1. the immune system tries to stop foreign agents by either killing cells directly or by b)creating an unstable environment
2. a chronic auto immune disease where the body produces antibodies that stick to the body's own cells causing the body to attack itself is called d) systemic lupus erythematosus
3. cells that police the body in blood and lymph to kill cancer cells and virus infected body cells are called a) natural killer cells
4. as an infant the ability to produce antibodies is a)limited
6. when abnormal antibodies in the blood start to target tissues with in the body casing paint swelling in joints general fatigue fever chills and headache it is called c) rheumatoid arthritis
8. the fluid that is forced out of the capillary beds by hydrostatic and osmotic pressure into the tissue space is called C) plasma
9. any substance capable of exciting the immune system and provoking an immune response is called a) an antigen
10. tonsils are to the throat as b) peyer's patches are to the intestine
The proportions of DNA bases are similar among all organisms.
CD4 cells are infection-fighting white blood cells.
<h3>What are CD4 cells?</h3>
White blood cells called CD4 cells also referred to as T cells, are crucial components of your immune system because they combat infection. When a person has HIV, their CD4 count is used to determine how well their immune system is functioning (human immunodeficiency virus).
HIV not only attacks CD4 cells but also makes use of them to spread the infection. HIV uses the CD4 cells' capacity for viral replication to kill CD4 cells by producing more of the virus. The CD4 cells ultimately enlarge and explode as a result of this. HIV weakens the immune system by destroying CD4 cells.
Learn more about CD4 cells here:
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Answer:
a. Her mother has zig-zag antennae.
b. Her brother has zig-zag antennae.
Explanation:
<u>Available data</u>:
- Antennae development ⇒ controlled by maternal effect
- Zig-zag coils are dominant
- Curly coils are recessive
- A female develops zig-zag coils
Maternal effect: Refers to the influence of the “environment provided by the mother” on the progeny phenotype. The mother´s genotype directly determines the progeny phenotype. Even though the progeny has a different genotype, it is irrelevant, as well as the father´s genotype or phenotype. This means that no matter what is the genotype of the offspring, all of them will express the same phenotype as their mother. The maternal effect is commonly seen in insects and might be seen in some mammals and plants.
So, if a female has zig-zag coils, this means that the mother also has zig-zag antennae and that all the brothers and sisters of this female ant have zig-zag antennae, independently of their genotype.
a. Her mother has zig-zag antennae ⇒ True. The trait is inherited from the mother.
b. Her brother has zig-zag antennae ⇒ True. The whole progeny will express sig-zag antennae.
c. This female carries the zig-zag allele ⇒ Not necessarily.
d. This female's offspring will have zig-zag antennae ⇒ Depends on it´s genotype
