The contractile units of skeletal muscles are myofibrils. Thus,option A is correct.
<h3>What is skeletal muscles?</h3>
Skeletal muscles are 32 to 40% of total body mass. The type of muscles that connect to bones and allow to perform a wide range of movements and functions.
Skeletal muscles are easily controlled and work according to the desire .
Skeletal muscles are specialized tissue that is connected to bones and allows movement.
Therefore, the contractile units of skeletal muscles are myofibrils. Thus option 1st is correct.
Learn more about myofibrils here:
brainly.com/question/1194286
#SPJ1
Answer:
A) Ciprofloxacin (Cipro)
Explanation:
Ciprofloxacin is a potent antibiotic, which is part of the <u>fluorquinolone</u> class. This class has a broad spectrum of activity against various pathogenic micro-organisms that can incapacitate or kill humans and animals.
It is a prime antibiotic for the therapy of complicated urinary tract infections and bacterial diarrhea.
Ciprofloxacin is also an alternative agent for the treatment of various sexually transmitted diseases, as well as osteomyelitis and some cases of wounds.
Ciprofloxacin hydrochloride is an important weapon against bioterrorism for the treatment of the respiratory tract, being the only drug approved by the FDA (Food and Drug Administration) for treatment after exposure to inhaled anthrax.
Answer:
Penicillin binds and inhibits bacterial enzyme DD-transpeptidase.
Explanation:
Penicillin is made up of 4 rings of β-lactam and acts by binding to DD-transpeptidase of bacteria. The DD-transpeptidase facilitates the cross-linking of the peptidoglycan cell wall of bacteria. This leads to malformation of the protective cell wall of the bacteria and causes it to lyze and die.
Answer: Uterus
Explanation:
A fertilized egg is called ZYGOTE, and it is the product of fusion between a sperm cell and ovum cell.
The zygote is attached and housed in a muscular organ known as Uterus, commonly referred to as Womb. Here, the zygote grows and develops for several weeks into a foetus and then a human child (baby) in the pregnant woman
