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Sphinxa [80]
3 years ago
15

Question of the day, who ever answers it first gets brainliest: Do animals have a cell wall?

Biology
2 answers:
blondinia [14]3 years ago
7 0

Answer:

yes they do

Explanation:

inysia [295]3 years ago
6 0

Answer:

NOO animals have cell membranes...cell walls are for plants

Explanation:

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what is one action that humans would take to protect human and ecosystem health from the effects of west mile virus
Strike441 [17]

Is the flu vaccine a answer? If so I’m pretty sure that’s the answer.

3 0
4 years ago
Which of the statement is true:regular exercise has little impact on maintaining peak performance after age 30 and after age 60
MAXImum [283]
<span>c. regular exercise has little impact on maintaining peak performance after age 30</span>
6 0
3 years ago
Explain how environmental factors affect the rate of transpiration in flowering plants​
Igoryamba

Explanation:

there are a couple of environmental factors that affect the rate of transpiration. they include:

I) wind:in a windy environment there is easy movement of moisture hence it does not accumulate on the leaf surface. this helps to increase diffusion gradient between the intercellular spaces in the leaf and in the environment there4 the rate of transpiration is increased. in a calm environment moisture accumulates on the surface of a leaf there4 reducing the diffusion gradient there4 reducing the rate of transpiration

ii) atmospheric pressure :in low lands there is high atmospheric pressure than in the highlands. the more the atmospheric pressure the more the pressure exerted on the cells of the leaves there4 reducing the rate of transpiration.

iii) humidity:the more the humidity in the atmosphere the less the rate of transpiration. this is due to low diffusion gradient due to accumulation of water vapour on the surface of the leaf

iv) temperature:a rise in temp increases the water vapour holding capacity of air in the air spaces within the spongy mesophyll layer. the water vapor pressure in the intercellular spaces increases causing an increase in diffusion gradient between the intercellular spaces and the environment there4 increasing the rate of transpiration. decrease in temp decreases the water vapor holding capacity in the intercellular spaces there4 diffusion gradient is lowered there4 reducing the rate of transpiration.

4 0
3 years ago
A student has a sandwich for lunch. The bread contains starch molecules and various other molecules. After chewing and swallowin
kupik [55]

Answer:

Once starch reaches small intestine, it needs to be broken down into smaller units with the help of <u>hydrolysis reaction</u>. Pancreatic amylase catalyzes this reaction which ultimately breaks down glycosidic bonds present in starch molecule to produce simpler bio-molecules like maltose, dextrin etc.

Uses of carbohydrate in body:

(1) It is primary source of energy in the body;

(2) It is required by the body for storage of energy in the form of glycogen;

(3) In plants, it is required for building cellular structures like cellulose.

Explanation:

In order for starch to be digested in the intestine, it needs to be hydrolyzed with the help of pancreatic amylase. The hydrolysis reaction breaks the glycosidic bonds of starch molecule which is a polymer leading to the release of smaller molecules like dextrin, maltose etc. Maltose which is a disaccharide is further broken down into even smaller monomeric units like glucose with the help of enzyme known as maltase.

After conversion into monomeric unit i.e. glucose now it can be absorbed by the blood stream. The blood transports these small glucose molecules to all the cells of the body. After entering the cell, the glucose is used for the production of energy/ATP via cellular respiration.

During cellular respiration, the glucose is first converted into pyruvate via glycolysis. Pyruvate then enters PDH complex wherein it is oxidatively carboxylated into acetyl coenzyme A. The acetyl coenzyme A produced then enters TCA cycle and produce high energy molecules like NADH, FADH₂ and ATP. The NADH and FADH₂ then finally enter electron transport chain (ETC) so as to produce ATPs. These ATPs are then utilized by our body for our day to day activities.

4 0
3 years ago
All matter has mass and<br><br> A. momentum<br><br> B. power<br> Oc. volume<br> O D. velocity
Paladinen [302]

Answer

Volume. Just think about it, do any of the others make any sense?

7 0
4 years ago
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