What is responsible for identifying foreign invaders and remains in the system for a long period of time?

antigens

red blood cells

lymph nodes

axons

Where in the male reproductive system would you expect to find the most mature spermatozoa? a. in the head of the epididymis b. in the ductus deferens and ejaculatory duct c. in the seminal gland d. in the prostate gland e.

What is a gene? A. A piece of DNA that controls a trait B. A specific form of an allele C. A Chromosome that determines gender D. A group of chromosomes

How do I do this what are the steps involved in DNA replication

People with a lactose intolerance are able to take products such as lactaid that contain the lactase enzyme with their meals. these products can be taken in pill form.

Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. which of the following could be a unavoidable source of experimental error? A. Length of study B. Variation in the strawberry plants C.

Whats the process of Asexual Reproduction for Komodo Dragons?

As you add drops of water to the surface of the penny, each drop sticks to the other water droplet forming a large drop on top of the penny. This is caused by which water property? Question options: adhesion cohesion capillary action

Name the kingdom whose members have a cell wall made of chitin

A population is defined as all of the inhabitants of a given country or area considered together. a. True b. False

How does random fertilization add to genetic variation? a) reshuffling of randomly picked up chromosomes b) random fusion of genetically unique gametes c) exchange of genetic material between homologous chromosomes