Answer;
-Distal end
Explanation;
-The part of the esophagus that is farthest from its beginning at the throat is the distal end.
-The esophagus is a muscular tube connecting the throat with the stomach. It is about 8 inches long, and is lined by moist pink tissue called mucosa.
-Both ends of the esophagus are closed off by muscular constrictions known as sphincters; at the anterior, or upper, end is the upper esophageal sphincter, and at the distal, or lower, end is the lower esophageal sphincter.
<h2>Point mutation.</h2>
Explanation:
- The protein will be unchanged.
Mutation is defined as a change in nucleotide sequence of a gene. When a single nucleotide is inserted,deleted or substituted in a DNA sequence, then the resulting mutation is classified as point mutation.
A gene contains two region- intron region and exon region.
The region that codes for a particular protein is called the exon and the region that separates two exons and does not code for any protein is called the intron.
Most of the point mutations in the intron region are silent except if it is located at the splice site recognition sequence.
In the given situation the mutation is in the middle of the intron region so there is no chance of it being a splice site recognition sequence. Hence the protein will remain unchanged.
1) C. Gymnosperms are mostly adapted for wind pollination; angiosperms are mostly adapted for animal pollination. This is the best answer, because the others had the two types reversed. Gymnos have "naked" seeded cones, whereas Angios have seeds protected by fruit. Therefore the Angios relies on animals to eat the fruit and to pollinate, whereas Gymnos relied on wind to pollinate the ground. Gymnos came first on Earth and Angios developed later.
2) C. Cuticle. This is a waxy coating helping to keep water in. The main water losses are via stomata.
3) C. Stomata
4) B. Nonvascular
5) B. Gravity
These answers were explained in the questions that I just answered before. So refer to those for explanations.
We all know that plants need water, but water in excess is as bad as not having water.
→ Dry rural areas struggle to get water, and that is why most of the things they plant are native plants (resistant to dry climates).
→ Rural areas with heavy rainfalls struggle in finding ways of protecting they're crops against the damage the rain can cause and the excess water.
Hope it helped,
BioTeacher101
