Biology, 14.10.2020 14:01 23rwilliamson

Help pleaseee The cell membrane is selectively permeable, or semipermeable, meaning that

A)all substances can cross at any time.
B)large molecules can pass through without help.
C)only water can cross.
D)it only permits certain substances to cross.

Answers: 2

Show answers

Another question on Biology

Biology, 21.06.2019 13:30

Q1.8. continuing your studies, you perform a transplant experiment. you chisel up multiple rocks from the upper intertidal zone, each holding 10 individuals of species a, and move them to the lower intertidal zone among individuals of species c. you count the number of individuals of all species on the rocks every day for 30 days. based on your findings, what can you conclude? (remember that all 3 species settle in this zone at equal rates.)

Answers: 3

Answer

Biology, 22.06.2019 01:30

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

Answers: 1

Answer

Biology, 22.06.2019 06:30

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

Answers: 1

Answer

Biology, 22.06.2019 08:30

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Answers: 1

Answer

You know the right answer?

Help pleaseee The cell membrane is selectively permeable, or semipermeable, meaning that

Questions

Biology, 22.09.2020 06:01

Which of the following transport processes can be directly affected by blood pressure?...

Biology, 22.09.2020 06:01

Which of these is a source of lactose? sugar cane milk sugar beets starch potatoes...

Engineering, 22.09.2020 06:01

Identify the correct statement(s) regarding dedicated circuits. a. because call setup is not required, dedicated circuits are very efficient b...