lactase will break down the lactose sugar in milk and convert it to glucose. This will shows in the blood glucose level as an increase in glucose.
Thus, to determine the lactase activity of a person, milk can be given to that person and the glucose that are made from the milk[ [which are product of lactase activity] can then be measured.