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diamong [38]
3 years ago
15

Each of the following statements concerning hair is true except

Biology
1 answer:
Levart [38]3 years ago
5 0

Answer: A. scalp hairs grow constantly throughout life.

Explanation:

Hair is a squamous keratinized epithelium which is consist of multi-layered flat cells.  Hair are made up of protein called "keratin".

The statement "scalp hairs grow constantly throughout life" is false because at a particular age or due to several factors scalp hairs stop growing.

Scalp hair growth rate depends on three main factors including sex (female hair grows faster than male), age (hair growth slows with age), and ethnicity (Asian hair grows slower than Caucasian hair).

Scalp hair growth stops because of  follicle devitalization when the hair length become two or three feet.

Hence, the correct answer is A. "scalp hairs grow constantly throughout life".

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List and describe three factors that affect how quickly enzymes can work to catalyze reactions
Lilit [14]

Answer:

The correct answer is - temperature, pH, substrate concentration.

Explanation:

Various factors affect the rate of enzymatic reaction such as pH, temperature, substrate concentration, availability of activators or inhibitors in the reactions, and enzyme concentration.

Temperature: Temperature affects the rate of the enzyme-catalyzed reactions. Like most of the reactions with an increase in temperature rate of enzymatic reaction also rises up to a maximum level and then declines if the temperature continues to increase as enzyme denatures after a particular temperature.

pH: Similar to the temperature pH also increases the rate of reaction up to a maximum level and then declines the rate as every enzyme acts only at an optimum pH range.

Substrate concentration: If the substrate concentration is increased gradually while the concentration enzyme remains constant, the rate of reaction will increase until it reaches a maximum.

5 0
3 years ago
Does the PLANT CELL have CHLOROPLASTS?<br> A. Yes<br> B. No
babymother [125]
The answer is A: yes
Hope this helps
6 0
4 years ago
Where will you find bones in a cartilaginous fish?
Crazy boy [7]
Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage. 
7 0
3 years ago
Chuck Wildlee, a baseball pitcher, was struck on the head by a line drive hit by Charley Hussel. Fortunately, Chuck was not seri
enot [183]

Answer:

Option C, he lost both sensory and short-term memory

Explanation:

Sensory memory is basically the information received by the five sense organs and also the instruction given by brain to the respective sense organ.  

This sensory memory keeps  storing and is collectively referred to as short term memory.  

Since Chuck Wildlee was unable to remember how many balls and strikes the batter had. In past he would have perceived this information through eyes which should have been part of sensory memory and later the part of short term memory.  

Thus, it can be said that Chuck Wildlee lost both his sensory memory and short term memory  

Hence, option C is correct

4 0
3 years ago
How does matter cycle and energy flow through the rock cycle?
USPshnik [31]

Answer:

the rock cycle that's a thing?

5 0
3 years ago
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