Explain why cardiac muscles will not function well in the digestive track
Which of the following fat-soluble vitamins is an antioxidant necessary for synthesizing visual pigments, can be found in butter and leafy green vegetables, and can lead to blindness when a person's diet is deficient in it? a. Vitamin D
b. Vitamin A
c. Vitamin K
d. Vitamin E
The correct answer is B. Vitamin A.
Vitamin A (retinol, retinoic acid) is a fat-soluble vitamin important for vision, growth, cell division, reproduction and immunity. It also has antioxidant properties.
Vitamin A is present in many foods, such as spinach, dairy products and liver. Other sources are foods rich in beta-carotene, such as leafy vegetables, carrots and cantaloupe. Your body transforms beta-carotene into vitamin A.
There are two dofferent types of vitamin A. The first type, preformed vitamin A, it is found in beef, poultry, fish and dairy products. The second type, provitamin A, is found in fruits,vegetables and other products of vegetable origin. The most common type of provitamin A present in foods and dietary supplements is beta-carotene.
Not consuming enough vitamin A, can cause diseases (which can be avioded with a good diet). Vitamin A plays a very important role in vision. On the one hand, it is essential for the production of the pigment consumed by photoreceptors responsible for vision in darkness. Therefore, low levels of vitamin A lead to night blindness.
Because thats the answer
Which of the following is a protein produced by a regulatory gene? A) operon
the answer is D) repressor
Many of the traits of all living things are controlled by _____
Many of the traits of all living things are controlled by genes.
Genes is what make up who you are. Living things inherit this from the ancestors.
SOS. HELP. Give at least two examples of how enzymes and other proteins help in the process of replication.
Eating a pop tart gives you _________.
a. chemical energyb. nuclear energyc. light energy
chemical energy because your stomach dissolves the pop tarts
Each step in a food chain that demonstrates the transfer of energy is called a .
Lots of points, but please actually answer and help and not steal the points, you will be reported :) Many farmers select their cattle for breeding, but some farmers allow natural breeding to occur. The Jersey sire on this farm wasn’t selected by the farmer for mating. What’s the possible benefit to allowing natural breeding among cattle? A. increased likelihood the offspring will have traits the farmer desires B. higher genetic variation among the offspring C. lower genetic diversity among the population of cattle D. decreased likelihood the offspring will choose its own mate in the future
The answer is B since you are allowing the cows to breed freely and not forcing them to have specific features or traits.
Its B- higher genetic variation among the off-spring
MULTIPLE CHOICE WILL MARK BRAINLIEST Read the following statements that describe what happens as an impulse travels. What is the correct order in which the steps occur?
1) The impulse continues to travel down the axon away from the cell body.
2) Na+ gates close and K+ ions flow back out of the cell restoring the resting potential.
3) Gated K+ and Na+ channels are closed. The inside of the cell is slightly negative compared to the outside.
4) The neuron receives a stimulus great enough to start an impulse.
5) Gated Na+ channels open. The net movement of Na+ ions into the cell produces the action potential.