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zubka84 [21]
3 years ago
13

Choose the best description of the relationship between evolution and natural selection.

Biology
2 answers:
g100num [7]3 years ago
6 0
Out of the chooses given, the best description between evolution and natural selection is that natural selection leads to evolution. The correct answer is A. 
Neporo4naja [7]3 years ago
6 0
Your answer would be A, because natural selection can lead to evolution
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The binding of Ach to its muscuranic receptors indirectly affects the permeability of _____ channels which can produce hyperpola
MArishka [77]

Answer:

The binding of ACh to the muscarinic receptor indirectly affects the permeability of K⁺channels. This can produce hyper polarization in some organs if channels are opened, and depolarization in others if channels are closed.

Explanation:

For example, in the heart it is the beta-gamma compound that fixes to the K+ channels of heart muscle and sources them to exposed. This leads to K+ dispersion out of the cell and the cell converts into hyper polarized consequential in a reduction in heart rate. In contrast, in smooth muscle of the stomach the alpha sub unit fixes to K+ channels producing them to close. This decreases the external diffusion of K+ and the cell converts depolarized ensuing in smooth muscle contraction.

3 0
3 years ago
"which type of neuron carries messages within the central nervous system (cns):"
Darina [25.2K]
There is three types of neurons occur. Sensory neurons typically have a long denfrite and short axon, and carry messages from sensory repeptprs to the central nervous system. Motor neurons have a long axon and short dendrites and teansmit messages from the central nervous system to the muscles.
7 0
3 years ago
A 154-lb adult man performs a moderate level of physical activity and regularly consumes 2700 Calories a day. State whether the
Arte-miy333 [17]

Answer:

The correct answer would be - remain the same.

Explanation:

In the given table showing the average daily calories requirement according to the weight of the adult men. Which is as follows:

weight                daily intake

132                        2250

154                        2450

176                        2650

198                        2850

220                       3050

242                       3250

In this, the highlight weight and required calories should be taken by the man who does not perform any physical exercise but according to the question a man with 154 lb perform a moderate exercise, and according to the CDC a 154 lb men can burn anywhere between 140 and 295 calories in 30 minutes by moderate exercise for an hour.

Thus, the total calories he takes: 2700

burn by exercise: 295

should take: 2450

then = 2700 - (2450+295)

= 50 calories over the limit that will have negligible effect on the weight.

6 0
3 years ago
Translation or protien synthesis is a
Gnesinka [82]

Answer:

Multi-step process

Because it can be done twice or more

5 0
3 years ago
Although there are 61 codons in the universal genetic code that specify amino acids, most organisms possess fewer than 45 differ
Inessa05 [86]

Answer: 4

Explanation:

The pairing of the third (3') base of the mRNA codon and the first (5') base of the tRNA anticodon are less constrained by base stacking.

4 0
3 years ago
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