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4 years ago

What is the difference in the function of the proteins and the carbohydrates attached to a cell membrane

1 answer:

5 0

The proteins work as transport channels and gates where they have inner openings for the molecules to pass through. Carbohydrates work as receptors that detect the signals outside the cell.

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coli has a positive nitrate test (ability to reduce nitrate). This would indicate that the organism can carry out ________ respi

antiseptic1488 [7]

Answer: anaerobic respiration

Explanation:

Anaerobic respiration is simply respiration in the ABSENCE OF OXYGEN.

A positive nitrate test mean Escherichia coli reduces NO3 (Nitrate) to NO2 (Nitrite). This is based on its ability to produce nitrate reductase enzyme that catalyze the reduction process. And note that this reaction occurs in the ABSENCE OF OXYGEN.

This makes E. coli an ANAEROBE ( an organism that can survive in the absence of oxygen)

4 0

3 years ago

Are both of these answers correct? Thank you to anyone who answers, it really helps me

madreJ [45]

Yes it is .............................

6 0

3 years ago

What is the magnitude of the force exerted by the biceps fbiceps? What is the magnitude of the force exerted by the elbow felbow

Slav-nsk [51]

Answer:

The magnitude of the force exerted by the biceps $f_b_i_c_e_p_s$ is 218.38N

The magnitude of the force exerted by the elbow $f_e_l_b_o_w$ is 194.37N

Explanation:

Firstly , lets calculate the magnitude of force exerted by biceps $f_b_i_c_e_p_s$ -

Mass of the forearm=

$m_f=1.50kg$

Mass of the ball =

$m_b_a_l_l=950g$

= 0.950kg

so, weight of the forearm=

$w_f=m_f$ g

weight of the ball=

$w_b_a_l_l=m_b_a_l_l$ g

Now , balancing torque about the elbow , we have-

$F_b_i_c_e_p_s\times d_b_i_c_e_p_s= w_f\times\frac{d_b_a_l_l}{2} + w_b_a_l_l\times d_b_a_l_l$

(here , distance of the bicep is 2.50cm = 0.025m and distance of the ball is 36cm= 0.36m)

Now putting the given values in the formula -

$F_b_i_c_e_p_s\times 0.025= 0.95\times9.8\times\frac{0.36}{2} +1.50\times 0.36$

$F_b_i_c_e_p_s=218.38N$

Now, lets calculate the force exerted by elbow $F_e_l_b_o_w$ -

Balancing the vertical forces

$F_b_i_c_e_p_s=F_e_l_b_o_w+w_f+w_b_a_l_l$

$F_e_l_b_o_w = 218.38-(1.00\times9.8)-(0.95\times9.8)$

$F_e_l_b_o_w=194.37N$

8 0

3 years ago

Your friend Suzanne says that the Ancient Romans must have sent letters only when they were in love or wanted to wish their frie

riadik2000 [5.3K]

Answer:

ethnocentric

Explanation:

Based on this scenario, I would describe Suzanne's behavior as being ethnocentric. This is simply due to the fact that she is applying her own cultural customs to that of Ancient Romans which she has never met or dealt with their customs. She is simply using her own experiences from her culture and what she knows to explain other culture's behaviors, which is exactly what an ethnocentric person tends to do.

3 0

3 years ago

What is the function of a cell wall?

AleksandrR [38]

The cell wall of plants maintains the shape of plant cells, supports and strengthens plants, resists water pressure, controls cell growth, regulates metabolic processes for the plant, acts as a physical barrier for the plant, stores carbohydrates and helps with cell to cell signaling.

7 0

4 years ago