A normal range in adults is generally considered to be 4.35 to 5.65 million red blood cells per microliter (mcL) of blood for men and 3.92 to 5.13 million red blood cells per mcL of blood for women. In children, the threshold for high red blood cell count varies with age and sex.
C. It is an incredibly long molecule with thousands of genes.
Answer:
The preferable option will be - D.
D. CO₂ is needed to produce sugars in the Calvin cycle.
Explanation:
- We know that CO₂ is the prime element for photosynthesis.
- CO₂ is the only source that supplies carbons in this process. With the help of CO₂, water, light, minerals, and chlorophyll, six-carbon glucose is formed.
- This glucose is converted to starch and is stored in fruits or in the parts of plants for further use.
Answer:
Brain consists of three major parts- cerebrum, cerebellum and the brain-stem.
Explanation:
Functions-
A) Cerebellum- helps body move more slow.
B) Cerebrum- Largest part of the brain consists of right and left half.
C) Hypothalamus- Regulates eating and drinking and body temperature.
D) Medulla- Controls basic life functions like heart rate.
E) Meninges- membranes that surround and protect the brain and spinal cord.
F) Midbrain- Plays a role in the maintenance of consciousness.
G) Pons-Controls movement of the eye and helps in auditory and visual processing
H) Thalamus-Passes signals from the spinal cord to the brain and controls breathing
I) Frontal lobe- Reasoning of judgement.
J) Partietal lobe- sense of touch of vibration.
K) Temporal lobe- Auditory processing and word meaning.
L) Occipital lobe- vision.
Answer:
Because the have similar limbs.
Because they have similar functions.
Explanation:
(because they have similar limbs)
Homology (evolution) describes a structure that has similar function like limbs on dogs and bears (used for walking) and also have a similar arrangement of bones. The fins on a doplhin might be different from the wings on a bat but they reflect a common origin due to their bone composition e.g carpals and radius bones.
(because they have similar functions)
Analogy (evolution) describes a structure with for example, bird and butterfly wings that have no common ancestor but have the same purpose, in this case flying. They developed independtly as adaptions. This supports natural selection which is a driving force for evolution.
