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gizmo_the_mogwai [7]
2 years ago
5

this protein-digesting enzyme works optimally at ph 1.5-2.0. what is the enzyme, and where is it produced?

Biology
1 answer:
antoniya [11.8K]2 years ago
4 0

Answer:

pepsin; stomach

Explanation:

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Why are cells so small? In your answer, use the terms volume, distance, diffusion, surface area, plasma membrane.
Leno4ka [110]

Answer:

Cells are so little, so they can maximize their ratio of surface area to volume.

Explanation:

Smaller cells have a higher ratio which allows more molecules and ions to move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.

4 0
2 years ago
_____currents are caused by temperature and density differences. A. Deep B. Longshore C. Tsunami D. Surface
Margarita [4]

Your answer to your Question is ...A: deep

These currents move water masses through the deep ocean—taking nutrients, oxygen, and heat with them. Occasional events also trigger serious currents.

4 0
3 years ago
Alkali metals, alkaline earth metals, and aluminum all form ions with positive changes equal to the
mixer [17]
B. Group number
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5 0
3 years ago
How is it possible for a baby to grow all of its<br> organs
avanturin [10]

Explanation:

during the embryonic stage the baby grows its organs

Nervous system. This is one of the first things that develop. It includes the formation of the baby’s brain, spinal cord, and nerves.

Heart. An S-shaped tube forms on the front of the embryo. This will become the baby’s heart. At first the heart does not beat, but soon it starts beating and pumping an early form of blood.

Face. The baby’s facial features begin to take shape. The eyes and ears form. The eyes move forward on the face, and eyelids form. Pieces of tissue grow and join together to create the forehead, nose, cheeks, lips, and jaw. The nasal passages, mouth, and tooth buds form the baby’s first teeth. A tongue with taste buds also forms.

Arms and legs. At first, the baby’s arms and legs begin as little buds that sprout from the embryo’s sides. As they grow, the arms look like paddles and the legs look like flippers. A ridge appears on the end of each one. They eventually become the baby’s fingers and toes.

Sexual organs. Cells form to become the baby’s eggs or sperm. The baby’s private parts (girl/boy) is visible at the end of the embryonic period.

Muscles and movement. Muscles develop and the embryo begins to move. At first it’s only twitching and reacting to touch. Once the nerves and muscles start working together, the baby can start moving on purpose.

5 0
3 years ago
Which of the following is necessary for the light-independent reactions to proceed?
Yanka [14]

Answer;

C) ATP

Explanation;

-Photosynthesis can be divided into two parts: the light-dependent reactions and the light-independent reactions (also referred to as the "dark" reactions).

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-The light-independent reactions, or dark reactions, of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside the thylakoid membranes.

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